摘要
曲靖盆地是区域性走滑构造应力作用下形成的第三纪箕状断陷湖盆残留盆地。研究了构成曲靖盆地生物气系统的气源岩、储集层、盖层等成藏基本要素(尤其是气源岩埋藏史)和该生物气的运聚特点、含气系统在剖面上的特征以及构造演化对成藏的控制作用等,认为由于受构造抬升影响,造成储层、盖层破坏和含气圈闭规模较小,该盆地生物气藏的资源潜力有限,生物气勘探前景并不十分乐观。
Qujing basin in the Yunnan province as a Tertiary fault-subsidence lacustrine residual basin is formed under the regional strike-slip tectonic stress. In this context, we systematically investigat6 the characteristics of biogenic gas reservoir, e.g. source rocks, reservoirs and cap rocks （especially the burial history of source rocks）, migration and accumulation, the geological sections in the hydrocarbon system, and the controlling function of tectonic evolution in the gas accumulation in the Qujing basin. According to the integrated analyses and comprehensive understanding of hydrocarbon geology, the future exploration of biogenic gas reservoirs in the Qujing basin is not expected because of the reservoirs and cap rocks damaged by tectonic-uplift and the small scale of trap.
出处
《天然气地球科学》
EI
CAS
CSCD
2007年第5期673-677,共5页
Natural Gas Geoscience
基金
中国科学院知识创新工程重要方向项目(编号:KZCX2-YW-203-2)资助
关键词
曲靖盆地
生物气
生物气系统
成藏要素
运聚特点
Qujing basin
Biogenic gas
Biogenic gas system
Biogenic gas reservoir factors
Migration and accumulation.
