[Opm] Difference between WellState::perfRates and WellStateFullyImplicitBlackoil::perfPhaseRates

[Andreas Lauser]

On Monday, September 26, 2016 12:35:09 PM Jørgen Kvalsvik wrote:
> Quick tip on how to convert from surface rate to reservoir rate?

simple answer: forget about it ;)

complicated answer for the reservoir-to-surface rate of the oil component:

\sum i in well
r_i,o * B_o,i / rho_o,ref + r_i,g*B_g,i*R_v,i

where "r" is the reservoir rate, "B" the formation volume factor, R_v the oil 
vaporization factor and rho_o,ref the oil surface density. (note that you need 
the reservoir rates of the individual cells that penetrate the well, i.e., the 
sum of the well does not do the trick. also be aware that in the case of cross 
flow the sign of the reservoir rates for individual cells can be the opposite 
of sign of the summed up rate.)

cheers
  Andreas

> ________________________________
> From: Opm <opm-bounces at opm-project.org> on behalf of Atgeirr Rasmussen
> <Atgeirr.Rasmussen at sintef.no> Sent: Monday, September 26, 2016 2:19:39 PM
> To: OPM Mailing List
> Subject: Re: [Opm] Difference between WellState::perfRates and
> WellStateFullyImplicitBlackoil::perfPhaseRates
> 
> The perfRates() vector contains *reservoir volume* total rates at the
> perforations, while the perfPhaseRates() vector contain *surface volume*
> rates per phase. So it is not a direct sum.
> 
> Atgeirr
> 
> 
> 26. sep. 2016 kl. 14.10 skrev Jørgen Kvalsvik
> <JOKVA at statoil.com<mailto:JOKVA at statoil.com>>:
> 
> Hi,
> 
> What's the difference between these two vectors? Is perfRates just the sum
> of the pair/triples in perfPhaseRates?
> 
> 
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