公开(公告)号：US20240011824A1

公开(公告)日：2024-01-11

申请号：US18370974

申请日：2023-09-21

申请人： Silixa Ltd.

发明人： Mahmoud Farhadiroushan ,  Tom Richard Parker ,  Sergey Shatalin

IPC分类号： G01H9/00 ,  G01D5/353 ,  E21B47/002 ,  E21B47/107 ,  G01M11/00 ,  G01F1/661 ,  G01F1/66 ,  G01V1/40

CPC分类号： G01H9/004 ,  G01D5/35383 ,  G01D5/35325 ,  G01D5/35364 ,  E21B47/002 ,  E21B47/107 ,  G01D5/35303 ,  G01D5/35335 ,  G01M11/331 ,  G01D5/35306 ,  G01F1/661 ,  G01F1/66 ,  G01V1/40 ,  G01D5/35377 ,  G01D5/35358 ,  E21B47/0025

摘要： The present invention provides novel apparatus and methods for fast quantitative measurement of perturbation of optical fields transmitted, reflected and/or scattered along a length of an optical fibre. The present invention can be used for point sensors as well as distributed sensors or the combination of both. In particular this technique can be applied to distributed sensors while extending dramatically the speed and sensitivity to allow the detection of acoustic perturbations anywhere along a length of an optical fibre while achieving fine spatial resolution. The present invention offers unique advantages in a broad range of acoustic sensing and imaging applications. Typical uses are for monitoring oil and gas wells such as for distributed flow metering and/or imaging, seismic imaging, monitoring long cables and pipelines, imaging within large vessel as well as for security applications.

公开(公告)号：US11746643B2

公开(公告)日：2023-09-05

申请号：US17382620

申请日：2021-07-22

申请人： Probe Technology Services, Inc.

发明人： Jun Zhang ,  Yibing Zheng

IPC分类号： E21B47/005 ,  G01V1/50 ,  G01V1/40 ,  E21B33/14

CPC分类号： E21B47/005 ,  G01V1/40 ,  G01V1/50 ,  E21B33/14

摘要： Various downhole logging tools and methods of using and making the same are disclosed. In one aspect a method evaluating cement bond quality in a well is provided. In a well with a particular casing/tubing configuration, waveforms of acoustic energy returning from the tubing and the casing with the tubing present are recorded. A frequency spectrum from the recorded waveforms is determined. Amplitudes of the returning acoustic energy at one or more preselected frequency(s) of interest of a range of frequencies at which the amplitudes are noticeably affected by cement bond quality for the particular casing/tubing configuration are determined. The determined amplitudes are compared with one or more baseline amplitudes to look for indications of cement bond quality. Other aspects involve time domain analysis.

公开(公告)号：US20230220762A1

公开(公告)日：2023-07-13

申请号：US18154069

申请日：2023-01-13

申请人： Schlumberger Technology Corporation

发明人： Cédric Perrin ,  Jose Luis Lopes ,  Sébastien Jacquart ,  Miguel Delgado ,  Florian Becker ,  Pedro Alexandre Das Neves ,  Ram Sunder Kalyanraman ,  Syed Talghani ,  Alexis He ,  Chew Yeong Leong ,  Josselin Kherroubi

IPC分类号： E21B47/002 ,  E21B47/08 ,  G01V1/40 ,  E21B47/01

CPC分类号： E21B47/0025 ,  E21B47/08 ,  G01V1/40 ,  E21B47/01

摘要： The present disclosure introduces an apparatus including a toolstring for use in a tubular extending into a subterranean formation. The toolstring includes modular components that include one or more caliper modules and a power and control (P/C) module. The one or more caliper modules each include radially rotatable fingers for sensing an internal diameter of the tubular. The P/C module is operable for distributing power and control signals to the one or more caliper modules. The caliper and P/C modules are mechanically and electrically interconnected by common lower interfaces of the caliper and P/C modules.

公开(公告)号：US20190129046A1

公开(公告)日：2019-05-02

申请号：US16193855

申请日：2018-11-16

申请人： Institute of Geology and Geophysics, Chinese Academy of Sciences

发明人： Yuntao SUN ,  Zili WANG ,  Wenxuan CHEN ,  Wenxiu ZHANG ,  Yongyou YANG ,  Qingyun DI ,  Jian ZHENG

IPC分类号： G01V1/00 ,  E21B49/00 ,  G01V1/40 ,  H02M7/538 ,  H03F3/26

CPC分类号： G01V1/005 ,  E21B49/00 ,  G01V1/04 ,  G01V1/40 ,  G01V1/44 ,  G01V2200/16 ,  G01V2210/121 ,  G01V2210/1214 ,  G01V2210/32 ,  G01V2210/6161 ,  H02M7/538 ,  H03F3/265 ,  H03F3/45475 ,  H03F2200/541

摘要： In an apparatus for multi-pole acoustic logging while drilling, a N-cycle sinusoidal wave signal is generated by utilizing a signal processor, and amplified into a high-voltage sinusoidal excitation signal by utilizing a power amplifier, and output to a transmitting transducer. The signal processor simultaneously generates an enable signal. The enable signal includes a transient discharge enable signal. The power amplifier is connected with a transient discharge circuit. After the signal processor generates N cycles of a sinusoidal wave, the transient discharge enable signal enables the transient discharge circuit to discharge to release an energy storage current of a power transformer so as to eliminate a high-voltage ringing effect and improve an excitation efficiency of the transducer.

公开(公告)号：US20180355712A1

公开(公告)日：2018-12-13

申请号：US15781923

申请日：2016-07-12

申请人： Halliburton Energy Services, Inc.

发明人： Nam Nguyen ,  Yi Yang Ang ,  Rebecca Corina Jachmann ,  Yinghui Lu ,  Srinivasan Jagannanthan ,  Avinash Vinayak Taware

IPC分类号： E21B47/10 ,  G01V1/40

CPC分类号： E21B47/101 ,  G01H17/00 ,  G01V1/40

摘要： Disclosed are systems and methods for processing broadband acoustic signals acquired by a plurality of acoustic sensors, using an array-signal-processing technique to compute fused-signal maps in the frequency domain for a plurality of frequency bins. In accordance with various embodiments, the fused-signal maps are combined across the frequency bins, with respective weightings that are based on eigenvalues of covariance matrices computed for the plurality of frequency bins. The combined maps can be used to locate an acoustic source in a wellbore.

公开(公告)号：US20180313974A1

公开(公告)日：2018-11-01

申请号：US15755720

申请日：2015-11-30

申请人： Halliburton Energy Services Inc.

发明人： Andrew David Barfoot ,  Han-Sun Choi ,  Xinwei Lan

IPC分类号： G01V8/24 ,  G01B9/02

CPC分类号： G01V1/40 ,  G01V8/16 ,  G02B6/29386 ,  H04J14/02

摘要： An interrogation system may be coupled to a fiber-optic cable positioned in a wellbore to interrogate a plurality of optical sensors coupled to the fiber-optic cable. The interrogation system may include an optical frequency comb source having a plurality of narrowband optical carriers transmitting light to the plurality of optical sensors. Each of the plurality of optical sensors may include a pair of partial reflectors to reflect the light transmitted by the optical frequency comb to one or more optical receivers to receive the reflection signals In some aspects, the interrogation system may include a de-interleaver device for separating reflected light signals having adjacent wavelength into separate optical waveguides. In additional aspects, interrogation system may also include a data processing system having a processing device for performing interferometric measurements using the reflected light signals.

公开(公告)号：US10083258B2

公开(公告)日：2018-09-25

申请号：US14483854

申请日：2014-09-11

申请人： SCHLUMBERGER TECHNOLOGY CORPORATION

发明人： Armin I. Kauerauf ,  Daniel Bruno Palmowski ,  Thomas Hantschel ,  Oliver C. Mullins

IPC分类号： G06F17/50 ,  G01V1/40 ,  G01V99/00

CPC分类号： G06F17/5009 ,  G01V1/40 ,  G01V99/005

摘要： A method for performing a field operation within a geologic basin having rock formations and a reservoir that includes fluids includes generating, by forward modeling using a petroleum system model (PSM), an estimate of a fluid property distribution of a fluid within the reservoir of the geologic basin. The method further includes detecting, from fluid samples, a fluid property gradient within the geologic basin. The fluid samples are extracted from within at least one wellbore drilled through the rock formations. The method further includes, comparing the estimate of the fluid property distribution with the detected fluid property gradient to generate a comparison result, iteratively adjusting, based on the comparison result, the PSM to generate an adjusted PSM, and performing, based on the adjusted PSM, the field operation within the geologic basin.

公开(公告)号：US20180163533A1

公开(公告)日：2018-06-14

申请号：US15577326

申请日：2016-05-31

申请人： Schlumberger Technology Corporation

发明人： Sylvain Wlodarczyk ,  Keith Pinto ,  Olivier Marché ,  Akshat Gupta

IPC分类号： E21B49/00 ,  E21B47/06 ,  G01V1/40

CPC分类号： E21B49/008 ,  E21B47/06 ,  E21B49/00 ,  G01V1/40 ,  G01V99/00

摘要： A system and method for correcting capillary pressure curves includes creating a capillary pressure curve using multiple linked hyperbolic tangents, determining a closure correction pressure cutoff of the capillary pressure curve, and correcting the capillary pressure curve. The correction may include normalizing the capillary pressure curve and extrapolating the capillary pressure curve.

公开(公告)号：US09995837B2

公开(公告)日：2018-06-12

申请号：US14772214

申请日：2014-11-07

申请人： Halliburton Energy Services, Inc.

发明人： Mark V. Collins

IPC分类号： G01V1/50 ,  G01V1/40 ,  E21B49/00 ,  E21B47/10 ,  G01V1/36 ,  E21B47/14

CPC分类号： G01V1/50 ,  E21B47/101 ,  E21B47/14 ,  E21B49/00 ,  G01V1/36 ,  G01V1/40 ,  G01V2210/54

摘要： Various embodiments include apparatus and methods to extract reflections from acoustic array data collected from a receiver array. A beam-former can be generated to detect a reflection wave in the presence of a direct wave identified from collected waveforms, where the beam-former can be correlated to receiver and depth for the array. The direct wave and the reflection wave can be separated to extract the reflection wave, where the separation is correlated to receiver and depth for the array. The extracted reflected wave can be used to image and/or analyze entities associated with the borehole. Additional apparatus, systems, and methods are disclosed.

公开(公告)号：US09890631B2

公开(公告)日：2018-02-13

申请号：US15099344

申请日：2016-04-14

申请人： BAKER HUGHES INCORPORATED

发明人： Juan Carlos Flores Perez

IPC分类号： E21B47/09 ,  E21B47/18 ,  E21B34/06 ,  G01V3/26 ,  G01V5/04 ,  G01V1/40

CPC分类号： E21B47/09 ,  E21B34/06 ,  E21B47/0905 ,  E21B47/18 ,  E21B47/187 ,  G01V1/40 ,  G01V3/26 ,  G01V3/28 ,  G01V5/04

摘要： A device, system, and method for locating collars along a casing string. The device includes a casing collar locator (CCL) and a valve in communication with the CCL connected to a work string. Fluid is pumped down the work string as the device is used to locate collars along a string. Upon detection of a collar, the CCL sends a signal to the valve, which causes the actuation of the valve to decreases a flow area within a work string. The decrease in flow area causes a pressure increase within the work string, which may be detected at the surface to indicate the detection of a collar. The device may include an amplifier and power source to amplify the signal from the CCL to the valve. The CCL may detect collars by a change in magnetic flux or by the detection of a signal emitted by individual collars.