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公开(公告)号：US20220082014A1
公开(公告)日：2022-03-17
申请号：US17310988
申请日：2020-03-10
Applicant: Schlumberger Technology Corporation
Inventor： Chang-Yu Hou , Lin Liang , Lalitha Venkataramanan , Harish Baban Datir , Austin Boyd , Vasileios-Marios Gkortsas
Abstract: Methods and systems are provided characterizing a formation traversed by a wellbore, wherein the formation includes at least a flushed zone and an uninvaded zone, which involve obtaining well log data based on plurality of different well log measurements of the formation at multiple depths in the wellbore. The well log data is used to a computational model that solves for a set of petrophysical parameters that characterize a portion of the formation corresponding to the multiple depths in the wellbore, wherein the set of petrophysical parameters include a cementation exponent, a saturation exponent, and a flushed zone water resistivity. The solved-for set of petrophysical parameters can be used to determine a value of water saturation of the uninvaded zone for the portion of the formation corresponding to the multiple depths in the wellbore.
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公开(公告)号：US10451763B2
公开(公告)日：2019-10-22
申请号：US15336494
申请日：2016-10-27
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Nikita Valentinovich Seleznev , Chang-Yu Hou , Denise Freed , Ridvan Akkurt
Abstract: Methods and systems are provided for investigating a rock sample, in which wideband electromagnetic response data are obtained and processed by inversion in order to determine values for a plurality of parameters of the rock sample. The wideband electromagnetic response data is derived from electromagnetic measurements of the rock sample at frequencies that fall within a wideband of frequencies, wherein the wideband of frequencies includes a low frequency sub-band that is sensitive to conductivity of the rock sample and a high frequency sub-band that is sensitive to the permittivity of the rock sample. In one embodiment, the inversion can employ a wideband model that accounts for two different polarization mechanisms. The wideband model can be used to describe predicted electromagnetic response of the rock sample at frequencies that fall within the wideband of frequencies.
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3.发明授权公开(公告)号：US10605951B2
公开(公告)日：2020-03-31
申请号：US14875077
申请日：2015-10-05
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Denise E. Freed , Nikita V. Seleznev , Chang-Yu Hou
Abstract: Techniques involve inverting a dielectric dispersion model based on the geometrical and electrochemical effects that affect dielectric dispersion in fluid-saturated rocks and other porous formation with formation data and measurements to obtain further formation characteristics. A workflow involves using multi-frequency dielectric measurements of the dielectric constant and the conductivity of the formation for reservoir evaluation. The workflow also involves determining formation data such as matrix permittivity, formation temperature, pressure, and porosity, etc., and inverting the formation data and the multi-frequency dielectric measurements with the dielectric dispersion model to determine formation characteristics such as volumetric fraction of water in the formation, the formation water salinity and the Cation Exchange Capacity (CEC), etc. From the CEC log, in combination with other measurements, clay typing may be performed and swelling clays may be identified.
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Patent Agency Ranking
公开(公告)号：US12291963B2
公开(公告)日：2025-05-06
申请号：US17310988
申请日：2020-03-10
Applicant: Schlumberger Technology Corporation
Inventor： Chang-Yu Hou , Lin Liang , Lalitha Venkataramanan , Harish Baban Datir , Austin Boyd , Vasileios-Marios Gkortsas
Abstract: Methods and systems are provided characterizing a formation traversed by a wellbore, wherein the formation includes at least a flushed zone and an uninvaded zone, which involve obtaining well log data based on plurality of different well log measurements of the formation at multiple depths in the wellbore. The well log data is used by a computational model that solves for a set of petrophysical parameters that characterize a portion of the formation corresponding to the multiple depths in the wellbore, wherein the set of petrophysical parameters include a cementation exponent, a saturation exponent, and a flushed zone water resistivity. The solved-for set of petrophysical parameters can be used to determine a value of water saturation of the uninvaded zone for the portion of the formation corresponding to the multiple depths in the wellbore.
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公开(公告)号：US12025765B2
公开(公告)日：2024-07-02
申请号：US17771514
申请日：2020-10-27
Applicant: Schlumberger Technology Corporation
Inventor： Dean Homan , Natalie Uschner-Arroyo , Chang-Yu Hou , Denise Freed , John Rasmus
CPC classification number: G01V3/32 , E21B49/00 , G01V3/26 , G01V3/38 , E21B2200/20
Abstract: A method for evaluating saturation of a kerogen bearing subterranean formation includes obtaining conductivity and permittivity values of the formation and providing an effective medium model relating the conductivity and the permittivity to a water filled porosity of the formation and an effective aspect ratio of graphitic kerogen particulate in the formation. The obtained conductivity and the permittivity values are input into the model which is in turn processed to compute the water filled porosity. The method may further optionally include evaluating the water filled porosity to estimate a hydrocarbon producibility of the formation.
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公开(公告)号：US20220381939A1
公开(公告)日：2022-12-01
申请号：US17771514
申请日：2020-10-27
Applicant: Schlumberger Technology Corporation
Inventor： Dean Homan , Natalie Uschner-Arroyo , Chang-Yu Hou , Denise Freed , John Rasmus
Abstract: A method for evaluating saturation of a kerogen bearing subterranean formation includes obtaining conductivity and permittivity values of the formation and providing an effective medium model relating the conductivity and the permittivity to a water filled porosity of the formation and an effective aspect ratio of graphitic kerogen particulate in the formation. The obtained conductivity and the permittivity values are input into the model which is in turn processed to compute the water filled porosity. The method may further optionally include evaluating the water filled porosity to estimate a hydrocarbon producibility of the formation.
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公开(公告)号：US20180120468A1
公开(公告)日：2018-05-03
申请号：US15336494
申请日：2016-10-27
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Nikita Valentinovich Seleznev , Chang-Yu Hou , Denise Freed , Ridvan Akkurt
CPC classification number: G01V3/20 , G01N15/088 , G01N33/24
Abstract: Methods and systems are provided for investigating a rock sample, in which wideband electromagnetic response data are obtained and processed by inversion in order to determine values for a plurality of parameters of the rock sample. The wideband electromagnetic response data is derived from electromagnetic measurements of the rock sample at frequencies that fall within a wideband of frequencies, wherein the wideband of frequencies includes a low frequency sub-band that is sensitive to conductivity of the rock sample and a high frequency sub-band that is sensitive to the permittivity of the rock sample. In one embodiment, the inversion can employ a wideband model that accounts for two different polarization mechanisms. The wideband model can be used to describe predicted electromagnetic response of the rock sample at frequencies that fall within the wideband of frequencies.
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8.发明申请Method of Determining CEC and Other Properties from Multi-Frequency Dielectric Measurements 审中-公开从多频介质测量中确定CEC和其他性能的方法公开(公告)号：US20160097876A1
公开(公告)日：2016-04-07
申请号：US14875077
申请日：2015-10-05
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Denise E. Freed , Nikita V. Seleznev , Chang-Yu Hou
CPC classification number: G01V3/38 , G01N33/241 , G01N33/2823 , G01V3/24 , G01V3/26 , G01V3/30 , G06F17/5009 , G06F2217/16
Abstract: Techniques involve inverting a dielectric dispersion model based on the geometrical and electrochemical effects that affect dielectric dispersion in fluid-saturated rocks and other porous formation with formation data and measurements to obtain further formation characteristics. A workflow involves using multi-frequency dielectric measurements of the dielectric constant and the conductivity of the formation for reservoir evaluation. The workflow also involves determining formation data such as matrix permittivity, formation temperature, pressure, and porosity, etc., and inverting the formation data and the multi-frequency dielectric measurements with the dielectric dispersion model to determine formation characteristics such as volumetric fraction of water in the formation, the formation water salinity and the Cation Exchange Capacity (CEC), etc. From the CEC log, in combination with other measurements, clay typing may be performed and swelling clays may be identified.
Abstract translation: 技术包括基于影响流体饱和岩石和其他多孔地层中的介电分散的几何和电化学效应来反转电介质分散体模型，其中具有地层数据和测量以获得进一步的地层特征。 工作流程包括使用介质常数和地层电导率进行储层评估的多频介质测量。 该工作流程还涉及确定诸如矩阵介电常数，地层温度，压力和孔隙率等的地层数据，以及用介电分散模型反演地层数据和多频介质测量值，以确定地层特征，例如水的体积分数 在形成时，地层水盐度和阳离子交换容量（CEC）等。从CEC日志，结合其他测量，可以进行粘土分类，并且可以鉴定膨胀粘土。
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