Reservoir-Forming Conditions of Shale Gas in&nbsp; Ziliujing Formation of Yuanba Area in Sichuan Basin

GUO  Tong-Lou, LI  Yu-Ping, WEI  Zhi-Hong

doi:10.11764/j.issn.1672-1926.2011.01.1

Natural Gas Geoscience >

2011 , Vol. 22 >Issue 1: 1 - 7

DOI: https://doi.org/10.11764/j.issn.1672-1926.2011.01.1

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Reservoir-Forming Conditions of Shale Gas in Ziliujing Formation of Yuanba Area in Sichuan Basin

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SINOPEC Exploration Southern Company， Chengdu 610041，China

Received date: 2010-09-21

Revised date: 2010-12-10

Online published: 2011-02-10

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Abstract

According to the ideas of exploration and the reservoir accumulation characteristics of shale gas，we have collected shale gas data in Ziliujing Formation from a batch of exploratory wells in Yuanba area of Sichuan basin. And industrial gas flow has been discovered in three wells of the exploratory wells. Research shows that Ziliujing Formation in Yuanba area is formed in shallow lake-semi-deep lake environment. Thick dark shale，high content of organic carbon and moderate thermal maturity of organic matter which is at the peak of gas production are developed in Ziliujing Formation. Moreover，quartz content is generally more than 60% in the mineral composition of shale, while clay content is below 30%. Gas content is high in shale of Ziliujing Formation, which is the basic condition for the formation and exploration of shale gas. And Ziliujing Formation is the favorable strata for the shale gas exploration.

Key words： Shale gas; Ziliujing Formation; Reservoir accumulation; Yuanba area; Sichuan basin.

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GUO Tong-Lou, LI Yu-Ping, WEI Zhi-Hong . Reservoir-Forming Conditions of Shale Gas in Ziliujing Formation of Yuanba Area in Sichuan Basin[J]. Natural Gas Geoscience, 2011 , 22(1) : 1 -7 . DOI: 10.11764/j.issn.1672-1926.2011.01.1

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