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公开(公告)号：US10323510B2
公开(公告)日：2019-06-18
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
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：US12234721B2
公开(公告)日：2025-02-25
申请号：US17660637
申请日：2022-04-26
Applicant: Schlumberger Technology Corporation
Inventor： Liang Sun , Pavel Annenkov , Robert Tennent , Andriy Gelman
IPC: E21B47/13 , H04B17/10 , H04B17/318 , H04B17/382
Abstract: A method for configuring telemetry transmission includes receiving a transmitted telemetry signal at the earth's surface. The received signal is selected and processed to compute a measured power spectral density (PSD). A theoretical PSD is computed of the transmitted signal at the known carrier frequency and processed in combination with the measured PSD to compute an attenuation factor of the transmitted signal at a plurality of frequencies.
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公开(公告)号：US09982528B2
公开(公告)日：2018-05-29
申请号：US14814133
申请日：2015-07-30
Applicant: Schlumberger Technology Corporation
Inventor： Adolfo Recio , Tamim Sawaf , Ryan Parasram , Hugues Bouvier , Robert Tennent , Scott Cook
CPC classification number: E21B47/12 , E21B44/00 , E21B47/00 , E21B47/182 , E21B49/00 , G01K1/026 , H04L27/34 , H04Q9/00
Abstract: Methods and related apparatus pertaining to downhole and surface telemetry, such as a method in which a telemetry system is provided with a communication path formed with an electrically conductive transport medium coupled across a plurality of downhole nodes. Such method includes operating on the communication path with a multi-drop system that provides telemetry to the downhole nodes in a wellbore, including employing modulation in a master-slave arrangement using binary differential phase shift keying or differential quadrature phase shift keying.
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公开(公告)号：US20200291768A1
公开(公告)日：2020-09-17
申请号：US16314165
申请日：2017-06-28
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Julius Kusuma , Robert Tennent , Arnaud Croux
Abstract: The present disclosure describes methods and systems that can be used for controlling and coordinating the transmission of electromagnetic telemetry signals from and/or to a plurality of downhole tools to minimize or reduce electromagnetic interference between the transmissions. Signal coordination control is also disclosed that allows for duplex bidirectional communication of transmissions of electromagnetic telemetry signals such that electromagnetic interference between the transmissions is minimized or reduced.
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公开(公告)号：US12084966B2
公开(公告)日：2024-09-10
申请号：US17808651
申请日：2022-06-24
Applicant: Schlumberger Technology Corporation
Inventor： Liang Sun , Pavel Annenkov , Arnaud Jarrot , David Kirk Conn , Robert Tennent , Richard Hunter
IPC: E21B47/18 , H04B11/00 , H04B17/336
CPC classification number: E21B47/18 , H04B11/00 , H04B17/336
Abstract: A method includes receiving a signal having a telemetry portion and a noise portion. The method may also include identifying one or more harmonic frequencies in the signal. The method may also include determining whether the one or more harmonic frequencies are in a predetermined frequency band. The method may also include determining whether a signal-to-noise ratio (SNR) of the signal is below a predetermined SNR threshold. The method may also include generating one or more notifications in response to the determination whether the one or more harmonic frequencies are in the predetermined frequency band and the determination whether the SNR is below the predetermined SNR threshold.
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Patent Agency Ranking
公开(公告)号：US11441418B2
公开(公告)日：2022-09-13
申请号：US16314165
申请日：2017-06-28
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Julius Kusuma , Robert Tennent , Arnaud Croux
Abstract: The present disclosure describes methods and systems that can be used for controlling and coordinating the transmission of electromagnetic telemetry signals from and/or to a plurality of downhole tools to minimize or reduce electromagnetic interference between the transmissions. Signal coordination control is also disclosed that allows for duplex bidirectional communication of transmissions of electromagnetic telemetry signals such that electromagnetic interference between the transmissions is minimized or reduced.
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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：US12110789B2
公开(公告)日：2024-10-08
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：US20220412212A1
公开(公告)日：2022-12-29
申请号：US17808651
申请日：2022-06-24
Applicant: Schlumberger Technology Corporation
Inventor： Liang Sun , Pavel Annenkov , Arnaud Jarrot , David Kirk Conn , Robert Tennent , Richard Hunter
IPC: E21B47/18 , H04B11/00 , H04B17/336
Abstract: A method includes receiving a signal having a telemetry portion and a noise portion. The method may also include identifying one or more harmonic frequencies in the signal. The method may also include determining whether the one or more harmonic frequencies are in a predetermined frequency band. The method may also include determining whether a signal-to-noise ratio (SNR) of the signal is below a predetermined SNR threshold. The method may also include generating one or more notifications in response to the determination whether the one or more harmonic frequencies are in the predetermined frequency band and the determination whether the SNR is below the predetermined SNR threshold.
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公开(公告)号：US20220341316A1
公开(公告)日：2022-10-27
申请号：US17660637
申请日：2022-04-26
Applicant: Schlumberger Technology Corporation
Inventor： Liang Sun , Pavel Annenkov , Robert Tennent , Andriy Gelman
IPC: E21B47/13 , H04B17/10 , H04B17/318 , H04B17/382
Abstract: A method for configuring telemetry transmission includes receiving a transmitted telemetry signal at the earth's surface. The received signal is selected and processed to compute a measured power spectral density (PSD). A theoretical PSD is computed of the transmitted signal at the known carrier frequency and processed in combination with the measured PSD to compute an attenuation factor of the transmitted signal at a plurality of frequencies.
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