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钻探工程施工中,往往由于矿心采取率满足不了地质要求或遇有井内难以迅速处理之复杂事故,需要进行补打斜孔,补采矿心或恢复正常钻进。目前的补斜方法,多是用比所下之楔子小一级进行。这种补斜方法与我们实际要求的井径不符合,又容易造成收孔的困难而影响质量。与此同时,由于楔子本身在钻进
Drilling engineering construction, often due to the mining center to meet the geological requirements can not meet or meet the wells difficult to quickly deal with the complex accident, the need to fill oblique hole, make mining heart or return to normal drilling. The current complement of oblique method, mostly with the wedge smaller than the next level. This complementary oblique method does not meet the actual requirements of the caliper, but also easily lead to the difficulty of closing the hole and affect the quality. At the same time, because the wedges themselves are drilling