【摘要】 南海莺歌海-琼东南盆地(莺-琼盆地)历经几十年勘探取得了良好的天然气发现,但气田主要集中在莺歌海盆地东方区和琼东南盆地深水区中央峡谷西区。从莺-琼盆地基础石油地质条件出发,通过分析莺歌海盆地乐东区构造事件与沉积、成藏之间的耦合关系及琼东南盆地深水区中央峡谷水道储层发育、油气运移成藏模式,提出了乐东区斜坡近洼带具有探明千亿立方米天然气的资源基础和中央峡谷水道东区是拓展勘探重要领域的新认识。在此新的地质认识指导下,新钻井获得重大发现,新增天然气地质储量约600×108 m3,深水东区测试获得日产约百万立方米的高产,从而揭开了莺-琼盆地高温高压和深水天然气勘探的新篇章。更多还原

【Abstract】 Considerable natural gas discoveries have been achieved in recent decades in Yinggehai-Qiongdongnan basin（Ying-Qiong basin）of the South China Sea,but these discoveries mainly concentrate in Dongfang area of Yinggehai basin and western Central Canyon area of deep water area in Qiongdongnan basin.Based on the understandings of petroleum geological conditions of the study area,through analysis of the coupling relationship of tectonic events with deposition process and hydrocarbon accumulation in Ledong area of Yinggehai basin,and the reservoir development,hydrocarbon migration and accumulation models of central canyon in deep water area of Qiongdongnan basin,two new understandings are proposed as:there is the resource base of 1×10¹¹ m³ of proved natural gas reserves in near-sag area of Ledong slope area and eastern Central Canyon area is the key area for extended exploration.With the guidance of new understandings,new drillings discover 6×10¹⁰ m³ natural gas in the study area,and test production of 1×10⁶ m³/d is obtained in eastern deep water area.The discoveries unravel a new chapter for natural gas exploration in high temperature and high pressure area and deep water area of Yinggehai-Qiongdongnan basin.更多还原