Patent ID: 8032345

Claim:
A method for optimizing the development of an underground reservoir from a geological model representative of the reservoir, from dynamic data obtained from measurements within said reservoir and from data resulting from well tests carried out in wells traversing said reservoir, characterized in that the method comprises the following stages: A) modifying said geological model so as to meet the measured dynamic data and the data resulting from well tests, by carrying out the following stages: constructing a reservoir model by performing a scale change for said geological model, simulating dynamic data from said reservoir model by means of a flow simulator, identifying zones for said geological model where the well tests induce a pressure variation, simulating well tests for each zone by means of a flow simulator, calculating an objective function comprising a term measuring a difference between the measured dynamic data and the simulated dynamic data, a term measuring a difference between the data obtained from said well tests and data obtained from well test simulations, modifying said geological model so as to reduce the objective function, using a geostatistical parametrizing technique, then repeating the previous stages until a minimum value is obtained for the objective function, and B) optimizing the development of the underground reservoir by evaluating, by means of a flow simulator, the production of said reservoir for various production schemes applied to said geological model.