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Pore Characteristics and Gas Released by Crush Methods of Wufeng‐Longmaxi Shale in the Northwest of Hubei Province, China
Author(s) -
WANG Qingtao,
SHEN Chenchen,
CHEN Qing,
ZHANG Li,
LU Hong
Publication year - 2015
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12302_40
Subject(s) - shale gas , china , mining engineering , geology , gas explosion , oil shale , geochemistry , forensic engineering , archaeology , engineering , geography , paleontology
Wufeng-Longmaxi organic-rich shale in the Late Ordovician-Early Silurian is widely distributed in South China (Qiu et al., 2013), which is also the target formations of shale gas industry. Until now, the investigations into shale gas reservoirs is mainly conducted in eastern and southern part of Sichuan Basin(Huang et al., 2012; Liu et al., 2011; Zhao et al., 2014), while few research is done in the west part of Hubei and Hunan province(Qiu et al., 2013). The pore characteristics of these organic-rich shale samples from shallow drilling well in Shennongjia area were preliminarily evaluated based on the analysis results of of rock-eval, elemental analysis, low pressure nitrogen/ carbon dioxide adsorption measurements. Chemical and stable carbon isotopic compositions of gases released by crush methods were also concerned to compare the gas chemistry between the produced gas and crushed-rock gas from these organic-rich mudrocks.