公开(公告)号：US12117582B2

公开(公告)日：2024-10-15

申请号：US17011254

申请日：2020-09-03

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Chandrasekhar Annavarapu Srinivas ,  Dakshina M. Valiveti ,  Vadim Dyadechko

IPC: G01V20/00 ,  G06F30/23 ,  G06F30/28 ,  G06F113/08

CPC classification number: G01V20/00 ,  G06F30/23 ,  G06F30/28 ,  G06F2113/08

Abstract: A method for generating a three-dimensional geomechanical model of a subsurface volume is provided. The geomechanical model may be used to predict changes in geomechanical stress in the grid (such as a three-dimensional unstructured grid), which may be caused by extraction from or injection into the reservoir. The geomechanical model may be generated by solving, in combination, the finite element method at the vertices of a respective cell in the grid for momentum balance and the finite volume method at the center of the respective cell for mass balance. In this way, one or both of rock displacement or pore flow may be solved using the geomechanical model.

公开(公告)号：US11675941B2

公开(公告)日：2023-06-13

申请号：US16849196

申请日：2020-04-15

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Dakshina M. Valiveti ,  Ting Song

IPC: G06F30/28 ,  E21B43/11 ,  E21B43/267 ,  G06F113/08

CPC classification number: G06F30/28 ,  E21B43/11 ,  E21B43/267 ,  G06F2113/08

Abstract: A method for modeling fluid flow in a wellbore is provided. Hydraulic fracturing is an effective technique to improve well productivity by forming high permeable pathways for hydrocarbons to flow from the rock formation to the wellbore. Fluid flow for hydraulic fracturing is modeled using separated flow components, including a wellbore component (modeling the wellbore(s)), a perforation component (modeling the perforations(s)), a fracture component (modeling the fracture(s)) and a rock component (modeling the rock). Each respective component may be selected independently from a plurality of available components. Further, the respective components may be coupled to one another only at their interfaces, such as at a wellbore-perforation interface, a perforation-fracture interface, and a fracture-rock interface, for continuity of fluid kinematics and properties (such as pressure and density). In this way, the modeling of the subsurface may be tailored to the respective components in order to effectively predict the fracturing treatment.