Thermal insulation method

Details Thermal insulation method Thermal insulation method

1980-01-29

1981-03-31

Novosad, Stephen J.

Wells

Processes

Heating, cooling or insulating

166 57, 166DIG1, 166288, 252 855R, 252 62, E21B 3600, E21B 4324

Patent

active

042587913

ABSTRACT:
A method of insulating a well bore with a pumpable, oil base packer fluid which gels to a thick grease-like consistency at elevated temperatures, the packer fluid comprising a liquid oleaginous phase, an aqueous phase, an oleophilic polymer such as a copolymer of maleic anhydride and a long chain alpha-olefin, a water-in-oil emulsifier and lime.

REFERENCES:
patent: 2946746 (1960-07-01), Keller, Jr. et al.
patent: 3168475 (1965-02-01), Jordan et al.
patent: 3494865 (1970-02-01), Andrews, Jr. et al.
patent: 3642624 (1972-02-01), Howland et al.
patent: 3650327 (1972-03-01), Burnside
patent: 3719601 (1973-03-01), Jacocks
patent: 3831678 (1974-08-01), Mondshine
patent: 3899026 (1975-08-01), Culter

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