Page 472 - Standard Handbook Petroleum Natural Gas Engineering VOLUME2
P. 472
448 Production
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RESERVOIR TUBINQ FLOWLINE TRANSFER LINE
-
--
* -_ -- -_
pressures (psia); y;v, = inlet and outlet fluid specific weight; vl, ve = inlet and outlet
fluid velocity; g = acceleration; = loss of static pressure head due to fluid flow.
Equation 6-60 can be written in differential form as
dp vdv
-+-+dLsine+dL, =O (6-61)
Y g
where dL sin 8 = dZ and dLw refers to friction multiplying the equation by
y/dL to give
Solving this equation for pressure gradient, and if we consider a pressure drop
as being positive in the direction of flow,
where
Equation 6-62 contains three terms that contribute to the total pressure
gradient, i.e.:
