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公开(公告)号：US06843118B2
公开(公告)日：2005-01-18
申请号：US10094544
申请日：2002-03-08
CPC分类号： E21B49/008 , E21B49/082 , E21B49/10
摘要： The present invention is directed to methods and apparatus for using a formation tester to perform a pretest, in a formation having low permeability, by intermittently collecting a portion of fluid at a constant drawdown rate. The drawdown pressure is monitored until a maximum differential pressure is reached between the formation and the tester. Then the piston is stopped until the differential pressure increases to a set value, at which time the piston is restarted. The controlled intermittent operation of the piston continues until a set pretest volume is reached. The modulated drawdown allows for an accurate collection of pressure versus time data that is then used to calculate the formation pressure and permeability. The present invention also finds applicability in logging-while-drilling and measurement-while drilling applications where power conservation is critical.
摘要翻译： 本发明涉及使用地层测试仪在具有低渗透性的地层中以恒定的降低速率间歇地收集一部分流体来进行预测试的方法和装置。 监测压降压力，直到地层和测试仪之间达到最大压差。 然后，活塞停止直到差压增加到设定值，此时活塞重新启动。 活塞的受控间歇操作继续，直到达到设定的预测试体积。 调制下降允许精确收集压力与时间数据，然后用于计算地层压力和渗透率。 本发明还可以在钻井和测量中记录应用，同时在节能至关重要的钻井应用中。
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公开(公告)号：US07204309B2
公开(公告)日：2007-04-17
申请号：US10440835
申请日：2003-05-19
申请人： Pedro R. Segura , Mark A. Sitka , Gregory N. Gilbert , Preston N. Weintraub , Tony T. Vu , John R. Hardin, Jr. , Kristopher V. Sherrill , David M. Welshans , James E. Stone
发明人： Pedro R. Segura , Mark A. Sitka , Gregory N. Gilbert , Preston N. Weintraub , Tony T. Vu , John R. Hardin, Jr. , Kristopher V. Sherrill , David M. Welshans , James E. Stone
IPC分类号： E21B49/10
摘要： A formation testing tool is described herein, including a formation probe assembly having an extendable sampling probe surrounded by a cylindrical sleeve. The sleeve is configured to engage a metal skirt having an elastomeric seal pad coupled thereto. The skirt and seal are configured to be field replaceable. The elastomeric pad has a non-planar outer surface which engages a borehole wall in preparation for formation testing. The seal pad may be donut-shaped, having an aperture through the middle of the seal pad. The seal pad and its surface may include numerous different embodiments, including having a curved profile. The seal pad may also include numerous different embodiments of means for coupling the seal pad to the metal skirt. The formation testing tool also includes formation probe assembly anti-rotation means, a deviated non-circular flowbore, and at least one closed hydraulic fluid chamber for balancing fluid pressures.
摘要翻译： 本文描述了地层测试工具，包括地层探测器组件，其具有由圆柱形套筒包围的可延伸取样探针。 套筒构造成接合具有与其耦合的弹性密封垫的金属裙部。 裙子和密封件被配置为现场可更换的。 弹性体垫具有非平面的外表面，其与钻孔壁接合以准备地层测试。 密封垫可以是环形，其具有穿过密封垫的中间的孔。 密封垫及其表面可以包括许多不同的实施例，包括具有弯曲轮廓。 密封垫还可以包括用于将密封垫连接到金属裙部的装置的许多不同实施例。 地层测试工具还包括地层探测器组件防旋转装置，偏离的非圆形流孔以及用于平衡流体压力的至少一个封闭的液压流体室。
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公开(公告)号：US20110259600A1
公开(公告)日：2011-10-27
申请号：US13092104
申请日：2011-04-21
IPC分类号： E21B34/10
摘要： An apparatus and method for the actuation of down-hole tools are provided. The down-hole tool that may be actuated and controlled using the apparatus and method may include a reamer, an adjustable gauge stabilizer, vertical steerable tools, rotary steerable tools, by-pass valves, packers, whipstocks, down hole valves, latch or release mechanisms and/or anchor mechanisms.
摘要翻译： 提供了用于致动井下工具的装置和方法。 可以使用该设备和方法致动和控制的井下工具可以包括铰刀，可调量规稳定器，垂直转向工具，旋转可转向工具，旁通阀，封隔器，造斜器，井下阀，闩锁或释放 机制和/或锚定机制。
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公开(公告)号：US20110265584A1
公开(公告)日：2011-11-03
申请号：US13098326
申请日：2011-04-29
申请人： Pedro R. Segura , Rene M. Rey
发明人： Pedro R. Segura , Rene M. Rey
IPC分类号： G01D21/00
CPC分类号： G01V11/005 , E21B47/01 , E21B47/024 , G01V1/52 , G01V2001/526
摘要： A downhole tool measurement device mounting system and method and provided.
摘要翻译： 一种井下工具测量装置的安装系统及方法。
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公开(公告)号：US08684093B2
公开(公告)日：2014-04-01
申请号：US13092104
申请日：2011-04-21
IPC分类号： E21B34/10
摘要： An apparatus and method for the actuation of down-hole tools are provided. The down-hole tool that may be actuated and controlled using the apparatus and method may include a reamer, an adjustable gauge stabilizer, vertical steerable tools, rotary steerable tools, by-pass valves, packers, whipstocks, down hole valves, latch or release mechanisms and/or anchor mechanisms.
摘要翻译： 提供了用于致动井下工具的装置和方法。 可以使用该设备和方法致动和控制的井下工具可以包括铰刀，可调量规稳定器，垂直转向工具，旋转可转向工具，旁通阀，封隔器，造斜器，井下阀，闩锁或释放 机制和/或锚定机制。
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