摘要
河南舞阳、襄城凹陷下第三系核桃园组为一套含膏岩、盐岩的暗色泥岩生油建造 ,大部分暗色泥岩属较好和好的烃源岩 ,生油母质以Ⅱ1型为主 ,烃源岩大部分处于未熟—低熟演化阶段。两凹陷在已钻探的井中见到丰富的油气显示 ,并试获少量原油 ,均属未熟—低熟油 ,但是至今未发现工业油流。通过与江汉盆地的对比研究 ,认为舞阳、襄城两凹陷具备形成中小油气田的地质条件 ,有望获得工业油流。
The Paleogene Hetaoyuan Formation is mainly a set of salt-bearing and gypsiferous dark mudstone in Wuyang and Xiangcheng sags.Most of the mudstones are good source rocks and thermally immature or less matured(R o=0 3%～0 7%).Kerogen types are mostly type Ⅱ.Twenty wells have been drilled,and evidences of oil and gas are found in 11 wells,but only a little crude oil is produced through well-testing.It is estimated that the total oil resource is about 1×10 8 t and 60 percent of that is immature oils(0 6×10 8 t).Comparing with the similar oil-bearing basin,the Jianghan Basin,it is shown that Wuyang and Xiangcheng sags have the geological conditions of forming hydrocarbon accumulation,and are expected to find small or medium commercial oil pools.
出处
《现代地质》
CAS
CSCD
2001年第3期302-308,共7页
Geoscience
基金
中国石油天然气总公司"九五"重点科技攻关项目 ( 960 0 0 6 16)
