摘要
黄骅坳陷中段西部的板桥凹陷沙河街组烃源岩压实曲线具有两个明显的欠压实峰，沙一段中部的欠压实峰是该层位的低熟烃源岩生烃所形成的，其幅度小于沙二段和沙三段成熟烃源岩生烃所形成的欠压实峰，这种不均衡的剩余压力分布特征导致沙一段中部的油主要来自同一层段的低熟烃源岩，而沙一段下部和沙二段的油则来自下部的成熟烃源岩。平面上，低熟油气的运移方向也受到过剩压力的控制，从高过剩压力区向低过剩压力区运移，即由板１３井深洼部位向北西。
Banqiao depression is located in the western part of Huanghua depression where there are two under compaction peaks on a compaction curve of source rocks in the middle section of the Shahejie formation of Eocene(Es) One of them in the middle part of member 1 of the Shahejie formation(Es 1) is formed by hydrocarbon generation of immature source rocks, whose extent is lower than the other peak in member 2 and 3 (Es 2, Es 3) formed by hydrocarbon generation of mature source rocks The unbalance distribution of overpressure resulted in the oil in the middle part of member 1 coming from immature source rock in the same member and the oil in member 2 and 3 coming from mature source rock of lower strata The plane migration of immature oil is also controlled by overpressure, the direction of migration is from higher to lower overpressure, i e from deep trough near well Ban 13 to areas of lower overpressure in the north west, south east and south west
出处
《江汉石油学院学报》
CSCD
北大核心
1999年第1期5-8,共4页
Journal of Jianghan Petroleum Institute
基金
国家"八五"重点科技攻关课题
关键词
生油层
低成熟油
压实作用
油气运移
烃源岩
low maturation oil
source rock
compaction(geology)
primary migration
expelling hydrocarbon
Banqiao depression
