从世界第三纪生物礁的油气储集潜能看中国南海生物礁储层发育和分布的控制因素  

Considering controls on development and distribution of reef reservoirs in South China Sea from the hydrocarbon accumulation potential of Tertiary reefs in the world

作　　者：吴熙纯[1] 王权锋[2] 陈斯忠 杨霞[4] 

机构地区：[1]成都理工大学能源学院 [2]成都理工大学数学地质四川省高校重点实验室 [3]中海石油(中国)有限公司深圳分公司 [4]川庆钻探工程有限公司地质勘探开发研究院

出　　处：《中国海上油气》2011年第4期218-224,共7页China Offshore Oil and Gas

摘　　要：在对世界第三纪生物礁的油气储集潜能、东南亚第三纪生物礁的主要成岩作用与油气储层形成机理以及中国南海第三纪生物礁储层发育和分布的控制因素进行分析的基础上,探讨了中国南海生物礁储层的油气勘探。世界第三纪生物礁发育的最鼎盛期是早中新世Burdigalian期至中中新世Serravalian期,油气主要产于晚渐新世至中中新世的生物礁储层中,以真礁的油气储集潜能为最好。东南亚第三纪生物礁-滩组合的主要成岩作用类型是近地表古岩溶、白垩化和白云化,分别形成古岩溶储层、白垩化储层及白云化储层。中国南海第三纪生物礁储层的发育和分布主要受控于洋流和海平面变化、地裂运动、礁的类型、礁的成岩相分区、礁的就地转移性和礁的沉积水深等因素,在深水区晚渐新世至中中新世地层中都有寻找礁型储层的前景,勘探时须将生物礁-滩组合作整体部署。After analyzing the hydrocarbon accumulation potential of Tertiary reefs in the world, the main diageneses and reservoir forming mechanisms of Tertiary reefs in Southeast Asia and the controls on development and distribution of Tertiary reef reservoirs in South China Sea, the hydrocarbon exploration for reef reservoirs is discussed in South China Sea. In the world, Tertiary reef development peaked from Early Miocene Burdigalian to Middle Miocene Serravalian, and hydrocarbon has mainly produced from Late Oligocene to Middle Miocene reef reservoirs, with the true reefs being the greatest in hydrocarbon accumulation potential. For Tertiary reefbeach complexes in Southeast Asia, the major types of diagenesis are near-surface karstification, chalkifi- cation and dolomization, resulting in paleo-karst reservoirs, chalkified reservoirs and dolomized reservoirs respectively. In South China Sea, the development and distribution of Tertiary reef reservoirs are controlled by such factors as the changes of ocean current and sea level, the taphrogenic movements, the reef types, the diagenetic facies zones of reef, the on-site shifting of reef development, and the water depth of reef. It is possible to find reef reservoirs in the deep-water deposional sequences from Late Oligocene to Middle Miocene, and an overall deployment should be made for the reef-beach complexes during exploration.

关 键 词：世界第三纪生物礁 油气储集潜能 中国南海生物礁 发育和分布 控制因素 

分 类 号：P618.130.2[天文地球—矿床学]