At greater well depths, brake shoes often fail mainly due to surface cracks; data on failures of typical brake shoes (used in Soviet Union) during 1961-1964 were evaluated statistically in terms of probability of failure-free operation and rate of failure. (see also English translation in Chem and Petroleum Eng n 10 Oct 1966 p 681-4)
Results of evaluation of reliability of brake shoes used in drilling derricks
Rezul'taty otsenki nadezhnosti tormoznykh shkivov burovykh lebedok
1966
2 pages
Aufsatz (Zeitschrift)
Englisch
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