Optimal Design of Artificial Fracture Network for Shale Gas Volume Stimulation

doi:10.3969/j.issn.1006-6535.2022.05.022

Abstract

Abstract: Due to the tight reservoirs in the Weiyuan shale gas block, the local development of natural fractures, and the strong reservoir heterogeneity, the conventional horizontal well staged fracturing technology cannot meet the productivity demand. To address the problem, taking Wei AH1 platform as an example, an integrated fracturing model for the Wei AH1 platform was established based on the technical idea of integrated geological engineering, geological property model and geomechanical model. The model was used to analyze the fracturing displacement, fracturing fluid volume, sand ratio, number of clusters, proppant ratio and injection method, and to determine the optimal parameters of fracturing operation. The research results were applied to 8 wells on the Wei AH1 platform, and the daily gas production was increased by 30% compared with that before the fracturing. This research can provide technical support for the integrated development of shale gas in Weiyuan Area.

Key words: shale gas, volume fracturing, artificial fracture network, support area, Weiyuan Area

CLC Number:

TE355

Jiang Hai, Xiao Yang, Wang Dong, Liu Ziping, Wang Jiahao, Zhao Di, Zou Longqing. Optimal Design of Artificial Fracture Network for Shale Gas Volume Stimulation[J]. Special Oil & Gas Reservoirs, 2022, 29(5): 154-160.

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