公开(公告)号：US20100154531A1

公开(公告)日：2010-06-24

申请号：US12339229

申请日：2008-12-19

申请人： Wei Han ,  Tsili Wang

发明人： Wei Han ,  Tsili Wang

IPC分类号： E21B44/00

CPC分类号： E21B47/082

摘要： A downhole tool includes circumferentially spaced and/or angled transducer elements. In one embodiment a standoff sensor has at least three piezoelectric transducer elements, at least a first element of which is configured to both transmit and receive ultrasonic energy. At least second and third of the elements are configured to receive ultrasonic energy transmitted by the first element in pitch catch mode. An electronic controller is configured to calculate a standoff distance from the ultrasonic waveforms received at the first, the second, and the third piezoelectric transducer elements. The controller may further be configured to estimate the eccentricity of a measurement tool in the borehole. Exemplary embodiments of the invention may improve borehole coverage and data quality and reliability in LWD caliper logging. In particular, the invention may advantageously reduce or even eliminate blind spots when logging eccentric bore holes.

摘要翻译： 井下工具包括周向间隔开和/或成角度的换能器元件。 在一个实施例中，间隔传感器具有至少三个压电换能器元件，其至少第一元件被配置为发送和接收超声波能量。 至少第二和第三元件构造成在俯仰模式下接收由第一元件传递的超声波能量。 电子控制器被配置为计算从在第一，第二和第三压电换能器元件处接收的超声波波形的间隔距离。 控制器还可以被配置为估计钻孔中的测量工具的偏心度。 本发明的示例性实施例可以改进LWD卡尺测井中的井眼覆盖和数据质量和可靠性。 特别地，当记录偏心孔时，本发明可有利地减少甚至消除盲点。

公开(公告)号：US20100126770A1

公开(公告)日：2010-05-27

申请号：US12276485

申请日：2008-11-24

申请人： Junichi Sugiura

发明人： Junichi Sugiura

IPC分类号： E21B7/04 ,  E21B44/00 ,  G01V5/12 ,  G06F19/00

CPC分类号： E21B17/1014 ,  E21B7/062 ,  E21B47/02

摘要： A steering tool configured for making azimuthal and non-azimuthal formation evaluation measurements is disclosed. In one embodiment a rotary steerable tool includes at least one formation evaluation sensor deployed in the steering tool housing. The steering tool may include, for example, first and second circumferentially opposed formation evaluation sensors or first, second, and third formation evaluation sensors, each of which is radially offset and circumferentially aligned with a corresponding one of the steering tool blades. The invention further includes methods for geosteering in which a rotation rate of the steering tool housing in the borehole (and therefore the rotation rate of the formation evaluation sensors) is controlled. Steering decisions may be made utilizing the formation evaluation measurements and/or derived borehole images.

摘要翻译： 公开了一种配置用于进行方位角和非方位角地层评估测量的转向工具。 在一个实施例中，旋转可转向工具包括部署在转向工具壳体中的至少一个地层评估传感器。 转向工具可以包括例如第一和第二周向相对的地层评估传感器或第一，第二和第三地层评估传感器，每个传感器径向偏移并与对应的一个转向工具叶片周向对准。 本发明还包括用于地理导向的方法，其中转向工具壳体在钻孔中的旋转速率（因此地层评估传感器的旋转速率）被控制。 可以使用地层评估测量和/或导出的钻孔图像来进行转向决定。

公开(公告)号：US07489591B2

公开(公告)日：2009-02-10

申请号：US11417386

申请日：2006-05-04

申请人： Edward S. Mumby

发明人： Edward S. Mumby

IPC分类号： E21B47/18

CPC分类号： E21B47/18

摘要： An apparatus for detecting mud pulse telemetry signals includes a differential transducer. In various exemplary embodiments, a high-pressure side of the differential transducer is in fluid communication with either drilling fluid in a standpipe (which is in fluid communication with drilling fluid in the borehole) or a gas chamber of a pulsation dampener. Exemplary embodiments typically further include a pressure delay module in fluid communication with the low-pressure side of the differential transducer and the gas chamber of the pulsation dampener. The invention is intended to advantageously improve the reliability and bandwidth of mud pulse telemetry communications in oilfield drilling applications.

摘要翻译： 用于检测泥浆脉冲遥测信号的装置包括差分换能器。 在各种示例性实施例中，差动换能器的高压侧与立管（与钻孔中的钻井流体流体连通）或脉动阻尼器的气室中的钻井流体流体连通。 示例性实施例通常还包括与差动换能器的低压侧和脉动阻尼器的气室流体连通的压力延迟模块。 本发明旨在有利地提高油田钻井应用中泥浆脉冲遥测通信的可靠性和带宽。

公开(公告)号：US07482812B2

公开(公告)日：2009-01-27

申请号：US11405378

申请日：2006-04-17

申请人： Robert A Moore

发明人： Robert A Moore

IPC分类号： G01V3/00 ,  H01Q1/04

CPC分类号： G01V3/30

摘要： A loop antenna useful, for example, in investigation of earth formations. Embodiments of the invention provide a loop antenna circuit comprising a loop antenna disposed to generate, in response to an electromagnetic wave, a pick-up signal on an output node. Loop antenna circuit further includes a tuning network coupled to the loop antenna. The tuning network is disposed to provide simultaneous tuning at a plurality of interrogation frequencies. Further embodiments include a preamplifier circuit coupled to the loop antenna. The preamplifier circuit is disposed to receive the pick-up signal on an input node and provide a high impedance load to the loop antenna for a first of the plurality of interrogation frequencies to reduce the secondary radiation from the loop antenna to below a predetermined value at the said first interrogation frequency.

摘要翻译： 一个环形天线可用于例如研究地层。 本发明的实施例提供了一种环形天线电路，其包括设置成响应于电磁波在输出节点上产生拾取信号的环形天线。 环路天线电路还包括耦合到环形天线的调谐网络。 调谐网络被设置成提供多个询问频率的同时调谐。 另外的实施例包括耦合到环形天线的前置放大器电路。 前置放大器电路设置成在输入节点上接收拾取信号，并且为多个询问频率中的第一个询问频率向环形天线提供高阻抗负载，以将来自环形天线的二次辐射减小到低于预定值的预定值 所述第一询问频率。

公开(公告)号：US20070289373A1

公开(公告)日：2007-12-20

申请号：US11454019

申请日：2006-06-15

申请人： Junichi Sugiura

发明人： Junichi Sugiura

IPC分类号： E21B47/00

CPC分类号： E21B47/00 ,  E21B7/062 ,  E21B44/00 ,  E21B45/00 ,  E21B47/024 ,  E21B47/12

摘要： Aspects of this invention include a rotary steerable steering tool having a sensor arrangement for measuring downhole dynamic conditions. Rotary steerable tools in accordance with this invention include a rotation rate measurement device disposed to measure a difference in rotation rates between a drive shaft and an outer, substantially non-rotating housing. A controller is configured to determine a stick/slip parameter from the rotation rate measurements. Exemplary embodiments may also optionally include a tri-axial accelerometer arrangement deployed in the housing for measuring lateral vibrations and bit bounce. Downhole measurement of stick/slip and other vibration components during drilling advantageously enables corrective measures to be implemented when dangerous dynamic conditions are encountered.

摘要翻译： 本发明的方面包括具有用于测量井下动态条件的传感器装置的旋转可转向转向工具。 根据本发明的旋转转向工具包括旋转速率测量装置，其设置成测量驱动轴和外部基本上不旋转的壳体之间的旋转速率差。 控制器被配置为根据旋转速率测量来确定棒/滑动参数。 示例性实施例还可以可选地包括布置在壳体中的用于测量横向振动和钻头反弹的三轴加速度计布置。 在钻井期间的井下测量棒/滑动和其他振动部件有利于在遇到危险的动态条件时实施纠正措施。

公开(公告)号：US07260479B2

公开(公告)日：2007-08-21

申请号：US11343543

申请日：2006-01-31

申请人： Graham McElhinney

发明人： Graham McElhinney

IPC分类号： G01V3/18 ,  E21B47/09 ,  G01N27/72

CPC分类号： E21B47/0905 ,  E21B7/061

摘要： A method for locating casing string joints using a measurement while drilling tool is disclosed. The method includes deploying an MWD tool in a wellbore and measuring the magnetic field along a length of the wellbore. Changes in the magnetic field along the length of the wellbore are evaluated to determine the location of at least one casing joint. Embodiments of this invention may be advantageously utilized, for example, in sidetracking operations to avoid milling through a casing joint. Use of this invention may obviate the need for a separate wireline run to locate the casing joints.

摘要翻译： 公开了一种利用钻孔工具进行测量来定位套管柱接头的方法。 该方法包括将MWD工具部署在井筒中并沿着井眼的长度测量磁场。 评估沿着井眼长度的磁场变化，以确定至少一个套管接头的位置。 本发明的实施例可以有利地用于例如侧钻操作以避免通过套管接头的铣削。 使用本发明可以避免需要单独的电线运行来定位套管接头。

公开(公告)号：US07245229B2

公开(公告)日：2007-07-17

申请号：US10882789

申请日：2004-07-01

申请人： Emilio Baron ,  Stephen Jones

发明人： Emilio Baron ,  Stephen Jones

IPC分类号： G01V3/00

CPC分类号： E21B47/12 ,  G01V11/002

摘要： A method for communicating with a downhole device is provided. The method includes predefining an encoding language including codes understandable to the device, the codes represented in the language as predefined value combinations of drill string rotation variables such as rotation rate or duration. The method further includes rotating a drill string at first and second rates and measuring the rotation rates downhole. The first measured rotation rate is processed downhole in combination with the second measured rotation rate to acquire a code in the language at the downhole device. Embodiments of the invention are useful, for example, for transmitting commands from the surface to a downhole device such as a directional drilling tool. Exemplary embodiments of this invention advantageously provide for quick and accurate communication with a downhole device without substantially interrupting the drilling process.

摘要翻译： 提供了一种与井下装置通信的方法。 该方法包括预定义包括对设备可理解的代码的编码语言，以语言表示的代码作为钻柱旋转变量（例如旋转速率或持续时间）的预定义值组合。 该方法还包括以第一和第二速率旋转钻柱并测量井下旋转速率。 第一测量的旋转速率与第二测量的旋转速率结合在井下，以获得井下装置中的语言的代码。 本发明的实施例例如用于将命令从表面传送到诸如定向钻具的井下装置是有用的。 本发明的示例性实施例有利地提供与井下装置的快速和准确的通信，而基本上不中断钻孔过程。

公开(公告)号：US07243740B2

公开(公告)日：2007-07-17

申请号：US10984466

申请日：2004-11-09

申请人： Terrence G. Frith

发明人： Terrence G. Frith

IPC分类号： E21B4/02

CPC分类号： E21B21/002

摘要： A filter assembly including a primary flow passageway having at least one filter deployed therein and a secondary flow passageway having a bypass filter deployed therein is provided. The filter assembly further includes a bypass valve assembly configured to selectively open and close the secondary flow passageway when a fluid pressure is respectively above and below an adjustable, predetermined threshold value. Exemplary embodiments of this invention may be coupled to a drill string and advantageously utilized to filter drilling fluid downhole. Such embodiments tend to advantageously improve the filtering efficiency and safety of drilling operations.

摘要翻译： 提供一种过滤器组件，其包括具有其中部署的至少一个过滤器的主流动通道和其中布置有旁路过滤器的二次流动通道。 过滤器组件还包括旁通阀组件，其构造成当流体压力分别高于和低于可调节的预定阈值时选择性地打开和关闭二次流动通道。 本发明的示例性实施例可以联接到钻柱并且有利地用于在井下过滤钻井液。 这样的实施例倾向于有利地提高钻井作业的过滤效率和安全性。

公开(公告)号：US07222681B2

公开(公告)日：2007-05-29

申请号：US11062299

申请日：2005-02-18

申请人： Stephen Jones ,  Junichi Sugiura

发明人： Stephen Jones ,  Junichi Sugiura

IPC分类号： E21B44/00 ,  E21B7/04

CPC分类号： E21B47/12

摘要： A method for communicating with a downhole tool located in a subterranean borehole is disclosed. Exemplary embodiments of the method include encoding data and/or commands in a sequence of varying drill string rotation rates and drilling fluid flow rates. The varying rotation rates and flow rates are measured downhole and processed to decode the data and/or the commands. In one exemplary embodiment, commands in the form of relative changes to current steering tool offset and tool face settings are encoded and transmitted downhole. Such commands may then be executed, for example, to change the steering tool settings and thus the direction of drilling. Exemplary embodiments of this invention advantageously provide for quick and accurate communication with a downhole tool.

摘要翻译： 公开了一种与位于地下钻孔中的井下工具进行通信的方法。 该方法的示例性实施例包括以变化的钻柱旋转速率和钻井液流速的顺序编码数据和/或命令。 在井下测量变化的旋转速率和流速，并进行处理以对数据和/或命令进行解码。 在一个示例性实施例中，以当前转向工具偏移和工具面设置的相对变化形式的命令被编码并在井下传送。 然后可以执行这样的命令，例如，改变转向工具的设置，从而改变钻孔的方向。 本发明的示例性实施例有利地提供了与井下工具的快速和准确的通信。

公开(公告)号：US20070030007A1

公开(公告)日：2007-02-08

申请号：US11195287

申请日：2005-08-02

申请人： Robert Moore

发明人： Robert Moore

IPC分类号： G01V3/00

CPC分类号： E21B47/024

摘要： An apparatus for obtaining tool face angles on a rotating drill collar in substantially real time is disclosed. In one exemplary embodiment the apparatus includes a magnetoresistive magnetic field sensor deployed in a tool body. The apparatus further includes a programmed processor configured to calculate tool face angles in substantially real time from the magnetic field measurements. The programmed processor may optionally further be configured to correlate the calculated tool face angles with logging while drilling measurements for use in borehole imaging applications.

摘要翻译： 公开了一种用于基本上实时地在旋转钻铤上获得工具面角度的装置。 在一个示例性实施例中，该装置包括部署在工具主体中的磁阻磁场传感器。 该装置还包括被配置为从磁场测量基本上实时地计算工具面角度的编程处理器。 编程的处理器可以可选地进一步被配置成将所计算的工具面角度与记录相关联，同时钻孔测量以用于井眼成像应用。