000			01775nab a2200181 4500
005			20260520001817.0
008			260224s2008 xxu
100	1		_aHales, H.B. _944255
245	0	0	_aA characteristic-based reservoir simulator with gravitational effects
260			_cnov. 2008
270			_a31/01/2011 ; 31/01/2011
300			_a8 p. ; 48-55
520			_aTranscripción del resumen del autor. The 'method of characteristics' was proposed as a fast method of reservoir simulation many years ago. When gravitational effects are absent, the method results in a reservoir simulation technique identical to that of currently popular streamline models. However, the characteristic method rigorously includes gravity, whereas the streamline method does not. The characteristic method has never become popular, probably because of the lack of a criterion for locating the flood fronts in multiple dimensions. This problem is widely discussed in the mathematical literature, and seems to have become a classical paradox. This paper describes the use of a local material balance at oints throughout the reservoir to establish the location of the front. The availability of this criterion makes the characteristic simulation method practical. The front location technique is fast,taking approximately the same amount of time as locating the constant saturation lines or characteristics. Hence, the method offers the speed of streamline simulators combined with the greater accuracy and versatility resulting from a rigorous treatment of gravitational effects. Examples of simulations from the new characteristic simulator are provided.
581			_a11
773	0		_tJournal of Canadian Petroleum Technology _g47
942			_cARTICULO
999			_c173079 _d173079