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公开(公告)号：US20180010996A1
公开(公告)日：2018-01-11
申请号：US15545720
申请日：2016-01-26
Applicant: Schlumberger Technology Corporation
Inventor： Olivier Marche , Andrey Vladimirovich Kazak , Keith Pinto
IPC: G01N15/08
CPC classification number: G01N15/0886 , G01N15/0826 , G01N2015/0813 , G01N2015/0853
Abstract: A method can include receiving porosimetry data for a range of pressures that spans a transition zone defined at least in part by a high-pressure end of a first pressure zone and a low-pressure end of a second pressure zone; detecting at least one artifact in the transition zone; computing accuracy information for the highpressure end of a first pressure zone and the low-pressure end of a second pressure zone; computing a pressure-volume adjustment based at least in part on the accuracy information; and outputting a pressure-volume relationship in the transition zone based at least in part on the pressure-volume adjustment.
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公开(公告)号：US10787902B2
公开(公告)日：2020-09-29
申请号：US15577326
申请日：2016-05-31
Applicant: Schlumberger Technology Corporation
Inventor： Sylvain Wlodarczyk , Keith Pinto , Olivier Marché , Akshat Gupta
Abstract: A system and method for correcting capillary pressure curves includes creating a capillary pressure curve using multiple linked hyperbolic tangents, determining a closure correction pressure cutoff of the capillary pressure curve, and correcting the capillary pressure curve. The correction may include normalizing the capillary pressure curve and extrapolating the capillary pressure curve.
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公开(公告)号：US20180119524A1
公开(公告)日：2018-05-03
申请号：US15572786
申请日：2016-06-24
Applicant: Schlumberger Technology Corporation
Inventor： Sylvain Wlodarczyk , Keith Pinto , Olivier Marche , Akshat Gupta
CPC classification number: E21B41/0092 , E21B47/06 , E21B49/00 , G06F17/13
Abstract: A method for modelling saturation in a reservoir, comprising: obtaining capillary pressure data representing capillary pressure in the reservoir; obtaining permeability data representing permeability in the reservoir; determining a number of pore throats represented by the capillary pressure data; creating hyperbolic tangents based on the capillary pressure data equal in number to the number of pore throats; combining hyperbolic tangents to create a curve to fit the capillary pressure data and to define hyperbolic tangent parameters; combining at least one of the hyperbolic tangent parameters with the permeability data to define a saturation height function; modelling a saturation in the reservoir using the saturation height function; and displaying the saturation model based on the saturation height function. The determination of the number of pore throats may comprise creating an initial capillary pressure curve using a predetermined number of multiple linked hyperbolic tangents, determining a first derivative of the capillary pressure curve, and determining a number of local minima in the capillary pressure curve.
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公开(公告)号：US20180023389A1
公开(公告)日：2018-01-25
申请号：US15546007
申请日：2016-03-03
Applicant: Schlumberger Technology Corporation
Inventor： Keith Pinto , Olivier Marché
CPC classification number: E21B49/00 , E21B47/06 , E21B49/005 , E21B49/008 , E21B49/08 , E21B49/087 , G01V9/00
Abstract: A method, apparatus, and program product for determining a formation pressure for a reservoir. Measurement data for a pretest of a formation of the reservoir is received. The measurement data is analyzed to determine a last-read event and a corresponding last-read pressure. Derivative data for flow regime identification is determined based at least in part on the measurement data. The derivative data is analyzed to determine a pressure derivative response, and a formation pressure is determined based at least in part on the last-read event, the last-read pressure, and the pressure derivative response.
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Patent Agency Ranking
公开(公告)号：US11066905B2
公开(公告)日：2021-07-20
申请号：US15572786
申请日：2016-06-24
Applicant: Schlumberger Technology Corporation
Inventor： Sylvain Wlodarczyk , Keith Pinto , Olivier Marche , Akshat Gupta
Abstract: A method for modelling saturation in a reservoir, comprising: obtaining capillary pressure data representing capillary pressure in the reservoir; obtaining permeability data representing permeability in the reservoir; determining a number of pore throats represented by the capillary pressure data; creating hyperbolic tangents based on the capillary pressure data equal in number to the number of pore throats; combining hyperbolic tangents to create a curve to fit the capillary pressure data and to define hyperbolic tangent parameters; combining at least one of the hyperbolic tangent parameters with the permeability data to define a saturation height function; modelling a saturation in the reservoir using the saturation height function; and displaying the saturation model based on the saturation height function. The determination of the number of pore throats may comprise creating an initial capillary pressure curve using a predetermined number of multiple linked hyperbolic tangents, determining a first derivative of the capillary pressure curve, and determining a number of local minima in the capillary pressure curve.
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公开(公告)号：US10655461B2
公开(公告)日：2020-05-19
申请号：US15546007
申请日：2016-03-03
Applicant: Schlumberger Technology Corporation
Inventor： Keith Pinto , Olivier Marché
Abstract: A method, apparatus, and program product for determining a formation pressure for a reservoir. Measurement data for a pretest of a formation of the reservoir is received. The measurement data is analyzed to determine a last-read event and a corresponding last-read pressure. Derivative data for flow regime identification is determined based at least in part on the measurement data. The derivative data is analyzed to determine a pressure derivative response, and a formation pressure is determined based at least in part on the last-read event, the last-read pressure, and the pressure derivative response.
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公开(公告)号：US10371619B2
公开(公告)日：2019-08-06
申请号：US15545720
申请日：2016-01-26
Applicant: Schlumberger Technology Corporation
Inventor： Olivier Marche , Andrey Vladimirovich Kazak , Keith Pinto
Abstract: A method can include receiving porosimetry data for a range of pressures that spans a transition zone defined at least in part by a high-pressure end of a first pressure zone and a low-pressure end of a second pressure zone; detecting at least one artifact in the transition zone; computing accuracy information for the high-pressure end of the first pressure zone and the low-pressure end of the second pressure zone; computing a pressure-volume adjustment based at least in part on the accuracy information; and outputting a pressure-volume relationship in the transition zone based at least in part on the pressure-volume adjustment.
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公开(公告)号：US20180163533A1
公开(公告)日：2018-06-14
申请号：US15577326
申请日：2016-05-31
Applicant: Schlumberger Technology Corporation
Inventor： Sylvain Wlodarczyk , Keith Pinto , Olivier Marché , Akshat Gupta
CPC classification number: E21B49/008 , E21B47/06 , E21B49/00 , G01V1/40 , G01V99/00
Abstract: A system and method for correcting capillary pressure curves includes creating a capillary pressure curve using multiple linked hyperbolic tangents, determining a closure correction pressure cutoff of the capillary pressure curve, and correcting the capillary pressure curve. The correction may include normalizing the capillary pressure curve and extrapolating the capillary pressure curve.
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公开(公告)号：US20180119523A1
公开(公告)日：2018-05-03
申请号：US15564732
申请日：2016-04-07
Applicant: Schlumberger Technology Corporation
Inventor： Sylvain Wlodarczyk , Keith Pinto , Olivier Marche
CPC classification number: E21B41/0092 , E21B47/06 , E21B49/00 , G06F17/5009 , G06F2217/16
Abstract: A method and system for modeling saturation in a reservoir that includes obtaining capillary pressure data representing capillary pressure in a reservoir, obtaining permeability data representing permeability in the reservoir, determining a number of pore throats represented by the capillary pressure data, creating a set of hyperbolic tangents equal in number to the number of pore throats, combining the set of hyperbolic tangents to create a curve to fit the capillary pressure data and to define a set of hyperbolic tangent parameters, combining at least one of the hyperbolic tangent parameters with the permeability data to define a saturation height function, modeling USER a saturation in the reservoir using the saturation height function, and displaying the saturation model based on the saturation height function.
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