朱继田,杨希冰,胡向阳,罗威,李勇,毛雪莲,冯士信

• 1:中海石油(中国)有限公司湛江分公司

摘要(Abstract)：

琼东南盆地的中生代凹陷群是扩大油气勘探发现的远景区。为了实现琼东南盆地中生界的勘探突破，急需落实中生代凹陷的油气成藏条件和有利勘探领域。基于地球物理、地球化学、钻井资料及古生物资料，首次对琼东南盆地中生代凹陷开展了深入系统的分析研究。研究表明，在琼东南盆地北部崖北凹陷、崖城凸起、崖南低凸起和西南部陵南低凸起及南部隆起均存在中生代沉积地层。根据盆地构造演化分析，中生代沉积形成于燕山期太平洋板块向欧亚板块俯冲期以及其后的弧后伸展期，存在烃源岩、储层及圈闭等油气地质基本条件。琼东南盆地北部坳陷带崖城-崖北地区相比盆地其他地区中生代沉积凹陷规模大，因此本研究重点对琼东南盆地北部坳陷带崖城-崖北地区进行了系统的油气地质综合分析研究，落实了崖城-崖北地区中生界沉积地层分布，并初步评价预测了有利油气勘探区带及重点目标。研究表明，琼东南盆地崖城-崖北地区中生代凹陷发育湖相烃源岩、三角洲等储集体以及构造与地层圈闭，存在西洼南坡带和中部隆起带2个有利油气勘探区带。在这些区带加大勘探，有望获得中生界油气突破。

关键词(KeyWords)： 琼东南盆地;中生界;沉积地层;构造演化;有利油气勘探区带;崖城-崖北地区

Abstract:

Keywords:

基金项目(Foundation): 中海油重大综合科研项目“南海西部近海大中型天然气田勘探潜力与突破方向”

作者(Author): 朱继田,杨希冰,胡向阳,罗威,李勇,毛雪莲,冯士信

DOI: 10.19509/j.cnki.dzkq.2022.0219

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