一、概况在批林批孔运动推动下,研究所取心组的同志,在钻井323队、管子站和科研车间等协助下,经过一年多的努力,先后设计试制了12种型式的取心钻头,经历了35次现场试验,取得了一定进展,实现了油田党委提出的硬地层取心平均单筒进尺5米,收获率85％以上的指标。其中以Y—5、Y—6、Y—7三种型式的取心钻头效果较为显著, I. General Situation In line with the pro-Lin Pok campaign, with the help of Drilling 323 Team, Guanzi Station and scientific research workshop, after a year’s efforts, comrades of the Coring Group of the Institute have designed and manufactured 12 types of prototypes Heart drill, has undergone 35 field trials and made some progress, achieved oil field party committee hardcore coring average single-cylinder footage of 5 meters, the harvest rate of 85% or more indicators. Among them, the Y-5, Y-6, Y-7 three types of coring bit are more obvious,