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Information × Registration Number 0204U003718, 0103U005728 , R & D reports Title Creation spheric shape bits with applying of chatterings string stabilizer for boring long boreholes with the purpose of degasification of coal-beds in conditions of Засядько and Красноармейская - Западная № 1 mines popup.stage_title Head Igor A. Sveshnikov, Registration Date 15-04-2004 Organization V.Bakul Institute for Superhard Materials popup.description2 The spheric shape bits with applying of chatterings string stabilizer for boring methane drainage boreholes are designed and manufactured. The trials of bits in conditions of mines Засядько and Красноармейская - Западная № 1 are held. Established, that uses of new bits allows to increase stability of bits in 1,5, and drilling rate in 2,0 times in comparison with serial roller bits. Product Description popup.authors popup.nrat_date 2020-04-02 Close