【摘要】 结合燃爆气体动力学、岩石力学、流体动力学和渗流力学的基本原理,建立了高能气体压裂过程中气井射孔孔眼泄流、裂缝内流体压力分布、裂缝壁面流体渗漏、裂缝起裂判据以及裂缝延伸速度等相关的动力学模型,由此建立了高能气体压裂过程中裂缝系统延伸的气/液/固耦合动力学模型,为精确模拟高能气体压裂过程中的裂缝形态变化提供理论基础。更多还原

【Abstract】 By using the basic principle of blasting gas dynamics,rock mechanics,fluid dynamics and fluid mechanics in porous medium,the paper establishes the dynamics model including flush flow of perforation hole in HEGF,distribution of fluid pressure in fracture,fluid leakage of walls in fracture,starting-crack criterion of fracture and extension speed of fracture. Based on this result,we develop gas/liquid/solid coupling dynamics model of fracturing extension in HEGF,and provide the theoretical basis for simulating the changes of fracture geometric shape in HEGF accurately.更多还原