Friction factor calculating formulas and its field application on gas pipeline in sichuan oil field

摘要

Using turbulence mechanics theory, this paper has obtained the correlations among friction factor and Reynolds number and roughness, respectively in smooth pipe, partly rough pipe and full rough pipe. Then, the pipeline operation data of Sichuan Oil Field and mathematical methods have been used to fit friction factor calculating formulas. Lastly, the relative errors of fitted equations are calculated in comparison with other field data. The calculation results show that average relative errors of these formulas are over 9