Page 665 - Air and Gas Drilling Manual

Table A-2: Definitions of metric SI quantities
2
Force Appendix A: Dimensions and Units, Conversion Factors A-3
1 N = 1 kg-m/sec
4 2
Area 1 Hectare (ha) = 10 m = 100 m square
Energy (or work) 1 Joule (J) = 1 N-m
3
Flowrate m /sec = 60,000 lpm
Length 1 centimeter = 10 millimeter
1 m = 100 centimeter
1 kilometer = 1,000 m

Mass 1 kg = 1,000 gram
1 metric ton = 1,000 kg
Power 1 Watt = 1 N-m/sec

Velocity 1 kph = 1,000 m/hr = 0.277 m/sec
3
Volume 1 m = 1,000 liter
3
1 liter = 10 cm
Weight See Force above

Table A-3: Basic quantities English to metric SI conversions
English unit SI unit

Acceleration of gravity 32.2 ft/sec 2 9.81 m/sec 2
3
Density of water (at 39.4˚F 1.94 slug/ft 1,000 kg/m 3
or 4˚C)
Specific weight of water 62.4 lb/ft 3 9,810 N/m 3

Standard sea level atmospheric pressure
API (at 60˚F) 14.966 psia
ASME (at 68˚F) 14.7 psia
UK (at 60˚F) 30.00 inches of Hg
Continental Europe (at 15˚C) 750 mm of Hg