Installing casing with improved casing/cement bonding

Details Installing casing with improved casing/cement bonding Installing casing with improved casing/cement bonding

1986-04-08

1988-01-05

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

166242, E21B 3314

Patent

active

047169656

ABSTRACT:
In order to prevent gas migration along the outer surface of a casing which is cemented in a well, the casing is provided with casing-surrounding sheaths of an elastomeric foam, which sheaths are able to seal-off the spacing that may be formed between the casing and the cement.

REFERENCES:
patent: 2230626 (1941-02-01), Miller
patent: 3110346 (1963-11-01), Spurlock et al.
patent: 3387656 (1968-06-01), Guest et al.
patent: 3387661 (1968-06-01), Evans et al.
patent: 3918522 (1975-11-01), Suman, Jr.
patent: 4440226 (1984-04-01), Suman, Jr.
patent: 4495997 (1985-01-01), Scott et al.
patent: 4607698 (1986-08-01), Wood

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