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Information × Registration Number 0200U004739, 0198U001501 , R & D reports Title The drill string catch connections design modification to improve thoir reliability popup.stage_title Head Kyrychenko G.M., Registration Date 10-11-2000 Organization Ukrainian State Institute for Mineral Resources, Dnepropetrovsk Department popup.description2 The improved drilling catch designs was developed including theoretical validation for and coupling drill strings. Experimental batchs of the improved catches were produced and tested under real conditions, by the Kirov geological enterprise, the madified catches bave demonstrated improved reliability and performance compared with existing catchs. Recommendations to practical adoption. Product Description popup.authors popup.nrat_date 2020-04-03 Close