Patent Document ID: 8674984
Application ID: 13178539
Patent Flag: 1

Claim One:
1. A method for generating a mesh of a subterranean medium comprising at least one sedimentary layer crossed by at least one fault, the at least one layer being defined vertically by two geological horizons discretized by two triangulated three-dimensional surfaces, comprising: i. transferring each three-dimensional surface into a regular two-dimensional grid by an isometric unfolding accounting for the at least one fault, while preserving an identical number of quadrilaterals in each direction for each grid; ii. transferring each regular grid into a three-dimensional gridded surface and transferring each quadrilateral crossed by the at least one fault at the level of a diagonal into two triangles wherein each gridded surface comprises a set of triangular and quadrilateral surface elements; iii. generating the mesh of the subterranean medium by generating cells by creating links between nodes of surface elements of the two three-dimensional gridded surfaces by detecting nodes of a first gridded surface that are situated on one side of the fault different from a side of a node of a second gridded surface having like coordinates; joining each undetected node of the first gridded surface with a node of the second gridded surface having like coordinates; joining each detected node of the first gridded surface with the at least one fault by considering a direction of a neighboring node; and regularizing cells having at least two common vertices.