Page 71 - Primer on Enhanced Oil Recovery
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62 Primer on Enhanced Oil Recovery
Figure 7.10 Microscopic sweep efficiency. All sizes are on a micron scale.
Figure 7.11 Representation of macroscopic sweep efficiencies. Sizes are in tens of meters.
Mobility coefficient is defined as follows.
Mobility k 1 =µ k 1 µ
M 5 1 5 1 5 2 ;
Mobility 2 k 2 =µ 2 k 2 µ 1
where 1 displacing fluid; 2 displaced fluid; k 1 and k 2 permeabilities to
1 and 2, respectively; µ and µ viscosity to 1 and 2, respectively.
2
1
