Lamellar micelle containing compositions which exhibit retro-vis

Details Lamellar micelle containing compositions which exhibit retro-vis Lamellar micelle containing compositions which exhibit retro-vis

1973-11-07

1976-05-04

Guynn, Herbert B.

Compositions

Leather or fur treating

166308, 175 65, 252 85C, 252 333, 252308, 252309, 252312, C09K 702, E21B 4326

Patent

active

039546276

ABSTRACT:
Compositions containing lamellar micelles and which exhibit retro-viscous property at noncryogenic temperatures are prepared by mixing 4-15 percent of a surfactant (preferably an alkaryl sulfonate having an average equivalent weight of 350-525), 30-70 percent of a liquid hydrocarbon, 15-66 percent of water and optionally up to 20 percent of a cosurfactant, preferably an alcohol containing 1-20 carbon atoms, and/or electrolyte (preferably inorganic salt). The micelles have an axial ratio of at least 3.5 and preferably the composition has a viscosity of at least 75 cp. at a shear rate of 10 sec.sup.- .sup.1 at 23.degree.C. The composition is substantially optically clear, phase stable, birefringent, and the flow properties are such that substantially large increases in flow rate, e.g. 20-fold, can be realized at very small increases in pressure drop, e.g. 5 percent. Uses for the compositions include stimulation of wells (e.g. fracturing fluids), drilling fluids, carrier fluids in pipelines, fluidics, cutting oils, and similar applications.

REFERENCES:
patent: 3254714 (1966-06-01), Gogarty et al.
patent: 3275075 (1966-09-01), Gogarty et al.
patent: 3477511 (1969-11-01), Jones et al.
patent: 3734856 (1973-05-01), Son
patent: 3822746 (1974-07-01), Gogarty

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