This invention relates generally to wellbore casings, and in particular to wellbore casings that are formed using expandable tubing.
Conventionally, when a wellbore is created, a number of casings are installed in the borehole to prevent collapse of the borehole wall and to prevent undesired outflow of drilling fluid into the formation or inflow of fluid from the formation into the borehole. The borehole is drilled in intervals whereby a casing which is to be installed in a lower borehole interval is lowered through a previously installed casing of an upper borehole interval. As a consequence of this procedure the casing of the lower interval is of smaller diameter than the casing of the upper interval. Thus, the casings are in a nested arrangement with casing diameters decreasing in downward direction. Cement annuli are provided between the outer surfaces of the casings and the borehole wall to seal the casings from the borehole wall. As a consequence of this nested arrangement a relatively large borehole diameter is required at the upper part of the wellbore. Such a large borehole diameter involves increased costs due to heavy casing handling equipment, large drill bits and increased volumes of drilling fluid and drill cuttings. Moreover, increased drilling rig time is involved due to required cement pumping, cement hardening, required equipment changes due to large variations in hole diameters drilled in the course of the well, and the large volume of cuttings drilled and removed.
The present invention is directed to overcoming one or more of the limitations of the existing procedures for forming new sections of casing in a wellbore.
According to one aspect of the present invention, an apparatus for forming a wellbore casing in a borehole located in a subterranean formation including a preexisting wellbore casing is provided that includes a support member including a first fluid passage, an expansion cone coupled to the support member including a second fluid passage fluidicly coupled to the first fluid passage, an expandable tubular liner movably coupled to the expansion cone, and an expandable shoe coupled to the expandable tubular liner. The expansion cone is adjustable to a plurality of stationary positions.
According to another aspect of the present invention, a method of forming a wellbore casing in a subterranean formation having a preexisting wellbore casing positioned in a borehole is provided that includes installing a tubular liner, an adjustable expansion cone, and a shoe in the borehole, radially expanding at least a portion of the shoe by a process comprising: adjusting the adjustable expansion cone to a first outside diameter, and injecting a fluidic material into the shoe, and radially expanding at least a portion of the tubular liner by a process comprising: adjusting the adjustable expansion cone to a second outside diameter, and injecting a fluidic material into the borehole below the expansion cone.
According to another aspect of the present invention, a system for forming a wellbore casing in a subterranean formation having a preexisting wellbore casing positioned in a borehole is provided that includes means for installing a tubular liner, an adjustable expansion cone, and a shoe in the borehole, means for radially expanding at least a portion of the shoe comprising: means for adjusting the adjustable expansion cone to a first outside diameter, and means for injecting a fluidic material into the shoe, and means for radially expanding at least a portion of the tubular liner comprising: means for adjusting the adjustable expansion cone to a second outside diameter, and means for injecting a fluidic material into the borehole below the adjustable expansion cone.
According to another aspect of the present invention, a wellbore casing positioned in a borehole within a subterranean formation is provided that includes a first wellbore casing comprising: an upper portion of the first wellbore casing, and a lower portion of the first wellbore casing coupled to the upper portion of the first wellbore casing, wherein the inside diameter of the upper portion of the first wellbore casing is less than the inside diameter of the lower portion of the first wellbore casing, and a second wellbore casing comprising: an upper portion of the second wellbore casing that overlaps with and is coupled to the lower portion of the first wellbore casing, and a lower portion of the second wellbore casing coupled to the upper portion of the second wellbore casing, wherein the inside diameter of the upper portion of the second wellbore casing is less than the inside diameter of the lower portion of the second wellbore casing, and wherein the inside diameter of the upper portion of the first wellbore casing is equal to the inside diameter of the upper portion of the second wellbore casing. The second wellbore casing is coupled to the first wellbore casing by the process of: installing the second wellbore casing and an adjustable expansion cone within the borehole, radially expanding at least a portion of the lower portion of the second wellbore casing by a process comprising: adjusting the adjustable expansion cone to a first outside diameter, and injecting a fluidic material into the second wellbore casing, and radially expanding at least a portion of the upper portion of the second wellbore casing by a process comprising: adjusting the adjustable expansion cone to a second outside diameter, and injecting a fluidic material into the borehole below the adjustable expansion cone.
According to another aspect of the present invention, an apparatus for forming a wellbore casing in a borehole located in a subterranean formation including a preexisting wellbore casing is provided that includes a support member including a first fluid passage, a first adjustable expansion cone coupled to the support member including a second fluid passage fluidicly coupled to the first fluid passage, a second adjustable expansion cone coupled to the support member including a third fluid passage fluidicly coupled to the first fluid passage, an expandable tubular liner movably coupled to the first and second adjustable expansion cones, and an expandable shoe coupled to the expandable tubular liner.
According to another aspect of the present invention, a method of forming a wellbore casing in a subterranean formation having a preexisting wellbore casing positioned in a borehole is provided that includes installing a tubular liner, an upper adjustable expansion cone, a lower adjustable expansion cone, and a shoe in the borehole, radially expanding at least a portion of the shoe by a process comprising: adjusting the lower adjustable expansion cone to an increased outside diameter, and injecting a fluidic material into the shoe, and radially expanding at least a portion of the tubular liner by a process comprising: adjusting the lower adjustable expansion cone to a reduced outside diameter, adjusting the upper adjustable expansion cone to an increased outside diameter, and injecting a fluidic material into the borehole below the lower adjustable expansion cone.
According to another aspect of the present invention, a system for forming a wellbore casing in a subterranean formation having a preexisting wellbore casing positioned in a borehole is provided that includes means for installing a tubular liner, an upper adjustable expansion cone, a lower adjustable expansion cone, and a shoe in the borehole, means for radially expanding at least a portion of the shoe comprising: means for adjusting the lower adjustable expansion cone to an increased outside diameter, and means for injecting a fluidic material into the shoe, and means for radially expanding at least a portion of the tubular liner comprising: means for adjusting the lower adjustable expansion cone to a reduced outside diameter, means for adjusting the upper adjustable expansion cone to an increased outside diameter, and means for injecting a fluidic material into the borehole below the lower adjustable expansion cone.
According to another aspect of the present invention, a wellbore casing positioned in a borehole within a subterranean formation is provided that includes a first wellbore casing comprising: an upper portion of the first wellbore casing, and a lower portion of the first wellbore casing coupled to the upper portion of the first wellbore casing, wherein the inside diameter of the upper portion of the first wellbore casing is less than the inside diameter of the lower portion of the first wellbore casing, and a second wellbore casing comprising: an upper portion of the second wellbore casing that overlaps with and is coupled to the lower portion of the first wellbore casing, and a lower portion of the second wellbore casing coupled to the upper portion of the second wellbore casing, wherein the inside diameter of the upper portion of the second wellbore casing is less than the inside diameter of the lower portion of the second wellbore casing, and wherein the inside diameter of the upper portion of the first wellbore casing is equal to the inside diameter of the upper portion of the second wellbore casing. The second wellbore casing is coupled to the first wellbore casing by the process of: installing the second wellbore casing, an upper adjustable expansion cone, a lower adjustable expansion cone, and a shoe in the borehole, radially expanding at least a portion of the lower portion of the second wellbore casing shoe by a process comprising: adjusting the lower adjustable expansion cone to an increased outside diameter, and injecting a fluidic material into the lower portion of the second wellbore casing, and radially expanding at least a portion of the upper portion of the second wellbore casing by a process comprising: adjusting the lower adjustable expansion cone to a reduced outside diameter, adjusting the upper adjustable expansion cone to an increased outside diameter, and injecting a fluidic material into the borehole below the lower adjustable expansion cone.
a is a cross-sectional view of a portion of the shoe of the apparatus of
b is a cross-sectional view of another portion of the shoe of the apparatus of
c is a cross-sectional view of another portion of the shoe of the apparatus of
d is a cross-sectional view of another portion of the shoe of the apparatus of
e is a cross-sectional view of a portion of the shoe of the apparatus of
a is a cross-sectional view of a portion of the shoe of the apparatus of
b is a cross-sectional view of a portion of the shoe of the apparatus of
a is a cross-sectional view of a portion of the shoe of the apparatus of
b is a cross-sectional view of a portion of the shoe of the apparatus of
a is a cross-sectional view of a portion of the shoe of the apparatus of
b is a cross-sectional view of a portion of the shoe of the apparatus of
c is a cross-sectional view of another portion of the shoe of the apparatus of
d is a cross-sectional view of another portion of the shoe of the apparatus of
a is a cross-sectional view of a portion of the shoe of the apparatus of
a is a cross-sectional view of a portion of the shoe of the apparatus of
Referring initially to
In order to extend the wellbore 100 into the subterranean formation 105, a drill string 125 is used in a well known manner to drill out material from the subterranean formation 105 to form a new wellbore section 130. In a preferred embodiment, the inside diameter of the new wellbore section 130 is greater than the inside diameter of the preexisting wellbore casing 115.
As illustrated in
The expansion cone 205 may be any number of conventional commercially available expansion cones. In several alternative embodiments, the expansion cone 205 may be controllably expandable in the radial direction, for example, as disclosed in U.S. Pat. Nos. 5,348,095, and/or 6,012,523, the disclosures of which are incorporated herein by reference.
The tubular member 210 may be fabricated from any number of conventional commercially available materials such as, for example, Oilfield Country Tubular Goods (OCTG), 13 chromium steel tubing/casing, or plastic tubing/casing. In a preferred embodiment, the tubular member 210 is fabricated from OCTG in order to maximize strength after expansion. In several alternative embodiments, the tubular member 210 may be solid and/or slotted. For typical tubular member 210 materials, the length of the tubular member 210 is preferably limited to between about 40 to 20,000 feet in length.
The lower portion 210a of the tubular member 210 preferably has a larger inside diameter than the upper portion 210c of the tubular member. In a preferred embodiment, the wall thickness of the intermediate portion 210b of the tubular member 201 is less than the wall thickness of the upper portion 210c of the tubular member in order to faciliate the initiation of the radial expansion process. In a preferred embodiment, the upper end portion 210d of the tubular member 210 is slotted, perforated, or otherwise modified to catch or slow down the expansion cone 205 when it completes the extrusion of tubular member 210. In a preferred embodiment, wall thickness of the upper end portion 210d of the tubular member 210 is gradually tapered in order to gradually reduce the required radial expansion forces during the latter stages of the radial expansion process. In this manner, shock loading conditions during the latter stages of the radial expansion process are at least minimized.
A shoe 215 is coupled to the lower portion 210a of the tubular member. The shoe 215 includes an upper portion 215a, an intermediate portion 215b, and lower portion 215c having a valveable fluid passage 220 that is preferably adapted to receive a plug, dart, or other similar element for controllably sealing the fluid passage 220. In this manner, the fluid passage 220 may be optimally sealed off by introducing a plug, dart and/or ball sealing elements into the fluid passage 220.
The upper and lower portions, 215a and 215c, of the shoe 215 are preferably substantially tubular, and the intermediate portion 215b of the shoe is preferably at least partially folded inwardly. Furthermore, in a preferred embodiment, when the intermediate portion 215b of the shoe 215 is unfolded by the application of fluid pressure to the interior region 230 of the shoe, the inside and outside diameters of the intermediate portion are preferably both greater than the inside and outside diameters of the upper and lower portions, 215a and 215c. In this manner, the outer circumference of the intermediate portion 215b of the shoe 215 is preferably greater than the outside circumferences of the upper and lower portions, 215a and 215b, of the shoe.
In a preferred embodiment, the shoe 215 further includes one or more through and side outlet ports in fluidic communication with the fluid passage 220. In this manner, the shoe 215 optimally injects hardenable fluidic sealing material into the region outside the shoe 215 and tubular member 210.
In an alternative embodiment, the flow passage 220 is omitted.
A support member 225 having fluid passages 225a and 225b is coupled to the expansion cone 205 for supporting the apparatus 200. The fluid passage 225a is preferably fluidicly coupled to the fluid passage 205a. In this manner, fluidic materials may be conveyed to and from the region 230 below the expansion cone 205 and above the bottom of the shoe 215. The fluid passage 225b is preferably fluidicly coupled to the fluid passage 225a and includes a conventional control valve. In this manner, during placement of the apparatus 200 within the wellbore 100, surge pressures can be relieved by the fluid passage 225b. In a preferred embodiment, the support member 225 further includes one or more conventional centralizers (not illustrated) to help stabilize the apparatus 200.
During placement of the apparatus 200 within the wellbore 100, the fluid passage 225a is preferably selected to transport materials such as, for example, drilling mud or formation fluids at flow rates and pressures ranging from about 0 to 3,000 gallons/minute and 0 to 9,000 psi in order to minimize drag on the tubular member being run and to minimize surge pressures exerted on the wellbore 130 which could cause a loss of wellbore fluids and lead to hole collapse. During placement of the apparatus 200 within the wellbore 100, the fluid passage 225b is preferably selected to convey fluidic materials at flow rates and pressures ranging from about 0 to 3,000 gallons/minute and 0 to 9,000 psi in order to reduce the drag on the apparatus 200 during insertion into the new section 130 of the wellbore 100 and to minimize surge pressures on the new wellbore section 130.
A cup seal 235 is coupled to and supported by the support member 225. The cup seal 235 prevents foreign materials from entering the interior region of the tubular member 210 adjacent to the expansion cone 205. The cup seal 235 may be any number of conventional commercially available cup seals such as, for example, TP cups, or Selective Injection Packer (SIP) cups modified in accordance with the teachings of the present disclosure. In a preferred embodiment, the cup seal 235 is a SIP cup seal, available from Halliburton Energy Services in Dallas, Tex. in order to optimally block foreign material and contain a body of lubricant. In several alternative embodiments, the cup seal 235 may include a plurality of cup seals.
One or more sealing members 240 are preferably coupled to and supported by the exterior surface of the upper end portion 210d of the tubular member 210. The sealing members 240 preferably provide an overlapping joint between the lower end portion 115a of the casing 115 and the upperend portion 210d of the tubular member 210. The sealing members 240 may be any number of conventional commercially available seals such as, for example, lead, rubber, Teflon, or epoxy seals modified in accordance with the teachings of the present disclosure. In a preferred embodiment, the sealing members 240 are molded from Stratalock epoxy available from Halliburton Energy Services in Dallas, Tex. in order to optimally provide a load bearing interference fit between the upper end portion 210d of the tubular member 210 and the lower end portion 115a of the existing casing 115.
In a preferred embodiment, the sealing members 240 are selected to optimally provide a sufficient frictional force to support the expanded tubular member 210 from the existing casing 115. In a preferred embodiment, the frictional force optimally provided by the sealing members 240 ranges from about 1,000 to 1,000,000 lbf in order to optimally support the expanded tubular member 210.
In an alternative embodiment, the sealing members 240 are omitted from the upper end portion 210d of the tubular member 210, and a load bearing metal-to-metal interference fit is provided between upper end portion of the tubular member and the lower end portion 115a of the existing casing 115 by plastically deforming and radially expanding the tubular member into contact with the existing casing.
In a preferred embodiment, a quantity of lubricant 245 is provided in the annular region above the expansion cone 205 within the interior of the tubular member 210. In this manner, the extrusion of the tubular member 210 off of the expansion cone 205 is facilitated. The lubricant 245 may be any number of conventional commercially available lubricants such as, for example, Lubriplate, chlorine based lubricants, oil based lubricants or Climax 1500 Antisieze (3100). In a preferred embodiment, the lubricant 245 is Climax 1500 Antisieze (3100) available from Climax Lubricants and Equipment Co. in Houston, Tex. in order to optimally provide optimum lubrication to faciliate the expansion process.
In a preferred embodiment, the support member 225 is thoroughly cleaned prior to assembly to the remaining portions of the apparatus 200. In this manner, the introduction of foreign material into the apparatus 200 is minimized. This minimizes the possibility of foreign material clogging the various flow passages and valves of the apparatus 200.
In a preferred embodiment, before or after positioning the apparatus 200 within the new section 130 of the wellbore 100, a couple of wellbore volumes are circulated in order to ensure that no foreign materials are located within the wellbore 100 that might clog up the various flow passages and valves of the apparatus 200 and to ensure that no foreign material interferes with the expansion process.
As illustrated in
As illustrated in
The material 255 is preferably pumped into the annular region 260 at pressures and flow rates ranging, for example, from about 0 to 5000 psi and 0 to 1,500 gallons/min, respectively. The optimum flow rate and operating pressures vary as a function of the casing and wellbore sizes, wellbore section length, available pumping equipment, and fluid properties of the fluidic material being pumped. The optimum flow rate and operating pressure are preferably determined using conventional empirical methods.
The hardenable fluidic sealing material 255 may be any number of conventional commercially available hardenable fluidic sealing materials such as, for example, slag mix, cement, latex or epoxy. In a preferred embodiment, the hardenable fluidic sealing material 255 is a blended cement prepared specifically for the particular well section being drilled from Halliburton Energy Services in Dallas, Tex. in order to provide optimal support for tubular member 210 while also maintaining optimum flow characteristics so as to minimize difficulties during the displacement of cement in the annular region 260. The optimum blend of the blended cement is preferably determined using conventional empirical methods. In several alternative embodiments, the hardenable fluidic sealing material 255 is compressible before, during, or after curing.
The annular region 260 preferably is filled with the material 255 in sufficient quantities to ensure that, upon radial expansion of the tubular member 210, the annular region 260 of the new section 130 of the wellbore 100 will be filled with the material 255.
In an alternative embodiment, the injection of the material 255 into the annular region 260 is omitted, or is provided after the radial expansion of the tubular member 210.
As illustrated in
As illustrated in
As illustrated in
As illustrated in
In an alternative embodiment, the expansion cone 205 is not lowered into the radially expanded portion of the shoe 215 prior to being radially expanded. In this manner, the upper portion 210c of the shoe 210 may be radially expanded by the radial expansion of the expansion cone 205.
In another alternative embodiment, the expansion cone 205 is not radially expanded.
As illustrated in
During the extrusion process, the expansion cone 205 may be raised out of the expanded portion of the tubular member 210. In a preferred embodiment, during the extrusion process, the expansion cone 205 is raised at approximately the same rate as the tubular member 210 is expanded in order to keep the tubular member 210 stationary relative to the new wellbore section 130. In this manner, an overlapping joint between the radially expanded tubular member 210 and the lower portion of the preexisting casing 115 may be optimally formed. In an alternative preferred embodiment, the expansion cone 205 is maintained in a stationary position during the extrusion process thereby allowing the tubular member 210 to extrude off of the expansion cone 205 and into the new wellbore section 130 under the force of gravity and the operating pressure of the interior region 230.
In a preferred embodiment, when the upper end portion 210d of the tubular member 210 and the lower portion of the preexisting casing 115 that overlap with one another are plastically deformed and radially expanded by the expansion cone 205, the expansion cone 205 is displaced out of the wellbore 100 by both the operating pressure within the region 230 and a upwardly directed axial force applied to the tubular support member 225.
The overlapping joint between the lower portion of the preexisting casing 115 and the radially expanded tubular member 210 preferably provides a gaseous and fluidic seal. In a particularly preferred embodiment, the sealing members 245 optimally provide a fluidic and gaseous seal in the overlapping joint. In an alternative embodiment, the sealing members 245 are omitted.
In a preferred embodiment, the operating pressure and flow rate of the fluidic material 275 is controllably ramped down when the expansion cone 205 reaches the upper end portion 210d of the tubular member 210. In this manner, the sudden release of pressure caused by the complete extrusion of the tubular member 210 off of the expansion cone 205 can be minimized. In a preferred embodiment, the operating pressure is reduced in a substantially linear fashion from 100% to about 10% during the end of the extrusion process beginning when the expansion cone 205 is within about 5 feet from completion of the extrusion process.
Alternatively, or in combination, the wall thickness of the upper end portion 210d of the tubular member is tapered in order to gradually reduce the required operating pressure for plastically deforming and radially expanding the upper end portion of the tubular member. In this manner, shock loading of the apparatus is at least reduced.
Alternatively, or in combination, a shock absorber is provided in the support member 225 in order to absorb the shock caused by the sudden release of pressure. The shock absorber may comprise, for example, any conventional commercially available shock absorber, bumper sub, or jars adapted for use in wellbore operations.
Alternatively, or in combination, an expansion cone catching structure is provided in the upper end portion 210d of the tubular member 210 in order to catch or at least decelerate the expansion cone 205.
In a preferred embodiment, the apparatus 200 is adapted to minimize tensile, burst, and friction effects upon the tubular member 210 during the expansion process. These effects will be depend upon the geometry of the expansion cone 205, the material composition of the tubular member 210 and expansion cone 205, the inner diameter of the tubular member 210, the wall thickness of the tubular member 210, the type of lubricant, and the yield strength of the tubular member 210. In general, the thicker the wall thickness, the smaller the inner diameter, and the greater the yield strength of the tubular member 210, then the greater the operating pressures required to extrude the tubular member 210 off of the expansion cone 205.
For typical tubular members 210, the extrusion of the tubular member 210 off of the expansion cone 205 will begin when the pressure of the interior region 230 reaches, for example, approximately 500 to 9,000 psi.
During the extrusion process, the expansion cone 205 may be raised out of the expanded portion of the tubular member 210 at rates ranging, for example, from about 0 to 5 ft/sec. In a preferred embodiment, during the extrusion process, the expansion cone 205 is raised out of the expanded portion of the tubular member 210 at rates ranging from about 0 to 2 ft/sec in order to minimize the time required for the expansion process while also permitting easy control of the expansion process.
As illustrated in
In a preferred embodiment, if the fluidic seal of the overlapping joint between the upper end portion 210d of the tubular member 210 and the lower end portion 115a of the casing 115 is satisfactory, then any uncured portion of the material 255 within the expanded tubular member 210 is then removed in a conventional manner such as, for example, circulating the uncured material out of the interior of the expanded tubular member 210. The expansion cone 205 is then pulled out of the wellbore section 130 and a drill bit or mill is used in combination with a conventional drilling assembly to drill out any hardened material 255 within the tubular member 210. In a preferred embodiment, the material 255 within the annular region 260 is then allowed to fully cure.
As illustrated in
As illustrated in
In a preferred embodiment, the formation of a mono-diameter wellbore casing, as illustrated in
Referring to
In a preferred embodiment, the shoe 305 includes an upper portion 305a, an intermediate portion 305b, and a lower portion 305c having a valveable fluid passage 310 that is preferably adapted to receive a plug, dart, or other similar element for controllably sealing the fluid passage 310. In this manner, the fluid passage 310 may be optimally sealed off by introducing a plug, dart and/or ball sealing elements into the fluid passage 310.
The upper and lower portions, 305a and 305c, of the shoe 305 are preferably substantially tubular, and the intermediate portion 305b of the shoe includes corrugations 305ba-305bh. Furthermore, in a preferred embodiment, when the intermediate portion 305b of the shoe 305 is radially expanded by the application of fluid pressure to the interior 315 of the shoe 305, the inside and outside diameters of the radially expanded intermediate portion are preferably both greater than the inside and outside diameters of the upper and lower portions, 305a and 305c. In this manner, the outer circumference of the intermediate portion 305b of the shoe 305 is preferably greater than the outer circumferences of the upper and lower portions, 305a and 305c, of the shoe.
In a preferred embodiment, the shoe 305 further includes one or more through and side outlet ports in fluidic communication with the fluid passage 310. In this manner, the shoe 305 optimally injects hardenable fluidic sealing material into the region outside the shoe 305 and tubular member 210.
In an alternative embodiment, the flow passage 310 is omitted.
In a preferred embodiment, as illustrated in
In a preferred embodiment, as illustrated in
The material 255 is preferably pumped into the annular region 260 at pressures and flow rates ranging, for example, from about 0 to 5000 psi and 0 to 1,500 gallons/min, respectively. The optimum flow rate and operating pressures vary as a function of the casing and wellbore sizes, wellbore section length, available pumping equipment, and fluid properties of the fluidic material being pumped. The optimum flow rate and operating pressure are preferably determined using conventional empirical methods.
The hardenable fluidic sealing material 255 may be any number of conventional commercially available hardenable fluidic sealing materials such as, for example, slag mix, cement, latex or epoxy. In a preferred embodiment, the hardenable fluidic sealing material 255 is a blended cement prepared specifically for the particular well section being drilled from Halliburton Energy Services in Dallas, Tex. in order to provide optimal support for tubular member 210 while also maintaining optimum flow characteristics so as to minimize difficulties during the displacement of cement in the annular region 260. The optimum blend of the blended cement is preferably determined using conventional empirical methods. In several alternative embodiments, the hardenable fluidic sealing material 255 is compressible before, during, or after curing.
The annular region 260 preferably is filled with the material 255 in sufficient quantities to ensure that, upon radial expansion of the tubular member 210, the annular region 260 of the new section 130 of the wellbore 100 will be filled with the material 255.
In an alternative embodiment, the injection of the material 255 into the annular region 260 is omitted.
As illustrated in
As illustrated in
As illustrated in
As illustrated in
In an alternative embodiment, the expansion cone 205 is not lowered into the radially expanded portion of the shoe 305 prior to being radially expanded. In this manner, the upper portion 305c of the shoe 305 may be radially expanded by the radial expansion of the expansion cone 205.
In another alternative embodiment, the expansion cone 205 is not radially expanded.
As illustrated in
During the extrusion process, the expansion cone 205 may be raised out of the expanded portion of the tubular member 210. In a preferred embodiment, during the extrusion process, the expansion cone 205 is raised at approximately the same rate as the tubular member 210 is expanded in order to keep the tubular member 210 stationary relative to the new wellbore section 130. In this manner, an overlapping joint between the radially expanded tubular member 210 and the lower portion of the preexisting casing 115 may be optimally formed. In an alternative preferred embodiment, the expansion cone 205 is maintained in a stationary position during the extrusion process thereby allowing the tubular member 210 to extrude off of the expansion cone 205 and into the new wellbore section 130 under the force of gravity and the operating pressure of the interior region 230.
In a preferred embodiment, when the upper end portion 210d of the tubular member 210 and the lower portion of the preexisting casing 115 that overlap with one another are plastically deformed and radially expanded by the expansion cone 205, the expansion cone 205 is displaced out of the wellbore 100 by both the operating pressure within the region 230 and a upwardly directed axial force applied to the tubular support member 225.
The overlapping joint between the lower portion of the preexisting casing 115 and the radially expanded tubular member 210 preferably provides a gaseous and fluidic seal. In a particularly preferred embodiment, the sealing members 245 optimally provide a fluidic and gaseous seal in the overlapping joint. In an alternative embodiment, the sealing members 245 are omitted.
In a preferred embodiment, the operating pressure and flow rate of the fluidic material 275 is controllably ramped down when the expansion cone 205 reaches the upper end portion 210d of the tubular member 210. In this manner, the sudden release of pressure caused by the complete extrusion of the tubular member 210 off of the expansion cone 205 can be minimized. In a preferred embodiment, the operating pressure is reduced in a substantially linear fashion from 100% to about 10% during the end of the extrusion process beginning when the expansion cone 205 is within about 5 feet from completion of the extrusion process.
Alternatively, or in combination, the wall thickness of the upper end portion 210d of the tubular member is tapered in order to gradually reduce the required operating pressure for plastically deforming and radially expanding the upper end portion of the tubular member. In this manner, shock loading of the apparatus may be at least partially minimized.
Alternatively, or in combination, a shock absorber is provided in the support member 225 in order to absorb the shock caused by the sudden release of pressure. The shock absorber may comprise, for example, any conventional commercially available shock absorber adapted for use in wellbore operations.
Alternatively, or in combination, an expansion cone catching structure is provided in the upper end portion 210d of the tubular member 210 in order to catch or at least decelerate the expansion cone 205.
In a preferred embodiment, the apparatus 200 is adapted to minimize tensile, burst, and friction effects upon the tubular member 210 during the expansion process. These effects will be depend upon the geometry of the expansion cone 205, the material composition of the tubular member 210 and expansion cone 205, the inner diameter of the tubular member 210, the wall thickness of the tubular member 210, the type of lubricant, and the yield strength of the tubular member 210. In general, the thicker the wall thickness, the smaller the inner diameter, and the greater the yield strength of the tubular member 210, then the greater the operating pressures required to extrude the tubular member 210 off of the expansion cone 205.
For typical tubular members 210, the extrusion of the tubular member 210 off of the expansion cone 205 will begin when the pressure of the interior region 230 reaches, for example, approximately 500 to 9,000 psi.
During the extrusion process, the expansion cone 205 may be raised out of the expanded portion of the tubular member 210 at rates ranging, for example, from about 0 to 5 ft/sec. In a preferred embodiment, during the extrusion process, the expansion cone 205 is raised out of the expanded portion of the tubular member 210 at rates ranging from about 0 to 2 ft/sec in order to minimize the time required for the expansion process while also permitting easy control of the expansion process.
As illustrated in
In a preferred embodiment, if the fluidic seal of the overlapping joint between the upper end portion 210d of the tubular member 210 and the lower end portion 115a of the casing 115 is satisfactory, then any uncured portion of the material 255 within the expanded tubular member 210 is then removed in a conventional manner such as, for example, circulating the uncured material out of the interior of the expanded tubular member 210. The expansion cone 205 is then pulled out of the wellbore section 130 and a drill bit or mill is used in combination with a conventional drilling assembly to drill out any hardened material 255 within the tubular member 210. In a preferred embodiment, the material 255 within the annular region 260 is then allowed to fully cure.
As illustrated in
The method of
In a preferred embodiment, the formation of a mono-diameter wellbore casing, as illustrated in
In several alternative embodiments, the apparatus 200 and 300 are used to form and/or repair wellbore casings, pipelines, and/or structural supports.
In several alternative embodiments, the folded geometries of the shoes 215 and 305 are provided in accordance with the teachings of U.S. Pat. Nos. 5,425,559 and/or 5,794,702, the disclosures of which are incorporated herein by reference.
In an alternative embodiment, as illustrated in
As illustrated in
In an alternative embodiment, the expansion cone 410 is not lowered into the radially expanded portion of the shoe 215 prior to being radially expanded. In this manner, the upper portion 215a of the shoe 215 may be radially expanded and plastically deformed by the radial expansion of the expansion cone 410.
In another alternative embodiment, the expansion cone 410 is not radially expanded.
As illustrated in
As illustrated in
During the radial expansion process, the expansion cone 410 may be raised out of the expanded portion of the tubular member 210. In a exemplary embodiment, during the radial expansion process, the expansion cone 410 is raised at approximately the same rate as the tubular member 210 is expanded in order to keep the tubular member 210 stationary relative to the new wellbore section 130. In this manner, an overlapping joint between the radially expanded tubular member 210 and the lower portion of the preexisting casing 115 may be optimally formed. In an alternative exemplary embodiment, the expansion cone 410 is maintained in a stationary position during the radial expansion process thereby allowing the tubular member 210 to extrude off of the expansion cone 410 and into the new wellbore section 130 under the force of gravity and the operating pressure of the interior region 230.
In a exemplary embodiment, when the upper end portion 210d of the tubular member 210 and the lower portion of the preexisting casing 115 that overlap with one another are plastically deformed and radially expanded by the expansion cone 410, the expansion cone 410 is displaced out of the wellbore 100 by both the operating pressure within the region 230 and a upwardly directed axial force applied to the tubular support member 225.
The overlapping joint between the lower portion of the preexisting casing 115 and the radially expanded tubular member 210 preferably provides a gaseous and fluidic seal. In a particularly exemplary embodiment, the sealing members 245 optimally provide a fluidic and gaseous seal in the overlapping joint. In an alternative embodiment, the sealing members 245 are omitted.
In a exemplary embodiment, the operating pressure and flow rate of the fluidic material 275 is controllably ramped down when the expansion cone 410 reaches the upper end portion 210d of the tubular member 210. In this manner, the sudden release of pressure caused by the complete radial expansion of the tubular member 210 off of the expansion cone 410 can be minimized. In a exemplary embodiment, the operating pressure is reduced in a substantially linear fashion from 100% to about 10% during the end of the radial expansion process beginning when the expansion cone 410 is within about 5 feet from completion of the radial expansion process.
Alternatively, or in combination, the wall thickness of the upper end portion 210d of the tubular member is tapered in order to gradually reduce the required operating pressure for plastically deforming and radially expanding the upper end portion of the tubular member. In this manner, shock loading of the apparatus is at least reduced.
Alternatively, or in combination, a shock absorber is provided in the support member 225 in order to absorb the shock caused by the sudden release of pressure. The shock absorber may comprise, for example, any conventional commercially available shock absorber, bumper sub, or jars adapted for use in wellbore operations.
Alternatively, or in combination, an expansion cone catching structure is provided in the upper end portion 210d of the tubular member 210 in order to catch or at least decelerate the expansion cone 410.
In a exemplary embodiment, the apparatus 200 is adapted to minimize tensile, burst, and friction effects upon the tubular member 210 during the expansion process. These effects will be depend upon the geometry of the expansion cone 410, the material composition of the tubular member 210 and expansion cone 410, the inner diameter of the tubular member 210, the wall thickness of the tubular member 210, the type of lubricant, and the yield strength of the tubular member 210. In general, the thicker the wall thickness, the smaller the inner diameter, and the greater the yield strength of the tubular member 210, then the greater the operating pressures required to extrude the tubular member 210 off of the expansion cone 410.
For typical tubular members 210, the radial expansion of the tubular member 210 off of the expansion cone 410 will begin when the pressure of the interior region 230 reaches, for example, approximately 500 to 9,000 psi.
During the radial expansion process, the expansion cone 410 may be raised out of the expanded portion of the tubular member 210 at rates ranging, for example, from about 0 to 5 ft/sec. In a exemplary embodiment, during the radial expansion process, the expansion cone 410 is raised out of the expanded portion of the tubular member 210 at rates ranging from about 0 to 2 ft/sec in order to minimize the time required for the expansion process while also permitting easy control of the expansion process.
As illustrated in
In a exemplary embodiment, if the fluidic seal of the overlapping joint between the upper end portion 210d of the tubular member 210 and the lower end portion 115a of the casing 115 is satisfactory, then any uncured portion of the material 255 within the expanded tubular member 210 is then removed in a conventional manner such as, for example, circulating the uncured material out of the interior of the expanded tubular member 210. The expansion cone 410 is then pulled out of the wellbore section 130 and a drill bit or mill is used in combination with a conventional drilling assembly to drill out any hardened material 255 within the tubular member 210. In a exemplary embodiment, the material 255 within the annular region 260 is then allowed to fully cure.
As illustrated in
As illustrated in
In an exemplary embodiment, the adjustable expansion cone 410 incorporates the teachings of one or more of the following: U.S. Pat. Nos. 5,348,095, and/or 6,012,523, the disclosures of which are incorporated herein by reference, further modified in a conventional manner, to provide a plurality of adjustable stationary positions.
In a exemplary embodiment, the formation of a mono-diameter wellbore casing, as illustrated in
In an alternative embodiment, as illustrated in
As illustrated in
In an alternative embodiment, the lower expansion cone 425 is not lowered into the radially expanded portion of the shoe 215 prior to being radially expanded. In this manner, the upper portion 215a of the shoe 215 may be radially expanded and plastically deformed by the radial expansion of the lower expansion cone 425.
In another alternative embodiment, the lower expansion cone 425 is not radially expanded.
As illustrated in
As illustrated in
During the radial expansion process, the upper expansion cone 420 may be raised out of the expanded portion of the tubular member 210. In a exemplary embodiment, during the radial expansion process, the upper expansion cone 420 is raised at approximately the same rate as the tubular member 210 is expanded in order to keep the tubular member 210 stationary relative to the new wellbore section 130. In this manner, an overlapping joint between the radially expanded tubular member 210 and the lower portion of the preexisting casing 115 may be optimally formed. In an alternative exemplary embodiment, the upper expansion cone 420 is maintained in a stationary position during the radial expansion process thereby allowing the tubular member 210 to extrude off of the upper expansion cone 420 and into the new wellbore section 130 under the force of gravity and the operating pressure of the interior region 230.
In a exemplary embodiment, when the upper end portion 210d of the tubular member 210 and the lower portion of the preexisting casing 115 that overlap with one another are plastically deformed and radially expanded by the upper expansion cone 420, the upper expansion cone 420 is displaced out of the wellbore 100 by both the operating pressure within the region 230 and a upwardly directed axial force applied to the tubular support member 225.
The overlapping joint between the lower portion of the preexisting casing 115 and the radially expanded tubular member 210 preferably provides a gaseous and fluidic seal. In a particularly exemplary embodiment, the sealing members 245 optimally provide a fluidic and gaseous seal in the overlapping joint. In an alternative embodiment, the sealing members 245 are omitted.
In a exemplary embodiment, the operating pressure and flow rate of the fluidic material 275 is controllably ramped down when the upper expansion cone 420 reaches the upper end portion 210d of the tubular member 210. In this manner, the sudden release of pressure caused by the complete radial expansion of the tubular member 210 off of the upper expansion cone 420 can be minimized. In a exemplary embodiment, the operating pressure is reduced in a substantially linear fashion from 100% to about 10% during the end of the radial expansion process beginning when the upper expansion cone 420 is within about 5 feet from completion of the radial expansion process.
Alternatively, or in combination, the wall thickness of the upper end portion 210d of the tubular member is tapered in order to gradually reduce the required operating pressure for plastically deforming and radially expanding the upper end portion of the tubular member. In this manner, shock loading of the apparatus is at least reduced.
Alternatively, or in combination, a shock absorber is provided in the support member 225 in order to absorb the shock caused by the sudden release of pressure. The shock absorber may comprise, for example, any conventional commercially available shock absorber, bumper sub, or jars adapted for use in wellbore operations.
Alternatively, or in combination, an expansion cone catching structure is provided in the upper end portion 210d of the tubular member 210 in order to catch or at least decelerate the upper expansion cone 420.
In a exemplary embodiment, the apparatus 200 is adapted to minimize tensile, burst, and friction effects upon the tubular member 210 during the expansion process. These effects will be depend upon the geometries of the upper and lower expansion cones, 420 and 425, the material composition of the tubular member 210 and the upper and lower expansion cones, 420 and 425, the inner diameter of the tubular member 210, the wall thickness of the tubular member 210, the type of lubricant, and the yield strength of the tubular member 210. In general, the thicker the wall thickness, the smaller the inner diameter, and the greater the yield strength of the tubular member 210, then the greater the operating pressures required to extrude the tubular member 210 and the shoe 215 off of the upper and lower expansion cones, 420 and 425.
For typical tubular members 210, the radial expansion of the tubular member 210 off of the upper expansion cone 420 will begin when the pressure of the interior region 230 reaches, for example, approximately 500 to 9,000 psi.
During the radial expansion process, the upper expansion cone 420 may be raised out of the expanded portion of the tubular member 210 at rates ranging, for example, from about 0 to 5 ft/sec. In a exemplary embodiment, during the radial expansion process, the upper expansion cone 420 is raised out of the expanded portion of the tubular member 210 at rates ranging from about 0 to 2 ft/sec in order to minimize the time required for the expansion process while also permitting easy control of the expansion process.
As illustrated in
In a exemplary embodiment, if the fluidic seal of the overlapping joint between the upper end portion 210d of the tubular member 210 and the lower end portion 115a of the casing 115 is satisfactory, then any uncured portion of the material 255 within the expanded tubular member 210 is then removed in a conventional manner such as, for example, circulating the uncured material out of the interior of the expanded tubular member 210. The upper expansion cone 420 is then pulled out of the wellbore section 130 and a drill bit or mill is used in combination with a conventional drilling assembly to drill out any hardened material 255 within the tubular member 210. In a exemplary embodiment, the material 255 within the annular region 260 is then allowed to fully cure.
As illustrated in
As illustrated in
In an exemplary embodiment, the adjustable expansion cones, 420 and 425, incorporate the teachings of one or more of the following: U.S. Pat. Nos. 5,348,095, and/or 6,012,523, the disclosures of which are incorporated herein by reference.
In a exemplary embodiment, the formation of a mono-diameter wellbore casing, as illustrated in
An apparatus for forming a wellbore casing in a borehole located in a subterranean formation including a preexisting wellbore casing has been described that includes a support member including a first fluid passage, an expansion cone coupled to the support member including a second fluid passage fluidicly coupled to the first fluid passage, an expandable tubular liner movably coupled to the expansion cone, and an expandable shoe coupled to the expandable tubular liner. In a exemplary embodiment, the expansion cone is expandable. In a exemplary embodiment, the expandable shoe includes a valveable fluid passage for controlling the flow of fluidic materials out of the expandable shoe. In a exemplary embodiment, the expandable shoe includes: an expandable portion and a remaining portion, wherein the outer circumference of the expandable portion is greater than the outer circumference of the remaining portion. In a exemplary embodiment, the expandable portion includes: one or more inward folds. In a exemplary embodiment, the expandable portion includes: one or more corrugations. In a exemplary embodiment, the expandable shoe includes: one or more inward folds. In a exemplary embodiment, the expandable shoe includes: one or more corrugations.
A shoe has also been described that includes an upper annular portion, an intermediate annular portion, and a lower annular portion, wherein the intermediate annular portion has an outer circumference that is larger than the outer circumferences of the upper and lower annular portions. In a exemplary embodiment, the lower annular portion includes a valveable fluid passage for controlling the flow of fluidic materials out of the shoe. In a exemplary embodiment, the intermediate portion includes one or more inward folds. In a exemplary embodiment, the intermediate portion includes one or more corrugations.
A method of forming a wellbore casing in a subterranean formation having a preexisting wellbore casing positioned in a borehole has also been described that includes installing a tubular liner, an expansion cone, and a shoe in the borehole, radially expanding at least a portion of the shoe by injecting a fluidic material into the shoe, and radially expanding at least a portion of the tubular liner by injecting a fluidic material into the borehole below the expansion cone. In a exemplary embodiment, the method further includes radially expanding the expansion cone. In a exemplary embodiment, the method further includes lowering the expansion cone into the radially expanded portion of the shoe, and radially expanding the expansion cone. In a exemplary embodiment, the method further includes radially expanding at least a portion of the shoe and the tubular liner by injecting a fluidic material into the borehole below the radially expanded expansion cone. In a exemplary embodiment, the method further includes injecting a hardenable fluidic sealing material into an annulus between the tubular liner and the borehole. In a exemplary embodiment, the method further includes radially expanding at least a portion of the preexisting wellbore casing. In a exemplary embodiment, the method further includes overlapping a portion of the radially expanded tubular liner with a portion of the preexisting wellbore casing. In a exemplary embodiment, the inside diameter of the radially expanded tubular liner is substantially equal to the inside diameter of a nonoverlapping portion of the preexisting wellbore casing. In a exemplary embodiment, the method further includes applying an axial force to the expansion cone. In a exemplary embodiment, the inside diameter of the radially expanded shoe is greater than or equal to the inside diameter of the radially expanded tubular liner.
An apparatus for forming a wellbore casing in a subterranean formation having a preexisting wellbore casing positioned in a borehole has also been described that includes means for installing a tubular liner, an expansion cone, and a shoe in the borehole, means for radially expanding at least a portion of the shoe, and means for radially expanding at least a portion of the tubular liner. In a exemplary embodiment, the apparatus further includes means for radially expanding the expansion cone. In a exemplary embodiment, the apparatus further includes means for lowering the expansion cone into the radially expanded portion of the shoe, and means for radially expanding the expansion cone. In a exemplary embodiment, the apparatus further includes means for injecting a fluidic material into the borehole below the radially expanded expansion cone. In a exemplary embodiment, the apparatus further includes means for injecting a hardenable fluidic sealing material into an annulus between the tubular liner and the borehole. In a exemplary embodiment, the apparatus further includes means for radially expanding at least a portion of the preexisting wellbore casing. In a exemplary embodiment, the apparatus further includes means for overlapping a portion of the radially expanded tubular liner with a portion of the preexisting wellbore casing. In a exemplary embodiment, the inside diameter of the radially expanded tubular liner is substantially equal to the inside diameter of a nonoverlapping portion of the preexisting wellbore casing. In a exemplary embodiment, the apparatus further includes means for applying an axial force to the expansion cone. In a exemplary embodiment, the inside diameter of the radially expanded shoe is greater than or equal to the inside diameter of the radially expanded tubular liner.
An apparatus for forming a wellbore casing within a subterranean formation including a preexisting wellbore casing positioned in a borehole has also been described that includes a tubular liner and means for radially expanding and coupling the tubular liner to an overlapping portion of the preexisting wellbore casing. The inside diameter of the radially expanded tubular liner is substantially equal to the inside diameter of a non-overlapping portion of the preexisting wellbore casing.
A wellbore casing positioned in a borehole within a subterranean formation has also been described that includes a first wellbore casing and a second wellbore casing coupled to and overlapping with the first wellbore casing, wherein the second wellbore casing is coupled to the first wellbore casing by the process of: installing the second wellbore casing, an expansion cone, and a shoe in the borehole, radially expanding at least a portion of the shoe by injecting a fluidic material into the shoe, and radially expanding at least a portion of the second wellbore casing by injecting a fluidic material into the borehole below the expansion cone. In a exemplary embodiment, the process for forming the wellbore casing further includes radially expanding the expansion cone. In a exemplary embodiment, the process for forming the wellbore casing further includes lowering the expansion cone into the radially expanded portion of the shoe, and radially expanding the expansion cone. In a exemplary embodiment, the process for forming the wellbore casing further includes radially expanding at least a portion of the shoe and the second wellbore casing by injecting a fluidic material into the borehole below the radially expanded expansion cone. In a exemplary embodiment, the process for forming the wellbore casing further includes injecting a hardenable fluidic sealing material into an annulus between the second wellbore casing and the borehole. In a exemplary embodiment, the process for forming the wellbore casing further includes radially expanding at least a portion of the first wellbore casing. In a exemplary embodiment, the process for forming the wellbore casing further includes overlapping a portion of the radially expanded second wellbore casing with a portion of the first wellbore casing. In a exemplary embodiment, the inside diameter of the radially expanded second wellbore casing is substantially equal to the inside diameter of a nonoverlapping portion of the first wellbore casing. In a exemplary embodiment, the process for forming the wellbore casing further includes applying an axial force to the expansion cone. In a exemplary embodiment, the inside diameter of the radially expanded shoe is greater than or equal to the inside diameter of the radially expanded second wellbore casing.
A method of forming a tubular structure in a subterranean formation having a preexisting tubular member positioned in a borehole has also been described that includes installing a tubular liner, an expansion cone, and a shoe in the borehole, radially expanding at least a portion of the shoe by injecting a fluidic material into the shoe, and radially expanding at least a portion of the tubular liner by injecting a fluidic material into the borehole below the expansion cone. In a exemplary embodiment, the method further includes radially expanding the expansion cone. In a exemplary embodiment, the method further includes lowering the expansion cone into the radially expanded portion of the shoe, and radially expanding the expansion cone. In a exemplary embodiment, the method further includes radially expanding at least a portion of the shoe and the tubular liner by injecting a fluidic material into the borehole below the radially expanded expansion cone. In a exemplary embodiment, the method further includes injecting a hardenable fluidic sealing material into an annulus between the tubular liner and the borehole. In a exemplary embodiment, the method further includes radially expanding at least a portion of the preexisting tubular member. In a exemplary embodiment, the method further includes overlapping a portion of the radially expanded tubular liner with a portion of the preexisting tubular member. In a exemplary embodiment, the inside diameter of the radially expanded tubular liner is substantially equal to the inside diameter of a nonoverlapping portion of the preexisting tubular member. In a exemplary embodiment, the method further includes applying an axial force to the expansion cone. In a exemplary embodiment, the inside diameter of the radially expanded shoe is greater than or equal to the inside diameter of the radially expanded tubular liner.
An apparatus for forming a tubular structure in a subterranean formation having a preexisting tubular member positioned in a borehole has also been described that includes means for installing a tubular liner, an expansion cone, and a shoe in the borehole, means for radially expanding at least a portion of the shoe, and means for radially expanding at least a portion of the tubular liner. In a exemplary embodiment, the apparatus further includes means for radially expanding the expansion cone. In a exemplary embodiment, the apparatus further includes means for lowering the expansion cone into the radially expanded portion of the shoe, and means for radially expanding the expansion cone. In a exemplary embodiment, the apparatus further includes means for injecting a fluidic material into the borehole below the radially expanded expansion cone. In a exemplary embodiment, the apparatus further includes means for injecting a hardenable fluidic sealing material into an annulus between the tubular liner and the borehole. In a exemplary embodiment, the apparatus further includes means for radially expanding at least a portion of the preexisting tubular member. In a exemplary embodiment, the apparatus further includes means for overlapping a portion of the radially expanded tubular liner with a portion of the preexisting tubular member. In a exemplary embodiment, the inside diameter of the radially expanded tubular liner is substantially equal to the inside diameter of a nonoverlapping portion of the preexisting tubular member. In a exemplary embodiment, the apparatus further includes means for applying an axial force to the expansion cone. In a exemplary embodiment, the inside diameter of the radially expanded shoe is greater than or equal to the inside diameter of the radially expanded tubular liner.
An apparatus for forming a tubular structure within a subterranean formation including a preexisting tubular member positioned in a borehole has also been described that includes a tubular liner and means for radially expanding and coupling the tubular liner to an overlapping portion of the preexisting tubular member. The inside diameter of the radially expanded tubular liner is substantially equal to the inside diameter of a non-overlapping portion of the preexisting tubular member.
A tubular structure positioned in a borehole within a subterranean formation has also been described that includes a first tubular member and a second tubular member coupled to and overlapping with the first tubular member, wherein the second tubular member is coupled to the first tubular member by the process of: installing the second tubular member, an expansion cone, and a shoe in the borehole, radially expanding at least a portion of the shoe by injecting a fluidic material into the shoe, and radially expanding at least a portion of the second tubular member by injecting a fluidic material into the borehole below the expansion cone. In a exemplary embodiment, the process for forming the tubular structure further includes radially expanding the expansion cone. In a exemplary embodiment, the process for forming the tubular structure further includes lowering the expansion cone into the radially expanded portion of the shoe, and radially expanding the expansion cone. In a exemplary embodiment, the process for forming the tubular structure further includes radially expanding at least a portion of the shoe and the second tubular member by injecting a fluidic material into the borehole below the radially expanded expansion cone. In a exemplary embodiment, the process for forming the tubular structure further includes injecting a hardenable fluidic sealing material into an annulus between the second tubular member and the borehole. In a exemplary embodiment, the process for forming the tubular structure further includes radially expanding at least a portion of the first tubular member. In a exemplary embodiment, the process for forming the tubular structure further includes overlapping a portion of the radially expanded second tubular member with a portion of the first tubular member. In a exemplary embodiment, the inside diameter of the radially expanded second tubular member is substantially equal to the inside diameter of a nonoverlapping portion of the first tubular member. In a exemplary embodiment, the process for forming the tubular structure further includes applying an axial force to the expansion cone. In a exemplary embodiment, the inside diameter of the radially expanded shoe is greater than or equal to the inside diameter of the radially expanded second tubular member.
An apparatus for forming a wellbore casing in a borehole located in a subterranean formation including a preexisting wellbore casing has also been described that includes a support member including a first fluid passage, an expansion cone coupled to the support member including a second fluid passage fluidicly coupled to the first fluid passage, an expandable tubular liner movably coupled to the expansion cone, and an expandable shoe coupled to the expandable tubular liner including a valveable fluid passage for controlling the flow of fluidic materials out of the expandable shoe, an expandable portion comprising one or more inward folds, and a remaining portion coupled to the expandable portion. The outer circumference of the expandable portion is greater than the outer circumference of the remaining portion, and the expansion cone is adjustable to a plurality of stationary positions.
A method of forming a wellbore casing in a subterranean formation having a preexisting wellbore casing positioned in a borehole has also been described that includes installing a tubular liner, an adjustable expansion cone, and a shoe in the borehole, radially expanding at least a portion of the shoe by a process comprising: lowering the adjustable expansion cone into the shoe, adjusting the adjustable expansion cone to a first outside diameter, pressurizing a region within the shoe below the adjustable expansion cone using a fluidic material, and pressurizing an annular region above the adjustable expansion cone using the fluidic material, and radially expanding at least a portion of the tubular liner by a process comprising: adjusting the adjustable expansion cone to a second outside diameter, pressurizing a region within the shoe below the adjustable expansion cone using a fluidic material, and pressurizing an annular region above the adjustable expansion cone using the fluidic material. The first outside diameter of the adjustable expansion cone is greater than the second outside diameter of the adjustable expansion cone.
A system for forming a wellbore casing in a subterranean formation having a preexisting wellbore casing positioned in a borehole has also been described that includes means for installing a tubular liner, an adjustable expansion cone, and a shoe in the borehole, means for radially expanding at least a portion of the shoe comprising: means for lowering the adjustable expansion cone into the shoe, means for adjusting the adjustable expansion cone to a first outside diameter, means for pressurizing a region within the shoe below the adjustable expansion cone using a fluidic material, and means for pressurizing an annular region above the adjustable expansion cone using the fluidic material, and means for radially expanding at least a portion of the tubular liner comprising: means for adjusting the adjustable expansion cone to a second outside diameter, means for pressurizing a region within the shoe below the adjustable expansion cone using a fluidic material, and means for pressurizing an annular region above the adjustable expansion cone using the fluidic material. The first outside diameter of the adjustable expansion cone is greater than the second outside diameter of the adjustable expansion cone.
A wellbore casing positioned in a borehole within a subterranean formation has also been described that includes a first wellbore casing including: an upper portion of the first wellbore casing, and a lower portion of the first wellbore casing coupled to the upper portion of the first wellbore casing, wherein the inside diameter of the upper portion of the first wellbore casing is less than the inside diameter of the lower portion of the first wellbore casing, and a second wellbore casing comprising: an upper portion of the second wellbore casing that overlaps with and is coupled to the lower portion of the first wellbore casing, and a lower portion of the second wellbore casing coupled to the upper portion of the second wellbore casing, wherein the inside diameter of the upper portion of the second wellbore casing is less than the inside diameter of the lower portion of the second wellbore casing, and wherein the inside diameter of the upper portion of the first wellbore casing is equal to the inside diameter of the upper portion of the second wellbore casing. The second wellbore casing is coupled to the first wellbore casing by the process of: installing the second wellbore casing and an adjustable expansion cone in the borehole, radially expanding at least a portion of the lower portion of the second wellbore casing by a process comprising: lowering the adjustable expansion cone into the lower portion of the second wellbore casing, adjusting the adjustable expansion cone to a first outside diameter, pressurizing a region within the lower portion of the second wellbore casing below the adjustable expansion cone using a fluidic material, and pressurizing an annular region above the adjustable expansion cone using the fluidic material, and radially expanding at least a portion of the upper portion of the second wellbore casing by a process comprising: adjusting the adjustable expansion cone to a second outside diameter, pressurizing a region within the shoe below the adjustable expansion cone using a fluidic material, and pressurizing an annular region above the adjustable expansion cone using the fluidic material. The first outside diameter of the adjustable expansion cone is greater than the second outside diameter of the adjustable expansion cone.
An apparatus for forming a wellbore casing in a borehole located in a subterranean formation including a preexisting wellbore casing has also been described that includes a support member including a first fluid passage, a first adjustable expansion cone coupled to the support member including a second fluid passage fluidicly coupled to the first fluid passage, a second adjustable expansion cone coupled to the support member including a third fluid passage fluidicly coupled to the first fluid passage, an expandable tubular liner movably coupled to the first and second adjustable expansion cones, and an expandable shoe coupled to the expandable tubular liner comprising: a valveable fluid passage for controlling the flow of fluidic materials out of the expandable shoe, an expandable portion comprising one or more inwards folds, and a remaining portion coupled to the expandable portion. The outer circumference of the expandable portion is greater than the outer circumference of the remaining portion.
A method of forming a wellbore casing in a subterranean formation having a preexisting wellbore casing positioned in a borehole has also been described that includes installing a tubular liner, an upper adjustable expansion cone, a lower adjustable expansion cone, and a shoe in the borehole, radially expanding at least a portion of the shoe by a process comprising: lowering the lower adjustable expansion cone into the shoe, adjusting the lower adjustable expansion cone to an increased outside diameter, pressurizing a region within the shoe below the lower adjustable expansion cone using a fluidic material, and pressurizing an annular region above the upper adjustable expansion cone using the fluidic material, and radially expanding at least a portion of the tubular liner by a process comprising: adjusting the lower adjustable expansion cone to a reduced outside diameter, adjusting the upper adjustable expansion cone to an increased outside diameter, pressurizing a region within the shoe below the lower adjustable expansion cone using a fluidic material, and pressurizing an annular region above the upper adjustable expansion cone using the fluidic material. The increased outside diameter of the lower adjustable expansion cone is greater than the increased outside diameter of the upper adjustable expansion cone, and the reduced outside diameter of the lower adjustable expansion cone is less than or equal to the increased outside diameter of the upper adjustable expansion cone.
A system for forming a wellbore casing in a subterranean formation having a preexisting wellbore casing positioned in a borehole has also been described that includes means for installing a tubular liner, an upper adjustable expansion cone, a lower adjustable expansion cone, and a shoe in the borehole, means for radially expanding at least a portion of the shoe that comprises: means for lowering the lower adjustable expansion cone into the shoe, means for adjusting the lower adjustable expansion cone to an increased outside diameter, means for pressurizing a region within the shoe below the lower adjustable expansion cone using a fluidic material, and means for pressurizing an annular region above the upper adjustable expansion cone using the fluidic material, and means for radially expanding at least a portion of the tubular liner that comprises: means for adjusting the lower adjustable expansion cone to a reduced outside diameter, means for adjusting the upper adjustable expansion cone to an increased outside diameter, means for pressurizing a region within the shoe below the lower adjustable expansion cone using a fluidic material, and means for pressurizing an annular region above the upper adjustable expansion cone using the fluidic material. The increased outside diameter of the lower adjustable expansion cone is greater than the increased outside diameter of the upper adjustable expansion cone, and the reduced outside diameter of the lower adjustable expansion cone is less than or equal to the increased outside diameter of the upper adjustable expansion cone.
A wellbore casing positioned in a borehole within a subterranean formation has also been described that includes a first wellbore casing comprising: an upper portion of the first wellbore casing, and a lower portion of the first wellbore casing coupled to the upper portion of the first wellbore casing, wherein the inside diameter of the upper portion of the first wellbore casing is less than the inside diameter of the lower portion of the first wellbore casing, and a second wellbore casing comprising: an upper portion of the second wellbore casing that overlaps with and is coupled to the lower portion of the first wellbore casing, and a lower portion of the second wellbore casing coupled to the upper portion of the second wellbore casing. The inside diameter of the upper portion of the second wellbore casing is less than the inside diameter of the lower portion of the second wellbore casing, and the inside diameter of the upper portion of the first wellbore casing is equal to the inside diameter of the upper portion of the second wellbore casing. The second wellbore casing is coupled to the first wellbore casing by the process of: installing the second wellbore casing, an upper adjustable expansion cone, and a lower adjustable expansion cone in the borehole, radially expanding at least a portion of the shoe by a process comprising: lowering the lower adjustable expansion cone into the lower portion of the second wellbore casing, adjusting the lower adjustable expansion cone to an increased outside diameter, pressurizing a region within the lower portion of the second wellbore casing below the lower adjustable expansion cone using a fluidic material, and pressurizing an annular region above the upper adjustable expansion cone using the fluidic material, and radially expanding at least a portion of the upper portion of the second wellbore casing by a process comprising: adjusting the lower adjustable expansion cone to a reduced outside diameter, adjusting the upper adjustable expansion cone to an increased outside diameter, pressurizing a region within the lower portion of the second wellbore casing below the lower adjustable expansion cone using a fluidic material, and pressurizing an annular region above the upper adjustable expansion cone using the fluidic material. The increased outside diameter of the lower adjustable expansion cone is greater than the increased outside diameter of the upper adjustable expansion cone, and the reduced outside diameter of the lower adjustable expansion cone is less than or equal to the increased outside diameter of the upper adjustable expansion cone.
Although illustrative embodiments of the invention have been shown and described, a wide range of modification, changes and substitution is contemplated in the foregoing disclosure. In some instances, some features of the present invention may be employed without a corresponding use of the other features. Accordingly, it is appropriate that the appended claims be construed broadly and in a manner consistent with the scope of the invention.
The present application is the national stage patent application for PCT patent application serial number PCT/US03/00609, filed on Jan. 9, 2003, which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 60/357,372, filed on Feb. 15, 2002, the disclosures of which are incorporated herein by reference. The present application is a continuation-in-part of U.S. utility patent application Ser. No. 11/644,101, filed on Aug. 13, 2003, which was the national stage of PCT application serial number PCT/US02/04353, filed Feb. 14, 2002, which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 60/270,007, filed on Feb. 20, 2001, which was a continuation-in-part of U.S. utility application Ser. No. 09/454,139, issued as U.S. Pat. No. 6,497,289, filed on Dec. 3, 1999, which claimed the benefit of the filing date of U.S. provisional patent application Ser. No. 60/111,293, filed on Dec. 7, 1998, the disclosures of which are incorporated herein by reference. The present application is related to the following: (1) U.S. patent application Ser. No. 09/454,139, filed on Dec. 3, 1999, (2) U.S. patent application Ser. No. 09/510,913, filed on Feb. 23, 2000, (3)U.S. patent application Ser. No. 09/502,350, filed on Feb. 10, 2000, (4) U.S. patent application Ser. No. 09/440,338, filed on Nov. 15, 1999, (5) U.S. patent application Ser. No. 09/523,460, filed on Mar. 10, 2000, (6) U.S. patent application Ser. No. 09/512,895, filed on Feb. 24, 2000, (7) U.S. patent application Ser. No. 09/511,941, filed on Feb. 24, 2000, (8) U.S. patent application Ser. No. 09/588,946, filed on Jun. 7, 2000, (9) U.S. patent application Ser. No. 09/559,122, filed on Apr. 26, 2000, (10) PCT patent application serial no. PCT/US00/18635, filed on Jul. 9, 2000, (11) U.S. provisional patent application Ser. No. 60/162,671, filed on Nov. 1, 1999, (12) U.S. provisional patent application Ser. No. 60/154,047, filed on Sep. 16, 1999, (13) U.S. provisional patent application Ser. No. 60/159,082, filed on Oct. 12, 1999, (14) U.S. provisional patent application Ser. No. 60/159,039, filed on Oct. 12, 1999, (15) U.S. provisional patent application Ser. No. 60/159,033, filed on Oct. 12, 1999, (16) U.S. provisional patent application Ser. No. 60/212,359, filed on Jun. 19, 2000, (17) U.S. provisional patent application Ser. No. 60/165,228, filed on Nov. 12, 1999, (18) U.S. provisional patent application Ser. No. 60/221,443, filed on Jul. 28, 2000, (19) U.S. provisional patent application Ser. No. 60/221,645, filed on Jul. 28, 2000, (20) U.S. provisional patent application Ser. No. 60/233,638.
Filing Document | Filing Date | Country | Kind | 371c Date |
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PCT/US03/00609 | 1/9/2003 | WO | 00 | 7/14/2005 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO03/071086 | 8/28/2003 | WO | A |
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Number | Date | Country | |
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20050269107 A1 | Dec 2005 | US |
Number | Date | Country | |
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60270007 | Feb 2001 | US | |
60111293 | Dec 1998 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 11644101 | US | |
Child | 10504361 | US | |
Parent | 09454139 | Dec 1999 | US |
Child | 11644101 | US |