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245 0 0 _aAn integrated experimental study of foamy oil flow during solution gas drive
270 _a04/12/2008 ; 26/07/2005
300 _a8 p.
520 _aTRANSCRIPCIÓN DEL RESUMEN PUBLICADO POR LOS AUTORES: One of the important mechanisms in the primary production of heavy oil reservoirs under solution gas drive is the foamy oil flow effect. This form of flow occurs only under certain combinations of capillary, viscous, and gravity forces. Several studies have been carried out to examine this effect on the recovery process, but it remains poorly understood and difficult to model. The objective of this study was to examine the roles of capillary, viscous, and gravity forces in foamy oil flow. Primary depletion experiments were conducted in a 2 m long sand pack holder to measure the oil and gas production at different depletion rates. The effect of gravitational forces was investigated by comparing the experiments conducted in horizontal and vertical orientations of the 2 m long sand pack. In the vertical orientation, the solution gas drive performance was evaluated with production from the bottom end of the sand pack, as well as with production from the top end. The experimental results are presented in terms of the oil and gas production behaviour affected by the capillary number and gravity forces. The results indicate that the gravity forces do not significantly influence the ultimate oil recovery when the oil is produced under foamy oil flow. Even at the lowest depletion rate used in these tests, when the oil flow and gravity are in the same direction, gravity segregation of gas did not improve the oil recovery significantly. Recovery efficiency and the critical gas saturation at which free gas flow starts are primarily dependent on the capillary number.
773 0 _tJournal of Canadian Petroleum Technology
_gVol. 44, no. 4 (abr. 2005) ; p. 43-50
942 _cARTICULO
100 1 _aOstos, A.N.
_937037
100 1 _aMaini, B.B.
_912170
650 0 _aProducción de petróleo y gas
_91020
650 0 _aPetróleos pesados
_922736
650 0 _aCapilaridad
_91602
650 0 _aViscosidad
_91954
650 0 _aPeso específico
_925900
700 1 _aMaini, B.B.
_912170
999 _c165616
_d165616