Tubular system operators are always receptive to new methods and devices to permit actuation of tubular tools such as those in industries concerned with earth formation boreholes, such as hydrocarbon recovery and gas sequestration, for example. It is not uncommon for various operations in these industries to utilize a temporary or permanent plugging device against which to build pressure to cause an actuation.
Sometimes actuating is desirable at a first location, and subsequently at a second location. Moreover, additional actuating locations may also be desired and the actuation can be sequential for the locations or otherwise. Systems employing droppable members, such as balls, for example, are typically used for just such purpose. The ball is dropped to a ball seat positioned at the desired location within the borehole thereby creating the desired plug to facilitate the actuation.
In applications where the first location is further from surface than the second location, it is common to employ seats with sequentially smaller diameters at locations further from the surface. Dropping balls having sequentially larger diameters allows the ball seat furthest from surface to be plugged first (by a ball whose diameter is complementary to that seat), followed by the ball seat second furthest from surface (by a ball whose diameter is complementary to that seat) and so on.
The foregoing system, however, creates increasingly restrictive dimensions within the borehole that can negatively impact flow therethrough as well as limit the size of tools that can be run into the borehole. Systems and methods that allow operators to increase the number of actuatable locations within a borehole without the drawbacks mentioned would be well received in the art.
Disclosed herein is a tubular actuating system. The system includes, a tubular, a plurality of same plugs runnable within the tubular, a sleeve disposed at the tubular, and at least one slide that is movably disposed at the sleeve between at least a first position and a second position, the at least one slide is configured to be seatingly engagable with a first of the plurality of same plugs when in the first position and seatingly engagable with a second of the plurality of same plugs when in the second position.
Further disclosed herein is a method of actuating a tubular actuator. The method includes, running a first plug within a tubular, engaging an actuator with the first plug, altering the actuator with the first plug, moving at least one slide with the altering of the actuator, running a second plug dimensioned substantially the same as the first plug within the tubular, seatingly engaging the at least one slide with the second plug, pressuring up against the second plug, and moving the actuator.
Further disclosed herein is a tubular actuator. The actuator includes, a sleeve, and at least one slide movably disposed at the sleeve configured to be moved during passage of a first engagable member thereby to be subsequently seatingly engagable with a subsequent engagable member, and the subsequent engagable member is substantially the same as the first engagable member.
The following descriptions should not be considered limiting in any way. With reference to the accompanying drawings, like elements are numbered alike:
A detailed description of one or more embodiments of the disclosed apparatus and method are presented herein by way of exemplification and not limitation with reference to the Figures.
Embodiments of tubular actuating systems disclosed herein include actuators disposed in a tubular that are altered during passage of a first plug run thereby such that the actuators are seatingly engagable with a second plug of the same dimensions run thereagainst.
Referring to
A flapper 24, is biased from a first position (
Once the flapper 24 is in the second position as illustrated in
When the second ball 22B is seatingly engaged in the port 64 of the flapper 24, pressure built up against the second ball 22B, the flapper 24 and the sleeve 34 can create longitudinal forces adequate to shear the shear screws 38. After the shear screws 38 have sheared the sleeve 34 of the actuator 18 can be urged to move relative to the tubular 14 to actuate a tool (not shown). This actuation can be used to open ports (not shown) for example through the tubular 14 in a tubular valving application, for example.
Referring to
The restrictive portion 130 is configured to allow the restrictive portion 130 to expand radially outwardly when the support sleeve 126 is in the second position. A recess 134 in an inner wall 138 of the tubular 114 that longitudinally aligns with the restrictive portion 130 can facilitate the radial expansion. The radial expansion allows the plug 122A seatingly engaged with the restrictive portion 130 to pass therethrough. After the plug 122A has passed therethrough it is free to seatingly engage with a seat 142 of an alternate actuator 146, for example, to initiate actuation thereof.
The plug 122A is free to pass the flapper 124 when the flapper 124 is in the longitudinal orientation and seatingly engagable with a port 152 in the flapper 124 when the flapper 124 is in the radial orientation. As such, the support sleeve 126 of the actuator 118 is configured to be moved from the first position to the second position by the movable engagement of the first plug 122A with the restrictive portion 130 as described above. The movement of the support sleeve 126 allows the flapper 124 to move from the longitudinal orientation to the radial orientation. A biasing member, such as a torsional spring, not shown, for example, may facilitate such movement. Once the flapper 124 is in the radial orientation it is positioned to seatingly engage the second plug 122B when it is run thereagainst. Pressure built against the second plug 122B run against the flapper 124 can urge the flapper 124 and the support sleeve 126 of the actuator 118 to move thereby creating an actuational movement from the second position to a third position, for example, as shown in
The foregoing tubular actuating system 110 allows an operator to double the number of actuations possible with a single sized plug 122A, 122B. This is possible since the first plug 122A is able to pass the actuator 118, albeit altering the actuator 118 in the process, and functionally engage the alternate actuator 146, while the second plug 122B, that is dimensioned the same as the first plug 122A, is functionally engagable with the actuator 118.
A useful application of the tubular actuating system 110 disclosed herein is to increase the number of frac zones possible within a wellbore. By using the actuators 118 and 146 to open ports 154 and 150 in the tubular 114 respectively, the system 110 allows for both ports 150, 154 to be opened sequentially with the single sized plugs 122A, 122B.
Referring to
After the first ends 246 have moved beyond the support surface 254 they can be urged radially outwardly by the first plug 222A passing therethrough, thereby defeating the defeatable seat 250. The first plug 222A, after having passed through the actuator 218, can then be utilized downstream against another actuator seat (not shown) for example. The movement of the slides 220 relative to the sleeve 234 causes second ends 258 to collapse radially inwardly in response to at least one of pivoting action of the slides 220 about a fulcrum 262 in slidable contact with the sleeve 234, and ramping of a radial extension 266 of the slides 220 along a ramped surface 270 on the sleeve 234. Once the slides 220 are moved relative to the sleeve 234 the radial extensions 266 are supported from radial expansion by the support surface 274 thereby maintaining a seat 278 seatingly receptive of the second plug 222B run against the actuator 218. It should be noted that the slides 220 might also be made to flex in the fashion of a collet thereby allowing the second ends 258 to collapse radially inwardly during the formation of the seat 278.
Pressure can be built against the second plug 222B seated against the seat 278 until release members 282, illustrated herein as shear screws, that longitudinally fix the sleeve 234 to the tubular 214, release. Such release allows the sleeve 234 to move to a downstream position relative to the tubular 214 in an actuation motion as depicted in
The slides 220 can be reset to the first position relative to the sleeve 234, as shown in
Referring to
While the invention has been described with reference to an exemplary embodiment or embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment(s) disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the claims. Also, in the drawings and the description, there have been disclosed exemplary embodiments of the invention and, although specific terms may have been employed, they are unless otherwise stated used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention therefore not being so limited. Moreover, the use of the terms first, second, etc. do not denote any order or importance, but rather the terms first, second, etc. are used to distinguish one element from another. Furthermore, the use of the terms a, an, etc. do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item.
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