An improved rate-transient analysis model of multi-fractured horizontal wells with non-uniform hydraulic fracture properties
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energies-11-00393.pdf
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Author(s)
He, Youwei
Cheng, Shiqing
Rui, Zhenhua
Qin, Jiazheng
Fu, Liang
Shi, Jianguo
Wang, Yang
Li, Dingyi
Patil, Shirish
Yu, Haiyang
Date Issued
February 8, 2018
Journal
Energies
Publisher
Multidisciplinary Digital Publishing Institute
Citation
He, Youwei, et al., "An improved rate-transient analysis model of multi-fractured horizontal wells with non-uniform hydraulic fracture properties." Energies 11, 2: no. 393 doi 10.3390/en11020393 ©2018 Author(s)
Version
Final published version
Abstract
Although technical advances in hydraulically fracturing and drilling enable commercial production from tight reservoirs, oil/gas recovery remains at a low level. Due to the technical and economic limitations of well-testing operations in tight reservoirs, rate-transient analysis (RTA) has become a more attractive option. However, current RTA models hardly consider the effect of the non-uniform production on rate decline behaviors. In fact, PLT results demonstrate that production profile is non-uniform. To fill this gap, this paper presents an improved RTA model of multi-fractured horizontal wells (MFHWs) to investigate the effects of non-uniform properties of hydraulic fractures (production of fractures, fracture half-length, number of fractures, fracture conductivity, and vertical permeability) on rate transient behaviors through the diagnostic type curves. Results indicate obvious differences on the rate decline curves among the type curves of uniform properties of fractures (UPF) and non-uniform properties of fractures (NPF). The use of dimensionless production integral derivative curve magnifies the differences so that we can diagnose the phenomenon of non-uniform production. Therefore, it’s significant to incorporate the effects of NPF into the RDA models of MFHWs, and the model proposed in this paper enables us to better evaluate well performance based on long-term production data. Keywords: rate-transient analysis; multi-fractured horizontal wells; type curve; production performance evaluation
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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DOI of Published Version
https://doi.org/10.3390/en11020393
