Patent ID: 7890264

Claim:
A method of analyzing a subterranean formation, comprising: specifying a volume of interest in the subterranean formation; specifying an injector wellsite, which penetrates the volume of interest; specifying a first producer wellsite and a second producer wellsite, each of which penetrates the volume of interest; calculating, using a processor of a computer system, a first Injectivity-Productivity Index (IPI) for a first injector-producer wellsite pair which includes the injector wellsite and the first producer wellsite, wherein the first IPI is calculated based on a total flowrate of injected fluid between the injector wellsite and the first producer wellsite, a first bottom hole pressure of the injector wellsite, and a second bottom hole pressure of the first producer wellsite; calculating, using the processor, a second IPI for a second injector-producer wellsite pair which includes the injector wellsite and the second producer wellsite, wherein the second IPI is calculated based on the total flowrate of injected fluid between the injector wellsite and the first producer wellsite, the first bottom hole pressure of the injector wellsite, and a third bottom hole pressure of the second producer wellsite; determining, using the processor, whether the first IPI is substantially equal to the second IPI to obtain an analysis result; and adjusting a wellsite operation based on the analysis result.