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公开(公告)号：US20230161068A1
公开(公告)日：2023-05-25
申请号：US17995319
申请日：2021-04-06
Applicant: Schlumberger Technology Corporation
Inventor： Isabelle Dubourg , Emmanuel Legendre , Fabrice Mege , Rina Baba
IPC: G01V3/28 , E21B47/00 , E21B47/085
CPC classification number: G01V3/28 , E21B47/006 , E21B47/085
Abstract: Methods and systems pertaining to a processing system and a downhole logging tool for investigating nested tubulars in a borehole. The downhole logging tool includes a transmitter coil for emitting a broadband excitation signal including one or more step excitations. The downhole logging tool also includes receiver coils including at least two receiver coils spaced apart from the transmitter coil at respective first and second distances from the transmitter, the first and second distances being distinct from each other, and each receiver coil being able to receive a response signal resulting from the excitation signal. The downhole logging tool also includes an acquisition system for recording the excitation signal and the response signal of each receiver coil over time. The processing system derives information indicative of variations in individual thicknesses of the nested casing tubulars based on variations of the response signals over time.
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公开(公告)号：US10386527B2
公开(公告)日：2019-08-20
申请号：US15526079
申请日：2015-11-23
Applicant: Schlumberger Technology Corporation
Inventor： Henri Budan , Alexandre Abellan , Sofiane Ellouz , Emmanuel Legendre
IPC: G01V3/24
Abstract: The present disclosure introduces an apparatus for downhole measurement of a formation resistivity. The apparatus includes a probe having a button electrode, a first guard electrode insulated from the button electrode, a second guard electrode insulated from the first guard electrode, and a return electrode positioned external to the second guard electrode. The apparatus also includes an electrical source for setting a voltage drop between the second guard electrode and the return electrode, a first impedance (RBOG) electrically coupled between the button electrode and the second guard electrode, and a second impedance (RIGOG) electrically coupled between the first guard electrode and the second guard electrode.
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3.发明授权公开(公告)号：US09476857B2
公开(公告)日：2016-10-25
申请号：US14590921
申请日：2015-01-06
Applicant: Schlumberger Technology Corporation
Inventor： Emmanuel Legendre , Thilo M Brill , Richard A. Rosthal , Gerald N. Minerbo
CPC classification number: G01N27/902 , E21B47/082 , E21B49/003 , G01B7/10 , G01N27/9046 , G01N27/9073 , G01N27/9086
Abstract: The apparatus employs the remote field eddy-current (RFEC) inspection technique to electromagnetically measure physical parameters of a metallic pipe. RFEC devices inserted into and displaced along a cylindrical pipes may be used to measure the ratio of pipe thickness to electromagnetic skin-depth and thus allow for the non-invasive detection of flaws or metal loss. Typically these RFEC thickness measurements exhibit a so-called double-indication of flaws, an undesired artifact due to a double-peaked geometrical sensitivity function of the device.The method describes a means by which this double indication artifact may be removed by an appropriate processing of RFEC measurements performed by an apparatus specifically designed for this purpose. The invention is particularly well designed for applications in the oilfield industry.
Abstract translation: 该方法描述了通过由专门设计用于该目的的设备执行的RFEC测量的适当处理可以去除该双指示伪像的手段。 本发明特别适用于油田工业的应用。
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4.发明授权公开(公告)号：US09465131B2
公开(公告)日：2016-10-11
申请号：US14510058
申请日：2014-10-08
Applicant: Schlumberger Technology Corporation
Inventor： Barbara Anderson , Thomas D. Barber , Emmanuel Legendre , Martin G. Luling , Pabitra Sen , Reza Taherian
Abstract: Techniques involve determining the frequency-dependent dielectric permittivity spectrum of a rock sample. Determining the frequency-dependent dielectric permittivity may involve defining a series of electromagnetic measurement data having at least a measurement at a frequency from which a substantially frequency-independent value of dielectric permittivity ∈∞ can be obtained. The electromagnetic measurement data also includes measurements at different frequencies from which values for frequency-dependent dielectric permittivity ∈rock (f) can be obtained. Using these measurements, the frequency-dependent spectrum of the sample may be determined.
Abstract translation: 技术涉及确定岩石样品的频率相关介电常数谱。 确定频率相关的介电常数可以包括定义一系列电磁测量数据，该电磁测量数据至少具有可以获得基本上与频率无关的介电常数ζ值的频率的测量值。 电磁测量数据还包括在不同频率处的测量，从中可以获得频率相关介电常数εrock（f）的值。 使用这些测量，可以确定样品的频率相关光谱。
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公开(公告)号：US20170227666A1
公开(公告)日：2017-08-10
申请号：US15502929
申请日：2015-08-06
Applicant: Schlumberger Technology Corporation
Inventor： Emmanuel Legendre , Alexandre Abellan
Abstract: Apparatus and methods operable to determine a resistivity of a subterranean formation surrounding a wellbore. One such method includes using an apparent impedance function depending on a frequency variable and a plurality of unknown parameters, at least one of the unknown parameters depending on a formation impedance of the subterranean formation. The method also includes applying a voltage, at each of a plurality of frequency values, between electrodes of a resistivity tool that is disposed in the wellbore. The method also includes measuring, across the electrodes, a plurality of apparent impedance values, each corresponding to a different one of the frequency values. The method still further includes determining the unknown parameters based on the frequency values and the apparent impedance values, and estimating the formation resistivity based on an expression that includes at least one of the unknown parameters.
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Patent Agency Ranking
公开(公告)号：US20150233234A1
公开(公告)日：2015-08-20
申请号：US14404473
申请日：2013-05-30
Applicant: Schlumberger Technology Corporation
Inventor： Gaelle Jannin , Emmanuel Legendre , Edward Nichols
CPC classification number: E21B47/102 , E21B43/32 , E21B49/087 , E21B2049/085 , G01V3/20 , G01V3/34
Abstract: A disclosed example method involves receiving a first signal transmitted into a reservoir from a production installation in a formation at a wellsite, and determining an apparent resistance of the reservoir based on the first signal. A distance between a fluid extraction tool and a fluid distribution is determined based on the apparent resistance.
Abstract translation: 公开的示例性方法包括从在井场的地层中的生产设备接收从储存器传送的第一信号，以及基于第一信号确定储层的表观电阻。 基于表观电阻确定流体提取工具与流体分布之间的距离。
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7.发明申请Method and Apparatus for Removal of The Double Indication of Defects in Remote Eddy Current Inspection of Pipes 审中-公开用于去除远程涡流检测管道缺陷的双重指示的方法和装置公开(公告)号：US20150127274A1
公开(公告)日：2015-05-07
申请号：US14590921
申请日：2015-01-06
Applicant: Schlumberger Technology Corporation
Inventor： Emmanuel Legendre , Thilo M. Brill , Richard A. Rosthal , Gerald N. Minerbo
CPC classification number: G01N27/902 , E21B47/082 , E21B49/003 , G01B7/10 , G01N27/9046 , G01N27/9073 , G01N27/9086
Abstract: The apparatus employs the remote field eddy-current (RFEC) inspection technique to electromagnetically measure physical parameters of a metallic pipe. RFEC devices inserted into and displaced along a cylindrical pipes may be used to measure the ratio of pipe thickness to electromagnetic skin-depth and thus allow for the non-invasive detection of flaws or metal loss. Typically these RFEC thickness measurements exhibit a so-called double-indication of flaws, an undesired artifact due to a double-peaked geometrical sensitivity function of the device.The method describes a means by which this double indication artifact may be removed by an appropriate processing of RFEC measurements performed by an apparatus specifically designed for this purpose. The invention is particularly well designed for applications in the oilfield industry.
Abstract translation: 该装置采用远场涡流（RFEC）检测技术，电磁测量金属管道的物理参数。 可以使用沿圆柱形管插入和移位的RFEC装置来测量管厚度与电磁皮肤深度的比率，从而允许非侵入性检测缺陷或金属损失。 通常，这些RFEC厚度测量表现出所谓的缺陷双重指示，这是由于器件的双峰几何灵敏度功能引起的不期望的伪像。 该方法描述了通过由专门设计用于该目的的设备执行的RFEC测量的适当处理可以去除该双指示伪像的手段。 本发明特别适用于油田工业的应用。
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8.发明申请公开(公告)号：US20150025807A1
公开(公告)日：2015-01-22
申请号：US14510058
申请日：2014-10-08
Applicant: Schlumberger Technology Corporation
Inventor： Barbara Anderson , Thomas D. Barber , Emmanuel Legendre , Martin G. Luling , Pabitra Sen , Reza Taherian
Abstract: Techniques involve determining the frequency-dependent dielectric permittivity spectrum of a rock sample. Determining the frequency-dependent dielectric permittivity may involve defining a series of electromagnetic measurement data having at least a measurement at a frequency from which a substantially frequency-independent value of dielectric permittivity ε∞ can be obtained. The electromagnetic measurement data also includes measurements at different frequencies from which values for frequency-dependent dielectric permittivity εrock (f) can be obtained. Using these measurements, the frequency-dependent spectrum of the sample may be determined.
Abstract translation: 技术涉及确定岩石样品的频率相关介电常数谱。 确定频率相关的介电常数可以包括定义一系列电磁测量数据，该电磁测量数据至少具有可以从其获得基本上与频率无关的介电常数值和等级的频率的测量值。 电磁测量数据还包括在不同频率的测量，从中可以获得频率相关的介电常数和岩石值（f）。 使用这些测量，可以确定样品的频率相关光谱。
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公开(公告)号：US10851644B2
公开(公告)日：2020-12-01
申请号：US16061165
申请日：2016-12-14
Applicant: Schlumberger Technology Corporation
Inventor： Emmanuel Legendre , Alexandre Abellan , Mathieu Tarrius
IPC: E21B47/09 , E21B47/095
Abstract: A method includes emitting, with one or more sensors of a downhole tool disposed in a borehole, an excitation signal. The method also includes detecting, with the one or more sensors, a returned signal resulting from an interaction of the excitation signal with the borehole. The method further includes estimating a noise of the returned signal. The method also includes quantifying a probability that the estimated noise is not a white noise of the borehole. The method further includes identifying drill cuttings in a predetermined location of the borehole based on said quantification.
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公开(公告)号：US10415951B2
公开(公告)日：2019-09-17
申请号：US14366682
申请日：2012-12-20
Applicant: Schlumberger Technology Corporation
Inventor： Emmanuel Legendre
Abstract: Systems and methods for estimating standoff and/or caliper in a wellbore for oil-based mud drilling are provided. The systems include a sensor having a primary electrode and at least two secondary electrodes, and an electronics subsystem having a controller and a processor for driving the system and correlating current measurements with standoff and/or caliper. The electrodes are positioned relative to one another such that there is a distinct flow of current between the primary electrode and each secondary electrode. In operation, a single excitation frequency is applied to the primary electrode and a simultaneous measurement of current flowing between the primary electrode and each secondary electrode is obtained. Standoff is estimated from the measurements. The estimations can be independent of formation properties when an appropriate excitation frequency is used.
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