论文部分内容阅读
鋼砂鑽进效率的提高取決于許多的瓚进因素,如压力、水量、轉数,鑽头水口形状,投砂量和投砂方法等。但是在过去鋼砂鑽进中对于投砂量和投砂方法問題,还沒有引起特别的注意。因此多使用一次投矽法,鑽进一次投砂法虽有它的优点,但与多次补給法的鑽进效率比较,还是值得討論的。实踐証明,在其他因素(压力、水量、轉数、鑽头水口形状)不变的情況下,在同一岩石中进行长期观察測驗証明,多次补給法鑽进,要比一次投砂法效率高,回次进尺多及回次进尺时間多,为了进一步說明这一問題我們特作了測驗。 測驗是在7級黄龙矽質石灰岩中进行的。採用
Grit drilling efficiency improvement depends on many factors such as pressure, water, rpm, bit shape, amount of sand and sand casting methods. However, there has been no special attention paid to the amount of sand cast and the method of sand casting in the grit drilling in the past. Therefore, the use of a cast silicon method, drilling a sand throwing method although its advantages, but with multiple recharge method of drilling efficiency is still worth discussing. Practice has proved that in other factors (pressure, water, revolutions, bit shape) unchanged, long-term observation in the same rock tests show that multiple recharge method to drill, than a sand casting method High efficiency, back to the footage and back into the footage more time, in order to further illustrate this problem we have made a special test. Quizzes were conducted in grade 7 Huanglong Silica limestone. use