000			01785nab a2200193 4500
005			20260520001842.0
008			260224s2009 xxu
100	1		_aParappilly, R. _946253
100	1		_aZhao, L. _921446
245	0	0	_aSAGD with a longer wellbore
260			_cjun. 2009
270			_a05/08/2010 ; 05/08/2010
300			_a7 p. ; 71-77
520			_aTranscripción del resumen del autor. This paper investigates the feasibility of bitumen production using SAGD technology with a longer wellbore. A longer wellbore can be used to exploit a greater volume of the reservoir with a single wellpair as opposed to multiple wells; thus, decreasing pad and drilling costs. The major concern in using a longer wellbore from a reservoir engineering point of view is the potentially non-uniform steam chamber growth over the whole well length due to pressure drop in the horizontal well. Reservoir simulation was performed using Computer Modelling Group's STARS' simulator and the QFlow thermal wellbore simulator to address the issue. The pressure drop inside the wellbore was calculated using QFlow. Reservoir simulations were performed using STARS. A sectioned model was constructed, dividing the whole length of the horizontal wellbore into multiple sections, each with its own pressure restriction to match the pressure drop obtained from QFlow. The results showed that with a sufficiently large wellbore size that resulted in a sufficiently low pressure drop, one longer well performed as well as two shorter wells. When a smaller wellbore size was used, production from a longer well was significantly impeded due to the large pressure drop.
581			_a6
773	0		_tJournal of Canadian Petroleum Technology _g48
942			_cARTICULO
999			_c175773 _d175773