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U.S. Department of Energy
Office of Scientific and Technical Information

Oil base well treating fluids thickened by block copolymers

Patent ·
OSTI ID:5400714
An oil based well treating fluid, is described which consists of: a liquid mixture of aliphatic and aromatic hydrocarbons containing (1) at least one dissolved or dispersed polymer of the group consisting of at least one arene/diene block copolymer and mixtures of at least one arene/diene block copolymer with one or more solution-compatible thermoplastic polymers, with the block copolymers having at least one elastomeric block portion and one or more thermoplastic block portions and (2) at least one free-radical-forming polymer crosslinking agent of the group consisting of alkyl peroxides, dialkyl peroxides, hydroperoxides, acyl peroxides and peroxy ketals capable of crosslinking at least one of the dissolved or dispersed polymers within the liquid mixture at a temperature between the surface temperature at the well side and the reservoir temperatures.
Assignee:
Shell Oil Co., Houston, TX
Patent Number(s):
US 4595513
OSTI ID:
5400714
Country of Publication:
United States
Language:
English