000			02187nab a2200205 4500
005			20260522171136.0
008			260224s2009 xxu
100	1		_aAlali, Najeh _942914
100	1		_aJabbari, Hadi _942915
100	1		_aReza Pishvaie, Mahmoud _942916
245	0	0	_aA new semi-analytical modeling of steam-assisted gravity drainage in heavy oil reservoirs
260			_cdic. 2009
270			_a17/06/2010 ; 17/06/2010
300			_a10 p. ; 261-270
520			_aTranscripción del resumen del autor. Thermal recovery by steam injection has proven to be an effective means of recovering heavy oil. Forecasts of reservoir response to the application of steam are necessary before starting a steam drive project. Thermal numerical models are available to provide forecasts. However, these models are expensive and consume a great deal of computer time. An alternative to numerical modeling is to use a semi-analytical model. The objective of the current study was to investigate thermal applications of horizontal wells for displacement and gravity drainage processes using analytical modeling as well as reservoir simulation. The main novelties presented in the paper are: a) the transient temperature distribution ahead of the moving oil-steam interface is formulated, instead of classic assumption of quasi-steady distribution, b) new drainage oil rate calculation, c) estimation of interface position while advancing into the reservoir towards the pattern boundaries, d) introduction of new equations to place the interface curves into the reservoir, e) new "type-curves" are set up for approximating the interface velocity while propagating beyond the horizontal wells to the side boundaries, and f) introducing an indirect formulations for evaluating the oil-steam interface velocity into the reservoir. Many cases were run on the classic approaches and proposed approach for comparison and verification purposes. The proposed methodology outperforms the previous and most recent models in terms of precision and consistency.
581			_a3-4
773	0		_tJournal of Petroleum Science & Engineering _g69
942			_cARTICULO _2ddc
999			_c171146 _d171146