河南舞阳和襄城两凹陷未熟—低熟油形成模式及勘探前景  

IMMATURE OILS FORMATION MODELING AND EXPLORATION POTENTIAL IN WUYANG AND XIANGCHENG SAGS, HENAN PROVINCE

作　　者：何会强[1] 李永林[1] 乔桂林[2] 古哲[2] 熊保贤[1] 

机构地区：[1]中国地质大学能源系,北京100083 [2]河南石油勘探局研究院,河南南阳473132

出　　处：《现代地质》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)

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.

关 键 词：核桃园组 未熟-低熟油 烃源岩 生烃模式 资源量 河南 有机质丰度 

分 类 号：P618.13[天文地球—矿床学]