公开(公告)号：US06315050B2

公开(公告)日：2001-11-13

申请号：US09746531

申请日：2000-12-21

申请人： Vladimir Vaynshteyn ,  James D. Hendrickson ,  Jim B. Benton ,  Raghu Madhavan ,  Mitchell G. Willcox ,  Dinesh R. Patel

发明人： Vladimir Vaynshteyn ,  James D. Hendrickson ,  Jim B. Benton ,  Raghu Madhavan ,  Mitchell G. Willcox ,  Dinesh R. Patel

IPC分类号： E21B2304

CPC分类号： E21B43/116 ,  E21B33/126 ,  E21B33/1295 ,  E21B34/063

摘要： A packer for use inside a casing of a subterranean well includes a resilient element, a housing and a rupture disc. The resilient element is adapted to seal off an annulus of the well when compressed, and the housing is adapted to compress the resilient element in response to a pressure exerted by fluid of the annulus of a piston head of the housing. The housing includes a port for establishing fluid communication with the annulus. The rupture disc is adapted to prevent the fluid in the annulus from entering the port and contacting the piston head until the pressure exerted by the fluid exceeds a predefined threshold and ruptures the rupture disc.

公开(公告)号：US06186227B1

公开(公告)日：2001-02-13

申请号：US09295915

申请日：1999-04-21

申请人： Vladimir Vaynshteyn ,  James D. Hendrickson ,  Jim B. Benton ,  Raghu Madhavan ,  Mitchell G. Willcox ,  Dinesh R. Patel

发明人： Vladimir Vaynshteyn ,  James D. Hendrickson ,  Jim B. Benton ,  Raghu Madhavan ,  Mitchell G. Willcox ,  Dinesh R. Patel

IPC分类号： E21B2304

CPC分类号： E21B43/116 ,  E21B33/126 ,  E21B33/1295 ,  E21B34/063

摘要： A packer for use inside a casing of a subterranean well includes a resilient element, a housing and a rupture disc. The resilient element is adapted to seal off an annulus of the well when compressed, and the housing is adapted to compress the resilient element in response to a pressure exerted by fluid of the annulus of a piston head of the housing. The housing includes a port for establishing fluid communication with the annulus. The rupture disc is adapted to prevent the fluid in the annulus from entering the port and contacting the piston head until the pressure exerted by the fluid exceeds a predefined threshold and ruptures the rupture disc.

公开(公告)号：US09366092B2

公开(公告)日：2016-06-14

申请号：US11995027

申请日：2006-08-03

申请人： Remi Hutin ,  David Santoso ,  Lise Hvatum ,  Christopher P. Reed ,  Raghu Madhavan ,  Jean-Marc Follini

发明人： Remi Hutin ,  David Santoso ,  Lise Hvatum ,  Christopher P. Reed ,  Raghu Madhavan ,  Jean-Marc Follini

IPC分类号： E21B47/01 ,  E21B47/12 ,  E21B17/00 ,  E21B17/02

CPC分类号： E21B17/003 ,  E21B17/028 ,  E21B47/12 ,  E21B47/122

摘要： A system for use in a drilling operation that includes uphole electronic equipment and a drill string suspended in an earth borehole, a section of wired drill pipe that is part of a communication link between a downhole tool and the uphole electronic equipment, an interface for communicating between the section of wired drill pipe and a communication source/destination. The system includes a housing having a generally cylindrical outer shape which has a passage there through. The housing has a WDP end connectable to the section of wired drill pipe and a further end connectable to the communication source/destination. The system also includes a WDP circuit module disposed within the housing. The WDP circuit module electrically coupleable with the wired drill pipe section. The system includes a further circuit module, disposed within the housing, which is electrically coupled with the WDP circuit module and electrically coupleable with the communication source/destination.

摘要翻译： 一种用于钻井操作的系统，包括井上电子设备和悬挂在地球钻孔中的钻柱，作为井下工具与井上电子设备之间的通信链路的一部分的有线钻杆的一部分，用于通信的接口 在有线钻杆的一段和通信源/目的地之间。 该系统包括具有大致圆柱形的外部形状的壳体，其具有穿过其的通道。 外壳具有可连接到有线钻杆部分的WDP端，以及可连接到通信源/目的地的另一端。 该系统还包括设置在壳体内的WDP电路模块。 WDP电路模块与有线钻杆部分电连接。 该系统包括设置在壳体内的另一电路模块，其与WDP电路模块电耦合并且可与通信源/目的地电耦合。

公开(公告)号：US09157313B2

公开(公告)日：2015-10-13

申请号：US13486328

申请日：2012-06-01

申请人： Raghu Madhavan ,  Mark Sherman

发明人： Raghu Madhavan ,  Mark Sherman

IPC分类号： E21B47/00 ,  E21B17/02

CPC分类号： E21B47/0006 ,  E21B17/028

摘要： A drilling system comprises a drillstring including a dill bit, a bottomhole assembly coupled to the drill bit, and a plurality of interconnected tubular members coupled to the bottomhole assembly. A first tubular member includes a communication link having a first annular inductive coupler element disposed in an annular recess in a first end, a second annular inductive coupler element disposed in an annular recess in a second end, and a cable coupling the first annular inductive coupler element to the second annular inductive coupler element. In addition, the drilling system comprises a first signal level determination unit disposed in the drillstring and configured to determine a level of a first signal communicated from the second inductive coupler element. Further, the drilling system comprises an axial load determination unit configured to determine an axial load at the first signal level determination unit based on the level of the first signal.

摘要翻译： 钻井系统包括钻柱，钻柱包括钻头，联接到钻头的井底组件和联接到井底组件的多个互连的管状构件。 第一管状构件包括通信连接件，该连通连杆具有设置在第一端的环形凹部中的第一环形感应耦合器元件，设置在第二端的环形凹部中的第二环形感应耦合器元件，以及将第一环形感应耦合器 元件连接到第二环形感应耦合元件。 此外，钻井系统包括设置在钻柱中并被配置为确定从第二电感耦合器元件传递的第一信号的电平的第一信号电平确定单元。 此外，钻井系统包括轴向负荷确定单元，其被配置为基于第一信号的电平来确定第一信号电平确定单元处的轴向负载。

公开(公告)号：US20130319768A1

公开(公告)日：2013-12-05

申请号：US13486328

申请日：2012-06-01

申请人： Raghu Madhavan ,  Mark Sherman

发明人： Raghu Madhavan ,  Mark Sherman

IPC分类号： E21B47/00

CPC分类号： E21B47/0006 ,  E21B17/028

摘要： A drilling system comprises a drillstring including a dill bit, a bottomhole assembly coupled to the drill bit, and a plurality of interconnected tubular members coupled to the bottomhole assembly. A first tubular member includes a communication link having a first annular inductive coupler element disposed in an annular recess in a first end, a second annular inductive coupler element disposed in an annular recess in a second end, and a cable coupling the first annular inductive coupler element to the second annular inductive coupler element. In addition, the drilling system comprises a first signal level determination unit disposed in the drillstring and configured to determine a level of a first signal communicated from the second inductive coupler element. Further, the drilling system comprises an axial load determination unit configured to determine an axial load at the first signal level determination unit based on the level of the first signal.

摘要翻译： 钻井系统包括钻柱，钻柱包括钻头，联接到钻头的井底组件和联接到井底组件的多个互连的管状构件。 第一管状构件包括通信连接件，该连通连杆具有设置在第一端的环形凹部中的第一环形感应耦合器元件，设置在第二端的环形凹部中的第二环形感应耦合器元件，以及将第一环形感应耦合器 元件连接到第二环形感应耦合元件。 此外，钻井系统包括设置在钻柱中并被配置为确定从第二电感耦合器元件传递的第一信号的电平的第一信号电平确定单元。 此外，钻井系统包括轴向负荷确定单元，其被配置为基于第一信号的电平来确定第一信号电平确定单元处的轴向负载。

公开(公告)号：US08403332B2

公开(公告)日：2013-03-26

申请号：US12647943

申请日：2009-12-28

申请人： Toru Noguchi ,  Hiroyuki Ueki ,  Shigeki Inukai ,  Masaei Ito ,  Raghu Madhavan ,  Morinobu Endo ,  Satoshi Iinou

发明人： Toru Noguchi ,  Hiroyuki Ueki ,  Shigeki Inukai ,  Masaei Ito ,  Raghu Madhavan ,  Morinobu Endo ,  Satoshi Iinou

IPC分类号： E21B33/10

CPC分类号： E21B33/10 ,  B82Y30/00 ,  C08J5/005 ,  C08J2327/18 ,  C09K3/1009 ,  F01C1/107 ,  F01C13/00 ,  F01C19/005 ,  F01C19/125 ,  F04C2/1075 ,  F04C13/008

摘要： The seal member includes a tetrafluoroethylene-propylene copolymer (FEPM) and carbon nanofibers. The seal member has a number of cycles to fracture of 10 or more when subjected to a tension fatigue test at a temperature of 150° C., a maximum tensile stress of 2 N/mm, and a frequency of 1 Hz. The seal member exhibits excellent heat resistance and abrasion resistance.

摘要翻译： 密封件包括四氟乙烯 - 丙烯共聚物（FEPM）和碳纳米纤维。 当在150℃的温度，2N / mm的最大拉伸应力和1Hz的频率下进行拉伸疲劳试验时，密封构件具有10个以上的断裂的循环次数。 密封件表现出优异的耐热性和耐磨性。

公开(公告)号：US06866306B2

公开(公告)日：2005-03-15

申请号：US09881333

申请日：2001-06-14

申请人： Bruce W. Boyle ,  Raghu Madhavan ,  Jacques Jundt

发明人： Bruce W. Boyle ,  Raghu Madhavan ,  Jacques Jundt

IPC分类号： E21B17/02 ,  E21B47/12 ,  F16L15/08 ,  F16L25/01 ,  F16L25/00

CPC分类号： E21B47/122 ,  E21B17/028 ,  F16L15/08 ,  F16L25/01 ,  Y10S439/95

摘要： A first flux-loop inductive coupler element electrically couples with a second flux-loop inductive coupler element. The first flux-loop inductive coupler element comprises a first ring-like core having high magnetic permeability and a conical-section annular first face transverse to the plane of the first core. The first face has a first annular groove separating a first conical-section larger-diameter face and a first conical-section smaller-diameter face. A first coil is wound within the annular groove. The first and second cores form a low-reluctance closed magnetic path around the first coil and a second coil of the second flux-loop inductive coupler element.A first current-loop inductive coupler element electrically couples with a second current-loop inductive coupler element. The first current-loop inductive coupler element has a first high-conductivity, low-permeability shaped belt of a first end of a first pipe joint, a first ring-like core located at the first end, and a first electrically conductive coil wound about the first ring-like core. The first high-conductivity, low-permeability shaped belt partially encloses the first coil. It is shaped to cooperate with the second high-conductivity, low-permeability shaped belt of an adjacent second pipe joint having a second electrically conductive coil and a second high-conductivity, low-permeability shaped belt to create a closed toroidal electrical conducting path. The closed toroidal electrical conducting path encloses the first coil and the second coil when the first and second pipe joints are mated.

摘要翻译： 第一磁通回路感应耦合器元件与第二磁通回路感应耦合元件电耦合。 第一磁通回路感应耦合器元件包括具有高导磁率的第一环状磁芯和横向于第一磁芯平面的圆锥形环形第一面。 第一面具有分隔第一锥形部分大直径面和第一锥形部分较小直径面的第一环形槽。 第一线圈缠绕在环形槽内。 第一和第二磁芯形成围绕第一线圈的低磁阻闭合磁路和第二磁通回路感应耦合器元件的第二线圈。第一电流回路感应耦合器元件与第二电流回路感应耦合元件 。 第一电流回路感应耦合器元件具有第一管接头的第一端，位于第一端的第一环状磁芯和围绕第一管状接头卷绕的第一导电线圈的第一高导电率，低磁导率形状的带 第一个环状核心。 第一高导电率，低磁导率形状的带部分地包围第一线圈。 它被成形为与具有第二导电线圈和第二高导电率，低导磁性形状的带的相邻的第二管接头的第二高导电率，低磁导率形状的带配合以产生闭合的环形导电路径。 当第一和第二管接头配合时，封闭的环形导电通路包围第一线圈和第二线圈。

公开(公告)号：US08322196B2

公开(公告)日：2012-12-04

申请号：US12534151

申请日：2009-08-02

申请人： Raghu Madhavan ,  Yu Hatori ,  Mami Nishida ,  Sophie Nazik Godefroy ,  Michael Stangeland ,  Go Fujisawa

发明人： Raghu Madhavan ,  Yu Hatori ,  Mami Nishida ,  Sophie Nazik Godefroy ,  Michael Stangeland ,  Go Fujisawa

IPC分类号： G01N11/10

CPC分类号： E21B47/10 ,  G01N11/16 ,  G01N33/2823

摘要： Vibrating wire viscometers are described. Some example vibrating wire viscometer housings include a flowline through the housing to expose a first wire to a downhole fluid, a cavity in the housing to hold a magnet and to conduct one or more additional wires from the flowline to a signal generator, first and second electrically conductive posts mechanically coupled to the housing to hold the first wire in tension within the flowline, and a seal mechanically coupled to the housing to prevent access to the magnet by the downhole fluid.

摘要翻译： 描述了振动丝粘度计。 一些示例性振动丝粘度计壳体包括通过壳体的流线，以将第一线暴露于井下流体，壳体中的空腔以保持磁体并且将一条或多条额外的导线从流线引导到信号发生器，第一和第二 导电柱机械联接到壳体以将第一线材保持在流线内的张力，以及机械地联接到壳体的密封件，以防止井下流体进入磁体。

公开(公告)号：US20070063865A1

公开(公告)日：2007-03-22

申请号：US11228111

申请日：2005-09-16

申请人： Raghu Madhavan ,  David Santoso ,  Kanu Chadha ,  Lise Hvatum

发明人： Raghu Madhavan ,  David Santoso ,  Kanu Chadha ,  Lise Hvatum

IPC分类号： G01V3/00

CPC分类号： E21B47/12 ,  E21B47/122

摘要： A telemetry kit for passing signals between a surface control unit and a downhole tool via a wired drill pipe telemetry system is provided. The kit has a first terminal operatively connectable to the wired drill pipe telemetry system for communication therewith, a second terminal operatively connectable to one of the surface control unit and the downhole tool for communication therewith and at least one transmission element operatively connecting the first terminal to the second terminal. The telemetry kit is positionable such that the telemetry kit traverses at least a portion of the downhole tool and/or the wired drill pipe telemetry system whereby the signals bypass the portion thereof.

摘要翻译： 提供了一种用于通过有线钻杆遥测系统在表面控制单元和井下工具之间传递信号的遥测套件。 所述套件具有可操作地连接到所述有线钻杆遥测系统用于与其通信的第一端子，可操作地连接到所述表面控制单元和所述井下工具中的一个用于与其通信的第二端子，以及至少一个传动元件，其将所述第一端子与 第二个终端。 遥测套件可定位成使得遥测套件穿过井下工具和/或有线钻杆遥测系统的至少一部分，由此信号绕过其部分。

公开(公告)号：US20070030167A1

公开(公告)日：2007-02-08

申请号：US11498847

申请日：2006-08-03

申请人： Qiming Li ,  David Santoso ,  Mark Sherman ,  Raghu Madhavan ,  Randall LeBlanc ,  John Thomas ,  Joseph Montero

发明人： Qiming Li ,  David Santoso ,  Mark Sherman ,  Raghu Madhavan ,  Randall LeBlanc ,  John Thomas ,  Joseph Montero

IPC分类号： G01V3/00

CPC分类号： G01V11/002 ,  E21B17/003 ,  E21B17/028 ,  E21B47/12 ,  E21B47/122

摘要： A system for bidirectional communication between the downhole equipment and a processor subsystem at the earth's surface, including: a section of wired drill pipes comprising at least the upper portion of a string of drill pipes, and forming at least a portion of a bidirectional communication link between downhole equipment and the top of the string of drill pipes; a drive string portion of the drill string, mechanically coupleable with the topmost wired drill pipe; a drive mechanism mechanically coupleable with said drive string portion, for rotating the drill string; a first wireless transceiver subsystem mounted on the drive string portion of the drill string, for rotation in conjunction with the drill string; a cable, electrically coupled between the top joint of the topmost wired drill pipe and the first transceiver subsystem; and a second wireless transceiver subsystem coupled with the uphole processor subsystem, the second wireless transceiver subsystem communicating bidirectionally with the first wireless transceiver subsystem.

摘要翻译： 一种用于井下设备与地球表面处理器子系统之间的双向通信的系统，包括：至少包括钻杆串的上部的有线钻杆的一部分，并且形成双向通信链路的至少一部分 井下设备与钻杆之间的顶部; 钻柱的驱动弦部分，与最上面的有线钻杆机械地联接; 驱动机构，其与所述驱动串部分机械地联接，用于旋转所述钻柱; 安装在钻柱的驱动串部分上的第一无线收发器子系统，用于与钻柱一起旋转; 电缆，电耦合在最上面的有线钻杆的顶部接头和第一收发器子系统之间; 以及与所述井上处理器子系统耦合的第二无线收发器子系统，所述第二无线收发器子系统与所述第一无线收发器子系统双向通信。