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这种仪器不但能显示钻孔孔底的压力,还可以对钻具和井管进行称重。在钻探施工中,钻具施加在孔底的压力有多大?过去是靠钻工的手感凭经验判断的,很不准确,常造成脱落钻具、扭断钻杆等事故。yD——1型孔底压力显示仪测量范围为0——19吨,分辨率为10公斤,测重误差在1.5％左右。操作人员可根据地面仪表上显示的数据,按需要随时调整钻压。
This instrument not only shows the pressure at the bottom of the borehole, it also weighs the drill string and well tube. In drilling construction, the pressure exerted by the drilling tool on the bottom of the hole is much. In the past, it was judged by experience of the drilling worker by experience, which was very inaccurate. It often resulted in the accident of falling off the drilling tool and wringing off the drill pipe. YD - 1 hole bottom pressure indicator measuring range of 0-19 tons, a resolution of 10 kg, weighing error of about 1.5%. The operator can adjust the weight-on-drill according to the need according to the data displayed on the ground instrument.