3. The resistivity logs above are for the same interval as the logs for questions 1 & 2. Answer the following questions related to these logs with the following additional information: For Archie's Equations, a=0.81, m=n=2. Also, Rw=0.05 ohm-m. a. Estimate the water saturation for each sandstone zone. b. Which sandstone is a better prospect for producing oil and/or gas? Explain, giving at least two reasons to support your choice.

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