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Gas. Water or Oil. Water or Oil. Step 3: Resistivity Logs. ILD (deep). MSFL. Caliper. NPHI. Where do the resistivity logs give different values? This indicates where the fluids in the rocks differ from the drilling fluid In this case, it confirms the gas zone. Gamma Ray. SFL. RHOB).
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Gas Water or Oil Water or Oil Step 3: Resistivity Logs ILD (deep) MSFL Caliper NPHI • Where do the resistivity logs give different values? • This indicates where the fluids in the rocks differ from the drilling fluid • In this case, it confirms the gas zone Gamma Ray SFL RHOB) Shale Siltstone Formation Fluid different from Drilling Fluid Sandstone Formation Fluid similar to Drilling Fluid Water or Oil Siltstone Sandstone Water or Oil Shale Sandstone Courtesy of ExxonMobil