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     Research Journal of Applied Sciences, Engineering and Technology

    Abstract
2013(Vol.5, Issue:19)
Article Information:

An Analysis Method of Gas Injection Development Effect in the Single well Fractured-Vuggy System

Baohua Chang, Wei Xiong, Daiyu Zhou, Shusheng Gao, Xingliang Deng and Junfeng Liu
Corresponding Author:  Baohua Chang 
Submitted: September 07, 2012
Accepted: October 25, 2012
Published: May 10, 2013
Abstract:
In this study, we propose an analysis method of gas injection development effect in the single well fractured-vuggy system. The fractured-vuggy reservoir has a complex spatial structure, oil-water relations and connectivity, of which single well fractured-vuggy system is a simpler model. Aiming at the problems of low recovery rate and production difficulties, based on the elasticity theory and fluid mechanics in porous, the elastic expansion energy and oil-water interface change before and after gas injection in the single well developing fractured-vuggy system are analyzed. And a theoretical mode of development effect after gas injection is built. Then an example analysis of Tarim Oilfield is conducted. The results show that: mining after repeated gas injection, water cut significantly decreased, yield and water free production increases gradually and the replacement rate increases with the gas injection. This shows that gas injection can effectively inhibit the rise of oil-water interface and improve the development effect of fractured-vuggy system.

Key words:  Cave, effect, fracture-vuggy, gas injection, recovery, ,
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Cite this Reference:
Baohua Chang, Wei Xiong, Daiyu Zhou, Shusheng Gao, Xingliang Deng and Junfeng Liu, . An Analysis Method of Gas Injection Development Effect in the Single well Fractured-Vuggy System. Research Journal of Applied Sciences, Engineering and Technology, (19): 4615-4618.
ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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