Patent ID: 9176252
Filing Date: 2015-11-03
Classification: G01N,G01V,Y02A

Abstract:
1. A method of estimating fluid invasion rate for portions of a subterranean formation of interest surrounding a borehole, the method comprising: generating electromagnetic signals within the subterranean formation of interest using at least one electromagnetic transmitter; detecting the generated electromagnetic signals using at least one electromagnetic receiver to obtain electromagnetic survey data of the subterranean formation of interest, wherein the electromagnetic survey data is representative of an electrical property of the subterranean formation of interest; directly inverting the electromagnetic survey data for a fluid invasion rate of a fluid, wherein the inversion is constrained by a fluid flow simulator that simulates a fluid flow process through the formation of interest and that generates simulated fluid flow characteristics; and generating an estimate of the fluid invasion rate based at least in part on the inversion.