Patents by Inventor Jiuping Chen
Jiuping Chen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11719048Abstract: 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.Type: GrantFiled: October 1, 2020Date of Patent: August 8, 2023Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Luis Eduardo DePavia, Jiuping Chen, Liang Sun, Richard Hunter
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Patent number: 11150375Abstract: 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.Type: GrantFiled: January 16, 2013Date of Patent: October 19, 2021Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Ping Zhang, Nestor Cuevas, Michael Wilt, Jiuping Chen
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Patent number: 11092005Abstract: A surface system for an electromagnetic telemetry remote sensing wireless system includes a surface acquisition system configured to receive wireless signals and a plurality of nodes deployed at Earth's surface in a drilling area. Each of the nodes includes a distinct pair of first and second spaced apart electrodes and is configured to digitize voltage differences between the corresponding first and second electrodes and to wirelessly transmit the digitized voltage differences to the surface acquisition system. The voltage differences include an electromagnetic signal transmitted by a downhole tool deployed in a wellbore in the drilling area.Type: GrantFiled: July 23, 2019Date of Patent: August 17, 2021Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Luis Eduardo DePavia, Gaelle Jannin, Jiuping Chen
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Publication number: 20210180448Abstract: 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.Type: ApplicationFiled: December 11, 2020Publication date: June 17, 2021Inventors: Pavel Annenkov, Melisa Lourdes Ramirez Tovar, Robert Tennent, Sam Soundar, Jiuping Chen, Liang Sun, Richard Hunter, Wei Zhou
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Publication number: 20210095525Abstract: 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.Type: ApplicationFiled: October 1, 2020Publication date: April 1, 2021Inventors: Luis Eduardo DePavia, Jiuping Chen, Liang Sun, Richard Hunter
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Patent number: 10704385Abstract: 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.Type: GrantFiled: January 18, 2019Date of Patent: July 7, 2020Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Jiuping Chen, Gaelle Jannin, Liang Sun
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Patent number: 10502860Abstract: A method for placement of electrodes includes determining spatial distribution of a signal caused by generating an electromagnetic field in an instrument disposed in drill string used to drill a wellbore. The electromagnetic field comprises encoded measurements from at least one sensor associated with the instrument. Voltages induced by noise are measured across at least one pair of spaced apart electrodes placed at a plurality of positions spaced apart from a surface location of the wellbore. A spatial distribution of noise is estimated using the measured voltages. Positions for placement of at least two electrodes are selected using the spatial distribution of signal and the spatial distribution of noise.Type: GrantFiled: November 3, 2016Date of Patent: December 10, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Gaelle Jannin, Jiuping Chen, Andrew G. Brooks, David Kirk Conn, Luis Eduardo DePavia, Liang Sun, Michael W. Schwartz, Richard Hunter
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Publication number: 20190345818Abstract: A surface system for an electromagnetic telemetry remote sensing wireless system includes a surface acquisition system configured to receive wireless signals and a plurality of nodes deployed at Earth's surface in a drilling area. Each of the nodes includes a distinct pair of first and second spaced apart electrodes and is configured to digitize voltage differences between the corresponding first and second electrodes and to wirelessly transmit the digitized voltage differences to the surface acquisition system. The voltage differences include an electromagnetic signal transmitted by a downhole tool deployed in a wellbore in the drilling area.Type: ApplicationFiled: July 23, 2019Publication date: November 14, 2019Inventors: Luis Eduardo DePavia, Gaelle Jannin, Jiuping Chen
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Patent number: 10401528Abstract: 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.Type: GrantFiled: November 25, 2015Date of Patent: September 3, 2019Assignees: SCHLUMBER TECHNOLOGY CORPORATION, SAUDI ARABIAN OIL COMPANYInventors: Nestor Cuevas, Michael Wilt, Ping Zhang, Jiuping Chen, Daniele Colombo, Gary Wayne McNeice
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Patent number: 10378337Abstract: 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.Type: GrantFiled: May 27, 2016Date of Patent: August 13, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Luis Eduardo DePavia, Gaelle Jannin, Jiuping Chen
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Publication number: 20190226328Abstract: 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.Type: ApplicationFiled: January 18, 2019Publication date: July 25, 2019Inventors: Jiuping Chen, Gaelle Jannin, Liang Sun
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Patent number: 10323510Abstract: 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.Type: GrantFiled: June 12, 2017Date of Patent: June 18, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Luis Eduardo DePavia, Dean Homan, Robert Tennent, Gaelle Jannin, Liang Sun, Jiuping Chen
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Patent number: 10227868Abstract: A method for signal communication between a well drilling instrument and the Earth's surface includes generating an electromagnetic field in an instrument disposed in drill string used to drill a wellbore. The electromagnetic field comprises encoded measurements from at least one sensor associated with the instrument. A signal is measured corresponding to an amplitude, phase or frequency of the electromagnetic field. The measurements are decoded from the measured signal. The measured signal comprises at least one of a voltage imparted across a capacitive electrode proximate ground surface and a galvanic electrode in contact with the ground surface, and a voltage imparted across two capacitive electrodes each proximate a ground surface and separated from each other by a known distance.Type: GrantFiled: November 2, 2016Date of Patent: March 12, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Luis E. DePavia, Jiuping Chen
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Patent number: 10209388Abstract: 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.Type: GrantFiled: March 24, 2014Date of Patent: February 19, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Michael Wilt, Ping Zhang, Nestor Cuevas, Jiuping Chen
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Publication number: 20180335542Abstract: A method for placement of electrodes includes determining spatial distribution of a signal caused by generating an electromagnetic field in an instrument disposed in drill string used to drill a wellbore. The electromagnetic field comprises encoded measurements from tromagnetic at least one sensor associated with the instrument. Voltages induced by noise are measured across at least one pair of spaced apart electrodes placed at a plurality of positions spaced apart from a surface location of the wellbore. A spatial distribution of noise is estimated using the measured voltages. Positions for placement of at least two electrodes are selected using the spatial distribution of signal and the spatial distribution of noise.Type: ApplicationFiled: November 3, 2016Publication date: November 22, 2018Inventors: Gaelle Jannin, Jiuping Chen, Andrew G. Brooks, David Kirk Conn, Luis Eduardo DePavia, Liang Sun, Michael W. Schwartz, Richard Hunter
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Publication number: 20180128097Abstract: 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.Type: ApplicationFiled: May 27, 2016Publication date: May 10, 2018Inventors: Luis Eduardo DePavia, Gaelle Jannin, Jiuping Chen
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Publication number: 20180003042Abstract: 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.Type: ApplicationFiled: June 12, 2017Publication date: January 4, 2018Inventors: Luis Eduardo DePavia, Dean Homan, Robert Tennent, Gaelle Jannin, Liang Sun, Jiuping Chen
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Publication number: 20170227667Abstract: A method for signal communication between a well drilling instrument and the Earth's surface includes generating an electromagnetic field in an instrument disposed in drill string used to drill a wellbore. The electromagnetic field comprises encoded measurements from at least one sensor associated with the instrument. A signal is measured corresponding to an amplitude, phase or frequency of the electromagnetic field. The measurements are decoded from the measured signal. The measured signal comprises at least one of a voltage imparted across a capacitive electrode proximate ground surface and a galvanic electrode in contact with the ground surface, and a voltage imparted across two capacitive electrodes each proximate a ground surface and separated from each other by a known distance.Type: ApplicationFiled: November 2, 2016Publication date: August 10, 2017Inventors: Luis E. DePavia, Jiuping Chen
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Publication number: 20170146681Abstract: 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.Type: ApplicationFiled: November 25, 2015Publication date: May 25, 2017Inventors: Nestor Cuevas, Michael Wilt, Ping Zhang, Jiuping Chen
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Publication number: 20160291192Abstract: Various implementations described herein are directed to a method of performing an electromagnetic survey operation. The method may include measuring an electric field of a subsurface area using sensors in a well disposed within the subsurface area. The method may include computing a first current density by multiplying the electric field with a measured electric resistivity in the well. The method may include creating a resistivity model of the subsurface area. The method may include running a simulation on the resistivity model to create a second current density. The method may include calculating a misfit by comparing the first current density to the second current density. The method may also include adjusting the resistivity model based on the misfit.Type: ApplicationFiled: November 25, 2014Publication date: October 6, 2016Inventors: Nestor CUEVAS, Michael WILT, Ping ZHANG, Jiuping CHEN