Abstract

Mumbai High field located in Mumbai Offshore is a large doubly plunging anticline (Paleohigh) bounded towards east by NNW-SSE trending basement controlled fault. The major Carbonate reservoirs of Mumbai high were deposited during Early Miocene (LS-C) and Middle Miocene (LS-B). The LS-B reservoir has small gas cap at the crest and aquifer from the edges. The exploitation was initiated in June 1985 and peaked at 40332 BOPD in June 1995 (Figure-1). Peripheral water injection to maintain pressure started in April 1991 on realizing the fact that energy support from the gas cap and the aquifer is insufficient, but its effect did not meet the requirements. This led to commencement of up dip injection in June 1994, in addition to peripheral injection. This action too didn