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 the plugs were measured by a helium porosimeter. Subsequently, all samples were fully saturated with a 0.07 Ω m brine such that Sw = 1. Each sample was placed in a resistivity apparatus, and ΔV values were measured for a current flow of 0.01 A. Determine the formation factor F, for each core plug, and estimate parameters a and m for Archie’s formation factor equation.
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 the plugs were measured by a helium porosimeter. Subsequently, all samples were fully saturated with a 0.07 Ω m brine such that Sw = 1. Each sample was placed in a resistivity apparatus, and ΔV values were measured for a current flow of 0.01 A. Determine the formation factor F, for each core plug, and estimate parameters a and m for Archie’s formation factor equation.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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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 the plugs were measured by a helium porosimeter. Subsequently, all samples were fully saturated with a 0.07 Ω m brine such that Sw = 1. Each sample was placed in a resistivity apparatus, and ΔV values were measured for a current flow of 0.01 A. Determine the formation factor F, for each core plug, and estimate parameters a and m for Archie’s formation factor equation.
|
Core Plug |
ϕ (Fraction) |
ΔV (V) |
|
1 |
0.175 |
1.72 |
|
2 |
0.19 |
1.45 |
|
3 |
0.165 |
1.99 |
|
4 |
0.23 |
1.1 |
|
5 |
0.16 |
2.15 |
|
6 |
0.15 |
2.45 |
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