Fluid handling – Processes – Affecting flow by the addition of material or energy
Patent
1990-01-29
1990-09-25
Cohan, Alan
Fluid handling
Processes
Affecting flow by the addition of material or energy
F17D 117
Patent
active
049586530
ABSTRACT:
A method of reducing drag (friction) of a gas (e.g. natural gas) flowing in a gas pipeline at a constant pressure drop between a first point and a second point. The gas flowrate is monitored at the second point as a drag reducer is injected into the gas flow at the first point. The injection rate of the drag reducer is adjusted to provide the maximum flowrate at the second point with the minimum amount of drag reducer. The excess drag reducer is removed from the gas flow at the second point and monitored. Once the maximum flowrate is stabilized, the injection rate of the drag reducer is adjusted to approximately the same rate as any excess drag reducer is being removed at said second point.
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"Flow of Natural Gas Through Experimental Pipe Lines and Transmission Lines", Monograph 9, Bureau of Mines, American Gas Association, N.Y., N.Y., 1956.
Atlantic Richfield Company
Cohan Alan
Faulconer Drude
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