摘要：Frac-packing technology has been introduced to improve the development effect of weakly consolidated sandstone. It has double effects on increasing production and sand control. However, determining operation parameters of frac-packing is the key factor due to the particularity of weakly consolidated sandstone. In order to study the mechanisms of hydraulic fracture propagation and reveal the effect of fracturing parameters on fracture morphology in weakly consolidated sandstone, finite element numerical model of fluid-solid coupling is established to carry out numerical simulation to analyze influences of mechanical characteristics, formation permeability, fracturing fluid injection rate and viscosity on fracture propagation. The result shows that lower elastic modulus is favorable for inducing short and wide fractures and controls the fracture length while Poisson ratio has almost no effect. Large injection rate and high viscosity of fracturing fluid are advantageous to fracture initiation and propagation. Suitable fractures are produced when the injection rate is approximate to 3-4 m(3)/min and fluid viscosity is over 100 mPas. The leak-off of fracturing fluid to formation is rising with the increase of formation permeability, which is adverse to fracture propagation. The work provides theoretical reference to determine the construction parameters for the frac-packing design in weakly consolidated reservoirs.

关键字：weakly-consolidated sandstone frac-packing hydraulic fracture fracture propagation numerical simulation

ISSN号：2095-2899

卷、期、页：卷: 25 期: 12 页: 2944-2952

发表日期：2018-12-01

影响因子：0.601000

期刊分区（SCI为中科院分区）：四区

收录情况：SCIE（科学引文索引网络版）,CSCD（中国科技引文期刊）（核心）,ESI（基本科学指标数据库）,EI（工程索引）

发表期刊名称：Journal of Central South University

参与作者：谢涛,许杰,刘海龙

通讯作者：林海

第一作者：邓金根,刘伟

论文类型：期刊论文

论文概要：林海,邓金根,刘伟,谢涛,许杰,刘海龙，Numerical simulation of hydraulic fracture propagation in weakly consolidated sandstone reservoirs，Journal of Central South University，2018，卷: 25 期: 12 页: 2944-2952

论文题目：Numerical simulation of hydraulic fracture propagation in weakly consolidated sandstone reservoirs