平湖油气田主断裂西部烃源评价及油源对比

平湖油气田主力含油气区位于平湖主断裂以东区域,油源主要来源于东部生烃凹陷的半封闭海湾暗色泥岩和煤层.公司于2011年11月在主断裂西部钻了一口探井XY井,目的是为探测主断裂西部含油气情况,扩大油气储量.结果钻遇油气层12m,测试获日产气14.66×104m3,日产油107.8 m3,取得了一定突破.为进一步评价西部含油气规模,钻后进行了油源对比研究,认为西部的油气主要是东部运移聚集的结果,西部源岩也有一定贡献.西部有形成一定规模油气藏的潜力.

Evaluation on the Sources Rock and Oil Source Correlation in the West Region of the Main Fault in Pinghu Oil and Gas Field

The main oil and gas development area of Pinghu oil and gas field is in the east region of Pinghu main fault. Oil sourced mainly from semi-enclosed embayment dark mudstones and coals in the east hydrocarbon generation sag. Well XY was drilled in the west region of Pinghu main fault to make clear about the hydrocarbon bearing conditions in the west region of Pinghu main fault, and 12 m oil layer was penetrated. After production testing, 14.66× 104 m3 daily gas production was obtained, daily crude oil production is 107.8 m3. Great breakthrough has been made in oil and gas exploration in west region. Through oil and source correlation, it is believed that the oil and gas in the west region mainly migrated from east region of Pinghu main fault and then accumulated, and the source rocks in the west region also made certain contribution to oil and gas. It is found that there are a certain amount of hydrocarbon ootential in the west region.