This is Petroleum Engineering related question.

10 MMSCF/D with specific gravity of 0.7 natural gas measured at 14.7 psia and 60F is compressed and to be transmitted from an offshore central processing platform (CPP) to onshore distribution facilities. Currently under consideration is 500 miles transmission pipeline option, with 10-in. diameter and roughness of 0.0005 ft pipe. Assuming that the average flowing temperature is 80F and the inlet pressure is 600 psia, estimate the frictional pressure drop along the pipeline. The friction factor can be calculated using the following equation; 0.5 (7) = 1.14 2 105 ( e 21.25 + RE