SYSTEMS, COMPUTER-IMPLEMENTED METHODS AND COMPUTER-READABLE PROGRAM PRODUCTS TO COMPUTE APPROXIMATE WELL DRAINAGE PRESSURE FOR RESERVOIR SIMULATOR Russian patent published in 2015 - IPC G06G7/57 G06F17/50 

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to computation of approximate static well pressure for one or more arbitrary shaped wells in homogeneous and heterogeneous reservoirs. Determination of approximate static well pressure is based on estimating the drainage volume of one or more wells. The drainage volume, for example, can be estimated from the one or more computed fluid flow flux vectors and the approximate static well pressure in the well can be subsequently calculated by taking the pore volume average of the dynamic grid block pressure within the drainage volume of the one or more wells. The one or more fluid flow flux vectors can be calculated at each iteration in a numerical reservoir simulator as a part of standard simulator computations.

EFFECT: more accurate approximation of the true static well pressure at every time step of the simulator, which improves computation of approximate static pressure for arbitrarily shaped wells in homogeneous and heterogeneous reservoirs and avoids additional computations of the effective drainage volume by calculating fluid flow flux vectors at each iteration in a numerical reservoir simulator.

50 cl, 19 dwg