坚硬顶板水力压裂效果提升技术研究  

Research on Improving Hydraulic Fracturing Effect of Hard Roof

作　　者：赵鹏飞 Zhao Pengfei(Shanxi Coking Coal Xishan Coal Electricity Xiqu Coal Mine,Taiyuan Shanxi 030000,China)

机构地区：[1]山西焦煤西山煤电西曲矿,山西太原030000

出　　处：《山西冶金》2024年第5期100-101,共2页Shanxi Metallurgy

摘　　要：为了研究无滤失情况下水力压裂参数对模型压裂效果的影响,对水力压裂过程进行防水处理。经过防水处理后,模型的裂缝扩展整体呈现出S形,在裂缝尖端位置的最大应力值为15.07 MPa,而最大应变值为0.033 mm,裂缝扩展效果最佳。同时,裂缝张开度和压裂液流速随着压裂液黏度的增大呈现出逐步增大的趋势,而裂缝的起裂偏转角呈现出逐步减小的趋势,但减小的幅度逐步减弱。In order to solve the influence of Fracking parameters on the simulation of filtration in the study of fracturing effect,this paper conducts waterproof treatment on the process of Fracking.It is found that after waterproof treatment,the overall crack expansion of the model presents an S-shaped,the maximum stress value at the crack tip is 15.07 MPa,and the maximum strain is 0.033 mm.The crack expansion effect is better.At the same time,after waterproof treatment,the fracture opening and fracturing fluid flow rate show a gradually increasing trend with the increase of fracturing fluid viscosity,while the fracture initiation deflection angle shows a gradually decreasing trend,but the decreasing amplitude gradually weakens,providing a theoretical basis for waterproof treatment for the subsequent optimization of fracking parameters.

关 键 词：坚硬顶板 数值模拟 防水处理 压裂液黏度 起裂压力 

分 类 号：TD32[矿业工程—矿井建设]