Production Simulation of Fractured Horizontal Well with Non-uniform Space Distribution of Fracture Conductivity in Shale Gas Reservoir

doi:10.11885/j.issn.16745086.2020.03.09.01

Abstract

Abstract: The universal assumption in existing production prediction models of fractured horozontal well for shale gas reservoir is the evenly distribution of fracture conductivity. Therefore, there is a large deviation between the prediction production and real production. In order to improve the accuracy of production prediction for fractured gas well, a new model has been established based on point sink and superposition principle with consideration of the characteristic of non-uniform distribution of fracture conductivity. Numerical simulation studies show that the non-uniform distribution of fracture conductivity has a greater impact on production compared with the conventional model. Intensifying the fracture conductivity at nearside of wellbore with concave distribution could improve the yield after hydraulic fracturing when the dimensionless conductivity is small. With the increase of dimensionless conductivity, the increasing amplitude of yield decreases. Due to the limitation of supplying capacity of gas reservoir, the yield of gas well is similar under different patterns of conductivity distribution when the fracture conductivity reaches a certain level.

Key words: fractured horizontal well, distribution of fracture conductivity, production simulation, point sink, superposition principle, fracture discrete

CLC Number:

TE357

YANG Zhaozhong, LIAO Zijia, LI Xiaogang, ZHU Liyong, CHEN Hao. Production Simulation of Fractured Horizontal Well with Non-uniform Space Distribution of Fracture Conductivity in Shale Gas Reservoir[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2021, 43(3): 93-100.

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