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在毛主席的无产阶级革命路线指引下,我队组成了有领导干部、工人和技术人员参加的三结合推广小孔径钻进试验小组。先后有五台钻机参加了试验,并取得了一定效果。我们只开动21.4个钻月,总进尺为7673米,平均钻月效率为358米,比同地区105毫米孔径的钻月效率292米提高百分之二十五。平均小时进尺为1.17米,比105毫米孔径的钻孔平均小时进尺0.79米,提高百分之四十八。钻孔深度平均为809米,比105毫米孔径的钻孔深26米。已完工
Guided by Chairman Mao’s proletarian revolutionary line, our team formed a three-in-one pilot small hole drilling test group with leading cadres, workers and technicians. There have been five rigs participated in the experiment, and achieved some results. We only started 21.4 drilling months with a total footage of 7673 meters. The average monthly drilling efficiency was 358 meters, an increase of 25% over the drilling efficiency of 292 meters at the 105-mm aperture in the same area. The average hour footage was 1.17 meters, an average of 0.79 meters and an increase of 48% when compared with the average diameter of 105 mm. Drilling depth averaged 809 meters, 26 meters deeper than the 105 mm hole. Completed