“源热共控”新西兰南大盆地生烃潜力  

Hydrocarbon Generation Potential in Great South Basin,New Zealand

作　　者：金莉 杨松岭 柯岭 骆宗强 孙翠娟 

机构地区：[1]中海油研究总院海外评价中心

出　　处：《海相油气地质》2015年第3期66-72,共7页Marine Origin Petroleum Geology

基　　金：国家科技重大专项"大陆边缘盆地类比与油气成藏规律研究"(编号:2011ZX05030001)资助

摘　　要：新西兰南大盆地(Great South Basin)经历了裂谷期、拗陷期及大陆边缘期三个构造演化阶段,并发育了三套烃源岩,分别为裂谷期的上白垩统Hoiho群煤系烃源岩(为主要烃源岩)、拗陷期的上白垩统—古新统Taratu组海岸平原相煤系烃源岩和Wickliffe组海相泥岩烃源岩。源热耦合分析发现,裂谷期Hoiho群湖沼相煤系烃源岩埋藏深,有机质丰度高,热演化程度高,有效烃源岩体积大,生气潜力也大;Taratu组海岸平原相煤系烃源岩也是有效烃源岩。认为中央坳陷烃源岩发育,油气潜力大。Grea t South Basin has experienced three tectonic evolution stages, i.e. the rifting, the depression and the passive margin stages. Three set of source rocks developed in the basin, which are Hoiho Group coal-measures that formed during the rifting stage, and Taratu coastal plain coal-measures and Wickliffe marine mudstone that formed during the depression stage. In the light of Zhang′s "source-heat co-control" theory, it is indicated that Hoiho Group coal-measures should be the principle gas source rock owing to their deep burial and large effective volume with abundant organic matter and high thermal evolution. Besides Taratu coal-measures may be also effective source rock in local areas. It is believed that Central Depression where thick source rocks develop is of giant hydrocarbon potential.

关 键 词：新西兰 南大盆地 烃源岩 生烃潜力 源热共控论 

分 类 号：TE121.2[石油与天然气工程—油气勘探]