Patent ID: 8145427

Claim:
In a computing system having a processor and system memory and which is configured to receive and analyze data relating to net actual production gain and a sum of current oil rates for existing producers of a petroleum reservoir, a method for determining the production gain index (PGI) for a producing petroleum reservoir, comprising: inputting into the computing system data relating to the net actual production gain of the petroleum reservoir (ΣΔq A ) post project development; inputting into the computing system data relating to the sum of current oil rates for existing producers (Σq Old ) of the petroleum reservoir prior to project development; and the computing system determining, by relating the net actual production gain (ΣΔq A ) of the petroleum reservoir post project development with the sum of current oil rates (Σq Old ) of the petroleum reservoir prior to project development, the production gain index (PGI) for the petroleum reservoir.