Characteristics of the Shale Gas Reservoir in the Lower Cambrian
Hetang Formation，Northeastern Jiangxi，China

doi:10.11885/j.issn.1674-5086.2013.08.29.08

Abstract

Abstract:

From geochemistry，petrology-physical properties and characteristics of the reservoir space，the shale reservoir
characteristics are studied by microscopic section，scanning electron microscopy and X-ray diffraction experimental analysis of
44 black shales from the lower Cambrian Hetang Formation in northeastern Jiangxi. The results show that the Hetang Formation
shale ranging from 22.1 to 735.0 m，single layer thickness ranges from 19.59 to125.16 meters in the study area. Organic matter
content is high，range from 3.32% to 11.40%，averaging 5.75%，The maturity is high，between 2.35%～4.90%，belonging to a
mature stage. Mineral composition mainly includes quartz，clay minerals，calcite，pyrite and marcasite and its brittle mineral
content is between 18.95%～51.84% with an average content of 40.97%. The microporosity is well developed. The Hetang
Formation has some differences compared to five commercial shale gas producing areas in the U. S. It is thick and contains
brittle mineral. Organic matter content and gas content is high. The adverse conditions is that it is buried deeply and the maturity
is too high.

Key words: northeastern Jiangxi, the lower Cambrian, Hetang Formation, shale gas, reservoir characteristics

Wang Ran1, Sang Shuxun1, Liu Shuigen2, Yu Kuankun2, Du Yi1. Characteristics of the Shale Gas Reservoir in the Lower Cambrian
Hetang Formation，Northeastern Jiangxi，China[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2013.08.29.08.

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