吉林大学学报(地球科学版) ›› 2021, Vol. 51 ›› Issue (3): 694-703.doi: 10.13278/j.cnki.jjuese.20200084
袁红旗, 魏鸣禄, 于英华
Yuan Hongqi, Wei Minglu, Yu Yinghua
摘要: 本文通过油气成藏期油源断裂不同部位古活动速率相对大小分布,确定其油气输导的优势通道。并基于优势输导通道的断裂古活动速率、古倾角、目的层古埋深和源岩古剩余地层压力等指标,建立了一套油源断裂在油气成藏期优势通道输导能力的综合评判方法。以渤海湾盆地冀中坳陷廊固凹陷为靶区,对大柳泉区块旧州油源断裂带在成藏期沙三中下亚段内的优势通道进行了厘定和油气输导能力综合评判。评判结果表明:旧州油源断裂6条分支断裂油气成藏期——沙二段沉积时期发育了10个优势通道,其油气输导能力以F1和F2分支断裂的6个优势通道输导油气能力相对较强,有利于油气运移,F3、F4、F5和F6分支断裂发育4个优势通道,其输导油气能力相对较弱,不利于油气运移。此评判结果与目前旧州断裂带附近沙三中下亚段内的油气分布现状相吻合,表明用此方法进行油源断裂成藏期优势通道的输导能力综合评判是可行性的。
中图分类号:
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