也门马里卜—夏布瓦盆地的地质模式和油气成藏风格  

Geological Mode and Hydrocarbon Accumulation Style of Marib-Shabwah Basin in Yemen

作　　者：黄彦庆[1] 侯读杰[1] 江尚昆[1] 余明发[1] 张海全[1] 

机构地区：[1]中国地质大学(北京)能源学院,北京100083

出　　处：《中国石油勘探》2007年第6期58-62,共5页China Petroleum Exploration

基　　金：国家教育部重点科技研究项目(10404)资助

摘　　要：也门马里卜—夏布瓦盆地是在板块分离产生的剪切应力场背景下拉张形成的一种被动裂谷盆地,不同于地幔上涌产生的主动裂谷。该盆地中生代经历了先强后弱两期裂陷作用,发育两套生油岩,其中第一裂谷期Lam-Meem组是主力生油层。盆地中发育6套成藏组合,其中以Lam组砂岩和Alif砂岩为储层、Lam组泥岩和Sabatayn组盐岩为区域盖层的组合是盆地内的主要成藏组合,反向断层翘倾断块、盐构造和披覆背斜为主要圈闭类型。研究表明,马里卜—夏布瓦盆地具有优越的油气成藏条件和较好的勘探前景。Marib-Shabwah Basin is a passive rift basin. It was resulted from the extensional tectonics of shear stress field. It is different from active rift basins formed by the uplift of mantle convection. The Mesozoic Era of the basin underwent two phases of rift, i.e., firstly strong and then weak. There are two sets of source rocks. Lam-Meem Formation generated in the first rift phase is the major source bed in the basin. Six hydrocarbon accumulation assemblages developed in the basin. The assemblage of Lam sandstone and Alif sandstone and the assemblage of Alif sandstone and Sabatayn regional cap rock formed the chief oil-bearing beds. The main traps include titled antithetic normal faults, drape traps, and salt structures. Research shows that Marib-Shabwah Basin has favorable hydrocarbon accumulation conditions and broad prospect for exploration.

关 键 词：被动裂谷盆地 地质模式 成藏模式 马里卜-夏布瓦盆地 也门 

分 类 号：TE11[石油与天然气工程—油气勘探]