Fluid handling – Processes – Affecting flow by the addition of material or energy
Patent
1976-03-10
1980-09-09
Cohan, Alan
Fluid handling
Processes
Affecting flow by the addition of material or energy
252 333, 137807, C01M 140
Patent
active
042212294
ABSTRACT:
A fluidic fluid composition containing lamellar micelles and which exhibits retro-viscous properties at noncryogenic temperatures is composed of 7.00-7.35% of a surfactant (preferably petroleum sulfonate having an average equivalent weight of 350-525), 50.00-54.00% of liquid hydrocarbon, 24.80-28.00% of water and optionally up to 13.00-13.95% of a cosurfactant (preferably an alcohol containing 1-20 carbon atoms) and/or electrolyte (preferably inorganic salt). The micelles within the composition must have an axial ratio of at least 3.5. The composition is substantially optically clear, phase stable, birefrigent, and the flow properties are such that substantially large increases in flow rates, e.g. 20-fold, can be realized at very small pressure increases, e.g. 5%. Additional additives to impart desired properties can be included with the composition.
REFERENCES:
patent: 2417850 (1947-03-01), Winslow
patent: 2661596 (1953-12-01), Winslow
patent: 3416549 (1968-12-01), Chaney
patent: 3548852 (1970-12-01), Fisher
Dreher Karl D.
Gogarty William B.
Cohan Alan
Hummel Jack L.
Marathon Oil Company
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