Exploration Potential of Shale Gas in Huayuan Block,Northwest Hunan Province

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  • 1.China Energy Reserve Corporation,Beijing 100107,China; 2.Tongren Sino-Energy Natural Gas Corporation,
    Tongren 554300, China; 3.Beijing Sino-Shale Gas Engineering Corporation,Beijing 100107, China;
    4.College of Energy Resources,Chengdu University of Technology, Chengdu 610059, China

Received date: 2013-05-25

  Revised date: 2013-12-28

  Online published: 2014-04-10

Abstract

The shale gas resources are rich in Upper Yangtze platform,especially in the Niutitang Formation.Huayuan shale gas block is located within the shale gas abundant play of Niutitang Formation in Upper Yangtze platform.Based on the stratigraphic correlation,reservoir analysis and geochemical analysis of source rock samples and in combination with previous study results,the structure,source rock and reservoirs characteristics of the Niutitang Formation in Huayuan block was systematically studied.The distribution range of the Niutitang Formation,reservoir physical property and thickness of source rocks were mapped.Furthermore,the resource volume of shale gas was calculated by using the gas content data obtained from testing in well Yuke 1 and well Cenye 1.The kerogen types of the Niutitang Formation in the Huayuan shale gas block wereⅠand Ⅱ1.With average values of TOC and R O of 3.52% and 3.58%,respectively,reflecting the source rock has entered intoover-maturity stage.The reservoirs characteristics are low porosity-ultralow permeability and high specific surface area.The recoverable resource volume of shale gas is estimated up to 3.18 billion cubic meters.The area from Minle to Longzhai,in the middle-upper of the Huayuan block can be selected for the further exploration and evaluation.

Cite this article

LENG Ji-gao,HAN Jian-hui,LI Fei,LI Peng,MENG Lan . Exploration Potential of Shale Gas in Huayuan Block,Northwest Hunan Province[J]. Natural Gas Geoscience, 2014 , 25(4) : 624 -631 . DOI: 10.11764/j.issn.1672-1926.2014.04.624

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