期刊
ENERGY
卷 36, 期 11, 页码 6609-6616出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2011.09.001
关键词
Shale gas; Reservoir characterisation; Southern Sichuan Basin; China
资金
- Natural Science Foundation of China [41072117]
- Major State Basic Research Development Program of China (973 Program) [2012CB214702]
- National Natural Science Foundation of China [40730422]
The Lower Silurian Longmaxi Formation is an organic-rich (black) mudrock that is widely considered to be a potential shale gas reservoir in the southern Sichuan Basin (the Yangtze plate) in Southwest China. A case study is presented to characterise the shale gas reservoir using a workflow to evaluate its characteristics. A typical characterisation of a gas shale reservoir was determined using basset sample analysis (geochemical, petrographical, mineralogical, and petrophysical) through a series of tests. The results show that the Lower Silurian Longmaxi Formation shale reservoir is characterised by organic geochemistry and mineralogical, petrophysical and gas adsorption. Analysis of the data demonstrates that the reservoir properties of the rock in this region are rich and that the bottom group of the Longmaxi Formation has the greatest potential for gas production due to higher thermal maturity, total organic carbon (TOC) enrichment, better porosity and improved fracture potential. These results will provide a basis for further evaluation of the hydrocarbon potential of the Longmaxi Formation shale in the Sichuan Basin and for identifying areas with exploration potential. (C) 2011 Elsevier Ltd. All rights reserved.
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