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→Methods for determining fluid contacts
| [[Production problems#Water-gas coning|Coning]], [[degassing]], etc. may lead to anomalous recoveries
| [[Production problems#Water-gas coning|Coning]], [[degassing]], etc. may lead to anomalous recoveries
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| [[Calculating Sw from the Archie equation|Saturation determination: well logs]]
| rowspan = 2 | [[Calculating Sw from the Archie equation|Saturation determination: well logs]] || Estimates fluid contacts from changes in fluid saturations or mobility with depth || Low cost Accurate in simple lithologies || Saturation must be calibrated to production
| Estimates fluid contacts from changes in fluid saturations or mobility with depth
| Low cost Accurate in simple lithologies
| Saturation must be calibrated to production
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