石油与天然气地质 ›› 2024, Vol. 45 ›› Issue (3): 673-683.doi: 10.11743/ogg20240307
收稿日期:
2024-01-30
修回日期:
2024-05-18
出版日期:
2024-06-30
发布日期:
2024-07-01
第一作者简介:
周荔青(1964—),男,博士、教授级高级工程师,油气勘探综合研究。E-mail: zhoulq.shhy@sinopec.com。
基金项目:
Liqing ZHOU(), Donghui JIANG, Pengcheng YANG, Rufeng ZHANG, Xin DONG, Yadi SANG
Received:
2024-01-30
Revised:
2024-05-18
Online:
2024-06-30
Published:
2024-07-01
摘要:
琼东南盆地陵水凹陷南坡已发现了中央峡谷千亿方级气田,证实了陵水凹陷为富生烃凹陷。而陵水凹陷北坡LS13-2区的岩性圈闭勘探虽然也取得了“点”上的突破,但“见气不见田”,勘探效果不佳。为了明确该地区的油气富集规律和有利区带,以含油气盆地分析为基础,聚焦关键成藏要素,提出了新的勘探思路,并明确了有利成藏区带。研究结果表明:工区成藏条件整体有利,具备“充足烃源、规模储层、高效输导、整体保存”的大-中型油气田形成基础,但对于中新统岩性圈闭勘探来讲,也存在“烃源岩主排烃期早于圈闭定型期,断层垂向输导能力低”的不利因素,据此建立了“早期成藏、岩性圈闭、断-砂输导”三元勘探评价要素,并评价认为探区西部断坡海底扇带具备“原生油气藏、规模岩性圈闭、断-砂高效输导”的有利成藏条件,为最有利成藏区带。
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