公开(公告)号：US20240210583A1

公开(公告)日：2024-06-27

申请号：US18507295

申请日：2023-11-13

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Kelvin I. AMALOKWU ,  Brian R. CRAWFORD ,  Ripudaman MANCHANDA ,  Gauthier D. BECKER

IPC: G01V1/28 ,  G06F17/18

CPC classification number: G01V1/282 ,  G06F17/18 ,  G01V2210/6242 ,  G01V2210/667

Abstract: Methods of generating a parameter realization, for a subsurface parameter, as a function of depth within a subsurface region are disclosed herein. The methods include dividing a subsurface parameter profile for the subsurface region into a plurality of adjacent stratigraphic units. The methods also include splitting each stratigraphic unit of the plurality of adjacent stratigraphic units into a plurality of stratigraphic unit layers. The methods further include determining a layer parameter value range for each stratigraphic unit layer of the plurality of stratigraphic unit layers and for each stratigraphic unit. The methods also include, within each stratigraphic unit layer, selecting a corresponding layer parameter value from within the layer parameter value range. The methods further include generating the parameter realization by assigning the corresponding layer parameter value to the parameter realization for a corresponding layer depth range of each stratigraphic unit layer.

公开(公告)号：US20240272327A1

公开(公告)日：2024-08-15

申请号：US18411288

申请日：2024-01-12

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Brian R. CRAWFORD ,  Mary K. JOHNS ,  Kelvin I. AMALOKWU ,  Christopher J. FINN

IPC: G01V20/00 ,  G06F30/13

CPC classification number: G01V20/00 ,  G06F30/13

Abstract: A methodology for estimating stresses in the subsurface for the generation of a three dimensional (3D) mechanical earth model is provided. The method is executed via a processor of a computing system. The method includes generating a synthetic principal horizontal stress profile representative of a one-dimensional mechanical earth model (1D MEM) based on simplification that all formations are elastically isotropic. The method also includes combining the isotropically generated synthetic principal horizontal stress profile with an additional data-driven functional relationship for anisotropic formations to generate a global predictive conditional relationship based on a lithology dependent cutoff. The method also further includes generating a three-dimensional volume-based mechanical earth model using the global predictive conditional relationship.

公开(公告)号：US20230304396A1

公开(公告)日：2023-09-28

申请号：US18175763

申请日：2023-02-28

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Kelvin I. AMALOKWU ,  Brian R. CRAWFORD ,  Shreerang S. CHHATRE

IPC: E21B49/00 ,  G01N3/08 ,  G01N19/02 ,  G01N33/24 ,  E21B43/16

CPC classification number: E21B49/00 ,  G01N3/08 ,  G01N19/02 ,  G01N33/24 ,  E21B43/16 ,  G01N2203/0067

Abstract: Systems and methods described herein provide for the estimation of the maximum reservoir pressure at which fluid can be injected into a reservoir before causing conductivity increase due to fracture/fault reactivation. An exemplary method includes computing the maximum reservoir pressure for the location of interest prior to fracture/fault reactivation at a given depleted reservoir pressure based on a computed probability of non-exceedance for a field or laboratory estimate of the maximum reservoir pressure prior to fracture/fault reactivation and a computed pressure distribution including a range of potential maximum reservoir pressures for the location of interest prior to fracture/fault reactivation at the given depleted reservoir pressure. The method also includes outputting the computed maximum reservoir pressure as the estimated maximum reservoir pressure for performing a fluid injection operation for the location of interest.