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1. 发明授权

US4378847A Valve 失效
公开(公告)号：US4378847A
公开(公告)日：1983-04-05
申请号：US232711
申请日：1981-02-09
申请人： Dhirajlal C. Patel , Robert B. Wheeler
发明人： Dhirajlal C. Patel , Robert B. Wheeler
IPC分类号： E21B34/00 , E21B34/06 , E21B34/10 , E21B34/12 , E21B34/14 , E21B43/04
CPC分类号： E21B34/14 , E21B34/063 , E21B34/103 , E21B34/12 , E21B43/045 , E21B2034/005 , Y10T137/87981
摘要： A method for protecting a well formation during gravel packing in which a back pressure valve is held off of its seat while gravel is being placed in the well, is automatically closed as the wash pipe is removed from the screen and in which the valve is returned to open position by a force exerted from above, either hydraulic or mechanical.A valve is held open by a prop-out which is removable to permit the valve to swing to closed position and thereafter the valve is again opened in response to mechanical or hydraulic force from above.

2. 发明授权

US4378842A Valve 失效
标题翻译：阀
公开(公告)号：US4378842A
公开(公告)日：1983-04-05
申请号：US232710
申请日：1981-02-09
申请人： Dhirajlal C. Patel
发明人： Dhirajlal C. Patel
IPC分类号： E21B34/00 , E21B34/06 , E21B34/10 , E21B34/12 , E21B34/14 , E21B43/04
CPC分类号： E21B34/14 , E21B34/063 , E21B34/103 , E21B34/12 , E21B43/045 , E21B2034/005
摘要： A method for protecting a well formation during gravel packing in which a back pressure valve is held off of its seat while gravel is being placed in the well, is automatically closed as the wash pipe is removed from the screen and in which the valve is returned to open position by a force exerted from above, either hydraulic or mechanical.A valve is held open by a prop-out which is removable to permit the valve to swing to closed position and thereafter the valve is again opened in response to mechanical or hydraulic force from above.
摘要翻译：一种用于在砾石填充过程中保护井形成的方法，其中当砾石被放置在井中时，背压阀被保持在其座位上，当洗涤管从筛网移除并且其中阀被返回时，其自动关闭通过从上方施加的力（液压或机械）打开位置。通过可拆卸的推动器将阀门打开，以允许阀门摆动到关闭位置，此后，阀门响应于来自上方的机械或液压力再次打开。

3. 发明授权

US5404955A Releasable running tool for setting well tool 失效
标题翻译：可释放的运行工具，用于设置好工具
公开(公告)号：US5404955A
公开(公告)日：1995-04-11
申请号：US101713
申请日：1993-08-02
申请人： Ralph H. Echols, III , Dhirajlal C. Patel , Tommy F. Grigsby
发明人： Ralph H. Echols, III , Dhirajlal C. Patel , Tommy F. Grigsby
IPC分类号： E21B23/00 , E21B23/06
CPC分类号： E21B23/06 , E21B23/00
摘要： A well tool assembly and a method of operating same including a clutch which provides a rotary-driving connection between a running tool and well tool mandrel when the running tool is rotated in a first direction (e.g. clockwise) and has cammed surfaces which ride up on complementary cammed surfaces on the mandrel to disengage the clutch when the running tool is rotated in a second (e.g. counterclockwise) or opposite direction. Once the clutch is disengaged, the running tool can be disconnected from the mandrel by rotating the running tool in said first direction. The clutch can be disengaged either hydraulically at the same time a well tool (e.g. a packer) is being hydraulically set or by rotation of the running tool in the second direction in the event the well tool assembly becomes stuck before the assembly reaches its destination.
摘要翻译：一种钻井工具组件及其操作方法，包括离合器，当离合器在第一方向（例如顺时针）上旋转运动工具时，该离合器提供运行工具和井身工具心轴之间的旋转驱动连接，并且具有骑马的凸轮当行走工具在第二（例如逆时针）或相反方向旋转时，心轴上的互补的凸轮表面脱离离合器。一旦离合器脱离，通过沿着所述第一方向旋转运行的工具，运行工具可以与心轴分离。离合器可以同时液压地脱开，同时井具（例如封隔器）被液压地设置，或者在组件到达其目的地之前井工具组件被卡住的情况下沿着第二方向旋转。

4. 发明授权

US5413180A One trip backwash/sand control system with extendable washpipe isolation 失效
标题翻译：一次回洗/防砂控制系统，具有可扩展的洗手盆隔离
公开(公告)号：US5413180A
公开(公告)日：1995-05-09
申请号：US99857
申请日：1993-07-30
申请人： Colby M. Ross , Henry L. Restarick , Ralph H. Echols, III , Phillip T. Thomas , Dhirajlal C. Patel
发明人： Colby M. Ross , Henry L. Restarick , Ralph H. Echols, III , Phillip T. Thomas , Dhirajlal C. Patel
IPC分类号： E21B23/04 , E21B23/06 , E21B33/12 , E21B33/126 , E21B33/1295 , E21B34/00 , E21B34/06 , E21B37/08 , E21B43/04 , E21B43/10
CPC分类号： E21B33/1208 , E21B23/06 , E21B33/126 , E21B33/1295 , E21B34/063 , E21B37/08 , E21B43/04 , E21B43/10 , E21B2034/005
摘要： A travel joint and latching assembly is connected below a gravel pack service tool to set an isolation assembly while performing backwashing and gravel pack operations, in a single trip. The travel joint is protected against inadvertent expansion by a positive mechanical lock assembly which isolates and decouples mechanical loading forces which may arise during the setting of the packer and during gravel pack operations. Inadvertent set of the hydraulic packer during backwashing operations is prevented by a hydraulic setting tool which includes a shear sleeve and an expandable C-ring drop ball seat.
摘要翻译：旅行接头和闩锁组件连接在砾石包装服务工具下方，以在单次行驶中执行反洗和砾石包装操作时设置隔离组件。行程接头可以防止意外膨胀，这是一种积极的机械锁定组件，它能够隔离和解除在封隔器设置期间和砾石充填操作期间可能出现的机械负载力。通过包括剪切套筒和可膨胀的C形圈落球座的液压固定工具防止反冲洗操作期间的液压封隔器的意外组合。

5. 发明授权

US4420041A Method of using a valve in gravel packing 失效
标题翻译：在砾石包装中使用阀门的方法
公开(公告)号：US4420041A
公开(公告)日：1983-12-13
申请号：US439862
申请日：1982-11-08
申请人： Dhirajlal C. Patel
发明人： Dhirajlal C. Patel
IPC分类号： E21B34/00 , E21B34/06 , E21B34/10 , E21B34/12 , E21B34/14 , E21B43/04 , E21B37/08
CPC分类号： E21B34/14 , E21B34/063 , E21B34/10 , E21B34/12 , E21B43/045 , E21B2034/005
摘要： A method for protecting a well formation during gravel packing in which a back pressure valve is held off of its seat while gravel is being placed in the well, is automatically closed as the wash pipe is removed from the screen and in which the valve is returned to open position by a force exerted from above, either hydraulic or mechanical.A valve is held open by a prop-out which is removable to permit the valve to swing to closed position and thereafter the valve is again opened in response to mechanical or hydraulic force from above.
摘要翻译：一种用于在砾石填充过程中保护井形成的方法，其中当砾石被放置在井中时，背压阀被保持在其座位上，当洗涤管从筛网移除并且其中阀被返回时，其自动关闭通过从上方施加的力（液压或机械）打开位置。通过可拆卸的推动器将阀门打开，以允许阀门摆动到关闭位置，此后，阀门响应于来自上方的机械或液压力再次打开。

6. 发明授权

US06378609B1 Universal washdown system for gravel packing and fracturing 失效
$Universal washdown system for gravel packing and fracturing$
标题翻译：用于砾石包装和压裂的通用冲洗系统
公开(公告)号：US06378609B1
公开(公告)日：2002-04-30
申请号：US09455018
申请日：1999-12-09
申请人： Dean S. Oneal , Kevin C. Serrette , Ervin Charlie Becker, III , Dhirajlal C. Patel
发明人： Dean S. Oneal , Kevin C. Serrette , Ervin Charlie Becker, III , Dhirajlal C. Patel
IPC分类号： E21B3312
CPC分类号： E21B43/045
摘要： A universal washdown system for circulating fluid through a wellbore to clean debris therefrom and to gravel-pack a production zone is provided. The system includes a production assembly with a multi-position service tool assembly disposed therein. The multi-position service tool is connected to and sealingly engages a packer that is included in the production assembly. The multi-position service tool assembly moves from a first to a second position in the production assembly by pulling longitudinally thereon. The apparatus is lowered into the well with the service tool connected to the production assembly in the first position. When the service tool assembly is in the second position, fluid passing down through a longitudinal central flow passage defined therethrough is communicated with an annulus defined between a liner assembly and the wellbore through crossover ports defined in the service tool to allow a gravel pack fluid to pass into a desired formation.
摘要翻译：提供了一种通用的冲洗系统，用于使流体通过井筒循环以从其中清除碎屑并将生产区砾石包装。该系统包括具有设置在其中的多位置维修工具组件的生产组件。多位置维修工具连接到密封地接合包括在生产组件中的封隔器。多位置维修工具组件通过在其上纵向牵拉而从生产组件中的第一位置移动到第二位置。在第一位置连接到生产组件的维修工具将设备下降到井中。当维修工具组件处于第二位置时，通过限定穿过其中的纵向中心流动通道的流体通过限定在服务工具中的交叉端口与限定在衬套组件和井眼之间的环形空间连通，以允许砾石充填流体进入所需的地层。

7. 发明授权

US5641023A Shifting tool for a subterranean completion structure 失效
标题翻译：用于地下完井结构的移位工具
公开(公告)号：US5641023A
公开(公告)日：1997-06-24
申请号：US511029
申请日：1995-08-03
申请人： Colby M. Ross , Dhirajlal C. Patel , Ronnie D. Finley
发明人： Colby M. Ross , Dhirajlal C. Patel , Ronnie D. Finley
IPC分类号： E21B34/00 , E21B34/14
CPC分类号： E21B34/14 , E21B2034/005
摘要： In a well having a substantially annular completion structure therein, the completion structure having portions of lesser and greater inner diameter and an axially-shiftable element associated with the portion of greater inner diameter, the axially-shiftable element having an inner diameter greater than a diameter of the portion of lesser inner diameter, a shifting tool for, and method of, axially shifting the axially-shiftable element. The shifting tool comprises: (1) a first shifting tool portion having a first shifting profile associated therewith, the first shifting tool portion adapted to pass through the portion of lesser inner diameter and (2) a second shifting tool portion having a second shifting profile associated therewith, the first shifting profile engageable with the second shifting tool portion to cause the second shifting tool portion to move in concert with the first shifting tool portion, the second shifting profile engageable with the axially-shiftable element to cause the axially-shiftable element to move in concert with the second shifting tool portion, the first and second shifting tool portions thereby cooperable to provide substantial axial forces to shift the axially-shiftable element.
摘要翻译：在其中具有基本上环形的完井结构的井中，完井结构具有较小和较大内径的部分和与较大内径部分相关联的可轴向移动的元件，该轴向可移动元件的内径大于直径较小内径的部分，用于轴向移动可轴向移动的元件的换档工具和方法。换档工具包括：（1）第一移位工具部分，其具有与其相关联的第一变速轮廓，第一换档工具部分适于穿过较小内径的部分;以及（2）第二换档工具部分，具有第二换档轮廓所述第一移动轮廓可与所述第二换档工具部分接合，以使所述第二换档工具部分与所述第一换档工具部分一致地移动，所述第二换档轮廓可与所述可轴向移动的元件接合，以使所述可轴向移动元件与第二换档工具部分一起移动，第一和第二换档工具部分由此配合以提供实质的轴向力以移动可轴向移动的元件。

8. 发明授权

US5343949A Isolation washpipe for earth well completions and method for use in gravel packing a well 失效
标题翻译：用于泥土完井的隔离冲洗管道和用于砾石充填井的方法
公开(公告)号：US5343949A
公开(公告)日：1994-09-06
申请号：US943100
申请日：1992-09-10
申请人： Colby M. Ross , Dhirajlal C. Patel , Timothy F. LaBruyere
发明人： Colby M. Ross , Dhirajlal C. Patel , Timothy F. LaBruyere
IPC分类号： E21B17/07 , E21B23/02 , E21B33/12 , E21B33/124 , E21B34/12 , E21B43/04 , E21B43/10 , E21B43/14 , E21B43/00
CPC分类号： E21B43/14 , E21B17/07 , E21B23/02 , E21B33/12 , E21B33/124 , E21B34/12 , E21B43/045 , E21B43/10
摘要： A zonal isolation washpipe system for isolating a production zone which intersects a wellbore from communication with the surface comprises a seal assembly adapted for sealing engagement within the bore of a well packer disposed about the external circumference of one end of a tubular washpipe, a releasable connector system on the other end of the washpipe which provides means for retrieval of the washpipe from the well bore is placed in sealing engagement by a releasable telescoping expansion joint which is resistant to undesired or premature extension.When it is desired to place the isolated zone on production, a tubing perforator, such as a jet perforator which is commonly known in the art is lowered into the bore of the wash pipe to a location adjacent previously formed perforations in the casing and the wash pipe is perforated.A method for gravel packing a well using the described tools is also presented.
摘要翻译：用于隔离与井筒相交的生产区域与区域连通的区域隔离冲洗管系统包括密封组件，该密封组件适于密封接合在围绕管状洗手水管一端的外圆周设置的井封隔器的孔内，可释放连接器提供用于从井眼中取出洗手水的装置的排水管的另一端处的系统通过可防止不期望或过早延伸的可释放的伸缩式膨胀接头进行密封接合。当期望将隔离区域放置在生产中时，诸如本领域中通常已知的喷射穿孔器的管道穿孔器被降低到洗涤管的孔中到与套管中先前形成的穿孔相邻的位置，并且洗涤管道穿孔。还提出了使用所述工具砾石包装井的方法。

9. 发明授权

US5343953A Through-tubing recirculating tool assembly for well completions 失效
标题翻译：管道循环工具组件，用于完井
公开(公告)号：US5343953A
公开(公告)日：1994-09-06
申请号：US110851
申请日：1993-08-24
申请人： Dhirajlal C. Patel , Tommy F. Grigsby
发明人： Dhirajlal C. Patel , Tommy F. Grigsby
IPC分类号： E21B17/06 , E21B23/04 , E21B37/08 , E21B43/04 , E21B47/09 , E21B37/04
CPC分类号： E21B17/06 , E21B23/04 , E21B37/08 , E21B43/04 , E21B47/091
摘要： A recirculating tool assembly is lowered on a length of coil tubing into the production tubing of a well completion to a location above side wall perforations in the production tubing which have become obstructed. The tool assembly includes an upper tool portion telescoped into and releasably latched within a lower sealing and tubing extension portion. Recirculating fluid is pumped down the coil tubing, flowed through a first tool assembly passage, and downwardly discharged into the production tubing. A portion of the discharged fluid is forced outwardly through the production tubing perforations to remove the obstructions therefrom, and the remainder of the discharged fluid is forced upwardly through a second tool assembly passage into the annulus between the coil tubing and the production tubing for return to the surface. After this recirculation process is completed the upper tool assembly portion is unlatched from the lower assembly portion, using fluid pressure within the coil tubing, and removed from the production tubing. An alternate embodiment of the tool assembly is used to form a gravel pack internally around additional perforations formed in the production tubing before the tool assembly is lowered into place therein. After the upper tool assembly portion is unlatched and removed, production fluid flows into the production tubing through these additional perforations and then flows into the lower portion of the tool assembly, through a sand screen structure carried thereon, for delivery to the surface.
摘要翻译：循环工具组件在一定长度的线圈管上下降到完井的生产管道中，该管道已经被堵塞在生产管道中的侧壁穿孔上方。工具组件包括可伸缩并可释放地锁定在下部密封和管道延伸部分内的上部工具部分。再循环流体被卷绕在线圈管上，流过第一工具组合通道，并向下排放到生产管道中。排出的流体的一部分被迫向外通过生产管道穿孔以从其中移除阻塞物，并且排出的流体的其余部分被向上推动通过第二工具组件通道进入盘管和生产管道之间的环形空间，以返回到表面。在该再循环过程完成之后，利用线圈管内的流体压力将上部工具组件部分从下部组件部分解开，并从生产管道中移除。工具组件的替代实施例用于在工具组件下降到位之前在生产管道中形成的附加穿孔内部形成砾石包装。在上部工具组装部分被解锁和移除之后，生产流体通过这些附加的穿孔流入生产管道，然后通过其上承载的砂筛结构流入工具组件的下部，以输送到表面。

10. 发明授权

US4671354A Well packer 失效
标题翻译：好包装
公开(公告)号：US4671354A
公开(公告)日：1987-06-09
申请号：US770149
申请日：1985-08-27
申请人： William D. Henderson , Dhirajlal C. Patel , Dennis D. Rood , Richard M. Sproul
发明人： William D. Henderson , Dhirajlal C. Patel , Dennis D. Rood , Richard M. Sproul
IPC分类号： E21B33/129 , E21B33/128
CPC分类号： E21B33/1292
摘要： A well packer adapted to be set and reset in a well bore without removal of the packer from the well bore including a packer mandrel adapted to be connected with a tubing string, an interlocking segment assembly on the packer mandrel for releasable connection with the mandrel, a drag spring assembly connected with the interlocking segment assembly for frictional engagement with a well bore wall, a locking slip assembly coupled with the drag spring assembly for locking the packer with the well bore wall, a seal element package assembly connected with slip assembly for sealing around the packer mandrel with the well bore wall, and a detent ring between the slip assembly and the seal element package permitting initial setting of the upper ends of the slips and preloading of the seal element package preliminary to final setting of the slips and expansion of the seal element package.
摘要翻译：一种井式打包机，其适于在井眼中设置和复位，而不从井筒中移除封隔器，包括适于与油管柱连接的封隔器心轴，封隔器心轴上的互锁段组件，用于与心轴的可释放连接，与所述互锁段组件连接以用于与井眼壁摩擦接合的阻力弹簧组件，与所述牵引弹簧组件耦合以用于将所述封隔器与所述井筒壁锁定的锁定滑动组件，与滑动组件连接的密封元件封装组件，用于密封围绕具有井筒壁的封隔器心轴，以及在滑动组件和密封元件组件之间的止动环，允许初始设定滑动件的上端并预先装载密封元件包装以初步设定滑动件和扩张密封元件包装。

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