Method of treating a subterranean formation with a polymeric div

Details Method of treating a subterranean formation with a polymeric div Method of treating a subterranean formation with a polymeric div

1976-03-04

1977-02-01

Novosad, Stephen J.

Wells

Processes

Specific low fluid loss feature for fracturing fluid or...

166295, 166282, 166308, 175 72, C09K 702, E21B 33138, E21B 4326

Patent

active

040057534

ABSTRACT:
A water-insoluble particulate composition having controlled slow oil-solubility at temperatures in excess of 350.degree. F. is disclosed. The composition is comprised of solid particles of a homogeneous mixture of (1) polyethylene, ethylene-vinyl acetate copolymer containing about 15 to 30 weight percent vinyl acetate, or admixtures of these polymers; (2) a polyamide having a melting point of between about 400.degree. F. and 460.degree. F.; and (3) a softening agent such as a long chain aliphatic diamide having a melting point between about 280.degree. F. and 300.degree. F., or a polyterpene resin having a melting point of between 230.degree. F. and 275.degree. F. Also disclosed is a method of using this particulate composition in well drilling and treating operations where formation temperatures of 350.degree. F. or above are encountered.

REFERENCES:
patent: 3302719 (1967-02-01), Fischer
patent: 3455390 (1969-07-01), Gallus
patent: 3593794 (1971-07-01), Fischer et al.
patent: 3630280 (1971-12-01), Fischer et al.
patent: 3684012 (1972-08-01), Scheffel et al.
patent: 3717204 (1973-02-01), Scheffel et al.

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