Oil Well Testing Handbook

Appendix A: Conversion Factors Between Unit Systems

Table A-1: Permeability Conversions

To convert from

To

Multiply by

Inverse

mD

Darcy

1.000000E 03

1.000000E + 03

mD

meter2(m 2)

9.86923E 16

1.01325E + 15

mD

centimeter2(cm 2)

9.86923E 12

1.01325E + 11

mD

micrometer 2( ? 2)

9.86923E 04

1.01325E + 03

mD

1.00000E 03

1.00000E + 03

mD

9.86923E 10

1.01325E + 09

mD

7.32441E 08

1.36530E + 07

mD

3.41780E 11

2.92585E + 10

mD

1.12712E 03

8.87217E + 02

mD

1.42515E 05

7.01681E + 04

mD

ft 2

1.06232E 14

9.41340E + 13

Table A-2: Temperature Conversions

F

C

R

K

Degree Fahrenheit( F)

1.000

( Fm32)/1.8

F + 459.67s

( F + 459.67)/1.8

Degree Celsius ( C)/

1.8( C) + 32

1.000

1.8( C) + 491.67

C + 273.15

Degree Rankine ( R)

R459.67

( R 491.67)/1.8

1.000

R/1.8

Kelvin (K)

1.8(K)-459.67K

273.15

1.8(K)

1.000

Table A-3: Volume Conversion Multiplication Factors

in 3

ft 3

cm 3

m 3

Cubic inches (in 3)

1.0

5.787035 10 4

1.638706 10

1.638706 10 5

Cubic feet (ft 3)

1.728 10 3

1.0

2.831685 10 4

2.831685 10 2

Cubic centimeters(cm 3)

6.102376 10 ?2

3.531466 10 ?5

1.0

1.000 10 ?6

Cubic meters(m 3)

6.102376 10 ?4

3.531466 10

1.000 10 6

1.0

Table A-4: Density Conversion Multiplication Factors

gm/cm 3

lb/ft 3

kg/l

kg/m 3

gm/cm 3

1.0

6.242797 10

1.0

1.000 10 3

lb/ft 3

1.601846 ...

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