Abstract: In a method for modeling a reservoir having a horizon surface with a reverse fault, a volume of the reservoir is partitioned into fault blocks. A bounding surface of each of the fault blocks includes a portion of the reverse fault. The interior of each of the fault blocks includes only single valued horizon surfaces. Horizon data describing the reservoir is partitioned into patches, each patch corresponding to a fault block. A horizon surface patch model is derived from the data patch in the interior of each fault block. The horizon patch model includes an up-thrown or down-thrown fault trace, which defines the intersection of the surface patch with the bounding reverse fault. Continuity constraints are defined to ensure that horizon surface patch models on the opposite sides of the reverse fault coincide outside of the real fault.

Abstract: In a method for modeling a reservoir having a horizon surface with a reverse fault, a volume of the reservoir is partitioned into fault blocks. A bounding surface of each of the fault blocks includes a portion of the reverse fault. The interior of each of the fault blocks includes only single valued horizon surfaces. Horizon data describing the reservoir is partitioned into patches, each patch corresponding to a fault block. A horizon surface patch model is derived from the data patch in the interior of each fault block. The horizon patch model includes an up-thrown or down-thrown fault trace, which defines the intersection of the surface patch with the bounding reverse fault. Continuity constraints are defined to ensure that horizon surface patch models on the opposite sides of the reverse fault coincide outside of the real fault.