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本文论述了提高我国喷射钻井的途径:适当降低排量,减少沿程损耗,提高钻头水马力;缩短喷距,减少射流穿透泥浆“垫层”的水功率损耗,提出了计算井底水力能量的近似计算公式;改善井底流场以充分发挥输送到井底的水力能量作用。同时介绍了华北18口试验井的经济效果。
This paper discusses ways to improve jet drilling in our country: reducing discharge, reducing the loss along the way and increasing the water and horsepower of drill bit; shortening the jet distance and reducing the water power loss of jet penetrating mud “cushion” Of the approximate calculation formula; improve the bottom hole flow field to give full play to the role of hydraulic energy delivered to the bottom of the well. At the same time introduced the economic effect of 18 test wells in North China.