Example 4: If mud resistivity Rm= 1.2 Q.m at 75 °F. Use a chart and an equation to find Rm at 160 °F.

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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Example 4: If mud resistivity Rm= 1.2 Q.m at 75 °F. Use a chart and an
equation to find Rm at 160 °F.
Transcribed Image Text:Example 4: If mud resistivity Rm= 1.2 Q.m at 75 °F. Use a chart and an equation to find Rm at 160 °F.
Schlumberger
Gen-6
(former Gen-9)
General
Resistivity of NaCI Water Solutions
Gen
grains/gal
at 75°F
10
ppm
200
8
10
6
300
E15
5
4.
400
E 20
3
500
25
30
600
700
800
2
40
. 50
1,000
1,200
1,400
1
1,700
2,000
100
0.8
NaCI
concentration
(ppm or
grains/gal)
0.6
150
3,000
0.5
4,000
E 200
0.4
5,000
250
Resistivity
of solution
(ohm-m)
6,000
7.000
8,000
300
0.3
400
0.2
500
10,000
12,000
14,000
17,000
20,000
1,000
0.1
0.08
30,000
- 1,500
40,000
E 2,000
0.06
2,500
3,000
50,000
0.05
60,000
70,000
80,000
100,000
120,000
140,000
170,000
200,000
250,000
280,000
0.04
– 4,000
5,000
0.03
0.02
300,000
10,000
15,000
20,000
300 350 400
0.01
250
125 150 200
120 140 160 180 200
100
40
75
50 60 70 80 90 100
°F 50
°C 10
20 30
Temperature
O Schlumberger
Transcribed Image Text:Schlumberger Gen-6 (former Gen-9) General Resistivity of NaCI Water Solutions Gen grains/gal at 75°F 10 ppm 200 8 10 6 300 E15 5 4. 400 E 20 3 500 25 30 600 700 800 2 40 . 50 1,000 1,200 1,400 1 1,700 2,000 100 0.8 NaCI concentration (ppm or grains/gal) 0.6 150 3,000 0.5 4,000 E 200 0.4 5,000 250 Resistivity of solution (ohm-m) 6,000 7.000 8,000 300 0.3 400 0.2 500 10,000 12,000 14,000 17,000 20,000 1,000 0.1 0.08 30,000 - 1,500 40,000 E 2,000 0.06 2,500 3,000 50,000 0.05 60,000 70,000 80,000 100,000 120,000 140,000 170,000 200,000 250,000 280,000 0.04 – 4,000 5,000 0.03 0.02 300,000 10,000 15,000 20,000 300 350 400 0.01 250 125 150 200 120 140 160 180 200 100 40 75 50 60 70 80 90 100 °F 50 °C 10 20 30 Temperature O Schlumberger
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