Page 281 - Petroleum Production Engineering, A Computer-Assisted Approach

Guo, Boyun / Petroleum Production Engineering, A Computer-Assisted Approach 0750682701_appendix Final Proof page 282 5.1.2007 9:59pm Compositor Name: PDjeapradaban

282 APPENDICES
Appendix A: Unit Conversion Factors
Quantity U.S. Field unit To SI unit To U.S. Field unit SI unit
Length (L) feet (ft) 0.3084 3.2808 meter (m)
mile (mi) 1.609 0.6214 kilometer (km)
inch (in.) 25.4 0.03937 millimeter (mm)
Mass (M) ounce (oz) 28.3495 0.03527 gram (g)
pound (lb) 0.4536 2.205 kilogram (kg)
lbm 0.0311 32.17 slug
3
3
Volume (V) gallon (gal) 0.003785 264.172 meter (m )
3
3
3
cu. ft. (ft ) 0.028317 35.3147 meter (m )
3
3
barrel (bbl) 0.15899 6.2898 meter (m )
3
3
Mcf (1,000 ft , 28.317 0.0353 Nm (15 8C, 101:325 kPa)
60 8F, 14:7 psia)
2
2
2
sq. ft (ft ) 9:29 10 2 10.764 meter (m )
2
2
Area (A) acre 4:0469 10 3 2:471 10 4 meter (m )
sq. mile 2.59 0.386 (km) 2
2
Pressure (P) lb=in: (psi) 6.8948 0.145 kPa (1000 Pa)
psi 0.0680 14.696 atm
psi/ft 22.62 0.0442 kPa/m
inch Hg 3:3864 10 3 0:2953 10 3 Pa
Temperature (t) F 0.5556(F-32) 1.8Cþ32 C
Rankine (8R) 0.5556 1.8 Kelvin (K)
Energy/work (w) Btu 252.16 3:966 10 3 cal
Btu 1.0551 0.9478 kilojoule (kJ)
ft-lbf 1.3558 0.73766 joule (J)
hp-hr 0.7457 1.341 kW-hr
Viscosity (m) cp 0.001 1,000 Pa s
lb/ft sec 1.4882 0.672 kg/(m-sec) or (Pa s)
2
lbf-s=ft 2 479 0.0021 dyne-s=cm (poise)
2
Thermal Btu-ft=hr-ft -F 1.7307 0.578 W/(m K)
conductivity (k)
Specific heat (C p ) Btu/(lbm 8F) 1 1 cal/(g 8C)
Btu/(lbm 8F) 4:184 10 3 2:39 10 4 J.(kg K)
Density (P) lbm=ft 3 16.02 0.0624 kg=m 3
2
Permeability (k) md 0.9862 1.0133 mD ( ¼ 10 15 m )
3
md ( ¼ 10 darcy) 9:8692 10 16 1:0133 10 15 m 2