PI Decision-making Technique and its Application to Profile Correction in A Fault Block Oilfield

PI decided-making is a pressure exponent decision- making technique based on wellhead pressure fall-off curve of water injectors. This paper introduces the PI decision- making technique and its application. After it is applied, all the development indexes are improved, production decline rate is lowered, and the production stabilization target at high water cut stage is realized. PI decision-making technique has the advantages of fast, practical and easy to operate and can meet the need of profile correction and water-plugging at high water cut stage in complex fault block reservoirs, thus has a bright prospect of deployment.