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Edition and Publication:
< Natural Gas and Oil > Editorial Department
Hosted by:
China Petroleum Engineering & Construction Corporation Southwest Company
Authorized by:
China Petroleum Engineering & Construction Corporation
Co-hosted by:
Overseas Research Center of Research Institute of Petroleum Exploration and Development
Editor in Chief:
Du Tonglin
Vice Editor in Chief:
Tang Xiaoyong,Pu Liming
Address:
No.6, Shenghua Road, High-tech District, Chengdu, Sichuan, China
Postal Code:
610041
Tel:
028-86014709
028-86014500
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cnpc-ngo@cnpc.com.cn
Issue:ISSN 1006-5539
CN 51-1183/TE

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Numerical Simulation Study on Shale Gas Volume Fracturing

Author of the article:Zhang Yani, Ma Xinfang

Author's Workplace：China University of Petroleum

Key Words：Shale gas; Productivity prediction; Wire-mesh model; Optimization of fracture parameters; Formation parameters

Abstract：In order to establish model for reasonably simulating horizontal well productivity in shale gas volume fracturing and study the effect of fracture parameters and formation property on fractured well productivity, the reservoir numerical simulation method is used to establish the productivity simulation and prediction model of shale gas horizontal well volume fracturing. The model is based on basic parameters from one shale gas well, the ellipsoid-like wire-mesh model is used to simulate complex fracture network and dissolved gas in immobile oil is used to simulate the absorbed gas in shale gas. Through using the model, analyzed is the effect of such parameters on productivity as shale gas horizontal well volume fracturing reservoir transformation, mesh fracture conductivity and transformation volume complexity and studied is the effect of formation permeability heterogeneity on transformed wells. Results show that the model can efficiently simulate actual productivity of volume fracturing in shale gas horizontal wells, the larger the transformation volume is, the stronger the fracture conductivity is; the smaller the crack spacing is, the higher the shale gas horizontal well productivity is. Formation permeability anisotropy has small effect on gas well productivity. This model has positive significance for predicting shale gas horizontal well volume fracturing development effect.