谭庄-沈丘凹陷下白垩统油气勘探突破关键因素分析  

Analysis on Key Factors of Lower Cretaceous Oil Exploration in Tanzhuang-Shenqiu Depression

作　　者：杜建波[1] 黄晓[2] 马荣芳[1] 谢其锋[1] 何明喜[1] 

机构地区：[1]河南油田分公司石油勘探开发研究院,河南南阳473132 [2]重庆大学城市与环境工程学院,重庆400045

出　　处：《石油天然气学报》2008年第05X期171-175,共5页Journal of Oil and Gas Technology

基　　金：国土资源部油气资源战略选区项目(XQ-2007-02)

摘　　要：谭庄-沈丘凹陷位于周口坳陷中带,是在华北古生界台地基础上发育的中新生代沉积凹陷,面积2830km2,是目前周口坳陷最有利的含油气区,主要勘探层系为下白垩统。历经五十余年勘探,虽多口探井于下白垩统见到良好的油气显示,但一直未能取得实质性突破。通过对谭庄-沈丘凹陷典型见油气探井的解剖及综合评价,进一步明确了区内下白垩统烃源岩、盖层发育,生运聚配置关系良好,并指出了储层是制约该区油气勘探突破的关键因素,从而为谭庄-沈丘凹陷下步油气勘探指出了方向。Tanzhuang-Shenqiu Depression located in the middle of Zhoukou Sag and was a sedimentary depression in Meso-Cenozoic based on the Paleozoic platform of the North China.Tanzhuang-Shenqiu depression was the best petrolifierous region of ZHoukou Sag and the lower Cretaceous was the main exploration area with an area of 2830km2.In Tanzhuang-Shenqiu Depression substantive breakthroughs was not achieved by the exploration of more than 50 years,better oil-gas shows were obtained in the lower Cretaceous exploration wells.The source rocks,sealing rocks and relation of generation,migration are better in the Tanzhuang-Shenqiu Depression by the analysis of oil-gas wells,and the reservoir is the key factor restricted the exploration breakthroughs,it provides the direction of oil exploration in Tanzhuang-Shenqiu depression.

关 键 词：谭庄-沈丘凹陷 下白垩统 油气勘探 关键因素 

分 类 号：P618.13[天文地球—矿床学]