PEC EPE Geological
PEC EPE — Geological Engineering (Pakistan Engineering Council)
Depth Energy Mineral ExplorationEnglish
Exam overviewPractice session
Wireline log analysis of a clean sandstone reservoir interval records: • Formation water resistivity Rw = 0.05 Ω·m at formation temperature • Deep resistivity Rt = 20.0 Ω·m • Effective porosity φ = 0.20 (20%) Using Archie's equation with tortuosity factor a = 1.0, cementation exponent m = 2.0, and saturation exponent n = 2.0, what is the water saturation (Sw)?
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