GAS RESOURCE OF BOHAI BAY AND ITS SURROUNDING AREAS

Gas resource in offshore part and its surrounding Huanghua, Liaohe and Jiyang depressions in Bohai Bay Basin showed their own characteristics.The offshore is an important part of the basin with special geological character, which is extension of the three depressions.Tanlu fault belt passing through the offshore part played a very important part in hydrocarbon formation and accumulation.Gas generation was controlled by kerogen types and their evolution level.Onshores Dagang and Liaohe oil gas provinces showed favourable gas potential, but Shengli oil province is dominated by oil as a result of tremendous type I kerogen and low maturity.The offshore is a favourable area for gas generation and preservation due to rich source rocks, high maturity and overpressure.Gas resource in offshore is enormous.