HWK 5 solution

# HWK 5 solution - than 50 and the porosity is larger than 18...

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PGE 203 HWK 5 Due at start of lecture: March 8. (1) For the sand that is shown between 7436 - 7468' on the log that is attached make an excel spread sheet plot of water saturation and porosity versus depth. Start the plot at 7436' and make calculations every two feet through 7468'. Plot both values on the same graph as percentages with depth descending. (+8 pts) If the graph is printed with the depth on the x rather than the y axis deduct 1 point. Spot check the data range and deduct 2 points if it appears there is a calculation problem in general. (2) If water free hydrocarbon production can likely be established if the water saturation is less

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Unformatted text preview: than 50% and the porosity is larger than 18%, what is the net productive thickness of the formation? You may assume the water resistivity is 0.028 ohm-m^2/m. Use the red resistivity line and the black (density porosity) line. Out of a total of 32' the net pay thickness is 24'. (+2 pts) Any reasonable estimate less than the total thickness is acceptable for full credit. 0.2 1.0 10. Resistivity 60% 30% Porosity Scales: Porosity is from 0 to 60% in increments of 6%/division. Resistivity is a log scale starting at 0.2 on the left against of the depth track and ending at 10 ohm-m^2/m....
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HWK 5 solution - than 50 and the porosity is larger than 18...

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