石油与天然气地质 ›› 2022, Vol. 43 ›› Issue (3): 566-581.doi: 10.11743/ogg20220307
吕传炳1(), 庞雄奇2,3, 马奎友2,3, 庞宏2,3, 火勋港2,3, 付亮亮1, 张心罡2,3, 梁星如1,2, 吴松2,3
收稿日期:
2021-01-11
修回日期:
2022-03-14
出版日期:
2022-06-01
发布日期:
2022-05-06
作者简介:
吕传炳(1964—),男,教授级高级工程师,油田地质及油藏评价。E?mail: 基金资助:
Chuanbing Lyu1(), Xiongqi Pang2,3, Kuiyou Ma2,3, Hong Pang2,3, Xungang Huo2,3, Liangliang Fu1, Xingang Zhang2,3, Xingru Liang1,2, Song Wu2,3
Received:
2021-01-11
Revised:
2022-03-14
Online:
2022-06-01
Published:
2022-05-06
摘要:
冀中坳陷束鹿凹陷具有良好的油气成藏条件,然而实际勘探中许多直井无法获得工业产能。以束鹿凹陷车城油田沙河街组“牙刷状”油藏为研究对象,从储层特征、隔夹层特征、盖层特征、油气来源及运移路径,综合分析了“牙刷状”油藏成藏条件及成藏过程,并总结了其成藏模式。研究表明:“牙刷状”油藏富集于优势砂地比储层中,油藏间被盖层分隔成不同的压力系统,油藏内被相对致密的砂岩隔夹层分隔成一系列压力系统相同的储集单元;断层是“牙刷状”油藏成藏的平面运移及垂向运移主要通道。该地区存在两期油气充注,第一期原油充注是“牙刷状”油藏的主要油气来源,且该期充注的油气沿同期发育的断层运移至地表浅层并散失,使得油气层厚度随深度变浅逐渐减小;油气运移方向与优质储层展布方向大致垂直,导致油藏集中发育在油气运移方向上的断层圈闭中,形成了一系列“牙刷状”油藏。文章系统论述了“牙刷状”油藏的成因机制,为研究区后续勘探开发工作提供可靠的理论基础。
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