公开(公告)号：US06802372B2

公开(公告)日：2004-10-12

申请号：US10208724

申请日：2002-07-30

申请人： Marcel Budde

发明人： Marcel Budde

IPC分类号： E21B3312

CPC分类号： E21B33/16 ,  E21B34/14

摘要： The present invention relates to an apparatus for dropping a ball into a wellbore. The apparatus is particularly useful for dropping a ball that has a diameter that is larger than the diameter of a bore within a wellbore tool above the apparatus. The ball-releasing apparatus first comprises a tubular body. The tubular body has a bore therethrough that is in fluid communication with the bore of the wellbore tool. A piston is placed within the tubular body. The piston has a top end disposed within the tubular body, and a bottom end disposed below the bore of the wellbore tool. The ball-releasing apparatus further comprises a connector for releasably connecting the piston to the ball. In one arrangement, the ball-releasing apparatus is connected to the bottom of a wiper plug for dropping a ball during a wellbore cementing operation. In one aspect, the ball is dropped by dropping a second ball having a diameter that will pass through the wellbore restriction, and then injecting fluid under pressure against the second smaller ball in order to actuate the releasable connection.

公开(公告)号：US06651748B2

公开(公告)日：2003-11-25

申请号：US10299530

申请日：2002-11-18

申请人： Bobby L. Sullaway ,  Henry E. Rogers

发明人： Bobby L. Sullaway ,  Henry E. Rogers

IPC分类号： E21B3312

CPC分类号： E21B43/10 ,  E21B21/10

摘要： Methods and apparatus for creating a downhole buoyant casing chamber. The buoyant casing chamber may be created after the casing has been at least partially run into the wellbore. Some embodiments also allow circulation of fluid as the casing is being run after the creation of the buoyant chamber. A method of the invention comprises running a length of casing into the well to a first step, forming a buoyant chamber in the casing, filling the chamber with buoyant fluid, either a gas or a light liquid, and running the casing to a second depth greater than the first depth. The apparatus used comprises a length of casing, a floating device disposed in a lower end of the casing and forming a lower boundary of a buoyant chamber, a packer for sealingly engaging the casing in an upper end of the buoyant chamber, and a volume of buoyant fluid to fill the chamber.

公开(公告)号：US06581681B1

公开(公告)日：2003-06-24

申请号：US09598049

申请日：2000-06-21

申请人： Patrick J. Zimmerman ,  Danny W. Wagoner ,  Tyson Stafford ,  David Speller

发明人： Patrick J. Zimmerman ,  Danny W. Wagoner ,  Tyson Stafford ,  David Speller

IPC分类号： E21B3312

CPC分类号： E21B33/129 ,  E21B33/1204 ,  E21B33/1293

摘要： A bridge plug for use in a wellbore to isolate an upper portion of the wellbore from a lower portion. The bridge plug is run into the wellbore on wireline or run-in tubular and then set in the wellbore at a predetermined depth. In one aspect of the invention, the bridge plug includes a cylindrical body having a longitudinal bore therethrough which is sealed to the passage of fluid. A first and second lock ring assemblies are installed on the outer surface of the body and are designed to move in a single direction with respect to the body. A bidirectional slip member which provides resistance to axial forces in two directions and a sealing member is located on the exterior of the body. A sealing member is disposed between the first and second lock ring assemblies and is actuated by movement of the first ring towards the second ring.

摘要翻译： 用于井眼的桥塞，用于将井筒的上部与下部分隔开。 桥塞在有线或管入管道上进入井眼，然后以预定深度设置在井筒中。 在本发明的一个方面中，桥塞包括一个圆筒体，该圆柱体具有通过其的纵向孔，其被密封到流体的通道。 第一和第二锁环组件安装在主体的外表面上并被设计成相对于主体在单个方向上移动。 提供对两个方向的轴向力的阻力的双向滑动构件和密封构件位于主体的外部。 密封构件设置在第一和第二锁定环组件之间，并且通过第一环朝向第二环的运动来致动。

公开(公告)号：US06349771B1

公开(公告)日：2002-02-26

申请号：US09459684

申请日：1999-12-13

申请人： Mike A. Luke

发明人： Mike A. Luke

IPC分类号： E21B3312

CPC分类号： E21B21/10 ,  Y10T137/7785

摘要： The present invention generally provides a system and method for selectively sealing a drill string or other tubular member. In one aspect, a sealing member, such as a valve, allows a certain level of flow of drilling fluids and/or other fluids through one or more flow channels when the valve is open. To close the valve, the flow rate is increased so that a backpressure develops and urges the valve to a closed position. The valve can remain in position in the drill string and alternately open and close depending on the flow rate and/or the pressure drop through the valve. The valve also comprises a removable plug disposed in the valve to provide access with, for example, wireline tools to a region below the valve in a wellbore.

摘要翻译： 本发明总体上提供了用于选择性地密封钻柱或其它管状构件的系统和方法。 在一个方面，当阀门打开时，密封构件（例如阀）允许钻井流体和/或其它流体通过一个或多个流动通道的一定水平的流动。 为了关闭阀门，流量增加，从而产生背压并促使阀门关闭。 阀可以保持在钻柱中的适当位置，并根据流量和/或通过阀的压降而交替地打开和关闭。 阀还包括设置在阀中的可移除塞，以提供例如电缆工具进入到井眼中的阀下方的区域。

公开(公告)号：US06789623B2

公开(公告)日：2004-09-14

申请号：US10102983

申请日：2002-03-21

申请人： Leo E. Hill, Jr. ,  Christian F. Bayne

发明人： Leo E. Hill, Jr. ,  Christian F. Bayne

IPC分类号： E21B3312

CPC分类号： E21B23/02 ,  E21B21/10 ,  E21B43/045

摘要： The apparatus includes a gravel pack assembly comprising a gravel pack body and a crossover tool. The gravel pack body comprises a pressure set packer, one or more production screens and a plurality of axial position indexing lugs. The crossover tool comprises auxiliary flow chambers, packer by-pass channels, a crossover tool check valve and an axial position indexing collet. The gravel pack body and crossover tool are assembled coaxially as a cooperative unit by a threaded joint and the unit is threadably attached to the bottom end of a tool string for selective placement within the wellbore. Set of the packer secures the gravel pack body to the well casing and seals the casing annulus around the gravel pack assembly. A positive fluid pressure is maintained on the wellbore wall in the production zone throughout the gravel packing procedure and in particular, during the packer seal test interval when fluid pressure that is egual to or greater than the normal hydrostatic pressure is maintained on the production zone wall under the gravel pack body packer while greater test pressure above the hydrostatic is imposed in the wellbore annulus above the packer.

摘要翻译： 该装置包括砾石充填组件，其包括砾石充填体和交叉工具。 砾石包装体包括压力封隔器，一个或多个生产筛网和多个轴向位置分度凸缘。 交叉工具包括辅助流动室，封隔器旁通通道，交叉工具止回阀和轴向位置分度夹头。 砾石包装体和交叉工具通过螺纹接头作为协作单元同轴组装，并且该单元螺纹连接到工具串的底端，用于选择性地放置在井筒内。 封隔器组将砾石充填体固定到井套管上，并密封砾石充填组件周围的套管环。 在整个砾石填充程序中，尤其是在封隔器密封测试间隔期间，在生产区内的井筒壁上保持正的流体压力，当在生产区域壁上保持流体压力（例如或大于正常静水压力）时 在砾石包装机体封隔器下方，而在封隔器上方的井眼环境中施加高于静水压力的较大试验压力。

公开(公告)号：US06772844B2

公开(公告)日：2004-08-10

申请号：US10281577

申请日：2002-10-28

申请人： Sam Sun Lloyd ,  James A. Simson ,  George Melenyzer

发明人： Sam Sun Lloyd ,  James A. Simson ,  George Melenyzer

IPC分类号： E21B3312

CPC分类号： E21B33/1212 ,  E21B33/128

摘要： A sealing apparatus for sealing an annulus between a mandrel and an outer tubular. The apparatus comprises a top seal ring and a bottom seal ring separated by a double-ramped cylinder, all mounted on the mandrel and fit within the inner diameter of the outer tubular. The sealing apparatus is placed on the mandrel in running in position. The mandrel and sealing apparatus are then placed downhole in the outer tubular. Once at the desired location, a load is applied to the top seal ring. Once the load reaches a predetermined magnitude, the ramp slides under and expands the bottom seal ring to form a pressure-tight seal with the outer tubular. Additional load placed on the top seal ring causes the top seal ring to slide over the ramp and expand. As the top seal ring expands, the top seal ring forms a pressure-tight seal with the outer tubular.

摘要翻译： 一种用于密封心轴和外管之间的环的密封装置。 该装置包括顶部密封环和由双斜面圆柱体隔开的底部密封环，全部安装在心轴上并且配合在外部管状物的内径内。 将密封装置放置在心轴上运行就位。 然后将心轴和密封装置放置在外管中。 一旦在所需的位置，负载施加到顶部密封环。 一旦载荷达到预定的大小，斜坡在底部密封环下滑动并膨胀，以形成与外管的压力密封。 顶部密封环上的额外载荷使顶部密封环在斜坡上滑动并膨胀。 当顶部密封环膨胀时，顶部密封环与外部管状物形成压力密封。

公开(公告)号：US06745844B2

公开(公告)日：2004-06-08

申请号：US10101684

申请日：2002-03-19

申请人： William David Henderson

发明人： William David Henderson

IPC分类号： E21B3312

CPC分类号： E21B34/08 ,  E21B23/04 ,  E21B41/0085

摘要： Disclosed is a system for using pressure differential between completion fluid in an oil well and produced fluids to power downhole devices, including instruments and actuators. A conduit is provided bypassing a packer which seals a production string to a well casing. A control system, including a flow valve, allows fluid to flow to an electrical generator as needed to charge an electrical storage device. Downhole electrically operated devices, e.g. a temperature sensor and signal transmitter, draw power from the storage device. Alternatively, fluid may also be directed to hydraulically driven actuators to, for example, operate a production fluid control valve.

摘要翻译： 公开了一种在油井中的完井液和产生的流体之间使用压力差的系统，用于为井下装置（包括仪器和致动器）供电。 提供一个管道，绕过密封生产线到井套管的封隔器。 包括流量阀的控制系统允许流体根据需要流向发电机，以对蓄电装置充电。 井下电动装置，例如 一个温度传感器和信号发射器，从存储设备抽取电力。 或者，流体还可以被引导到液压驱动的致动器，以例如操作生产流体控制阀。

公开(公告)号：US06598672B2

公开(公告)日：2003-07-29

申请号：US09974122

申请日：2001-10-09

申请人： Merle L. Bell ,  Daniel P. Bagley ,  Scott C. Schuette

发明人： Merle L. Bell ,  Daniel P. Bagley ,  Scott C. Schuette

IPC分类号： E21B3312

CPC分类号： E21B33/1216

摘要： An anti-extrusion ring for a packer assembly comprises first and second ring portions that are divided into a plurality of discrete arcuate segments. The segments are adapted for movement between a retracted position wherein each segment is in contact with adjacent segments, and an expanded position wherein gaps are formed between the segments. At least one of the ring portions is adapted to face a resilient sealing sleeve of the packer assembly. The first ring portion is circumferentially offset from the second ring portion such that at least one of the first and second ring portions extends across the gaps during movement of the segments toward the expanded position. In this manner, extrusion of the sealing sleeve through the gaps is prevented.

公开(公告)号：US06581682B1

公开(公告)日：2003-06-24

申请号：US09670389

申请日：2000-09-28

申请人： John Howard Parent ,  James G. Pianosi ,  Jamieson Edward Champ

发明人： John Howard Parent ,  James G. Pianosi ,  Jamieson Edward Champ

IPC分类号： E21B3312

CPC分类号： E21B33/1243 ,  E21B33/1277

摘要： The borehole packer is for sealing the annular space around a pipe in a borehole. The packer is pre-manufactured, in-factory. To give the packer the rigidity it needs for handling and transport, the packer is built around an inner sleeve of rigid (metal) mesh. Alternatively, the packer may be built around a cardboard tube, which is discarded as the packer is assembled onto the pipe. When the packing material is bentonite, the bentonite may be compression-moulded into annular-rings, and the packer is built up from the rings.

摘要翻译： 钻孔封隔器用于密封钻孔中管道周围的环形空间。 封隔器是在工厂内预制的。 为了使封隔器具有处理和运输所需的刚性，封隔器围绕刚性（金属）网的内套筒构成。 或者，封隔器可以围绕纸板管构成，当封隔器组装到管上时，其被丢弃。 当包装材料为膨润土时，膨润土可以压塑成环形圈，并且封隔器由环形成。

公开(公告)号：US06484808B2

公开(公告)日：2002-11-26

申请号：US09742070

申请日：2000-12-20

申请人： Donald L. Jones ,  David J. McWhorter ,  Richard M. Ward

发明人： Donald L. Jones ,  David J. McWhorter ,  Richard M. Ward

IPC分类号： E21B3312

CPC分类号： E21B33/076 ,  E21B33/08

摘要： A stripper/packer includes first and second packing elements, which are interchangeable to alleviate inventory concerns. The upper actuating hydraulic piston is the same diameter as the lower piston, which allows the operator to utilize the same amount of pressure to maintain a seal during transition between packing elements. Both packing elements are separately actuated from the lower side allowing the wellbore pressure to assist the seal.