公开(公告)号：US11879825B2

公开(公告)日：2024-01-23

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 ,  G06T7/11 ,  G01N23/046 ,  G01N23/083 ,  G01N33/24

CPC classification number: G01N15/08 ,  G01N23/046 ,  G01N23/083 ,  G01N33/24 ,  G06T7/11 ,  G01N2015/0846 ,  G01N2223/04 ,  G01N2223/419 ,  G01N2223/616 ,  G06T2207/10081 ,  G06T2207/20081 ,  G06T2207/30181

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：US11119025B2

公开(公告)日：2021-09-14

申请号：US16567197

申请日：2019-09-11

Applicant: SHELL OIL COMPANY

Inventor： Nishank Saxena ,  Amie Marie Hows ,  Ronny Hofmann ,  Matthias Appel ,  John Justin Freeman

IPC: G06K9/00 ,  G01N15/08 ,  G01N23/046 ,  G06T7/11 ,  G06T7/62

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

公开(公告)号：US09909409B2

公开(公告)日：2018-03-06

申请号：US14501363

申请日：2014-09-30

Applicant: Shell Oil Company

Inventor： Lubomyr Taras Bryndzia ,  Saad Jamil Saleh ,  Calum Ian Macaulay ,  Neil Robert Braunsdorf ,  Theodericus Johannes Henricus Smit ,  Ronny Hofmann

IPC: E21B47/06 ,  G01N33/24

CPC classification number: E21B47/06 ,  G01N33/241

Abstract: A method of determining the in situ pressure of a light hydrocarbon in a shale source rock formation comprising: providing an inclusion comprising the light hydrocarbon trapped within the inclusion; using Raman spectroscopy to determine the density and composition of the light hydrocarbon trapped within the inclusion; and calculating a pressure of the light hydrocarbon in the shale source rock formation based upon the density and composition of the light hydrocarbon trapped within the inclusion.

公开(公告)号：US09684092B2

公开(公告)日：2017-06-20

申请号：US14501374

申请日：2014-09-30

Applicant: Shell Oil Company

Inventor： Lubomyr Taras Bryndzia ,  Saad Jamil Saleh ,  Calum Ian Macaulay ,  Neil Robert Braunsdorf ,  Theodericus Johannes Henricus Smit ,  Ronny Hofmann ,  Brian Harvey Hoffe ,  Ezequiel Francisco Gonzalez San Miguel

IPC: G01J3/44 ,  G01V3/30 ,  G01V8/02 ,  G01V11/00 ,  G01N21/65 ,  E21B47/06 ,  G01V3/38

CPC classification number: G01V3/30 ,  E21B47/06 ,  G01N21/65 ,  G01V3/38 ,  G01V8/02 ,  G01V11/00

Abstract: A method of evaluating a shale source rock formation comprising: determining in situ partial pressures of a light hydrocarbon utilizing a downhole Raman tool and producing a map of spatial and vertical variations of the in situ partial pressures of the light hydrocarbon in the shale source rock formation.