摘要：Degradable fiber can temporarily plug a natural fracture or artificial fracture. It has been successfully applied in the stimulated reservoir volume (SRV) fracturing or re-fracturing of unconventional reservoirs. Based on the classical analytical stress field equation, a new mathematical model is established in this paper to model the crack reorientation path after injecting fiber diversion fluid according to the tensile failure criterion. Factors influencing the diverting radius are intensively analyzed through numerical simulation. The results indicate that the horizontal stress difference, fracturing fluid viscosity, and injection time (fracturing fluid volume) have larger effects on the diverting radius than do the formation permeability (1-50 mD) and bottomhole pressure (90-160 MPa). The simulation results are successfully verified, matching well with the experimental data from the true tri-axial fracture reorientation tests in the laboratory. The model is successfully applied to the heterogeneous carbonate reservoirs in northwest China. (C) 2015 Elsevier B.V. All rights reserved.

关键字：Fracture reorientation Hydraulic fracturing Mathematical model Fiber Stress field

ISSN号：1875-5100

卷、期、页：卷: 25 页: 215-225

发表日期：2015-07-01

期刊分区（SCI为中科院分区）：三区

收录情况：SCIE（科学引文索引网络版）,ESI（基本科学指标数据库）,EI（工程索引）

发表期刊名称：JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING

参与作者：Ding, Wei,Jia, Xinfeng,石阳,Yan, Xingming

通讯作者：汪道兵

第一作者：周福建,葛洪魁,王小琼

论文类型：期刊论文

论文概要：汪道兵,周福建,Ding, Wei,葛洪魁,Jia, Xinfeng,石阳,王小琼,Yan, Xingming，A numerical simulation study of fracture reorientation with a degradable fiber-diverting agent，JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING，2015，卷: 25 页: 215-225

论文题目：A numerical simulation study of fracture reorientation with a degradable fiber-diverting agent