Prospect of Middle Ordovician Yanxi Formation Black Shale in South Hunan Province

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Authors

  • Li Zhiwen
     School of Geoscience and Info- Physics, Central South University, Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, (Central South University), Ministry of Education, 410083 ,CN
  • Guo Jianhua
     Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, (Central South University), Ministry of Education, 410083 ,CN

Keywords:

Middle Ordovician, Yanxi formation, shale gas, sedimentary evolution.

Abstract

Black shale is widely distributed in Central Hunan. However, due to low exploration level and lack of petroleum geological data, it lacks complete evaluation.Based on the comprehensive investigation and analysis of the geological characteristics of Yanxi formation (O2) and the sedimentary evolution of Ordovician in this area. it is found that the black shale of O2 is characterized by great thickness (from 40 m to 135 m) and high level of organic carbon (from 0.87% to 6.20 %). Based on illite crystallinity (IC) analysis, the thermal maturity of O2 is at the stage of mature to overmature (1.83%<Ro<3.17%, and the average value is 3.15%), and the epizone (0.12<IC<0.252, mostly 0.12 ~ 0.192) is not beneficial for producing gases. However, the O2 is still a gas-bearing stratum with great potential of shale gas, and the difficulty of the shale gas exploration in this area lies in the elusive and complicated structure.

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Published

2022-10-20

How to Cite

Zhiwen, L., & Jianhua, G. (2022). Prospect of Middle Ordovician Yanxi Formation Black Shale in South Hunan Province. Journal of Mines, Metals and Fuels, 67(9), 424–430. Retrieved from https://www.informaticsjournals.com/index.php/jmmf/article/view/31651

Issue

Volume 67, Issue 9, September 2019

Section

Articles

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Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

 

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