Controlling Factors and Characteristic of Carboniferous Volcanic Reservoir&nbsp; Fractures of Zhongguai Uplift in Northwestern Margin of Junggar Basin

Fan Cun-hui, Qin Qi-rong, Zhi Dong-ming, Yao Wei-jiang, Yuan Yun-feng, Zhao Ling

doi:10.11764/j.issn.1672-1926.2012.01.81

2012 , Vol. 23 >Issue 1: 81 - 87

DOI: https://doi.org/10.11764/j.issn.1672-1926.2012.01.81

Controlling Factors and Characteristic of Carboniferous Volcanic Reservoir Fractures of Zhongguai Uplift in Northwestern Margin of Junggar Basin

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1.Southwest Petroleum University,Chengdu 610500,China；
2.Institute of Geophysics,Research Institute of Exploration and Development,Xinjiang Oilfield Company,PetroChina,Urumqi 834000,China；
3.Engineering Supervision Center,Southwest Oil and Gas Company,SINOPEC,Deyang 618000,China

Received date: 2011-08-08

Revised date: 2011-10-02

Online published: 2012-02-10

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Abstract

Carboniferous volcanic reservoir fractures are the main flowing channel and effective storage space for the reservoir in Zhongguai uplift.There are original fractures,secondary fractures and artificial induced fractures.High-angle unfilled or half\|filled shear fractures develop best among them,which are the key types of factures.The main orientations of fractures are near N-E and E-W,which have good validity because of the consistent or sharp angle with the current maximum principal stress direction.The tectonic fractures are mainly formed in stage of Hercynian tectonic movement.The influence factors of the fractures development mainly include the tectonic position,rock types,rock stratum,and etc.The fractures in different lithology show different development degrees;there is a linear relationship between the develop degree of fractures and the tectonic position.Fracture-developed zone presents banded distribution along fault belt.Layer thickness plays less apparent effect on the fracture development because of poor stratification of volcanic reservoir.The tectonic position and rock type are the key controlling factors of fracture development.
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Key words： Zhongguai uplift; Volcanic reservoir; Fracture; Controlling factor.

Cite this article

Fan Cun-hui, Qin Qi-rong, Zhi Dong-ming, Yao Wei-jiang, Yuan Yun-feng, Zhao Ling . Controlling Factors and Characteristic of Carboniferous Volcanic Reservoir Fractures of Zhongguai Uplift in Northwestern Margin of Junggar Basin[J]. Natural Gas Geoscience, 2012 , 23(1) : 81 -87 . DOI: 10.11764/j.issn.1672-1926.2012.01.81

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