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Patent Agency Ranking
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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公开(公告)号：US10041893B2
公开(公告)日：2018-08-07
申请号：US14581307
申请日：2014-12-23
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Marcus Hofheins Donaldson , Denise Freed , Martin Hurlimann , Yi-Qiao Song , Lalitha Venkataramanan
Abstract: Methods are provided for identifying one or more transition characteristics in a hydrocarbon fluid such as asphaltene onset pressure (AOP), bubble point or dew point. A transition characteristic is determined by subjecting the fluid to different pressures or temperatures, conducting NMR tests at the different pressures or temperatures to obtain signals, processing the signals to obtain values of a function of an NMR parameter as a function of pressure or temperature, and analyzing the values to find a discontinuity that identifies the transition characteristic. In embodiments, the NMR parameters may include at least one of a relaxation parameter such as T2 or a T1-T2 ratio, a diffusion parameter and an initial magnetization parameter. In embodiments, dual linear fitting, Bayesian change point detection algorithms, and instantaneous slope analysis may be utilized to analyze the values in order to find a discontinuity.
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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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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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