The following data pertaih to a sandstone formation((a 0.81, m 2): formation thickness -15 ft; formation wateralinity =140,000 ppnh, saturation exponert, n-2, and formation temperature 180°F The vertical resistivity profile of the formation is shown by the following figure. R,, ohm.m 10 20

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The following data pertain to a sandstone formation((a 0.81. 2): formation thickness -15
t; formation water alinity 140,000 ppnh saturation exponent, n-2, and formation temperature
180 F The vertiecal resistivity profile of the formation is shown by the following figure.
R, ohmm
10
20
ZONE A
ZONE O
ZONE C
Figwe 2: The vertical resistivity prgile of the formatiom (Problem 2).
If Zone B is water-bearing. estimate its porosity.
Ro=F Rw
(i)
(ii)
If Zone A is an oil zonestimate the otl saturation.
Transcribed Image Text:The following data pertain to a sandstone formation((a 0.81. 2): formation thickness -15 t; formation water alinity 140,000 ppnh saturation exponent, n-2, and formation temperature 180 F The vertiecal resistivity profile of the formation is shown by the following figure. R, ohmm 10 20 ZONE A ZONE O ZONE C Figwe 2: The vertical resistivity prgile of the formatiom (Problem 2). If Zone B is water-bearing. estimate its porosity. Ro=F Rw (i) (ii) If Zone A is an oil zonestimate the otl saturation.
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