公开(公告)号：US06533037B2

公开(公告)日：2003-03-18

申请号：US09725779

申请日：2000-11-29

申请人： David M. Eslinger ,  Howard L. McGill ,  James M. Costley ,  Randolph J. Sheffield ,  Warren M. Zemlak

发明人： David M. Eslinger ,  Howard L. McGill ,  James M. Costley ,  Randolph J. Sheffield ,  Warren M. Zemlak

IPC分类号： E21B3410

CPC分类号： E21B43/26 ,  E21B34/10

摘要： A tool string, such as one used for performing fracturing operations or other types of operations, includes a valve, a valve operator, and a sealing assembly that in one arrangement includes packers to define a sealed zone. The tool string is carried on a tubing, through which fluid flow may be pumped to the sealed zone. The valve operator is actuated in response to fluid flow above a predetermined flow rate. When the flow rate at greater than the predetermined flow rate does not exist, the valve operator remains in a first position that corresponds to the valve being open. However, in response to a fluid flow rate at greater than the predetermined flow rate, the valve operator is actuated to a second position to close the valve.

公开(公告)号：US06776239B2

公开(公告)日：2004-08-17

申请号：US10078963

申请日：2002-02-19

申请人： David M. Eslinger ,  Stephen D. Hill ,  Randolph J. Sheffield ,  Howard L. McGill ,  James M. Costley

发明人： David M. Eslinger ,  Stephen D. Hill ,  Randolph J. Sheffield ,  Howard L. McGill ,  James M. Costley

IPC分类号： E21B2300

CPC分类号： E21B23/006 ,  E21B33/124 ,  E21B33/1243 ,  E21B43/26

摘要： A tubing conveyed multi-position well treating tool having a tubular housing and a tubular inner member which are relatively positionable at “Set”, “Treat”, “Dump” and “Release” positions actuated by a mechanical indexing mechanism. The indexing mechanism is loaded by a spring, such as a compressed gas spring or mechanical spring, which urges the tubular housing away from the tubing connection of the inner tubular member, thus requiring no set-down forces for tool actuation or indexing. The treating tool is anchored within the well casing by hydraulic pressure actuated buttons, thus eliminating the typical requirement for anchoring actuation by set-down forces. The treating tool is sealed within the casing by pressure energized packers which are activated by the hydraulic pressure of fluid supplied from the tubing. The tool provides a bypass passage to allow communication of the zones above and below the tool while isolating the straddled interval to be treated.

摘要翻译： 管道输送多位置井处理工具，其具有管状壳体和管状内部构件，其可在通过机械分度机构致动的“设定”，“处理”，“倾倒”和“释放”位置处相对定位。 分度机构由诸如压缩气体弹簧或机械弹簧的弹簧加载，其将管状壳体推离远离内部管状构件的管道连接，因此不需要用于工具致动或分度的设置力。 处理工具通过液压致动按钮锚固在井套内，从而消除了通过下压力锚定致动的典型要求。 处理工具通过由通过管道供应的流体的液压激活的压力通电封隔器密封在壳体内。 该工具提供旁路通道，以允许在工具上方和下方的区域通信，同时隔离待处理的跨距间隔。

公开(公告)号：US07011157B2

公开(公告)日：2006-03-14

申请号：US10629163

申请日：2003-07-29

申请人： James M. Costley ,  David M. Eslinger ,  Randolph J. Sheffield ,  L. Michael McKee

发明人： James M. Costley ,  David M. Eslinger ,  Randolph J. Sheffield ,  L. Michael McKee

IPC分类号： E21B33/124 ,  E21B37/00

CPC分类号： E21B37/08 ,  E21B43/26

摘要： A method and apparatus for fluid treatment of a selected interval of a well and then cleaning the selected interval and the apparatus of treatment residue. An straddle tool is run into the well to treatment depth on fluid supplying tubing and has upper and lower packers that establish sealing with the casing and define an annular interval between the packers and between the tool and casing. Fluid, such as fracturing fluid, is pumped through the tubing to the tool and is diverted through an outlet port of the tool into an upper portion of the annular interval. Fluid then flows from a lower portion of the annular interval through an inlet port below the outlet port and at low flow rate is dumped into the casing through a pressure responsive dump valve. The outlet port and inlet port are located to accomplish cleaning of residue from the packers.

摘要翻译： 一种用于对所选间隔的孔进行流体处理，然后清洁所选择的间隔和处理残留物的装置的方法和装置。 跨越工具进入井中以处理流体供应管道的深度，并具有上部和下部封隔器，其与壳体建立密封并且在封隔器之间以及在工具和壳体之间限定环形间隔。 流体，例如压裂液，被泵送通过管道到工具，并且通过工具的出口转入环形间隔的上部。 流体然后从环形间隔的下部流过出口端口下方的入口端口，并且低流量通过压力响应的泄放阀被倾倒到壳体中。 出口和入口位于为了完成对封隔器的残留物的清洁。

公开(公告)号：US06425443B1

公开(公告)日：2002-07-30

申请号：US09716986

申请日：2000-11-20

申请人： Stephen D. Hill ,  James M. Costley ,  David M. Eslinger ,  Mark C. Oettli ,  Randolph J. Sheffield

发明人： Stephen D. Hill ,  James M. Costley ,  David M. Eslinger ,  Mark C. Oettli ,  Randolph J. Sheffield

IPC分类号： E21B2300

CPC分类号： E21B17/06 ,  Y10S285/90

摘要： A disconnect for facilitating release of a tool at a downhole, wellbore location. The disconnect utilizes an upper portion and a lower portion connected at least in part by a shear member. The disconnect uses a plurality of pressure areas to selectively expose the lower portion to balanced, counteracting axial forces. The pressure areas allow release or disconnection of the upper portion from the lower portion upon application of a predetermined tensile load without subjecting the tubing to an undesirably high tensile load.

摘要翻译： 断开以便于在井下，井眼位置释放工具。 断开器利用至少部分地由剪切构件连接的上部和下部。 断路器使用多个压力区域来选择性地将下部暴露于平衡的抵消轴向力。 当施加预定的拉伸载荷时，压力区域允许上部与下部的释放或断开，而不会使管道处于不期望的高拉伸载荷。

公开(公告)号：US06668938B2

公开(公告)日：2003-12-30

申请号：US10098121

申请日：2002-03-13

申请人： Randolph J. Sheffield ,  David M. Eslinger ,  Mark C. Oettli ,  Jose F. Hurtado

发明人： Randolph J. Sheffield ,  David M. Eslinger ,  Mark C. Oettli ,  Jose F. Hurtado

IPC分类号： E21B33128

CPC分类号： E21B33/124 ,  E21B33/12

摘要： An improved cup packer for use on wellbore tools is disclosed. The open end of the cup packer bore is filled with an elastomer to prevent the intrusion of sand and debris into the space between the cup packer and the wellbore tool on which it is mounted. In an alternative embodiment of the invention, the packer body includes an angularly protruding section at at least one of its ends, wherein the longitudinal dimension of the packer body is at its maximum at its bore. In an additional alternative embodiment of the invention, the open end of the packer is sealed by a screen to prevent the intrusion of sand and debris into the space between the cup packer and the wellbore tool on which it is mounted.

公开(公告)号：US06655461B2

公开(公告)日：2003-12-02

申请号：US10113500

申请日：2002-04-01

申请人： David M. Eslinger ,  Randolph J. Sheffield ,  Mark C. Oettli

发明人： David M. Eslinger ,  Randolph J. Sheffield ,  Mark C. Oettli

IPC分类号： E21B4316

CPC分类号： E21B33/124 ,  E21B33/138

摘要： A straddle packer tool for treatment of wells has a tool body supporting sealing elements in spaced relation for defining a sealed annulus zone within a wellbore. The tool body defines a treatment fluid passage having treatment ports that open to the sealed annulus zone for formation fracturing or other well treatment. The tool body has a bypass passage therethrough which is isolated from the treatment fluid passage and communicates with the wellbore above and below the sealed annulus zone. A check valve permits downward flow of well fluid from the bypass passage into the wellbore below the tool and prevents upward flow of fluid into the bypass passage. Bypass ports conduct fluid flow to and from the bypass passage and the wellbore above and below the sealed annulus zone. A packer actuated bypass valve is opened or closed to control the flow of well fluid within the bypass passage.

摘要翻译： 用于处理井的跨越式封隔器工具具有工具主体，该工具主体以间隔开的方式支撑密封元件，用于在井筒内限定密封的环空区域。 工具主体限定了处理流体通道，其具有通向密封环空区域的处理口，用于形成压裂或其它井处理。 工具主体具有穿过其的旁通通道，其与处理流体通道隔离并且与密封的环带区域上方和下方的井眼相连通。 止回阀允许井流体从旁路通道向下流入工具下方的井眼，并防止流体向上流入旁路通道。 旁路端口使流体流入和流过密封环空区域上方和下方的旁通通道和井筒。 打开或关闭封隔器致动旁通阀以控制旁路通道内的井流体的流动。

公开(公告)号：US06439313B1

公开(公告)日：2002-08-27

申请号：US09666724

申请日：2000-09-20

申请人： Hubertus V. Thomeer ,  James Michael Costley ,  Randolph J. Sheffield ,  David M. Eslinger ,  Marc Allcorn ,  Mark C. Oettli

发明人： Hubertus V. Thomeer ,  James Michael Costley ,  Randolph J. Sheffield ,  David M. Eslinger ,  Marc Allcorn ,  Mark C. Oettli

IPC分类号： E21B2900

CPC分类号： E21B43/108 ,  E21B23/02 ,  E21B29/005 ,  E21B29/02 ,  E21B43/103 ,  E21B43/105 ,  E21B43/112 ,  E21B43/114

摘要： A method of machining a workpiece in a subterranean wellbore comprises the steps of: (a) providing a workpiece that comprises (1) a first section that comprises a first material, and (2) a second section that comprises a second material, the second section forming at least one surface of the workpiece; (b) placing the workpiece in a subterranean wellbore that is surrounded by a geologic formation; and (c) machining the workpiece to remove at least part of the second material in the second section, whereby at least one surface of the workpiece is formed into a desired configuration. This method allows, for example, a landing nipple to be installed in a wellbore, and customized locking recesses to be formed in the inner surface of the nipple at a later time.

摘要翻译： 一种在地下井眼中加工工件的方法包括以下步骤：（a）提供一种工件，其包括（1）包括第一材料的第一部分和（2）包括第二材料的第二部分， 形成工件的至少一个表面的截面; （b）将工件放置在被地质构造包围的地下井眼中; 以及（c）加工所述工件以去除所述第二部分中的所述第二材料的至少一部分，由此将所述工件的至少一个表面形成为期望的构造。 这种方法允许例如将着陆接头安装在井眼中，并且在稍后的时间允许在乳头的内表面中形成定制的锁定凹部。

公开(公告)号：US07591321B2

公开(公告)日：2009-09-22

申请号：US11308617

申请日：2006-04-12

申请人： John R. Whitsitt ,  Carlos Araque ,  David M. Eslinger ,  Philippe Gambier ,  Dinesh R. Patel ,  Chad Hardwick ,  Jason K. Jonas ,  Robert Divis ,  Randolph J. Sheffield ,  Bryan L. White ,  Chad Lucas

发明人： John R. Whitsitt ,  Carlos Araque ,  David M. Eslinger ,  Philippe Gambier ,  Dinesh R. Patel ,  Chad Hardwick ,  Jason K. Jonas ,  Robert Divis ,  Randolph J. Sheffield ,  Bryan L. White ,  Chad Lucas

IPC分类号： E21B33/12

CPC分类号： E21B33/1272

摘要： Zonal isolation tools and methods of using same are described. The zonal isolation tools include a wellbore sealing member expandable by fluid pressure to contact a wellbore over an initial contact area, an inflation valve open during expansion of the sealing member to the initial contact area and closed upon the fluid pressure reaching a predetermined setting, a vent between the sealing member and a wellbore annulus adapted to open after the inflation valve is closed, and a compressive load imparted to the sealing member via a linear piston to achieve a sealing point at the leading edge of the sealing member. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

摘要翻译： 描述了区域隔离工具及其使用方法。 区域隔离工具包括可以通过流体压力膨胀以在初始接触区域上接触井眼的井眼密封构件，在密封构件膨胀到初始接触区域期间打开的充气阀并且在流体压力达到预定设定时闭合， 密封构件和适于在充气阀关闭之后打开的井筒环之间的通气，以及通过线性活塞施加到密封构件以在密封构件的前缘处实现密封点的压缩载荷。 该摘要允许搜索者或其他读者快速确定本公开的主题。 它不会用于解释或限制权利要求的范围或含义。 37 CFR 1.72（b）。

公开(公告)号：US20120020777A1

公开(公告)日：2012-01-26

申请号：US13174343

申请日：2011-06-30

申请人： David M. Eslinger

发明人： David M. Eslinger

IPC分类号： F04D1/00 ,  F04D29/28 ,  B23P15/00 ,  F04D29/10

CPC分类号： F04D7/045 ,  F04D1/063 ,  Y10T29/49243

摘要： Durable pumps for abrasives are provided. In one implementation, an example centrifugal pump or pump stage for subsurface operation has a thrust washer located inside the circumference of a close-fitting clearance seal between an impeller shroud and the diffuser. The relocation of the thrust washer allows the clearance seal to protect the thrust washer from abrasives while the thrust washer supports the impeller against the reaction forces of axial fluid flow. In one implementation, the radius or size of a thrust washer or other seal-like feature is reduced in order to increase exposure of the bottom impeller shroud to pressured fluid, thus balancing pressure at the top and bottom of the impeller to decrease friction between the impeller and the thrust washer. Reducing the radius of the thrust washer also reduces surface area of the washer subject to friction and reduces the moment arm of a braking torque on the rotating impeller, thereby reducing power loss in the pump.

摘要翻译： 提供耐磨的磨料泵。 在一个实施方案中，用于地下操作的示例性离心泵或泵级具有位于叶轮护罩和扩散器之间的紧密间隙密封件的圆周内的止推垫圈。 止推垫圈的重新定位允许间隙密封件保护止推垫圈免受磨料磨损，同时推力垫圈支撑叶轮抵抗轴向流体流动的反作用力。 在一个实施方案中，减小了止推垫圈或其他密封件特征的半径或尺寸，以便增加底部叶轮护罩对加压流体的暴露，从而平衡叶轮顶部和底部处的压力，以减小叶轮间的摩擦 叶轮和止推垫圈。 减小推力垫圈的半径也减小了垫圈受摩擦的表面积，并减小了转动叶轮上的制动力矩的力矩臂，从而降低了泵的功率损耗。

公开(公告)号：US5353871A

公开(公告)日：1994-10-11

申请号：US128353

申请日：1993-09-28

申请人： David M. Eslinger ,  Robert M. Sorem

发明人： David M. Eslinger ,  Robert M. Sorem

IPC分类号： E21B33/127

CPC分类号： E21B33/1277

摘要： An inflatable packer apparatus having an inner elastomer sleeve covered by armor such as overlapped, longitudinal slats that extend between upper and lower collars. The end portions of such slats pass through stress rings having outwardly flared nose portions, and thin protector rings mounted inside the nose portions are employed to distribute very localized contact loads form the edge of the slats to the stress rings to prevent the formation of cracks in such rings. The apparatus further includes an elastomeric sleeve member which is expanded into sealing contact with a well bore wall by fluid pressure applied to the inside of the inner elastomeric sleeve member.

摘要翻译： 一种充气封隔器装置，其具有由护甲覆盖的内部弹性体套筒，例如在上部和下部套环之间延伸的重叠的纵向板条。 这种板条的端部通过具有向外扩张的鼻部的应力环，并且使用安装在鼻部内部的薄的保护环来将非常局部的接触载荷从板条的边缘分配到应力环，以防止形成裂缝 这样的戒指。 该装置还包括弹性体套筒构件，其通过施加到内部弹性体套筒构件的内部的流体压力而膨胀成与井筒壁密封接触。