济阳坳陷车镇凹陷大王庄缓坡带同生断层与油气聚集

大王庄缓坡带是济阳坳陷车镇凹陷南部最复杂的鼻状构造带之一,油气资源十分丰富,区带油气成藏与断裂体系关系密切。该文以研究区主力含油层系沙河街组为例,运用断层生长指数参数法厘定同生断层,并通过其发育特征和成因分析,论述与油气聚集的关系。研究结果表明,缓坡带发育多条特征相近的同生断层,断层组合式样控制了构造圈闭的形态和油气富集,具有运移通道和侧向封闭的双重性质,控制了砂体的发育和分布,具有控砂控藏作用。

The Contemporaneous Faults and Oil-gas Accumulation in Dawangzhuang Gentle Slope in the Chezhen Sag, Jiyang Depression

Dawangzhuang gentle slope is the most complex nose structure with one of the very rich oil and gas resources in the south Chezhen Sag,Jiyang Depression.Hydrocarbon accumulation is closely related to the fault system.Taking the main oil-bearing strata,Shahejie Formation,in the research area as an example,this paper analyzed the contemporaneous faults with the fault growth index and other related parameters,discussing the relationship of fault system with the hydrocarbon accumulation.The results show that many contemporaneous faults with similar features developed in the gentle slope have controlled the formation of structural traps and oil and gas accumulation.The fault system acted as the migration pathway and lateral seal at the same time,because it has controlled the distribution of sand bodies and the reservoirs.