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发表于 2012-12-14 12:50:43
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本帖最后由 minchen 于 2012-12-14 12:56 编辑
如何转换,参考下这个:
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Assuming you have a function of lab measured capillary pressure as a
function of water saturation and permeability Pc = Fn(Sw, K)
Depending on how you measured the capillary pressure, you first need to
convert to equivalent reservoir conditions -> Pc(Res) = Pc(lab) X
SigmaCos(Theta)Res/SigmaCos(Theta)Lab
Lab Conditions Interfacial tension x Cos(Contact Angle) aka Sigma
Cos(Theta)
Air-Water 72
Oil-Water 42
Air-Mercury 367
Air-Oil 24
Reservoir Conditions
Water-Oil 26
Water-Gas 50
So, if your capillary pressure function is lab measured Air-Mercury test, and
you have a Water oil reservoir system, the first conversion is;
Pc(Res) = Pc(lab) X 26 / 367
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忘记在哪里看到过,国内教科书:Pow ≈ PHg X 1 / 15
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