涡轮式水力振荡器在涪陵页岩气水平井中的应用

涪陵页岩气田长水平段水平井钻井施工中面临着轨迹调整频繁、摩阻扭矩大、定向钻井托压等技术难题和挑战。涡轮式水力振荡器通过机械振动将滑动钻进时钻柱与井壁的静摩擦转变为动摩擦，取得了良好的降摩减阻效果，大幅提高长水平段一趟钻完钻成功率。介绍涡轮式水力振荡器结构及其降摩减阻机理，开展结构及性能专项优化，分析涪陵地区该水力振荡器的应用情况，对下一阶段该水力振荡器在涪陵页岩气田中的推广应用提出建议。

Application of Turbine Hydraulic Oscillator in Horizontal Wells in Fuling Shale Gas Field

The drilling works are faced with technical difficulties and challenges such as frequent trajectory adjustment, high frictional drag and torque and pressure support in directional drilling. The turbine hydraulic oscillator converts the static friction between drilling string and the well wall into dynamic friction through mechanical vibration. It has been achieved good effect of friction reduction and drag reduction, and greatly improved the completion success rate of long horizontal section in one trip. The structure and friction reduction mechanism of the turbine hydraulic oscillator is introduced, the special optimization of the structure and performance of the turbine hydraulic oscillator is carried out, the application of the hydraulic oscillator in Fuling area is analyzed, and some suggestions for the popularization and application of the hydraulic oscillator in Fuling shale gas field in the next stage are put forward.