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Information × Registration Number 0204U000694, 0102U003017 , R & D reports Title The scientific basis of design parameters of drill column compressed part under drilling prospecting wells. popup.stage_title Head Kozhevnykov A., Registration Date 19-02-2004 Organization National Mining University popup.description2 For the first time in result of the research received theoretical dependencies, which establish functional connection between geometrical and power characteristics of drill pipes and thickness of side. The connection between length of compact and extended part and thickness of side has hyperbolic type. The connection between coefficient of extension weight of one meter and thickness of side established. Dependence consumption of capacity on rotation of drill column from thickness of side established too. Received results permit to determine optimum ratio between external and inside diameters of drill column from various dimensions of walls, their function and kind of rock destruction tool.5635 Product Description popup.authors popup.nrat_date 2020-04-02 Close