摘要
吐哈盆地台北凹陷西部雁木西—神泉地区自始新统至渐中新统桃树园组沉积期发育了近千米厚的膏盐岩,主要成分是硬石膏。分析膏盐岩的沉积特征,结合成藏条件综合分析,可知膏盐岩对浅层油气的运移、聚集和保存起着至关重要的作用:膏盐层具有极强的物性封闭能力;由石膏向硬石膏转化过程中脱水导致欠压实泥岩的形成;膏盐层与欠压实泥岩共同控制着凹陷西部浅层油气的运移、聚集和保存。胜南及雁木西油田周边膏盐层十分发育,是浅层继续滚动勘探的有利地区。图2表1参5(梁大新摘)
During the deposition period of Taoshuyuan Formation from Eocene to Oligocene Miocene developed almost one thousand meter thick plaster salt rock, whose most component is anhydrite, in the Yanmuxi Shenquan region of the west of Taibei depression. Synthetical analysis on the sediment characteristics of plaster salt rock combined with the condition for forming pools shows that plaster salt rock is vital to the migration, accumulation and conservation of hydrocarbon in the shallow formations. The circumference of Shengnan and Yanmuxi oil fields where plaster salt rock is greatly developed is of advantage for continuously progressive exploration in the shallow formation, which should be much thought of.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2000年第1期29-31,共3页
Petroleum Exploration and Development
关键词
第三系
膏盐岩
油气运聚
台北凹陷
Turpan Hami basin, Taibei seg, Evaporite bed, Oil and gas migration, Oil and gas accumulation, Reservoir preservation condition
