泌阳凹陷湖相白云岩油气储集性能及勘探潜力  

Hydrocarbon Reserving Performance and Exploration Potential of Lake Facies Dolomite in Biyang Depression

作　　者：伏卫东[1] 陈祥[1] 孙凤华[1] 王普贵[1] 余培湘[1] 张宏[1] 

机构地区：[1]河南油田分公司勘探事业部,河南南阳473132

出　　处：《江汉石油学院学报》2002年第1期8-10,共3页Journal of Jianghan Petroleum Institute

摘　　要：泌阳凹陷白云岩发育于深凹区核二段及核三段上亚段 ,形成于浅湖相和较深湖相环境 ,岩石类型以泥质白云岩、铁白云岩为主 ,成岩过程中发生了压实、溶解、充填及成岩破裂等作用 ,形成了以溶蚀孔洞为主的储集空间 ,与多种类型的裂缝相配置 ,构成互为连通的孔洞缝网络体系 ,形成白云岩油气藏的主要储集层。白云岩沉积规模较大 ,且油源丰富 ,具有较大的勘探潜力。Dolomites in Biyang depression is occurred in the member Eh 2 and upper submember Eh 3,including mainly argillaceous dolomites and ferrodolomites.They were formed in shallow and deeper lake facies environments,and experienced compaction, dissolution,filling and diagenetic fracturing.The dissolution caverns formed in diagenetic stage are major reservoir pores,and constitute a intercommunication pore fracture network system with various kinds of fractures.The dolomites in the depression have good exploration potential because of larger sedimentary thickness and better reservoir behavior.

关 键 词：泌阳凹陷 湖相 白云岩 油气储集性能 勘探潜力 湖泊环境 储集层特征 油气勘探 

分 类 号：P618.13[天文地球—矿床学]