Present embodiments relate generally to the field of drilling and processing of wells, and, more particularly, to a system and method to facilitate coupling and/or decoupling of threaded connections between mineral extraction system components, such as mandrels, actuators, drillpipe elements, tubular elements, and the like.
In conventional oil and gas operations, a well is typically drilled to a desired depth with a drill string, which includes drill pipe and a drilling bottom hole assembly (BHA). Once the desired depth is reached, the drill string is removed from the hole and casing is run into the vacant hole. In some conventional operations, the casing may be installed as part of the drilling process. A technique that involves running casing at the same time the well is being drilled may be referred to as “casing-while-drilling.”
Casing may be defined as pipe or tubular that is placed in a well to prevent the well from caving in, to contain fluids, and to assist with efficient extraction of product. When the casing is run into the well, the casing may be externally or internally gripped by a grappling system installed under a top drive. Specifically, the grappling system may exert an external pressure or force or an internal pressure or force on the casing to prevent the casing from sliding off the grappling system. With the grappling system engaged with the casing, the weight of the casing is transferred to the top drive that hoists and supports the casing for positioning down hole in the well. As will be appreciated, the grappling system may have one or more differently sized components for lifting casing of different sizes (e.g., diameters).
When the casing is properly positioned within a hole or well, the casing is typically cemented in place by pumping cement through the casing and into an annulus formed between the casing and the hole (e.g., a wellbore or parent casing). Once a casing string has been positioned and cemented in place or installed, the process may be repeated via the now installed casing string. For example, the well may be drilled further by passing a drilling BHA through the installed casing string and drilling. Further, additional casing strings may be subsequently passed through the installed casing string (during or after drilling) for installation. Indeed, numerous levels of casing may be employed in a well. For example, once a first string of casing is in place, the well may be drilled further and another string of casing (an inner string of casing) with an outside diameter that is accommodated by the inside diameter of the previously installed casing may be run through the existing casing. Additional strings of casing may be added in this manner such that numerous concentric strings of casing are positioned in the well, and such that each inner string of casing extends deeper than the previously installed casing or parent casing string.
In accordance with one aspect of the disclosure, a mineral extraction system including a locking clamp configured to be secured to a first tubular member, wherein the locking clamp comprises an outer radial surface having a first geometry and a rotary table adapter. The rotary table adapter includes a base and an extension extending from the base, wherein the extension defines a recess, the recess comprises an inner radial surface having a second geometry, wherein the first geometry and the second geometry correspond with one another, and the rotary table adapter is configured to be disposed within a rotary table of a drilling rig.
In accordance with another aspect of the disclosure, a method includes coupling a locking clamp to a first tubular of a drilling system, wherein the locking clamp and the first tubular are rotationally fixed relative to one another, positioning the locking clamp within a locking clamp recess defined by an extension of a rotary table adapter, wherein the recess comprises a first geometry corresponding to a second geometry of the locking clamp, disposing the rotary table adapter within a rotary table adapter recess formed in a drilling rig floor, and rotating a second tubular relative to the first tubular to thread or unthread the first tubular to or from the second tubular.
In accordance with a further embodiment of the disclosure, a drilling system includes a first tubular, a second tubular configured to threadingly engage with the first tubular, a locking clamp secured to the first tubular, wherein the locking clamp comprises an outer radial surface having a first geometry, a rotary table adapter comprising a locking clamp recess, wherein the locking clamp recess comprises an inner radial surface having a second geometry, and the rotary table adapter defines a third geometry, and a drilling rig floor comprising a rotary table adapter recess defining a fourth geometry, wherein the first geometry and the second geometry correspond with one another, and the third geometry and the fourth geometry correspond with one another.
These and other features, aspects, and advantages of the present disclosure will become better understood when the following detailed description is read with reference to the accompanying drawings in which like characters represent like parts throughout the drawings, wherein:
Embodiments of the present disclosure are directed to a threaded connection breakout system for enabling coupling and decoupling of threaded connections between two tubular components of a mineral extraction system. For example, the disclosed threaded connection breakout systems may be used to create or “make up” and disconnect or “break” a threaded connection between a mandrel of a tubular grappling system and an actuator of a tubular grappling system. Tubular grappling systems include internal tubular grappling systems, which grip a tubular by applying an internal pressure or force on an internal surface of the tubular. A contact surface of the grappling system (e.g., grapple) engages (e.g., “bites”) with the tubular to grip the tubular. The contact surfaces of the tubular grappling system may be driven outward to engage with the internal surface of the tubular by a mandrel that is actuated by an actuator of the tubular grappling system. In certain embodiments, the mandrel and the actuator of the tubular grappling system are connected to one another via a threaded connection.
Gripping different sizes of tubular may require differently sized components of the tubular grappling system. For example, a tubular grappling system may use mandrels of different sizes to grip tubulars of different sizes (e.g., different diameters). However, the tubular grappling system may use the same actuator to grip all sizes of tubular. In other words, a universal actuator may be used with mandrels of different sizes to grip tubulars of different sizes (e.g., diameters). Thus, if an operator wishes to grip different sizes of tubular, the mandrel of the tubular grappling system may be disconnected (e.g., unthreaded) from the actuator of the tubular grappling system, and another mandrel of a different size may be threaded to the actuator. Unfortunately, unthreading a mandrel from an actuator traditionally involves the rigging out (e.g., uninstallation) of the tubular grappling system and disassembly of the mandrel from the actuator at a location remote from a drilling location (e.g., a machine shop). As will be appreciated, this procedure costs money and takes time. Accordingly, present embodiments include the threaded connection breakout system for enabling connection and disconnection (e.g., threading and unthreading) of a mandrel to and from an actuator of a tubular grappling system on a drilling rig floor.
The threaded connection breakout system utilizes a rotary table on the drilling rig (or other recess in the drilling rig floor) to transmit and/or react torque and allow for breakout (or makeup) of a threaded connection (e.g., between a mandrel and actuator). As described in detail below, the threaded connection breakout system includes a rotary table adapter and a locking clamp configured to grip the mandrel to be connected or disconnected with the actuator via a threaded connection. The rotary table adapter engages with the rotary table on the drilling rig floor. When the locking clamp is in gripping engagement with the mandrel, the locking clamp is then engaged with the rotary table adapter, in the manner described below. Thereafter, torque may be applied to the mandrel (e.g., via a mechanical tong or via the top drive), the torque may be transferred to the locking clamp, and the torque will react with the rotary table adapter and the rotary table. In other words, the threaded connection breakout system may hold the mandrel in place, while the actuator may be rotated to makeup or break a threaded connection between the mandrel and the actuator.
Turning now to the drawings,
When a new length of tubular 38 is added to the casing string 28, a top drive 40, hoisted by the traveling block 22, positions the tubular 38 above the wellbore 30 before coupling with the casing string 28. The top drive 40 includes a tubular grappling system 42 that couples the tubular 38 to the top drive 40. In certain embodiments, the tubular grappling system 42 is inserted into (e.g., “stabbed into”) the tubular 38 and then exerts a force on an internal diameter of the tubular 38 to block the tubular 38 from sliding off the grappling system 42 when the top drive 40 hoists and supports the tubular 38. In such embodiments, the tubular grappling system 42 includes contact surfaces 44 (e.g., grapples) that are driven radially outward by a mandrel 46 to enable engagement between internal surface of the tubular 38 and the contact surfaces 44. For example, the mandrel 46 may have one or more inclined surfaces, and the contact surfaces 44 may be translated down the mandrel 46 (e.g., via an actuator 48 of the tubular grappling system 42) to drive the contact surfaces 44 radially outward to engage with the internal surface of the tubular 38.
In order to grip different sizes of tubular 38 (e.g., tubulars of different diameters), the mandrel 46 of the tubular grappling system 42 may be removed and replaced with another mandrel 46 of a different size. For example, larger mandrels 46 may be used to grip larger tubulars 38, and smaller mandrels 46 may be used to grip smaller tubulars 38. To change out mandrels 46 in the tubular grappling system 42, the mandrel 46 may be unthreaded from the actuator 48 of the tubular grappling system 42, and another mandrel 46 of a different size may be threaded to the actuator 48. To enable this removal and replacement of mandrels 46 at the rig floor 12 instead of at a remote location, such as a factory or workshop, present embodiments include a threaded connection breakout system 50. In the illustrated embodiment, the threaded connection breakout system 50 is set aside on the drilling rig floor 12 and is not in use. As mentioned above, the threaded connection breakout system 50 includes a rotary table adapter 52 and a locking clamp 54. The rotary table adapter 52 engages with the rotary table 32 on the drilling rig floor 12, while the locking clamp 54 grips the mandrel 46 to be unthreaded from the actuator 48. When the locking clamp 54 is in gripping engagement with the mandrel 46, the locking clamp 54 is then engaged with the rotary table adapter 52, and the actuator 48 may be unthreaded from the mandrel 46 while the threaded connection breakout system 50 holds the mandrel 46 in place. Another mandrel 46 of a different size may be threaded to the actuator 48 using a similar reverse process. Details of the rotary table adapter 52 and the locking clamp 54 are described below.
It should be noted that the illustration of
To engage with the rotary table 32, the rotary table adapter 52 is disposed within a recess 100 (e.g., a recess having the rotary table 32 or a rotary table recess) of the rotary table 32. To this end, the rotary table adapter 52 may have a similar geometry to the recess 100, such that movement (e.g., rotational and/or lateral movement) of the rotary table adapter 52 is restricted when the rotary table adapter 52 is disposed within the recess 100. In the illustrated embodiment, the rotary table adapter 52 includes two sections 102 (e.g., a first section 104 and a second section 106) that cooperatively form the rotary table adapter 52. However, other embodiments of the rotary table adapter 52 may include other numbers of sections 102 (e.g., 1, 3, 4, 5, or more sections 102). The sections 102 may be formed from metal (e.g., steel) or other durable material. Each section 102 also includes one or more handles 108 to enable placement of the sections 102 within the recess 100 and removal of the sections 102 from the recess 100.
The rotary table adapter 52 includes a locking clamp recess 110 formed by an extension 112 extending from a base 114 of the rotary table adapter 52. In the illustrated embodiment, each section 102 of the rotary table adapter 52 includes a portion 116 (e.g., a half portion) of the extension 112. Together the respective portion 116 of each section 102 forms the extension 112. The locking clamp recess 110 and the extension 112 have a geometry that corresponds to a geometry of the locking clamp 54. More particularly, an inner radial surface 118 of the extension 112 has a shape that corresponds to the shape of an outer radial surface 120 of the locking clamp 54. In the illustrated embodiment, the inner radial surface 118 of the extension 112 and the outer radial surface 120 of the locking clamp 54 each have a generally hexagonal shape or geometry. However, in other embodiments, the shape or geometry of the inner radial surface 118 and outer radial surface 120 may be different (e.g., square, pentagonal, octagonal, etc.). The matching or similar shapes of the locking clamp 54 and the extension 112 enable the extension 112 to block or restrict movement (e.g., rotational movement) of the locking clamp 54 when the locking clamp 54 is positioned within the locking clamp recess 110. Thus, when the locking clamp 54 is clamped and secured to the mandrel 46 and the locking clamp 54 is positioned within the locking clamp recess 110 of the rotary table adapter 52, rotation of the locking clamp 54 and the mandrel 46 is restricted. Therefore, the actuator 48 of the grappling system 42 may be rotated (e.g., via the top drive 40 or a mechanical tong) and the mandrel 46 may be held rotationally in place to enable threading and/or unthreading of the mandrel 46 to and/or from the actuator 48.
The locking clamp recess 110 also includes a shelf or shoulder 122 at an axial bottom 124 of the locking clamp recess 110. The shoulder 122 extends radially inward relative to a central axis 126 of the threaded connection breakout system 50 and the grappling system 42. In the illustrated embodiment, each section 102 of the rotary table adapter 52 includes a portion 128 (e.g., a half portion) of the shoulder 122. The shoulder 122 may support the mandrel 46 and the locking clamp 54 when unthreading of the mandrel 46 from the actuator 48 is complete and the top drive 40 and the actuator 48 are being lifted away from the rig floor 12. Additionally, when threading of the mandrel 46 to the actuator 48 is desired, the locking clamp 54 engaged with the mandrel 46 may be placed within the locking clamp recess 110 and may be supported by the shoulder 122. Thereafter, the actuator 48 may be lowered to the mandrel 46, and the actuator 48 may be rotated to thread the actuator 48 to the mandrel 46 while the mandrel 46 is held rotationally in place by the threaded connection breakout system 50.
The locking clamp 54 includes a clamp body 150 (e.g., generally annular body) having a first half 152 and a second half 154. The first half 152 and the second half 154 couple to one another to form the locking clamp 54 having the outer radial surface 120. As discussed above, the outer radial surface 120 of the locking clamp 54 has a geometry (e.g., hexagonal geometry) that corresponds to the geometry of the inner radial surface 118 of the locking clamp recess 110 in the rotary table adapter 52. As used herein, the term “correspond” refers to the matching or complimentary geometries of components that enable one component to fit securely and/or snuggly within another component to enable restriction of movement (e.g., lateral and/or rotational movement) of the components relative to one another when the components are assembled or fit within one another. For example, the geometries of the outer radial surface 120 of the locking clamp 54 and the inner radial surface 118 of the locking clamp recess 110 correspond with one another because the locking clamp 54 fits securely and/or snuggly within the locking clamp recess 110 to restrict lateral and rotational movement of the locking clamp 54 and the locking clamp recess 110 relative to one another. When the locking clamp 54 is clamped or coupled to the mandrel 46, the first and second halves 152 and 154 may be disposed on opposite sides of the mandrel 46 and may then be coupled to one another with the mandrel 46 disposed in a central aperture 156 of the clamp body 150.
In the illustrated embodiment, the first and second halves 152 and 154 are coupled to one another via bolts 158 (e.g., socket head bolts). For example, four bolts 158 may extend through respective apertures 160 formed in the first half 152 and threadingly engage with respective apertures 162 of the second half 154. Similarly, four bolts 158 may extend through respective apertures 164 formed in the second half 154 and threadingly engage with respective apertures 166 of the first half 152. In certain embodiments, a locking washer 168 may be disposed about each of the bolts 158. The bolts 158 may be tightened to the first and second halves 152 and 154 of the clamp body 150 with a mechanical hand tool or other suitable device.
To enable a rotationally fixed connection between the locking clamp 54 and the mandrel 46, the locking clamp 54 includes dies 170. When the first and second halves 152 and 154 of the locking clamp 54 are disposed on opposite sides of the mandrel 46 and are coupled to one another, each of the dies 170 “bites” into the outer surface of the mandrel 46. In this manner, the locking clamp 54 grips the mandrel 46 and creates the rotationally fixed connection between the locking clamp 54 and the mandrel 46. Each die 170 is disposed in a respective recess 172 formed in an inner radial surface 174 of the clamp body 150. The dies 170 and recesses 172 each have a tapered geometry that enables radial retention of the dies 170 within the respective recesses 172. In certain embodiments, the dies 170 may be standard, commercially-available dies (e.g., off-the-shelf dies), similar to those used in a mechanical tong. The dies 170 are axially retained within the recesses 172 via retention plates 176 disposed on opposite axial ends 178 of the clamp body 150. As shown in the illustrated embodiment, the retention plates 176 may be held in place by bolts 180 (e.g., flush mounted bolts). While the illustrated embodiment of the locking clamp 54 includes four dies 170 (i.e., two dies 170 in each of the first and second halves 152 and 154), other embodiments may include any suitable number of dies (e.g., 2, 3, 5, 6, 7, 8, or more). Additionally, the dies 170 may be spaced equidistantly about a circumference of the clamp body 150 or the dies 170 may be spaced at varying distances about the clamp body 150.
As mentioned above, different locking clamps 54 may be used for differently sized mandrels 46, each of which may be used with the universal actuator 48 and the grappling system 42. For example, one locking clamp 54 for one sized mandrel 46 may have an inner diameter 182 having a first size. For another locking clamp 54 to be used with a different sized mandrel 46, the inner diameter 182 may have a different size (e.g., smaller or larger). However, the different clamps 54 may each have a similar outer diameter 184. In this way, the different locking clamps 54 may be used with the same rotary table adapter 52. Other embodiments of the threaded connection breakout system 50 may include locking clamps 54 having different outer diameters 184 and may therefore use different rotary table adapters 52 having differently sized locking clamp recesses 110.
While the disclosed embodiments of the threaded connection breakout system 50 have been described in the context of making and/or breaking a threaded connection between the mandrel 46 and the actuator 48 of the grappling system 42, the disclosed embodiments may also be used to make or break threaded connections between any tubular members used with the drilling rig 10. For example, the threaded connection breakout system 50 may be used to make or break threaded connections between other actuators, saver subs, drill pipe, casing, tubing, or other tubular members. As will be appreciated, the inner diameter 182 of the locking clamp 54 may be sized or dimensioned such that the locking clamp 54 may be used with any tubular to be threaded or unthreaded from another tubular member.
As discussed above, the threaded connection breakout system 50 utilizes the rotary table 32 on the drilling rig floor 12 to transmit and/or react torque and allow for breakout (or makeup) of a threaded connection (e.g., threaded connection 202). The threaded connection breakout system 50 includes the rotary table adapter 52 and the locking clamp 54 configured to grip the mandrel 46 (or other tubular member) to be connected or disconnected with the actuator 48 (or other tubular member) via a threaded connection. The rotary table adapter 52 engages with the rotary table 32 on the drilling rig floor 12. When the locking clamp 54 is in gripping engagement with the mandrel 46, the locking clamp 54 is then engaged with the extension 112 of the rotary table adapter 52. Thereafter, torque may be applied to the mandrel 46 (e.g., via a mechanical tong or via the actuator 48 threaded to the mandrel 46), the torque may be transferred to the locking clamp 54, and the torque will react with the rotary table adapter 52 and the rotary table 32. In other words, the threaded connection breakout system 50 may hold the mandrel 46 in place, while the actuator 48 may be rotated to makeup or break the threaded connection 202 between the mandrel 46 and the actuator 48. In this manner, the threaded connection 202 between the mandrel 46 and the actuator 48 may be made or broken at a drilling site instead of at a machine shop or other remote location.
While only certain features of the present disclosure have been illustrated and described herein, many modifications and changes will occur to those skilled in the art. It is, therefore, to be understood that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the present disclosure.
This application is a Non-Provisional Application claiming priority to U.S. Provisional Application No. 62/329,941, entitled “THREADED CONNECTION MANAGEMENT SYSTEM AND METHOD,” filed Apr. 29, 2016, which is hereby incorporated by reference in its entirety for all purposes.
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PCT/US2017/030142 International Search Report and Written Opinion dated Sep. 21, 2017. |
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20170314344 A1 | Nov 2017 | US |
Number | Date | Country | |
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62329941 | Apr 2016 | US |