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.

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.

公开(公告)号：US20220099551A1

公开(公告)日：2022-03-31

申请号：US17414421

申请日：2019-12-16

Applicant: SHELL OIL COMPANY

Inventor： Nishank SAXENA ,  Amie Marie HOWS ,  Ronny HOFMANN ,  Matthias APPEL ,  John Justin FREEMAN

IPC: G01N15/08 ,  G01N33/24 ,  G01N23/046 ,  G01N23/083 ,  G06T7/11

Abstract: The present invention provides a method for estimating the permeability of rock from a digital image of the rock. A three-dimensional image of a rock is obtained and segmented, and an image permeability is determined from the segmented image of the rock. Permeability correction factors are obtained from the segmented image and from a non-wetting liquid capillary pressure curve derived from the segmented image, and the permeability correction parameters are applied to the image permeability to obtain a corrected image permeability of the rock.

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

IPC: G06T7/62 ,  G01N33/24 ,  G01N15/08 ,  G06T7/11 ,  G06N3/084

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.

公开(公告)号：US20220404330A1

公开(公告)日：2022-12-22

申请号：US17775720

申请日：2020-12-10

Applicant: SHELL OIL COMPANY

Inventor： Nishank SAXENA ,  Amie Marie HOWS ,  Matthias APPEL ,  John Justin FREEMAN

IPC: G01N33/24 ,  G01N15/08 ,  G06T7/00

Abstract: The present invention provides a method for estimating hydrocarbon saturation of a hydrocarbon-bearing rock from 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 cementation 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.