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公开(公告)号：US10209388B2
公开(公告)日：2019-02-19
申请号：US14223927
申请日：2014-03-24
Applicant: Schlumberger Technology Corporation
Inventor： Michael Wilt , Ping Zhang , Nestor Cuevas , Jiuping Chen
IPC: G01V3/30
Abstract: Systems, methods, and apparatuses to generate a crosswell data set are described. In certain aspects, a method includes producing a first electromagnetic field at the earth's surface with a transmitter at a first location, detecting in a first borehole a first field signal induced by the first electromagnetic field, detecting in a second borehole a second field signal induced by the first electromagnetic field, and generating a crosswell data set from the first field signal and the second field signal. A formation model may be created from the crosswell data set.
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公开(公告)号：US20180003042A1
公开(公告)日：2018-01-04
申请号：US15620009
申请日：2017-06-12
Applicant: Schlumberger Technology Corporation
Inventor： Luis Eduardo DePavia , Dean Homan , Robert Tennent , Gaelle Jannin , Liang Sun , Jiuping Chen
CPC classification number: E21B47/122 , E21B17/028 , E21B47/011 , E21B47/02216 , E21B47/121 , G01V3/30 , G01V11/002 , H01Q1/04
Abstract: A method for recovering data from a downhole tool in a wellbore includes measuring an electromagnetic signal using first and second sensors. At least a portion of the electromagnetic signal is transmitted by a downhole tool positioned in a first wellbore. The first and second sensors are each positioned at a different location along a length of a second wellbore. The electromagnetic signal measured by the first and second sensors is decoded to recover a property measured by the downhole tool.
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公开(公告)号：US20170146681A1
公开(公告)日：2017-05-25
申请号：US14951920
申请日：2015-11-25
Applicant: Schlumberger Technology Corporation
Inventor： Nestor Cuevas , Michael Wilt , Ping Zhang , Jiuping Chen
CPC classification number: G01V3/30
Abstract: In one embodiment, a method includes receiving one or more datasets including measured vertical electric and magnetic fields excited by one or more radial and azimuthal electric field antennas from a downtool into one or more processors, wherein each of the one or more datasets corresponds to a different position of the one or more radial azimuthal electric field antennas, simultaneously inverting the one or more datasets using the one or more processors, and as a result of the simultaneous inversion, generating by the one or more processors a three-dimensional (3D) image of a portion of the geological formation.
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公开(公告)号：US20140200808A1
公开(公告)日：2014-07-17
申请号：US13742923
申请日：2013-01-16
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Ping Zhang , Nestor Cuevas , Michael Wilt , Jiuping Chen
CPC classification number: G01V3/30
Abstract: An electromagnetic (EM) data acquisition method for a geological formation may include operating EM measurement devices to determine phase and amplitude data from the geological formation. The EM measurement devices may include at least one first EM measurement device within a borehole in the geological formation, and at least one second EM measurement device at a surface of the geological formation. The method may further include processing the phase data independent from the amplitude data to generate a geological constituent map of the geological formation, and identifying different geological constituents in the geological constituent map based upon the measured amplitude data.
Abstract translation: 用于地质构造的电磁（EM）数据采集方法可以包括操作EM测量装置以确定来自地质构造的相位和振幅数据。 EM测量装置可以包括位于地质层内的钻孔内的至少一个第一EM测量装置，以及在地质层表面的至少一个第二EM测量装置。 该方法还可以包括独立于振幅数据处理相位数据，以生成地质构造的地质成分图，并且基于测量的幅度数据识别地质成分图中的不同地质成分。
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公开(公告)号：US11150375B2
公开(公告)日：2021-10-19
申请号：US13742923
申请日：2013-01-16
Applicant: Schlumberger Technology Corporation
Inventor： Ping Zhang , Nestor Cuevas , Michael Wilt , Jiuping Chen
IPC: G01V3/30
Abstract: An electromagnetic (EM) data acquisition method for a geological formation may include operating EM measurement devices to determine phase and amplitude data from the geological formation. The EM measurement devices may include at least one first EM measurement device within a borehole in the geological formation, and at least one second EM measurement device at a surface of the geological formation. The method may further include processing the phase data independent from the amplitude data to generate a geological constituent map of the geological formation, and identifying different geological constituents in the geological constituent map based upon the measured amplitude data.
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Patent Agency Ranking
公开(公告)号：US20210180448A1
公开(公告)日：2021-06-17
申请号：US17247445
申请日：2020-12-11
Applicant: Schlumberger Technology Corporation
Inventor： Pavel Annenkov , Melisa Lourdes Ramirez Tovar , Robert Tennent , Sam Soundar , Jiuping Chen , Liang Sun , Richard Hunter , Wei Zhou
Abstract: Communication between the surface and a downhole location, such as a bottomhole assembly and/or an RSS is performed by electromagnetic downlink. Electromagnetic signals are transmitted from the surface through the formation at a frequency of 8 Hz or greater. Electromagnetic signals are transmitted and received while drilling or during drilling activities. In this manner, information and instructions may be transmitted to the BHA while drilling.
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公开(公告)号：US20210095525A1
公开(公告)日：2021-04-01
申请号：US17060498
申请日：2020-10-01
Applicant: Schlumberger Technology Corporation
Inventor： Luis Eduardo DePavia , Jiuping Chen , Liang Sun , Richard Hunter
IPC: E21B7/06 , E21B49/08 , E21B47/0228
Abstract: A method for steering a downhole tool includes receiving an electromagnetic (EM) signal from the downhole tool. The downhole tool is in a wellbore in a formation. The EM signal comprises a gap voltage and a gap current that are measured across a gap sub in the downhole tool. The method also includes determining a gap impedance based at least partially upon the gap voltage and the gap current. The method also includes determining a first formation resistivity at a first location in the wellbore based at least partially upon the gap impedance. The method also includes steering the downhole tool based at least partially upon the first formation resistivity.
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公开(公告)号：US10704385B2
公开(公告)日：2020-07-07
申请号：US16251120
申请日：2019-01-18
Applicant: Schlumberger Technology Corporation
Inventor： Jiuping Chen , Gaelle Jannin , Liang Sun
Abstract: A method for modeling an electromagnetic (EM) telemetry signal includes straightening a well in a model and dividing the well into a plurality of segments. The method also includes determining an electrical current in one or more of the segments when the well is straightened. The method also includes replacing the well with equivalent electrical sources based at least partially upon the electrical current in one or more of the segments. The method also includes bending the well back into its original shape in the model and determining the electrical current in one or more of the segments by projection when the well is back in its original shape. The method also includes summing EM fields for each of the one or more segments to estimate the EM telemetry signal.
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公开(公告)号：US10378337B2
公开(公告)日：2019-08-13
申请号：US15574509
申请日：2016-05-27
Applicant: Schlumberger Technology Corporation
Inventor： Luis Eduardo DePavia , Gaelle Jannin , Jiuping Chen
Abstract: EM-telemetry remote sensing wireless systems include a plurality of downhole tools in a drilling area, an array of electrodes at the earth's surface, a noise reduction manager, and an acquisition system. Each downhole tool transmits a modulated current into the formation to generate an electromagnetic signal at the earth's surface. The array of electrodes comprises a plurality of nodes. Each node has a plurality of electrodes that receives the signal. The signal received by the node has a signal component from the tool and a noise component from the area. The noise reduction manager has a de-mixing vector that filters the noise component of the signal and increases a signal to noise ratio. The acquisition system located on earth's surface wirelessly receives signal from each node.
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公开(公告)号：US20180128097A1
公开(公告)日：2018-05-10
申请号：US15574509
申请日：2016-05-27
Applicant: Schlumberger Technology Corporation
Inventor： Luis Eduardo DePavia , Gaelle Jannin , Jiuping Chen
IPC: E21B47/12
CPC classification number: E21B47/122 , E21B7/04 , E21B45/00 , E21B47/024 , E21B47/0905 , E21B49/00 , E21B49/08
Abstract: EM-telemetry remote sensing wireless systems include a plurality of downhole tools in a drilling area, an array of electrodes at the earth's surface, a noise reduction manager, and an acquisition system. Each downhole tool transmits a modulated current into the formation to generate an electromagnetic signal at the earth's surface. The array of electrodes comprises a plurality of nodes. Each node has a plurality of electrodes that receives the signal. The signal received by the node has a signal component from the tool and a noise component from the area. The noise reduction manager has a de-mixing vector that filters the noise component of the signal and increases a signal to noise ratio. The acquisition system located on earth's surface wirelessly receives signal from each node.
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