Exploration Potential of the Yanxi Formation in Middle Ordovician of Hunan Province

Jump To References Section

Authors

  • Zhiwen Li
     School of Geoscience and Info-Physics, Central South University , Changsha, Hunan 410083 ,CN
  • Guo Jianhua
     School of Geoscience and Info-Physics, Central South University , Changsha, Hunan 410083 ,CN
  • Zongxiu Wang
     School of Geoscience and Info-Physics, Central South University , Changsha, Hunan 410083 ,CN
  • Zhanghu Wang
     School of Geoscience and Info-Physics, Central South University , Changsha, Hunan 410083 ,CN

Keywords:

Middle Ordovician, Yanxi formation, shale gas, central Hunan, melange

Abstract

A organic rich black shale was widely developed in the central Hunan province, because of the low degree of exloration and lack of petrolum geologic data, there was not a compelete evaluation on this shale. Through comprehensively investigation and analysis of the geological characteristics of Yanxi formation (O2 ) and sedimentary evolution of the Ordovivian in this area, it is found that the black shales of O2 are characterized by widely distribution, great thickness (ranging from 40 to 135m) and high level of organic carbon (ranging from 0.87% to 6.20%). Compared to the discovery area, the thermal maturity and the illite crystallinity (IC) analysis of O2 is at the mature to over mature stage (1.83%<Ro<3.17%, average value is 3.15%) and epizone (0.12<IC< 0.25°Δ2θ, mostly 0.12~0.19 °Δ2θ) which are not benefit for generating gas. However, the O2 still is a gas-bearing strata with great potential for shale gas. The type of cental Hunan basin transformed during the late Ordovician, when it formed a regional melange with north-ward thrusting and south-ward thicken fault blocks. The most difficult point of the shale gas exploration in this area is the elusive and complicated structure.

Downloads

Download data is not yet available.

Published

2022-10-20

How to Cite

Li, Z., Jianhua, G., Wang, Z., & Wang, Z. (2022). Exploration Potential of the Yanxi Formation in Middle Ordovician of Hunan Province. Journal of Mines, Metals and Fuels, 67(5), 279–284. Retrieved from http://www.informaticsjournals.com/index.php/jmmf/article/view/31555

Issue

Volume 67, Issue 5, May 2019

Section

Articles

License

Creative Commons License

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

 

References

"U.S. Energy Information Administration", Eia.gov. from https: //www.eia.gov/beta/international/, Retrieved 2013-08-06.

Rogers M.A., McAlary J.D., Bailey N.J.L. (1974): Significance of reservoir bitumens to thermal-maturation studies, Western Canada Basin. AAPG Bulletin, Vol.8, No.9, pp. 1806-1824.

Xiao, X. (1991): The snignificance of bitumen reflectance as a mature parameter of source rocks. Acta Sedimentologica Sinica, S1.

Zhang Z, Chen L, Liu J, et al. (2015): Geological Condition to form shale-gas reservoirs of lower Cambrian Niutitang Formation, Baojing area, Hunan province. Natural Gas Exploration & Development, Vol. 38, No. 1, pp. 9-12

Lin T, Zhang J, Bo L, et al. (2014): Shale gas accumulation conditions and gas-bearing properties of the Lower Cambrian Niutitang Formation in Well Changye1, northwestern Hunan. Acta Petrolei Sinica, Vol. 35, NO. 5, pp. 839-846.

Pollastro R M, Jarvie D M, Hill R J, et al. (2007): Geologic framework of the Mississippian Barnett Shale, Barnett- Paleozoic total petroleum system, Bend archFort Worth Basin, Texas. AAPG bulletin, Vol. 91, No. 4, pp. 405-436.

Milici R C, Swezey C S. US Geological Survey, (2014): Assessment of Appalachian basin oil and gas resources: Devonian gas shales of the Devonian Shale-Middle and Upper Paleozoic Total Petroleum System: Chapter G. 9 in Coal and petroleum resources in the Appalachian basin: distribution, geologic framework, and geochemical character.

Charvet, J., Shu, L., Faure, M., Choulet, F., Wang, B., & Lu, H., et al. (2010): Structural development of the lower paleozoic belt of south china: genesis of an intracontinental orogen. Journal of Asian Earth Sciences, Vol. 39, NO. 4, pp. 309-330.

Zhang G W, Guo A L, Wang Y J, et al. (2013): Tectonics of South China Continent and its implications. Science China Earth Science, Vol. 56, No.11, pp. 1804-1828.

Van Krevelen D W. (1950): Graphical-statistical method for the study of structure and reaction processes of coal. Fuel, Vol. 29, No. 12, pp. 269-284.

Kubler B. (1966): La cristallinité de l'illite et les zones tout à fait supérieures du métamorphisme. Baconnière.

Roberts B, Morrison C, Hirons S. (1990): Low grade metamorphism of the Manx Group, Isle of Man: a comparative study of white mica ‘crystallinity’ techniques. Journal of the Geological Society, Vol.147, No. 2, pp. 271-277.

Jie Li, Jianhua Guo, Zongxiu Wang, Zhanghu Wang, (2017): Geological and geochemical characteristics of black shale in yanxi formation of middle ordovician in central hunan, Chemical Engineering Transactions, Vol. 59, pp. 979-984.

Jie Li, Jianhua Guo, Zongxiu Wang, Chensheng Liu, (2017): Geochemical and sedimentary setting of the ordovician in central hunan, Chemical Engineering Transactions, Vol. 59, pp. 997-1002.

Yang J., Yi F.C. (2005): Genesis andorganic carbon /sulphur characteristics of the lower Cambrian black shale series in Guizhou-Hunan. Chinese Journal of Geology, Vol. 40, No. 4, pp. 457-463.

Zhang D.W., Li Y.X., Zhang J.C. (2012): Natianal wide shale gas resource potential survey and assessment, Beijing: Geological Publishing House. Vol.32, No.4, pp. 6-8.

Zhang J.C., Nie H.K., Xu B., Jiang S.L., Zhang P.X., Wang Z.Y. (2008): Geological condition of shale gas accumulation in Sichuan Basin, Natural Gas Industry, Vol.28, No. 2, pp. 151-156.

Zhong T.X. (2012): Characteristics of pore structure of marine shales in South China. Natural Gas Industry, Vol.32, NO.9, pp.1-4.