【摘要】 针对油气勘探中同一断层不同部位油气富集差异性,利用地震解释资料和钻探资料,研究辽河西部凹陷齐家—鸳鸯沟地区沙二段油气聚集与保存所需最低的断层后期活动强度.结果表明:沙二段内主要发育4条走向相同的断层,在主要油气成藏期—东营组沉积末期之后馆陶组—第四系的活动过程中,其中f1断层活动强度最大,对油气聚集的破坏作用最强;其次是f3断层,再次是f4断层,f2断层活动最弱,断层后期活动强度与油气分布之间具有密切关系,断层后期活动强度越小的断层或部位,油气越富集,油气钻探成功率越高;反之,则越低.沙二段油气聚集与保存所需最低的断层后期活动强度约为2m/Ma.更多还原

【Abstract】 Aiming at the problem that oil and gas accumulation is different in different parts of the same fault in oil and gas exploration,by use of seismic data interpretation and drilling data,it conducts the required minimum late activity intensity of fault in hydrocarbon accumulation and preservation in Shaer member of western depression of Liaohe Qijia-Yuanyanggou area,the results show that there are four faults with the same strike in Shaer member,in the period Guantao group to quaternary after the end of Dongying to Guantao deposition,activity intensity of f1 fault is maximum,followed by f3 fault,again is f4,the activity intensity of f2 fault is weakest.There is a close relationship between oil and gas distribution and late activity intensity of fault,the smaller parts of strength of post-event of fault,the more enriched oil and gas,and drilling success rate is higher;the other hand the more low.the required minimum late activity intensity of fault in hydrocarbon accumulation and preservation in Shaer member is about 2 m/Ma.更多还原