Modelling the Piper Field Using Layer Cross Flow at Faults

The Piper Field, located in U.K. Block 15/17, 110 miles northeast of Aberdeen in the North Sea produces from Jurassic sandstones. A special finite difference simulator was coded and used to model the field, which is a large faulted reservoir consisting of layers of contrasting but high permeability. The formulation allows any number of connections between grid blocks providing the flexibiligy to include fault throw as a variable during three-dimensional history matching. Because correspondence between geological and model layers in preserved, model cost and complexity are reduced. 8 refs.