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Selection of High Performance Roller Bits Suitable to Specific Well Cases
(Alegerea sapelor cu role performante pentru situaţii concrete de sondă)
Vol LXVI • No. 4/2014
Dumitru Iordache
Liceul Tehnologic ,,Ludovic Mrazek”, Str. Mihai Bravu, nr. 241, Ploieşti e-mail: dumior.ghighiu@yahoo.com

 Keywords   roller bit, well conditions, constructor’s provisions

 Abstract
Depending on the purpose envisaged (proper drilling, enlarging, correction, deviation), on the drilling method (rotary table or submersible engine drilling), on the well conditions (as for diameter, depth, circulated fluid, rock type, tectonics) and by using all the available information, the bit shall be selected from among all existing types and methods so that to be the most suitable depending also on the constructor’s provisions and previous performances under the same conditions.

 Rezumat
Alegerea sapelor se face în funcţie de scopul urmărit (foraj propriu-zis, lărgire, corectare, deviere), de metoda de foraj (cu masa rotativă sau cu motoare submersibile), de condiţiile de sondă (diametru, adâncime, fluid circulat, tip de rocă, tectonică) şi, folosind toate informaţiile disponibile sapa se alege dintre toate tipurile şi modelele existente, cea mai potrivită, şi în funcţie de prescripţiile constructorului şi, chiar de performanţele anterioare, în aceleaşi condiţii.



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