Croatian National Committee World Petroleum Council, Croatian Academy of Sciences and Arts-Scientific Council for Petroleum
Abstract
U članku je prikazana nova metoda za sprečavanje ili smanjivanje mogućnosti prihvata cijevi u bušotini tijekom izrade naftnih i plinskih bušotina. Ova metoda, primjenjiva na vertikalne i koso umjerene bušotine, uključuje nanočestice u sastavu isplake za bušenje radi smanjivanja debljine isplačne obloge. S manjom debljinom isplačne obloge smanjuje se mogućnost prihvata cijevi. Razmatrani su različiti mehanizmi prihvata cijevi na naftnim poljima Ahwaz i Abb-Taymoor (jugozapadni Iran) te su predložene nove metode za njihovo korištenje tijekom bušenja osjetljivih formacija s obzirom na prihvat cijevi na tim naftnim poljima.This paper presents a new method to prevent stuck pipe or at least to decrease its probability while drilling of oil and gas wells. This method which is applicable in both vertical and deviated wells incorporates using nanoparticles in drilling mud composition to decrease mud cake thickness. So by having less mud cake thickness, probability of stuck pipe decreases. Also different mechanisms of stuck pipe in Ahwaz and Abb-Taymoor oil fields (SW Iran) are considered and a new approach is suggested to use, while drilling of most sensitive formations in respect to stuck pipe in these oil fields
