earth materials

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Question 33994

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Earth Materials

3) Based on the results from problem 1 and 2, estimate the hydrocarbon saturation in the reservoir if the log analysis indicates that the porosity is 20% and the true formation resistivity is 5.25 Nm.

Question 33993

Verified

Earth Materials

2) Sample 4 from the previous data was flooded with crude oil, in several steps, in order to displace the brine. The remaining water saturation and E values were measured a teach of these displacement steps. Based on the measured data given below and other data from problem 1 calculate the true formation resistivity Rt as a function of water saturation Sw and subsequently determine the saturation exponent n of the Archie's saturation equation.

Question 33992

Verified

Earth Materials

1) Six cylindrical core plugs of 2.54 cm diameter and 3.81 cm length were taken from an Alaskan North Slope reservoir. After cleaning porosities of all plugs were measured by a helium porosimeter. Subsequently, all samples were fully saturated with a 0.07 Qm brine such that, Sw-1. Each sample was placed in a resistivity apparatus and voltage (E) values were measured for current flow of0.01 A. Determine the formation factor F, for each core plug and estimate parameters a and m for archie's formulation factor equation.

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