黔西南龙潭组有机地球化学有利区展布特征

摘要

Shale organic geochemical research is an important part of shale gas exploration and development.In this study,the organic shale of Longtan Formation in the Upper Permian Longxan Formation was studied by using total organic carbon content (TOC),kerogen type identification,coal rock component observation,vitrinite reflectance (Ro) test And other means,the organic analysis of the characteristics of the sample.The results showed that the TOC of the study area was 0.90%~18.87%,the average was 6.78%,the content of organic matter was higher,the kerogen type was type Ⅱ and type Ⅲ kerogen,Ⅱ type was dominated,Ro 0.86%~2.91%,an average of 2.02%,with a high maturity,the area of the area of 250 km2,the core area of 21356 km2.%页岩有机地球化学研究是页岩气勘探开发的重要内容,本次研究以黔西南上二叠统龙潭组富有机质页岩为研究对象,利用总有机碳含量(TOC)测定、干酪根类型鉴定、煤岩组分观察、镜质组反射率(Ro)测试等手段,对样品的有机地化特征进行分析.结果表明研究区TOC为0.90%~18.87%,平均6.78%,具有较高的有机质含量,干酪根类型为Ⅱ型和Ⅲ型干酪根,以Ⅱ型为主,煤岩组分以壳质组为主,Ro为0.86%~2.91%,平均2.02%,具有较高的成熟度,远景区面积为250km2,核心区面积为21356km2.