000			01794nab a2200193 4500
005			20260520001759.0
008			260224s2010 xxu
100	1		_aReza Pishvaie, Mahmoud _942916
100	1		_aDelijani, Ebrahim Biniaz _942946
245	0	0	_aGreen Element solution of one-dimensional counter-current spontaneous imbibition in water wet porous media
260			_cfeb. 2010
270			_a17/06/2010 ; 17/06/2010
300			_a6 p. ; 302-307
520			_aTranscripción del resumen del autor. A Green Element numerical formulation is used to solve the time-dependent nonlinear one-dimensional counter-current spontaneous imbibition diffusion equation in which water enters a water wet rock spontaneously while oil escapes by flowing in the opposite direction. The Green Element Method (GEM) is an element by element approach of the boundary element method. In this new method, by generating large sparse global matrices and yet taking advantage of properties of Green's function, solution of more complicated physical problem is achievable while at the same time much less computational effort is needed rather than boundary element method (BEM). By discretizing both the boundary and problem domain, GEM is capable of solving the whole system for the saturation and its derivative. For these calculations no approximation for simplification of nonlinearities is performed except interpolating the variables with linear shape function. The GEM results are compared with experimental imbibition measurements available in approachable literatures and also, analytical solution of the problem. The comparison reveals good agreement between them.
581			_a3-4
773	0		_tJournal of Petroleum Science & Engineering _g70
942			_cARTICULO
999			_c171166 _d171166