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公开(公告)号：US4757873A
公开(公告)日：1988-07-19
申请号：US934673
申请日：1986-11-25
CPC分类号： E21B17/1021 , G01V11/005 , Y10S367/911
摘要： The present invention is directed to an apparatus useful in downhole logging tools used in the oil and gas industry. The present invention is particularly directed to an acoustic logging tool including improved, articulated transducer pad assemblies for providing improved transducer contact with the wall of a borehole or the inside wall of casing cemented in the borehole. The apparatus of the present invention provides a plurality of articulated transducer pad assemblies disposed about the circumference of an acoustic logging tool in a plurality of separately movable and adjustable groups. These assemblies each include a plurality of articulated joints permitting limited independent movement of each assembly. The assemblies are spring biased at each end into a deployed configuration to maintain good contact with the wall of the borehole or casing. A drive motor overcomes the biasing springs to retract the assemblies to provide a compact tool for tripping to the location of interest within the borehole.
摘要翻译： 本发明涉及一种可用于石油和天然气工业中使用的井下测井工具的装置。 本发明特别涉及一种声学测井工具，其包括改进的关节式换能器垫组件，用于提供改进的换能器与钻孔壁或井壁内壁的接触。 本发明的装置提供了多个关节式换能器垫组件，其围绕声学测井工具的圆周设置在多个可分离且可调节的组中。 这些组件各自包括多个铰接接头，允许每个组件的有限的独立运动。 组件在每一端被弹簧偏置成展开构型以保持与钻孔或套管的壁的良好接触。 驱动电动机克服偏压弹簧以缩回组件以提供用于绊倒到钻孔内的感兴趣位置的紧凑工具。
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公开(公告)号：US4928031A
公开(公告)日：1990-05-22
申请号：US934672
申请日：1986-11-25
CPC分类号： G01V1/16 , E21B47/011 , G01N29/24
摘要： The present invention is directed to a device which simply and efficiently compensates for changes in the volume of a fluid trapped in a fluid-filled cavity between two relatively immovable housings and an elastomeric seal ring. The present invention is particularly useful in an acoustic transducer pad assembly designed for installation on logging tools used in deep boreholes in the oil and gas industry where high temperatures and pressures are experienced at downhole locations. In a presently preferred embodiment, the device comprises a transducer unit housing fixedly secured to a metal wear pad housing with an elastomeric seal disposed therebetween to define a fluid-filled cavity between adjacent portions of the housings and the seal. The seal is disposed in a groove of sufficient size to permit the required lateral expansion and contraction by deformation or extrusion of the seal in order to compensate for the expected changes in the volume of the fluid-filled cavity.
摘要翻译： 本发明涉及一种装置，其简单有效地补偿在两个相对不可移动的壳体和弹性体密封环之间在流体填充空腔中捕获的流体的体积变化。 本发明在设计用于安装在石油和天然气工业中用于深井钻井的测井工具上的声学换能器垫组件中特别有用，在井下位置处经历高温和高压。 在目前优选的实施例中，该装置包括固定地固定到金属耐磨垫壳体上的换能器单元壳体，弹性密封件设置在它们之间，以在壳体和密封件的相邻部分之间限定流体填充空腔。 密封件设置在足够尺寸的凹槽中，以通过密封件的变形或挤压来允许所需的横向膨胀和收缩，以便补偿流体填充空腔体积的预期变化。
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公开(公告)号：US06899173B2
公开(公告)日：2005-05-31
申请号：US10231777
申请日：2002-08-28
摘要： A through tubing retrievable whipstock and installation method is disclosed. In the preferred embodiment, a plurality of anchor links pivot at one end and have wickers on an opposed rounded end. The links are configured to deliver an optimum contact angle with respect to the longitudinal axis of the whipstock in a variety of casing sizes and weights. A lock ring system holds the set position and the upper end is hinged and biased to stay out of the way of the mill or mills and yet be easy to engage by a retrieving tool.
摘要翻译： 公开了一种通过管道回收的造斜器和安装方法。 在优选实施例中，多个锚固连杆在一端枢转并且在相对的圆形端部上具有门具。 连杆构造成以各种套管尺寸和重量相对于造斜器的纵向轴线递送最佳接触角。 锁环系统保持设定位置，并且上端被铰接和偏置以保持脱离磨机或磨机的方式，并且易于通过检索工具接合。
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公开(公告)号：US06325145B1
公开(公告)日：2001-12-04
申请号：US09595590
申请日：2000-06-15
申请人： Roy E. Swanson, Jr.
发明人： Roy E. Swanson, Jr.
IPC分类号： E21B3100
CPC分类号： E21B17/00 , E21B21/08 , E21B31/113
摘要： A downhole in-line tubular accumulator for the attenuation of pressure pulses generated by operation of a downhole vibratory apparatus in an oil or gas well. An inner tube is positioned within a hollow housing, with the inner tube being attached to the housing at their upper ends. The lower end of the inner tube is unattached within the housing, thereby establishing an annular upper cavity between the inner tube and the housing, and an open lower cavity in the housing below the unattached lower end of the inner tube. The attenuator is run into the well on a work string. Pressure pulses traveling through the fluid column in the work string are attenuated by entrapped air in the annular upper cavity in the housing.
摘要翻译： 一种井下直列管式蓄能器，用于减少在油井或气井中操作井下振动装置产生的压力脉冲。 内管定位在中空壳体内，内管在其上端附接到壳体。 内管的下端未连接在壳体内，从而在内管和壳体之间建立一个环形的上部空腔，以及在内管未连接的下端下方的外壳中的开放的下腔。 衰减器在工作串上进入井。 穿过工作串中的流体柱的压力脉冲通过外壳中的环形上腔中的夹带空气而衰减。
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公开(公告)号：US4190107A
公开(公告)日：1980-02-26
申请号：US936851
申请日：1978-08-25
IPC分类号： E21B23/06 , E21B33/1295 , E21B23/04 , E21B17/02
CPC分类号： E21B23/06 , E21B33/1295
摘要： Well bore apparatus is installed in a well casing on a tubular string having a packer anchored in and forming a seal within the casing. In the tubing string above the packer is a safety valve structure held open by the pressure of fluid supplied through control fluid tubing extending to the top of the well between the exterior of the tubing string and the casing. A long tubing seal structure has a lock releasable by the pressure of fluid supplied through the tubing string. The tubing seal structure is released to enable the tubing string to move freely in either direction, in response to pressure and/or temperature changes, whereby tension and compression reversals are eliminated. The tubing string above the sealing receptacle can be pulled from above the packer and other downhole structures. The hydraulic release is operable by fluid pressure to release the receptacle for longitudinal movement relative to a long sealing slick joint.
摘要翻译： 井眼装置安装在具有封隔器的管状管柱的井套管中，封隔器锚固并在壳体内形成密封。 在封隔器上方的管柱中，安全阀结构由通过控制流体管道提供的流体的压力保持打开，该流体管延伸到管柱的外部和套管之间的井的顶部。 长管道密封结构具有通过通过管柱提供的流体的压力可释放的锁。 油管密封结构被释放以使油管柱能够响应于压力和/或温度变化在任一方向上自由移动，从而消除了张力和压缩反转。 密封容器上方的管柱可以从封隔器和其他井下结构的上方拉出。 液压释放可通过流体压力操作以释放容器以相对于长密封的光滑接头进行纵向移动。
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