A fully coupled and full 3D finite element model for hydraulic fracturing and its verification with physical experiments

被引：0
|
作者：
Bao J. [1 ]
Yang C. [1 ]
Xu J. [2 ]
Liu H. [2 ]
Wang G. [3 ]
Zhang G. [4 ]
Cheng W. [4 ]
Zhou D. [1 ]
机构：
[1] School of Petroleum Engineering, Xi'an Shiyou University, Xi'an
[2] PetroChina Jilin Oilfield Company, Songyuan
[3] PetroChina Zhejiang Oilfield Company, Hangzhou
[4] PetroChina Research Institute of Petroleum Exploration & Development, Beijing
来源：
Qinghua Daxue Xuebao/Journal of Tsinghua University | 2021年 / 61卷 / 08期
关键词：
Experimental verification; Finite element method; Full 3-D model; Hydraulic fracturing;
D O I：
10.16511/j.cnki.qhdxxb.2021.26.019
中图分类号：
学科分类号：
摘要：
Two sets of equation are proposed to describe the key mechanic issues in hydraulic fracturing including rock deformation, fracture propagation, fluid flow and leak-off in fractures, where the finite element method is taken as the numerical foundation. The fully coupled and full 3-D numerical model for hydraulic fracturing is set up via solving the coupled two sets of equation simultaneously. Comparisons of the numerical simulations from the model with two classical physical experiments are made, and they have excellent agreements on net pressure, fracture widths, fracture lengths, fracture propagation modes, et al. The numerical model is verified by the experiments, and shows that the cubic law in the hydraulic fracturing theory is still applicable even when the fracture widths are at the order of microns. © 2021, Tsinghua University Press. All right reserved.
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页码：833 / 841
页数：8
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