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1. 发明申请

WO2022271909A1 EFFICIENT DAMPED PULSED ENERGY TRANSMITTER 审中-公开
公开(公告)号：WO2022271909A1
公开(公告)日：2022-12-29
申请号：PCT/US2022/034663
申请日：2022-06-23
申请人： BAKER HUGHES OILFIELD OPERATIONS LLC
发明人： FORGANG, Stanislav , ROCHELEAU, Ryan , RAMIREZ, Marc Stephen , BOULAKNADAL, Youssef
IPC分类号： G01V3/32 , G01V3/28 , E21B47/12 , E21B47/13 , E21B47/20 , G01N24/081
摘要： A device for generating oscillating signals includes an energy transfer device configured to apply an oscillating signal to a sensitive volume, and a resonant tuning circuit including the energy transfer device. The tuning circuit includes a tuning capacitor configured to cause the tuning circuit to resonate at a selected frequency, and an energy storage device. The transmitting device also includes a controller configured to apply a pulse sequence to the tuning circuit having a series of pulses, the energy storage device configured to retain electrical energy at an end of a first pulse, and discharge the electrical energy to the tuning circuit at an onset of a next pulse of the pulse sequence.

2. 发明申请

WO2022260724A1 DOWNHOLE TUBULAR INSPECTION USING PARTIAL-SATURATION EDDY CURRENTS 审中-公开
公开(公告)号：WO2022260724A1
公开(公告)日：2022-12-15
申请号：PCT/US2022/016750
申请日：2022-02-17
申请人： HALLIBURTON ENERGY SERVICES, INC.
发明人： FOUDA, Ahmed, Elsayed , DAI, Junwen , HILL, Freeman, Lee , JONES, Christopher, Michael
IPC分类号： G01V3/28 , G01V3/38 , E21B17/10 , E21B47/12
摘要： A system for inspecting a tubular may comprise an electromagnetic (EM) logging tool and information handling system. The EM logging tool may further include a mandrel, one or more sensor pads attached to the mandrel by one or more extendable arms, and one or more partial saturation eddy current sensors disposed on each of the one or more sensor pads.

3. 发明申请

WO2022232153A1 INVERSION-BASED COMBINED COLLOCATED (TIME-DOMAIN) AND MULTI-FREQUENCY NON-COLLOCATED SENSOR DATA PROCESSING FOR EVALUATING CASINGS 审中-公开
公开(公告)号：WO2022232153A1
公开(公告)日：2022-11-03
申请号：PCT/US2022/026361
申请日：2022-04-26
申请人： SCHLUMBERGER TECHNOLOGY CORPORATION , SCHLUMBERGER CANADA LIMITED , SERVICES PETROLIERS SCHLUMBERGER , SCHLUMBERGER TECHNOLOGY B.V.
发明人： OMAR, Saad , OMERAGIC, Dzevat
IPC分类号： G01V3/20 , G01V3/30 , G01V3/38 , G01V3/28
摘要： An inversion-based method has been developed to evaluate up to 5 or 6 nested casings by utilizing complementary sensitivities from time-domain collocated (relatively shallow) and multi-frequency, multi-spacing non-collocated (both relatively shallow and relatively deeper) pulsed eddy current measurements. Stand-alone inversion-based techniques are also disclosed to process time-domain collocated sensor measurements, which may come from single or multiple sensors of different lengths.

4. 发明申请

WO2021198530A1 CORROSION EVALUATION OF NESTED CASINGS VIA PULSED EDDY CURRENT 审中-公开
公开(公告)号：WO2021198530A1
公开(公告)日：2021-10-07
申请号：PCT/EP2021/058902
申请日：2021-04-06
申请人： SCHLUMBERGER TECHNOLOGY CORPORATION , SCHLUMBERGER CANADA LIMITED , SERVICES PÉTROLIERS SCHLUMBERGER , SCHLUMBERGER TECHNOLOGY B.V.
发明人： DUBOURG, Isabelle , LEGENDRE, Emmanuel , MEGE, Fabrice , BABA, Rina
IPC分类号： G01V3/28 , G01V3/38 , E21B47/006
摘要： Methods and systems pertaining to a processing system and a downhole logging tool for investigating nested tubulars in a borehole. The downhole logging tool includes a transmitter coil for emitting a broadband excitation signal including one or more step excitations. The downhole logging tool also includes receiver coils including at least two receiver coils spaced apart from the transmitter coil at respective first and second distances from the transmitter, the first and second distances being distinct from each other, and each receiver coil being able to receive a response signal resulting from the excitation signal. The downhole logging tool also includes an acquisition system for recording the excitation signal and the response signal of each receiver coil over time. The processing system derives information indicative of variations in individual thicknesses of the nested casing tubulars based on variations of the response signals over time.

5. 发明申请

WO2019168555A1 PARALLEL COIL PATHS FOR DOWNHOLE ANTENNAS 审中-公开
公开(公告)号：WO2019168555A1
公开(公告)日：2019-09-06
申请号：PCT/US2018/037601
申请日：2018-06-14
申请人： HALLIBURTON ENERGY SERVICES, INC.
发明人： KOROVIN, Alexei , PRAKASH, Anand
IPC分类号： G01V3/28 , H01Q1/22 , E21B47/01
摘要： A tool that uses antennas to evaluate an environment surrounding a borehole, the tool including an antenna assembly, and the antenna assembly including a body with a longitudinal central axis, and an antenna mounted on the body in a continuous groove comprising a plurality of circumferential portions and a plurality of transition portions, with each of the circumferential portions being formed in a plane and each of the planes being spaced apart from each other and parallel to each other; and with each of the circumferential portions at least partially extending circumferentially around the body within its respective plane and each of the transition portions transitioning the groove from an end of one of the circumferential portions to an end of an adjacent one of the circumferential portions.

6. 发明申请

WO2019094225A1 PIPE THICKNESS ESTIMATION WITH AUTOMATIC CHANNEL QUALITY ASSESSMENT 审中-公开
公开(公告)号：WO2019094225A1
公开(公告)日：2019-05-16
申请号：PCT/US2018/058186
申请日：2018-10-30
申请人： HALLIBURTON ENERGY SERVICES, INC.
发明人： REN, Kai , FOUDA, Ahmed Elsayed , CAPOGLU, Ilker R.
IPC分类号： G01V3/28 , E21B47/00 , E21B47/09 , G01B15/02 , G01N17/04
摘要： A method and system for estimating a thickness of at least one casing string in a cased hole may comprise obtaining a plurality of induction measurements from a plurality of channels using a casing inspection tool, computing a quality vector for the plurality of channels, wherein each element of the quality vector is a numeric output, identifying the plurality of channels is a high-quality or a low-quality based at least in part on an evaluation of the quality vector to obtain a high-quality subset of the plurality of channels and a low-quality subset of the plurality of channels, and estimating the thickness of the at least one casing with an inversion using a high-quality subset of the plurality of channels. A system may comprise a multi-channel induction tool and an information handling system. The multi-channel induction tool may comprise at least one transmitter and at least one receiver.

7. 发明申请

WO2019089383A1 METHOD AND APPARATUS FOR FORMATION EVALUATION 审中-公开
公开(公告)号：WO2019089383A1
公开(公告)日：2019-05-09
申请号：PCT/US2018/057761
申请日：2018-10-26
申请人： WEATHERFORD TECHNOLOGY HOLDINGS, LLC
发明人： DONG, Qiuzhao , BINFORD, Tommy , BARNETT, Craig , ZURCHER, Derick
IPC分类号： G01V3/28
CPC分类号： G01V3/30 , G01V3/28 , H01Q7/00 , H01Q21/062
摘要： Antenna arrays for well logging/measuring tools are disclosed. The antenna arrays include at least four antenna wire elements. Current provided to or sensed by each of the antenna wire elements can be independently controlled or sensed. The antenna arrays can be configured to produce or sense electromagnetic dipole moments in any direction in three dimensional space.

8. 发明申请

WO2016201057A1 ANTENNA STRUCTURES AND APPARATUS FOR DIELECTRIC LOGGING 审中-公开
标题翻译：天线结构和电介质记录装置
公开(公告)号：WO2016201057A1
公开(公告)日：2016-12-15
申请号：PCT/US2016/036619
申请日：2016-06-09
申请人： BAKER HUGHES INCORPORATED
发明人： KOUCHMESHKY, Babak , FANINI, Otto, N. , FORGANG, Stanislav, W.
IPC分类号： E21B47/00 , G01V3/18 , G01V3/26 , G01V3/28
CPC分类号： G01V3/38 , G01V3/30 , H01Q1/04 , H01Q7/00 , H01Q11/10 , H01Q21/24
摘要： This disclosure describes a dielectric logging tool for evaluating the earth formation using at least one transmitter antenna disposed in a cavity on a pad engaged with a borehole wall. The logging tool may comprise at least one power driver in electrical communication with the at least one transmitter antenna and configured to modulate a phase of output current of the at least one power driver. The logging tool may enforce symmetric current on both feeds of the at least one transmitter antenna causing a point of symmetry of the current to align with an axis of geometric symmetry of the at least one transmitter antenna. A parameter of interest of the formation may be estimated by using the attenuation and phase difference between the received and transmitted signals or between received signals from spaced receivers.
摘要翻译：本公开描述了一种用于使用至少一个发射天线来评估地层的介电测井工具，所述发射天线设置在与钻孔壁接合的垫上的空腔中。测井工具可以包括与至少一个发射机天线电通信的至少一个功率驱动器，并且被配置成调制至少一个功率驱动器的输出电流的相位。测井工具可以在至少一个发射机天线的两个馈电上施加对称电流，使得电流的对称点与至少一个发射器天线的几何对称轴对齐。可以通过使用接收和发送的信号之间的衰减和相位差或者来自间隔的接收器的接收信号来估计地层感兴趣的参数。

9. 发明申请

WO2016007883A1 EVALUATION TOOL FOR CONCENTRIC WELLBORE CASINGS 审中-公开
标题翻译：浓缩井眼箱的评估工具
公开(公告)号：WO2016007883A1
公开(公告)日：2016-01-14
申请号：PCT/US2015/039990
申请日：2015-07-10
申请人： HALLIBURTON ENERGY SERVICES, INC.
发明人： KHALAJ AMINEH, Reza , SAN MARTIN, Luis, Emilio , DONDERICI, Burkay
IPC分类号： E21B47/00 , G01V3/18 , G01V3/28
CPC分类号： G01N27/82 , E21B17/00 , E21B47/00 , E21B47/0905 , G01V3/28
摘要： A system comprises one or more first electromagnetic coils configured to generate and direct first excitation signals toward a plurality of casings in a wellbore and receive response signals based on the excitation signals. The system also comprises a magnetic field source configured to generate a static magnetic field in a particular casing of the plurality of casings and a magnetometer configured to receive response signals based on the static magnetic field in the particular casing. The system further comprises one or more processors configured to receive a first response signal from the one or more electromagnetic coils, receive a second response signal from the magnetometer, and determine, based on the first response signal and the second response signal, whether a defect exists in the plurality of casings.
摘要翻译：系统包括一个或多个第一电磁线圈，其被配置为产生并将第一激励信号引导到井眼中的多个壳体，并且基于激励信号接收响应信号。该系统还包括被配置为在多个壳体的特定壳体中产生静态磁场的磁场源和被配置为基于特定壳体中的静态磁场接收响应信号的磁力计。该系统还包括一个或多个处理器，被配置为从一个或多个电磁线圈接收第一响应信号，从磁力计接收第二响应信号，并且基于第一响应信号和第二响应信号确定缺陷存在于多个壳体中。

10. 发明申请

WO2016007305A1 MULTIPLE-DEPTH EDDY CURRENT PIPE INSPECTION WITH A SINGLE COIL ANTENNA 审中-公开
标题翻译：多层次EDDY电流管检测与单线圈天线
公开(公告)号：WO2016007305A1
公开(公告)日：2016-01-14
申请号：PCT/US2015/037631
申请日：2015-06-25
申请人： HALLIBURTON ENERGY SERVICES, INC.
发明人： DONDERICI, Burkay , SANMARTIN, Luis
IPC分类号： E21B47/00 , G01V3/18 , G01V3/28
CPC分类号： E21B47/0006 , E21B47/0905 , G01N27/90 , G01V3/28
摘要： A method includes introducing a pipe inspection tool into a first pipe positioned within a wellbore and further positioned within at least a second pipe. The pipe inspection tool includes an electromagnetic sensor having a coil antenna that includes a coil winding extending axially along at least a portion of the electromagnetic sensor. An excitation signal is transmitted between a first terminal and a second terminal of the coil antenna. A first response signal is measured between a third terminal and a fourth terminal of the coil antenna, wherein at least one of the third and fourth terminals is different from the first and second terminals. The first response signal is then processed to determine a characteristic of the first pipe.
摘要翻译：一种方法包括将管道检查工具引入位于井眼内并进一步定位在至少第二管道内的第一管中。管道检查工具包括具有线圈天线的电磁传感器，该线圈天线包括沿电磁传感器的至少一部分轴向延伸的线圈绕组。励磁信号在线圈天线的第一端子和第二端子之间传输。在线圈天线的第三端子和第四端子之间测量第一响应信号，其中第三端子和第四端子中的至少一个与第一端子和第二端子不同。然后处理第一响应信号以确定第一管的特性。

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