Method for thermally insulating wellbores

Details Method for thermally insulating wellbores Method for thermally insulating wellbores

1980-07-18

1981-10-27

Leppink, James A.

Wells

Processes

Heating, cooling or insulating

166302, E21B 4324

Patent

active

042968143

ABSTRACT:
Methods and apparatus for insulating a well bore to reduce heat transfer between fluids flowing through the well bore and surrounding formations wherein a heat activated gel-forming fluid having heat insulating properties when gelled is introduced into the annular space between the well bore and the tubing string contained therein and caused to be gelled.

REFERENCES:
patent: 3525399 (1970-08-01), Bayless et al.
patent: 3664424 (1972-05-01), Penberthy, Jr. et al.
patent: 3718184 (1973-02-01), Bayless et al.
patent: 3719601 (1973-03-01), Jacocks
patent: 3861469 (1975-01-01), Bayless et al.
patent: 4074757 (1978-02-01), Felber et al.
Willhite et al., "Use of an Insulating Fluid for Casing Protection During Steam Insection," Journal of Petroleum Technology, Nov. 1967, pp. 1453-1456.

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