US Patent No. 10,920,539

NITSCHE CONTINUITY ENFORCEMENT FOR NON-CONFORMING MESHES


Patent No. 10,920,539
Issue Date February 16, 2021
Title Nitsche Continuity Enforcement For Non-conforming Meshes
Inventorship Gauthier D. Becker, The Woodlands, TX (US)
Hao Huang, The Woodlands, TX (US)
Huafei Sun, Houston, TX (US)
Assignee ExxonMobil Upstream Research Company, Spring, TX (US)

Claim of US Patent No. 10,920,539

1. A method for modeling a subsurface reservoir system, the method comprising:generating, with a computer, a background mesh that does not honor at least one subsurface feature included in the subsurface reservoir system;
splitting, with a computer, the background mesh along the subsurface feature included in the subsurface reservoir system such that a resulting mesh honors a geometry of the subsurface features;
identifying, with a computer, element faces or edges where the resulting mesh is non-conforming and/or the element faces or edges lie on subsurface features; and
performing a computer-based numerical simulation utilizing the resulting mesh to model at least one fluid-related or geomechanical reservoir response, wherein mass or traction balance is enforced on the identified element faces or edges.