Schlumberger Technology Corporation

Paul Woodhams

Dominic Walsh

A method for reducing an order of a discrete fractured network simulation. The method includes receiving cells representing a portion of a subterranean formation that includes a fracture. A first plurality of the cells that correspond to the fracture may be marked as a first cell level. A second plurality of the cells that touch the first plurality of cells may be marked as a second cell level. The first plurality of cells may be grouped into a first superelement. The second plurality of cells may be grouped into a second superelement. One of the first plurality of cells in the first superelement may be designated as a master cell. A volume for the master cell may be updated to include volumes for each of the first plurality of cells in the first superelement.

Model order reduction technique for discrete fractured network simulation

A method, apparatus, and program product use graph partitioning to distribute wells to a plurality of solve processors in a parallel reservoir simulation environment to optimize performance of well solve operations during reservoir simulations. Wells may be distributed to assign wells to partitions and associated solve processors and/or other processing resources in a manner that optimizes communication costs and/or costs associated with performing well solve operations.

Graph partitioning to distribute wells in parallel reservoir simulation

A method, apparatus, and program product utilize a generalized grid cell pinchout operation to remove small cells from a reservoir simulation grid, e.g., prior to running a reservoir simulation. The generalized grid cell pinchout operation may utilize a connectivity matrix representing transmissibilities of one or more 'pinch' cells to be removed as well as that of 'background' cells that neighbor the pinch cells. Removal of the pinch cells includes determining a Schur complement of the connectivity matrix to generate a reduced connectivity matrix from the connectivity matrix.

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Abingdon, United Kingdom

Paul Woodhams