Shaft engineering | Very eBook

Shaft engineering

Date: 22 April 2011, 12:10

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The paper covers the development of the soviet shaft drilling industry by recounting the use of rigs between 1936 and the present date. Special consideration is given to the rigs WIRTH type L 35 type rigs and major points from recent experience made during the last decade of drilling more than 25 shafts. The paper includes a description of the standard drilling and lining operations in use today and the performance achieved, including an account of a major extensive fishing operation.The aims of the Soviet Special Shaft Drilling Company together with WIRTH in developing a Steerable Drilling Device upon which the drilling industry could rely are explained. The first results from the industrial tests and applications of such a device are summarized.

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