By James Brill
This monograph offers with the steady-state points of multiphase movement; the authors have supplied a radical assessment of empirical correlations for predicting mass move and fluid actual houses for the black-oil version. whereas the scope is limited to move in wells, the quantity might be both valuable for engineers facing multiphase stream in floor pipes and horizontal wells.
Contents: Single-phase-flow recommendations • Multiphase-flow ideas • Multiphase-flow pressure-gradient prediction • move via regulations and piping parts • good layout functions
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Extra resources for Multiphase Flow in Wells, No. 17
Example text
8 = erf − 90 . 90622. Thus, Eq. 90622 = − U 90 vL 2 DL . 1, U = U10. According to Eq. 90622 = U10 vL 2 DL . 47) Adding Eq. 46 and Eq. 47 gives 2 U − U 90 D L = 10 vL. 48) Thus, DL may be calculated from the readings U10 and U90 on the straight line on the probability paper. 38 DL = U 5 − U 95 vL. 3 Empirical Correlations for the Longitudinal Dispersion Coefficient Empirical correlations for the longitudinal dispersion coefficient are based on the premise that DL can be represented as the sum of molecular diffusion (Dτ) and convective dispersion components (Dc): D L = D τ + Dc.
In general, they are various combinations of the error function. When the porous medium is long compared with the length of the mixed zone, they all give virtually identical results. 23) where C0 and Cinj are the concentrations at t = 0 and the injection concentration, respectively. The dimensionless forms of Eqs. 30) xD = x . 31) L is the dimension parallel to bulk flow (length), and NPe is the Peclet number. According to Naiki (1979), the solution of Eq. 24 under the initial and boundary conditions (Eqs.
66) may be written in terms of distances traveled by water solution and the chemical: x Ci = xw . 71) where (PV)w and (PV)Ci are the total pore volume of the water injected and the pore volume that the concentration Ci has traveled from the injection point, respectively. 05 mL/mL solution volume in the system. 005 mL/mL water volume. 5 and 1000, respectively. 005 mL/ mL solution volume, let us see how far different concentrations have traveled. Such concentration distribution is called a profile, as introduced previously.