01624nab a2200205 4500 20260520001841.0 260224s2009 xxu Development and evaluation of various drilling fluids for slim hole wells jun. 2009 05/08/2010 ; 05/08/2010 3 p. ; 30-32 Transcripción del resumen del autor. Slim hole drilling has gained wide acceptance, however, it presents a new set of challenges and problems. One such challenge is reducing annular pressure losses (APLs). Due to the reduced annular clearance in slim hole wells, the APL is usually high, translating to a high equivalent circulating density which can lead to fracturing the formation and lost circulation. Fifty-three fluids were evaluated for their APLs using three different wellbore configurations under atmospheric conditions and at 150°F. Each fluid was characterized using the Bingham Plastic and Power Law rheological models. It was observed that the partially hydrolyzed polyacrylamide (PHPA) viscosified brines gave the lowest frictional pressure losses of all fluids tested. However, the xanthan viscosified brines exhibited better carrying capacity due to their high viscosities. As expected, APL gradients were reduced at high temperatures due to reduced viscosities which led to reduced carrying capacities of the fluids. 6 Journal of Canadian Petroleum Technology 48 ARTICULO Enilari, M.G. 46241 Osisanya, S.O. 21330 Ayeni, K.B. 46242 175766 175766 0 0 0 0 243585 BAAB BAAB 2026-03-05 200047673 0 200047673 2026-03-05 18:56:13 2026-03-05 ARTICULO