摘要
潍北凹陷的区域地质和石油地质研究结果表明,潍北凹陷具备了形成致密气藏的构造、沉积、烃源岩、储层、盖层和圈闭条件,其中最有利的地区和层系为北部洼陷带埋深大于3000m的孔店组二段砂岩。通过对大地构造背景和石油地质条件相似的潍北凹陷和东濮凹陷对比研究发现,这两个凹陷的致密气藏形成条件存在着差异,这些差异主要表现在烃源岩、储层和盖层条件上,其中东濮凹陷致密气藏的形成条件明显优于潍北凹陷。
Research results of regional geology and petroleum geology of Weibei sag suggest that there are good formation conditions for tight gas reservoir in structure, sedimentary, source rock, reservoir rock, caprock and trap conditions in Weibei sag. The sandstones under the depth of 3 000 m of the second member of Kongdian formation in north sag are the most favourable for the formation of tight gas reservoirin Weibei sag. Based on the compassion researches in regional geology and petroleum geology between Weibei sag and Dongpu sag which are similar in tectonic basis and petroleum geology each other, the formation conditions for tight gas reservoir in Weibei sag are different from that in Dongpu sag. The differences of the formation conditions for tight gas reservoir between Weibei sag and Dongpu sag are source rock, reservoir rock and caprock. The formation conditions for tight gas reservoir in Dongpu sag are better than that in Weibei sag.
出处
《天然气地球科学》
EI
CAS
CSCD
2004年第6期622-627,共6页
Natural Gas Geoscience
基金
中石化"十五"重点科技攻关项目(编号:p01039)资助.
