Patents by Inventor Luis Eduardo DePavia
Luis Eduardo DePavia 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: 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: 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: 10844709Abstract: A method for configuring transmission signals is disclosed. The method includes receiving a signal from a downhole tool in a wellbore. The signal may include a telemetry portion and a noise portion. The method also includes reproducing the telemetry portion based at least partially on the signal. Further, the method includes subtracting the telemetry portion from the signal. The method includes estimating, based at least partially on the subtraction, the noise portion of the signal. The method also includes altering a transmission configuration of the downhole tool based at least partially on the noise portion of the signal.Type: GrantFiled: August 19, 2019Date of Patent: November 24, 2020Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Julius Kusuma, Arnaud Jarrot, Adeel Mukhtar, Liang Sun, Robert W. Tennent, David Kirk Conn, Luis Eduardo DePavia
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Publication number: 20190376384Abstract: A method for configuring transmission signals is disclosed. The method includes receiving a signal from a downhole tool in a wellbore. The signal may include a telemetry portion and a noise portion. The method also includes reproducing the telemetry portion based at least partially on the signal. Further, the method includes subtracting the telemetry portion from the signal. The method includes estimating, based at least partially on the subtraction, the noise portion of the signal. The method also includes altering a transmission configuration of the downhole tool based at least partially on the noise portion of the signal.Type: ApplicationFiled: August 19, 2019Publication date: December 12, 2019Inventors: Julius Kusuma, Arnaud Jarrot, Adeel Mukhtar, Liang Sun, Robert W. Tennent, David Kirk Conn, Luis Eduardo DePavia
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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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Patent number: 10487645Abstract: A saver sub includes a hollow, tubular body having an upper portion and a lower portion. The upper portion is coupled to a kelly or a top drive, and the lower portion is coupled to a drill string. An insulation layer is positioned between the upper portion and the lower portion.Type: GrantFiled: June 30, 2016Date of Patent: November 26, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Luis Eduardo DePavia, David Kirk Conn
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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: 10422218Abstract: A method for configuring transmission signals is disclosed. The method includes receiving a signal from a downhole tool in a wellbore. The signal may include a telemetry portion and a noise portion. The method also includes reproducing the telemetry portion based at least partially on the signal. Further, the method includes subtracting the telemetry portion from the signal. The method includes estimating, based at least partially on the subtraction, the noise portion of the signal. The method also includes altering a transmission configuration of the downhole tool based at least partially on the noise portion of the signal.Type: GrantFiled: October 18, 2018Date of Patent: September 24, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Julius Kusuma, Arnaud Jarrot, Adeel Mukhtar, Liang Sun, Robert W. Tennent, David Kirk Conn, Luis Eduardo DePavia
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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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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: 10274639Abstract: A method for improving a quality of data received from a downhole tool in a wellbore includes receiving a first block of data from a downhole tool in a wellbore. The first block of data represents a first measurement captured by the downhole tool during a first period of time. At least a portion of a bit budget for a second block of data is allocated to the first block of data to produce an updated first block of data. The method also includes receiving the second block of data from the downhole tool in the wellbore. The second block of data represents a second measurement captured by the downhole tool during a second period of time.Type: GrantFiled: June 12, 2017Date of Patent: April 30, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Andriy Gelman, Julius Kusuma, Luis Eduardo DePavia, Arnaud Croux
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Publication number: 20190048714Abstract: A method for configuring transmission signals is disclosed. The method includes receiving a signal from a downhole tool in a wellbore. The signal may include a telemetry portion and a noise portion. The method also includes reproducing the telemetry portion based at least partially on the signal. Further, the method includes subtracting the telemetry portion from the signal. The method includes estimating, based at least partially on the subtraction, the noise portion of the signal. The method also includes altering a transmission configuration of the downhole tool based at least partially on the noise portion of the signal.Type: ApplicationFiled: October 18, 2018Publication date: February 14, 2019Inventors: Julius Kusuma, Arnaud Jarrot, Adeel Mukhtar, Liang Sun, Robert W. Tennent, David Kirk Conn, Luis Eduardo DePavia
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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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Patent number: 10113418Abstract: A method for configuring transmission signals is disclosed. The method includes receiving a signal from a downhole tool in a wellbore. The signal may include a telemetry portion and a noise portion. The method also includes reproducing the telemetry portion based at least partially on the signal. Further, the method includes subtracting the telemetry portion from the signal. The method includes estimating, based at least partially on the subtraction, the noise portion of the signal. The method also includes altering a transmission configuration of the downhole tool based at least partially on the noise portion of the signal.Type: GrantFiled: June 15, 2017Date of Patent: October 30, 2018Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Julius Kusuma, Arnaud Jarrot, Adeel Mukhtar, Liang Sun, Robert W. Tennent, David Kirk Conn, Luis Eduardo DePavia
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Patent number: 10082019Abstract: A method for signal communication between a well drilling instrument and the Earths surface includes generating an electromagnetic field in an instrument disposed in drill string used to drill a wellbore. The electromagnetic field includes encoded measurements from at least one sensor associated with the instrument. A signal corresponding to an amplitude and/or phase of the electromagnetic field is measured between the drill string and a surface electrode when the drill string is substantially electrically isolated from a well casing. A signal corresponding to the amplitude and/or phase is measured between the casing and a surface electrode when the casing and the drill string are in electrical contact with each other.Type: GrantFiled: December 17, 2015Date of Patent: September 25, 2018Inventors: Guozhong Gao, Luis Eduardo DePavia, Gaelle Jannin
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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: 20180003044Abstract: A method for configuring transmission signals is disclosed. The method includes receiving a signal from a downhole tool in a wellbore. The signal may include a telemetry portion and a noise portion. The method also includes reproducing the telemetry portion based at least partially on the signal. Further, the method includes subtracting the telemetry portion from the signal. The method includes estimating, based at least partially on the subtraction, the noise portion of the signal. The method also includes altering a transmission configuration of the downhole tool based at least partially on the noise portion of the signal.Type: ApplicationFiled: June 15, 2017Publication date: January 4, 2018Inventors: Julius Kusuma, Arnaud Jarrot, Adeel Mukhtar, Liang Sun, Robert W. Tennent, David Kirk Conn, Luis Eduardo DePavia
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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: 20180003043Abstract: A method for improving a quality of data received from a downhole tool in a wellbore includes receiving a first block of data from a downhole tool in a wellbore. The first block of data represents a first measurement captured by the downhole tool during a first period of time. At least a portion of a bit budget for a second block of data is allocated to the first block of data to produce an updated first block of data. The method also includes receiving the second block of data from the downhole tool in the wellbore. The second block of data represents a second measurement captured by the downhole tool during a second period of time.Type: ApplicationFiled: June 12, 2017Publication date: January 4, 2018Inventors: Andriy Gelman, Julius Kusuma, Luis Eduardo DePavia, Arnaud Croux