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| LaTeX Math Block | ||||
|---|---|---|---|---|
| ||||
S_M = \left ( \frac{k}{k_s} - 1 \right ) \ \ln \left ( \frac{r_s}{r_w} \right ) |
where
| well radius from drilling | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| damaged reservoir radius
| ||||||||
| absolute formation permeability in the undamaged reservoir zone away from well location | ||||||||
| absolute formation permeability in the damaged near-well reservoir zone |
Definition suggest that
- deteriorated near-well reservoir zone
is characterized by a positive skin-factorLaTeX Math Inline body k_s < k
,LaTeX Math Inline body S>0
- improved near-well reservoir zone
is characterized by a negative skin-factorLaTeX Math Inline body k_s > k
.LaTeX Math Inline body S<0
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