Hydraulic fracturing is a powerful technology used to stimulate fluid production from reservoirs. The fully 3-D numerical simulation of the hydraulic fracturing process is of great importance to the efficient applicat...Hydraulic fracturing is a powerful technology used to stimulate fluid production from reservoirs. The fully 3-D numerical simulation of the hydraulic fracturing process is of great importance to the efficient application of this technology, but is also a great challenge because of the strong nonlinear coupling between the viscous flow of fluid and fracture propagation. By taking advantage of a cohesive zone method to simulate the fracture process, a finite element model based on the existing pore pressure cohesive finite elements has been established to investigate the propagation of a penny-shaped hydraulic fracture in an infinite elastic medium. The effect of cohesive material parameters and fluid viscosity on the hydraulic fracture behaviour has been investigated. Excellent agreement between the finite element results and analytical solutions for the limiting case where the fracture process is dominated by rock fracture toughness demonstrates the ability of the cohesive zone finite element model in simulating the hydraulic fracture growth for this case.展开更多
复合材料界面力学问题是复合材料力学研究的热点,近些年得到学者们的广泛关注,发表了大量文献,并取得了重要进展.论文简要介绍复合材料界面内聚力模型(Cohesive Zone Model,CZM)的研究进展,重点介绍本课题组最近在界面模型理论研究及应...复合材料界面力学问题是复合材料力学研究的热点,近些年得到学者们的广泛关注,发表了大量文献,并取得了重要进展.论文简要介绍复合材料界面内聚力模型(Cohesive Zone Model,CZM)的研究进展,重点介绍本课题组最近在界面模型理论研究及应用研究方面的一些工作,希望对国内相关领域的研究有所裨益.展开更多
文摘Hydraulic fracturing is a powerful technology used to stimulate fluid production from reservoirs. The fully 3-D numerical simulation of the hydraulic fracturing process is of great importance to the efficient application of this technology, but is also a great challenge because of the strong nonlinear coupling between the viscous flow of fluid and fracture propagation. By taking advantage of a cohesive zone method to simulate the fracture process, a finite element model based on the existing pore pressure cohesive finite elements has been established to investigate the propagation of a penny-shaped hydraulic fracture in an infinite elastic medium. The effect of cohesive material parameters and fluid viscosity on the hydraulic fracture behaviour has been investigated. Excellent agreement between the finite element results and analytical solutions for the limiting case where the fracture process is dominated by rock fracture toughness demonstrates the ability of the cohesive zone finite element model in simulating the hydraulic fracture growth for this case.
文摘复合材料界面力学问题是复合材料力学研究的热点,近些年得到学者们的广泛关注,发表了大量文献,并取得了重要进展.论文简要介绍复合材料界面内聚力模型(Cohesive Zone Model,CZM)的研究进展,重点介绍本课题组最近在界面模型理论研究及应用研究方面的一些工作,希望对国内相关领域的研究有所裨益.
