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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：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：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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