Washout arrangement for a well

Details Washout arrangement for a well Washout arrangement for a well

1998-06-11

2000-08-01

Bagnell, David

Wells

Expansible anchor or casing

Liner hanger

166 881, E21B 2300

Patent

active

060952431

ABSTRACT:
A washout arrangement for a well where a washout process is to take place to wash cement out of an annulus between two concentric casings 10, 16. Washports 36 are provided in a casing hanger 18, and an axially movable, telescopically extending lower body 40 is provided in a running tool 26 which is to engage with the casing hanger. When the running tool and casing hanger are engaged with each other, the lower body 40 can be moved axially (for example by mounting the lower body on a thread within the running tool and then rotating the lower body) between a position where it closes the washports and a position where the ports are open.

REFERENCES:
patent: 3590922 (1971-07-01), Slack et al.
patent: 3885625 (1975-05-01), Ahlstone
patent: 3989284 (1976-11-01), Blose
patent: 4979566 (1990-12-01), Hosie et al.
patent: 5285853 (1994-02-01), Eckert et al.

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