Flow coupling during three-phase gravity drainage

被引：22

作者：

Dehghanpour, H. ^{[1
]}

Aminzadeh, B. ^{[1
]}

Mirzaei, M. ^{[1
]}

DiCarlo, D. A. ^{[1
]}

机构：

[1] Univ Texas Austin, Dept Petr & Geosyst Engn, Austin, TX 78712 USA

来源：

PHYSICAL REVIEW E | 2011年 / 83卷 / 06期

关键词：

RELATIVE PERMEABILITY; 2-PHASE FLOW; POROUS-MEDIA; COEFFICIENTS; LIQUID; WETTABILITY; IMBIBITION; TRANSPORT; EQUATIONS; CORNERS;

D O I：

10.1103/PhysRevE.83.065302

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We measure the three-phase oil relative permeability k(ro) by conducting unsteady-state drainage experiments in a 0.8 m water-wet sand pack. We find that when starting from capillary-trapped oil, k(ro) shows a strong dependence on both the flow of water and the water saturation and a weak dependence on oil saturation, contrary to most models. The observed flow coupling between water and oil is stronger in three-phase flow than two-phase flow, and cannot be observed in steady-state measurements. The results suggest that the oil is transported through moving gas-oil-water interfaces (form drag) or momentum transport across stationary interfaces (friction drag). We present a simple model of friction drag which compares favorably to the experimental data.

引用

页数：4

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