{"id":1077,"date":"2020-10-25T21:16:21","date_gmt":"2020-10-25T18:16:21","guid":{"rendered":"https:\/\/adcr.ru\/?p=1077"},"modified":"2020-10-26T15:06:38","modified_gmt":"2020-10-26T12:06:38","slug":"2011-1-4","status":"publish","type":"post","link":"https:\/\/adcr.ru\/en\/2011-1-4\/","title":{"rendered":"\"REPORTER of the Association of Drilling Contractors\" N 1, 2011"},"content":{"rendered":"
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\"\"<\/strong><\/h3>\n

FATIGUE BREAKDOWN OF ROCKS WHILE DRILLING<\/strong><\/p>\n

Stanislav V. Sinev - Cand.Tech.Sci., stanislav-vs@mail.ru stanislav-vs@mail.ru<\/a>.<\/em><\/strong>
\u0423\u0414\u041a 622.24<\/strong><\/p>\n

Key words:<\/strong> drill bit, fatigue failure, rock, cutting structure, stress cycle, weight on bit.<\/em><\/p>\n

\u0420<\/span>The article focuses on the history of the study of fatigue breakdown of rocks. The number of cycles in fatigue breakdown of rocks is many hundred thousand times less than that of metals. Fatigue breakdown always occurs while drilling because weight on bit is not sufficient to destroy rocks by a single movement of the bit.<\/p>\n

FATIGUE BREAKDOWN OF ROCKS WHILE DRILLING<\/strong><\/p>\n

Stanislav V. Sinev —  Cand.Tech.Sci.,  stanislav-vs@mail.ru<\/a><\/strong><\/em><\/p>\n

Key words:<\/strong> drill bit, fatigue failure, rock, cutting structure, stress cycle, weight on bit<\/p>\n

T<\/span>he article focuses on the history of the study of fatigue breakdown of rocks. The number of cycles in fatigue breakdown of rocks is many hundred thousand times less than that of metals. Fatigue breakdown always occurs while drilling because weight on bit is not sufficient to destroy rocks by a single movement of the bit.<\/p>\n

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