Most carbonate rocks are dual porosity-permeability porous media with both pores and fractures. Currently the mechanisms of oil and water flow in the rock fractures remain unclear, causing many problems concerning numerical simulation and reservoir engineering in this kind of carbonate reservoirs. In this study, pressures and flow rates were measured in fractures with different apertures using water and oil. For the single-phase oil flow in fractures, refined oils with different viscosity were used. The experimental data showed that the oil or water flow in fractures became nonlinear when the pressure gradient was greater than a specific value. However, it might not be sound enough to use Re as the only parameter and criterion to judge the linearity of fluid flow. The critical Re was different in fractures with different apertures. Two different types of nonlinear flow was found in fractures.
LIU Min
,
REN Xianghai
,
CHANG Lunjie
,
XIAO Xiangjiao
,
CHANG Zhiqiang
,
WANG Yanqiu
. Experimental Study on Oil/Water Flow in Fractures[J]. Science & Technology Review, 2014
, 32(13)
: 41
-45
.
DOI: 10.3981/j.issn.1000-7857.2014.13.007
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