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Arabian Journal for Science and Engineering
Published in: Arabian Journal for Science and Engineering 9/2020

21-05-2020 | Research Article-Petroleum Engineering

Model of Effective Width and Fracture Conductivity for Hydraulic Fractures in Tight Reservoirs

Authors: Shan Jiang, Peng Chen, Min Yan, Botao Liu, Hong Liu, Hao Wang

Published in: Arabian Journal for Science and Engineering | Issue 9/2020

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Abstract

Hydraulic fracturing technology is widely used in the development of tight reservoirs. Hydraulic fracture closure highly impacts oil and gas production in tight reservoirs, and a quantitative description of the effective width and fracture conductivity has a guiding significance for fracturing design and productivity prediction. In this paper, based on the mechanical characteristics of proppants in hydraulic fracturing, a fracture width model is first established for sandstone and shale reservoirs, and the effect of the closing pressure on the rock mechanics parameters of proppants is considered. Then, by the changes in fracture width and proppant permeability, a fracture conductivity model is built. Finally, the models are verified with existing experimental data, and are applied to analyze the influence of relevant parameters on the effective width and fracture conductivity of hydraulic fractures. Fracture closure is primarily affected by proppant deformation and embedment. An increase in the proppant elastic modulus can reduce proppant deformation and avoid fracture closure. A fracture containing large proppant more readily closes during the production process, and the closing pressure has a considerable effect on the proppant rock mechanical parameters, which can prevent the fracture from closing to maintain its conductivity. In this study, fracture closure and its conductivity are predicted, which is conducive to the production of tight reservoirs.
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Metadata
Title
Model of Effective Width and Fracture Conductivity for Hydraulic Fractures in Tight Reservoirs
Authors
Shan Jiang
Peng Chen
Min Yan
Botao Liu
Hong Liu
Hao Wang
Publication date
21-05-2020
Publisher
Springer Berlin Heidelberg
Published in
Arabian Journal for Science and Engineering / Issue 9/2020
Print ISSN: 2193-567X
Electronic ISSN: 2191-4281
DOI
https://doi.org/10.1007/s13369-020-04614-3

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