China's domestically produced machine small-caliber rope core drilling breakthrough 2400 meters record
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This record-breaking hole is located in the No. 1 mining area of ​​Laizhou, and the construction task is undertaken by the rig No. 612 of the Shandong Geological Team. Drilled on September 17, 2009, and finally completed on March 10, 2010. The opening has a diameter of 127 mm, a final hole diameter of 75 mm, and a final hole depth of 2401.12 m.
According to the prospecting experts of the Shandong Bureau of Geology and Minerals, the current direction of geological prospecting in eastern China is deep. The deep hole record created this time marks that China's drilling construction technology has reached a new level. The strategy of deep finding blindness is of great significance.
The mechanical core drilling technology of Shandong Bureau of Geology and Minerals has maintained a leading level in the same industry in the country. It has completed drilling work for more than two million meters in two consecutive years, and broke the domestic hole record of small-diameter ropes for Chinese domestically produced machines. .