南阳凹陷陆相页岩油形成条件及勘探潜力分析  

Research on continental shale oil forming conditions and exploration potential analysis in Nanyang depression

作　　者：杨傲然[1] 贾艳雨[2] 谭静娟[2] 黄庆[2] 尹安[2] 余志远[2] 

机构地区：[1]中国石油大学(华东),山东青岛266000 [2]中国石化河南油田分公司石油勘探开发研究院

出　　处：《石油地质与工程》2013年第3期8-11,145,共4页Petroleum Geology and Engineering

摘　　要：参照泌阳凹陷页岩油形成条件研究方法对南阳凹陷页岩油形成条件进行分析,综合研究表明,南阳凹陷核桃园组泥页岩发育,分布范围广,单层厚度大;埋藏深度适中;有机质类型好,富有机质泥页岩发育层段有机质丰度高,热演化程度适中,主要处于生油阶段;脆性矿物含量高,可压性好;微孔隙微裂缝发育,储层物性好;泥页岩发育区断层不发育,保存条件好,具备陆相页岩油形成的有利条件。南阳凹陷深湖-半深湖相多口井在泥页岩段钻遇良好油气显示,其中红12井更是在泥页岩层获得一定工业油流,证实了南阳凹陷页岩油层的存在。初步估算南阳凹陷页岩油资源量为9 000×104 t,表明南阳凹陷具备良好的页岩油勘探潜力。从有机质丰度、气测异常情况来看,纵向上Eh23和Eh31层段更有利于页岩油的富集,平面上红12井区可能是最有利地区。With reference to the research methods of shale oil formation in Biyang depression,the comprehensive research on shale oil formation in Nanyang depression has been carried out.The research results indicate shale was well developed in Hetaoyuan formation of Nanyang depression,with the characteristics of wide distribution,big thickness of singer layer,moderate buried depth,good organic matter type,high organic matter abundance,moderate thermal evolution degree,high brittle minerals contents,good compressibility,well developed micropores and microfractures and good reservoir physical properties.In shale well developed area,the faults are not developed but the preservation condition is good,being of the favorable conditions for shale oil formation.Multiple wells in deep-half deep lacustrine facies drilled good hydrocarbon shows in shale section,among which Hong-12 well acquired commercial oil flow,confirming shale oil formation existence in Nanyang depression.By using oil saturation method,the shale oil resources in Nangyang depreesion is about 2.85×108 t,which indicates good shale oil potential in Nanyang depression.In view of organic matter abundance and abnormal gas logging,Eh_23 and Eh_31 are favorable for shale oil enrichment and Hong 12 well is likely to be the most favorable area of oil shale exploration.

关 键 词：南阳凹陷 核桃园组 页岩油 资源量 勘探潜力 

分 类 号：TE122.9[石油与天然气工程—油气勘探]