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公开(公告)号：US10077625B2
公开(公告)日：2018-09-18
申请号：US15055854
申请日：2016-02-29
IPC分类号： E21B33/1295 , E21B33/129 , E21B33/128
CPC分类号： E21B33/1293 , E21B33/128
摘要： A mandrel and a packer outer assembly are formed to create spring compartments on opposed sides of a sealing element. The outer assembly is shear pinned to the mandrel to minimize spring travel during setting. Once set in the normal way the presence of the springs transfers load and sustained loads through the connected tubular string in either direction. A load coming from downhole and acting in an uphole direction first compresses the spring located uphole from the sealing assembly so that the loading goes behind the sealing assembly and into the upper spring and ultimately to the upper slips. The reverse happens when the force is coming from uphole of the sealing assembly and acting in a downhole direction. The springs can be a coil, a stack of Belleville washers, fluid pushed through an orifice, a resilient material or a contained compressible fluid, to name some examples.
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公开(公告)号：US20180209238A1
公开(公告)日：2018-07-26
申请号：US15414176
申请日：2017-01-24
IPC分类号： E21B33/12 , E21B29/00 , E21B17/042
摘要： A string from the surface is connected to a packer extension with a thread to provide a metal to metal seal for production or injection through the packer. The thread provides a metal to metal seal. The initial string is released from the packer extension by a tubular cut made with a cutting tool above the thread that provides the metal to metal seal to the packer extension. An outer sleeve surrounds an expanded length of wall which is the target cut zone above the threaded connection. A cut through the tubular does not cut the outer sleeve. The outer sleeve features a left handed square thread to engage a known released tool run in on a string to connect to the packer release mechanism and release the packer for removal with the release tool suspended from a string.
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公开(公告)号：US20170058630A1
公开(公告)日：2017-03-02
申请号：US14839292
申请日：2015-08-28
发明人： Christopher J. Limb , Frank J. Maenza , Nicholas S. Conner , Robert J. Taylor , Gary L. Anderson
IPC分类号： E21B33/12 , E21B33/128 , E21B33/129
CPC分类号： E21B33/128 , E21B23/004 , E21B33/1292
摘要： An articulated debris barrier folds on itself to extend radially to span a surrounding annular gap when the tool associated with it is set. The debris barrier can be used with a packer or bridge plug. The set position of the packer or plug is locked and another lock holds the extended position of the debris barrier. The debris barrier lock can be a snap ring that extends into a groove brought into alignment with it during the setting. Alternatively the lock for the debris barrier can be a body lock ring. In either case, release and retrieval of the packer or plug involves undermining of the locking feature for the debris barrier so that the debris barrier can extend while retracting from the borehole wall so that the barrier and the associated packer or plug can be removed together.
摘要翻译： 当与其相关联的工具被设置时，铰接的碎片障碍物在其自身上折叠以径向延伸以跨越周围的环形间隙。 碎片屏障可以与封隔器或桥塞一起使用。 封隔器或插头的设置位置被锁定，另一个锁定保持碎片屏障的延伸位置。 碎片阻挡锁可以是在安装期间延伸到与其对准的凹槽中的卡环。 或者，用于碎片障碍物的锁可以是身体锁定环。 在任一情况下，封隔器或插塞的释放和取出包括破坏碎片屏障的锁定特征，使得碎片阻挡物能够在从井壁延伸回缩的同时延伸，使得阻挡层和相关的封隔器或塞可以一起被移除。
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公开(公告)号：US20170247974A1
公开(公告)日：2017-08-31
申请号：US15055854
申请日：2016-02-29
IPC分类号： E21B33/129 , E21B33/128
CPC分类号： E21B33/1293 , E21B33/128 , E21B33/1285 , E21B33/1295
摘要： A mandrel and a packer outer assembly are formed to create spring compartments on opposed sides of a sealing element. The outer assembly is shear pinned to the mandrel to minimize spring travel during setting. Once set in the normal way the presence of the springs transfers load and sustained loads through the connected tubular string in either direction. A load coming from downhole and acting in an uphole direction first compresses the spring located uphole from the sealing assembly so that the loading goes behind the sealing assembly and into the upper spring and ultimately to the upper slips. The reverse happens when the force is coming from uphole of the sealing assembly and acting in a downhole direction. The springs can be a coil, a stack of Belleville washers, fluid pushed through an orifice, a resilient material or a contained compressible fluid, to name some examples.
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公开(公告)号：US20180023368A1
公开(公告)日：2018-01-25
申请号：US15586977
申请日：2017-05-04
IPC分类号： E21B33/129 , E21B23/00 , E21B33/12
CPC分类号： E21B33/129 , E21B23/00 , E21B33/12 , E21B33/1208 , E21B33/128 , E21B33/1293
摘要： A T-shaped slip is retained in an opening of a slip ring to drive the slip in opposed directions to and away from the surrounding borehole wall along a cone. The slip ring and cone do not come together when the slip is engaged. The opening allows release of a lock ring first with the slip engaged followed by release of the slip from the borehole wall. The slip ring and cone come together during removal from the borehole. A travel stop on the axial slip movement is provided to prevent guides on the slip from exiting a track or dovetail on the cone when the slip ring and cone are in contact during removal of the plug or packer. Extension of the guide from the cone track can happen if the slip moves through an enlarged portion of the borehole. The travel stop prevents this.
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公开(公告)号：US20170234091A1
公开(公告)日：2017-08-17
申请号：US15041548
申请日：2016-02-11
IPC分类号： E21B23/04 , E21B23/06 , E21B33/12 , E21B47/14 , E21B34/10 , E21B34/06 , E21B33/134 , E21B47/12 , E21B34/16 , E21B23/01
CPC分类号： E21B34/063 , E21B34/10
摘要： A hydraulically operated downhole tool located at a depth where control line hydrostatic pressure would normally set the tool is temporarily isolated from hydrostatic pressure and changes thereto from well exposure or downhole operations until properly located. A removable barrier is placed in the control line to the tool at a height from the tool that limits the hydrostatic force exposed to the actuation mechanism for the tool. The preferred barrier is a rupture disc that is selectively broken with applied pressure from a remote location, typically the surface above the well. The mounting depth of the barrier can be varied to control the maximum hydrostatic pressure seen by the tool as it is advanced to the intended position.
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公开(公告)号：US20170122063A1
公开(公告)日：2017-05-04
申请号：US14928597
申请日：2015-10-30
发明人： Larry J. Urban , Gary L. Anderson
IPC分类号： E21B33/129 , E21B23/01
CPC分类号： E21B33/1293 , E21B23/01 , E21B33/128
摘要： A retrievable compression set packer is sequentially released. First the sealing element is allowed to relax. Then the upper slip has wedging action that forces it against a surrounding tubular relaxed. After that the upper slips are pulled up to retract them fully allowing the packer to come out. These sequential actions are done with a mandrel movement in one direction. The sealing element is released with undermining a collet by aligning collet heads with a recess on the mandrel. The slip force release happens with mandrel movement forcing a ring into a wedge such that circumferential force on slip segments is reduced or eliminated when the wedge is pushed out of its conforming slot allowing for circumferential flexibility of the slip seat. The mandrel then picks up a slip ring that retracts the slip segments on the slip seat and the packer is removed.
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公开(公告)号：US20160290093A1
公开(公告)日：2016-10-06
申请号：US14954525
申请日：2015-11-30
发明人： James C. Doane , Jason M. Harper , Yingqing Xu , Barbara A. Pratt , Gary L. Anderson , David S. Bishop , Antonio C. Ruffo , Robert J. Taylor , Anton David , David K. Acquaye
IPC分类号： E21B33/128 , E21B33/129
CPC分类号： E21B33/128 , E21B33/129 , E21B33/1291
摘要： A compression set sealing element preferably 85A-95A TDI-Ester Polyurethane is compressed axially and retained against extrusion by CEM anti-extrusion rings. The compressed state of the sealing element is locked in by a degradable lock ring assembly. The mandrel is secured to an upper end of a slip cone and a breakable slip ring is secured by a wireline setting tool until the set position is reached. The slip ring breaks into segments that are pulled up the slip cone as the setting tool pushes on a sleeve to axially compress the sealing element and lock in the set. The sealing element is retained against extrusion by CEM anti-extrusion rings. When the setting tool is removed a ball seat is exposed for delivery of a ball to build pressure into the formation for fracturing. The entirety of the plug then disintegrates from well fluid exposure.
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公开(公告)号：US20160290092A1
公开(公告)日：2016-10-06
申请号：US14677415
申请日：2015-04-02
发明人： James C. Doane , Jason M. Harper , Yingqing Xu , Barbara A. Pratt , Gary L. Anderson , David S. Bishop , Antonio C. Ruffo , Robert J. Taylor , David K. Acquaye
IPC分类号： E21B33/128
CPC分类号： E21B33/128
摘要： A compression set sealing element preferably 85A-95A TDI-Ester Polyurethane is compressed axially and retained against extrusion by CEM anti-extrusion rings. The compressed state of the sealing element is locked in by a degradable lock ring assembly. The mandrel is secured to an upper end of a slip cone and a breakable slip ring is secured by a wireline setting tool until the set position is reached. The slip ring breaks into segments that are pulled up the slip cone as the setting tool pushes on a sleeve to axially compress the sealing element and lock in the set. The sealing element is retained against extrusion by CEM anti-extrusion rings. When the setting tool is removed a ball seat is exposed for delivery of a ball to build pressure into the formation for fracturing. The entirety of the plug then disintegrates from well fluid exposure.
摘要翻译： 压缩永久密封元件优选85A-95A TDI-Ester聚氨酯被轴向压缩并保持抵抗CEM抗挤出环挤压。 密封元件的压缩状态由可降解的锁环组件锁定。 心轴被固定到滑动锥体的上端，并且可滑动的滑环通过有线设置工具固定，直到到达设定位置。 当安装工具推动套筒以轴向压缩密封元件并锁定在组件中时，滑环突破成滑动锥体上拉的段。 密封元件通过CEM抗挤压环保持抵抗挤出。 当固定工具被移除时，球座被暴露以输送球以将压力施加到地层中用于压裂。 然后，整个塞子从良好的流体暴露中分解。
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