谭庄-沈丘凹陷中下侏罗统油气资源前景分析  

An analysis of hydrocarbon potentials of Mid - Lower Jurassic in Tanzhuang- Shenqiu sag

作　　者：蒋永福[1] 邓世英[2] 黄锦珍 朱红宇[2] 

机构地区：[1]中国地质大学研究生院,湖北武汉430074 [2]河南石油勘探开发研究院 [3]河南石油勘察设计院

出　　处：《河南石油》2005年第2期20-22,25,i002,共5页Henan Petroleum

摘　　要：通过对谭庄-沈丘凹陷周参10等井的油／岩全系列生物标记化合物、轻烃组成、碳同位素组成等精 细对比,发现凹陷内产自下白垩统和古近系的油气为源自下白垩统和中下侏罗统的混源油,证实中下侏罗 统为区内成藏的有效供烃层系之一,从而厘定出一套新的有效烃源岩--中下侏罗统煤系地层。同时,在 烃源岩特征分析的基础上,评价了谭庄-沈丘凹陷中下侏罗统的油气资源潜力。Detailed correlation of oil/rock whole series biomark-er, light hydrocarbon components and carbon isotope components in several wells, including Zhoucan 10 well, in Tanzhuang - Shenqiu sag reveals that oil and gas produced from Lower Cretaceous and Eogene are oils of mixed origin sourced from Lower Cretaceous and Mid -Lower Jurassic. It is proved that Mid - Lower Jurassic is one of the effective hydrocarbon - supplying strata series in the study area. Thus the Mid - Lower Jurassic coal measure strata are effective source rocks. Hydrocarbon potentials of Mid - Lower Jurassic in Tanzhuang - Shenq-iu sag are also evaluated based on analysis of source rock characteristics.

关 键 词：下侏罗统 厘定 下白垩统 油气资源 煤系地层 有效烃源岩 古近系 凹陷 混源油 成藏 

分 类 号：TE122[石油与天然气工程—油气勘探] P619.14[天文地球—矿床学]