珠江口盆地陆丰凹陷古近系多动力-多期次-多要素复合成藏区定量预测与评价
Editorial Committee of Earth Science-Journal of China University of Geosciences(2022)
中海石油(中国)有限公司深圳分公司
Abstract
珠江口盆地陆丰凹陷古近系油气成藏受多种动力多种要素联合控制,因此不能完全依照经典的浮力成藏理论预测有利成藏区带.通过剖析研究区已经发现的油气藏揭示出三种动力对油气成藏起到了关键作用,包括低位能(背斜类油气藏)、低压能(断块类油气藏)、低界面能(岩性地层类油气藏);在每一种动力作用下,油气成藏受到有效烃源层、优相储层、区域盖层、低势区带4个功能要素及其时空组合的控制.通过建立多动力-多要素复合成藏模式,对陆丰凹陷古近系4个目的层有利成藏区带进行了预测评价,优选出10个最有利目标,为研究区油气深化勘探和钻探目标优选提供了科学依据.
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