Determining water saturation
|Exploring for Oil and Gas Traps|
|Series||Treatise in Petroleum Geology|
|Part||Predicting the occurrence of oil and gas traps|
|Chapter||Predicting reservoir system quality and performance|
|Author||Dan J. Hartmann, Edward A. Beaumont|
Water saturation (Sw) can be measured directly from a sealed core, which is an expensive method, or it can be calculated from the Archie equation, which is less expensive. Sw can also be estimated using a graphical representation of the Archie equation known as the Pickett plot.
- Archie equation
- Determining Rt
- Determining porosity from density-neutron logs
- Calculating Rw from SP logs
- Pickett plot construction
- Archie, G. E., 1942, The electrical resistivity log as an aid in determining some reservoir characteristics: Petroleum Transactions of AIME 146: 54–62.
- Pickett, G. R., 1973, Pattern recognition as a means of formation evaluation: The Log Analyst, vol. 14, no. 4, p. 3–11.