{"id":1520,"date":"2020-10-27T15:19:33","date_gmt":"2020-10-27T12:19:33","guid":{"rendered":"https:\/\/adcr.ru\/?p=1520"},"modified":"2020-10-27T15:23:45","modified_gmt":"2020-10-27T12:23:45","slug":"2013-3-7","status":"publish","type":"post","link":"https:\/\/adcr.ru\/en\/2013-3-7\/","title":{"rendered":"\"REPORTER of the Association of Drilling Contractors\" N 3, 2013"},"content":{"rendered":"
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\"\"<\/strong><\/h3>\n

SOME ASPECTS OF THE OPERATION OF POSITIVE DISPLACEMENT MOTORS<\/span>
Molodilo, Vladimir I. \u2013 Cand.Tec.Sci., chief drilling engineer, LLC VNIIBT-Burovoy Instrument, vmolodilo@integra.ru vmolodilo@integra.ru<\/a>\u00a0
Korotaev, Sergey N. \u2013 deputy service director, LLC VNIIBT-Burovoy Instrument, SKorotaev@integra.ru\u00a0 SKorotaev@integra.ru<\/a>
Dyakonov, Grigory A. \u2013 deputy chief drilling engineer, LLC VNIIBT-Burovoy Instrument, GDyakonov@integra.ru\u00a0 GDyakonov@integra.ru<\/a><\/em><\/strong><\/p>\n

\u0423\u0414\u041a 622.24
Key words:<\/strong> well\u00a0 drilling,\u00a0 axial\u00a0 load,\u00a0 torque,\u00a0 drill\u00a0 bit\u00a0 rations,\u00a0 wellbore\u00a0 quality, \u00a0control, accuracy, positive displacement motor, differential pressure, breaking out of threaded connections, emergency systems.
The paper concerns two aspects which are relevant to the efficient operation of positive displacement motors. The first aspect is self-unscrewing of threaded connections in the downhole motor assembly, and analysis of factors contributing to incidents caused by the above phenomenon.
Provided are case histories and analysis of causes of incidents, as well as recommendations\u00a0 for\u00a0 incident\u00a0 response\u00a0 and\u00a0 prevention,\u00a0 developed\u00a0 by\u00a0 LLC\u00a0 VNIIBT-Burovoy Instrument. The second aspect concerns the possibility to control the drilling process, including automatic control based on pressure change. It allows to obtain comprehensive data concerning the real-time bottomhole conditions, motor and bit condition, change of rock properties, etc., without complex and expensive telemetric systems, which is not possible in turbodrilling and rotary drilling.<\/p>\n

\u00a0<\/p>\n

SOME ASPECTS OF THE OPERATION OF POSITIVE DISPLACEMENT MOTORS<\/span>
Molodilo, Vladimir I. \u2013 Cand.Tec.Sci., chief drilling engineer, LLC VNIIBT-Burovoy Instrument, vmolodilo@integra.ru<\/a> \u00a0
Korotaev, Sergey N. \u2013 deputy service director, LLC VNIIBT-Burovoy Instrument, SKorotaev@integra.ru<\/a> \u00a0
Dyakonov, Grigory A. \u2013 deputy chief drilling engineer, LLC VNIIBT-Burovoy Instrument, GDyakonov@integra.ru<\/a><\/strong><\/em><\/p>\n

Key\u00a0 words:<\/strong>\u00a0 well\u00a0 drilling,\u00a0 axial\u00a0 load,\u00a0 torque,\u00a0 drill\u00a0 bit\u00a0 rations,\u00a0 wellbore\u00a0 quality, \u00a0control, accuracy, positive displacement motor, differential pressure, breaking out of threaded connections, emergency systems.
The paper concerns two aspects which are relevant to the efficient operation of positive displacement motors. The first aspect is self-unscrewing of threaded connections in the downhole motor assembly, and analysis of factors contributing to incidents caused by the above phenomenon. Provided are case histories and analysis of causes of incidents, as well as recommendations\u00a0 for\u00a0 incident\u00a0 response\u00a0 and\u00a0 prevention,\u00a0 developed\u00a0 by\u00a0 LLC\u00a0 VNIIBT-Burovoy Instrument. The second aspect concerns the possibility to control the drilling process, including automatic control based on pressure change. It allows to obtain comprehensive data concerning the real-time bottomhole conditions, motor and bit condition, change of rock properties, etc., without complex and expensive telemetric systems, which is not possible in turbodrilling and rotary drilling.<\/p>\n

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