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在大斜度井、套管开窗侧钻井等钻井作业中， 受井壁摩擦阻力的影响及限制，施加钻压困难，应用液力推进器可有效解决这一难题。在苏金２０５Ｂ井和胡侧１２－３井中的成功应用表明， 液力推进器能实现钻压恒定不变和均匀送钻， 并提高机械钻速及保护钻具和钻头， 具有良好的应用和发展前景
In high-deviated wells and casing windows side drilling and other drilling operations, affected by the frictional resistance of the borehole wall wall, and the limited application of bit weight, hydraulic thrusters can effectively solve this problem. The successful application in wells Su-205 205B and Hu-12 12 wells shows that hydraulic thrusters can be used with constant weight-on-bit and uniform drilling, as well as to improve ROP and protect drilling tools and drill bits. Prospects