Thixotropic fluid for well insulation

Details Thixotropic fluid for well insulation Thixotropic fluid for well insulation

1995-11-16

1997-10-14

Anthony, Joseph D.

Earth boring, well treating, and oil field chemistry

Well treating

Contains organic component

507901, 507904, 507925, 507926, 507935, 166272, 166288, 166302, 252 62, 25231501, 2523152, C09K 700, E21B 3600, E21B 4324, B01J 1300

Patent

active

056772670

ABSTRACT:
A thixotropic thermal insulating fluid includes a heavy hydrocarbon, water and oleophilic clay, wherein said heavy hydrocarbon is present in an amount of between about 75% to about 92% by volume of the fluid, said water is present in an amount of between about 5% to about 15% by volume of the fluid, and said oleophilic clay is present in an amount of between about 3% to about 10% by volume of the fluid. The fluid may be prepared by mixing water in an amount of between about 5% to about 15% by total volume of the fluid with oleophilic clay in an amount of between about 3% to about 10% by total volume of the fluid so as to provide a substantially homogeneous first gel product; and mixing said first gel product with a heavy hydrocarbon in an amount of between about 75% to about 92% by total volume of the fluid under agitation for a time sufficient to provide a second thixotropic gel product.

REFERENCES:
patent: 3642624 (1972-02-01), Howland et al.
patent: 3831678 (1974-08-01), Mondshine
patent: 4258791 (1981-03-01), Brandt et al.
patent: 4296814 (1981-10-01), Stalder et al.
patent: 4528104 (1985-07-01), House et al.
patent: 4671883 (1987-06-01), Connell et al.
patent: 4877542 (1989-10-01), Lon et al.

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