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公开(公告)号：US20230221236A1
公开(公告)日：2023-07-13
申请号：US17999990
申请日：2021-06-28
Applicant: SHELL OIL COMPANY
Inventor： Nishank SAXENA , Amie Marie HOWS , John Justin FREEMAN , John Justin FREEMAN , Matthias APPEL , Ronny HOFMANN , Bochao ZHAO
IPC: G01N15/08 , G01N23/046 , G01N23/083 , G01N33/24 , G06T7/11 , G06T7/00
CPC classification number: G01N15/088 , G01N23/046 , G01N23/083 , G01N33/24 , G06T7/11 , G06T7/0002 , G01N2015/0846 , G01N2223/401 , G01N2223/616 , G01N2223/649 , G06T2207/10081 , G06T2207/30181 , G06T2200/04 , G06T2207/20081
Abstract: The present invention provides a method for estimating hydrocarbon saturation of a hydrocarbon-bearing rock from a measurement for an electrical property a resistivity log and a rock image. The image is segmented to represent either a pore space or solid material in the rock. An image porosity is estimated from the segmented image, and a corrected porosity is determined to account for the sub-resolution porosity missing in the image of the rock. A corrected saturation exponent of the rock is determined from the image porosity and the corrected porosity and is used to estimate the hydrocarbon saturation. A backpropagation-enabled trained model can be used to segment the image. A backpropagation-enabled method can be used to estimate the hydrocarbon saturation using an image selected from a series of 2D projection images, 3D reconstructed images and combinations thereof.
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公开(公告)号：US20240044768A2
公开(公告)日：2024-02-08
申请号：US17999990
申请日：2021-06-28
Applicant: SHELL OIL COMPANY
Inventor： Nishank SAXENA , Faruk ALPAK , Amie HOWS , John FREEMAN , Matthias APPEL , Ronny HOFMANN , Bochao ZHAO
IPC: G01N15/08 , G01N23/046 , G01N23/083 , G01N33/24 , G06T7/11 , G06T7/00
CPC classification number: G01N15/088 , G01N23/046 , G01N23/083 , G01N33/24 , G06T7/11 , G06T7/0002 , G01N2015/0846 , G01N2223/401 , G01N2223/616 , G01N2223/649 , G06T2207/10081 , G06T2207/30181 , G06T2200/04 , G06T2207/20081
Abstract: The present invention provides a method for estimating hydrocarbon saturation of a hydrocarbon-bearing rock from a measurement for an electrical property a resistivity log and a rock image. The image is segmented to represent either a pore space or solid material in the rock. An image porosity is estimated from the segmented image, and a corrected porosity is determined to account for the sub-resolution porosity missing in the image of the rock. A corrected saturation exponent of the rock is determined from the image porosity and the corrected porosity and is used to estimate the hydrocarbon saturation. A backpropagation-enabled trained model can be used to segment the image. A backpropagation-enabled method can be used to estimate the hydrocarbon saturation using an image selected from a series of 2D projection images, 3D reconstructed images and combinations thereof.
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公开(公告)号：US20230137288A1
公开(公告)日：2023-05-04
申请号：US17912318
申请日：2021-04-21
Applicant: SHELL OIL COMPANY
Inventor： Nishank SAXENA , Faruk Ömer ALPAK , Amie Marie HOWS , John Justin FREEMAN , Bochao ZHAO
Abstract: The present invention provides a method for estimating fluid saturation of a hydrocarbon-bearing rock from a rock image. The image is segmented to represent either a pore space or solid material in the rock. An image pore volume is estimated from the segmented image, and a corrected pore volume is determined to account for the sub-resolution pore volume missing in the image of the rock. An image-derived wetting fluid saturation of the rock is estimated using a direct flow simulation on the rock image and corrected for the corrected pore volume. A backpropagation-enabled trained model can be used to segment the image. A backpropagation-enabled method can be used to estimate the fluid saturation using an image selected from a series of 2D projection images, 3D reconstructed images and combinations thereof.
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