Treating wells to mitigate flow-after-cementing

Details Treating wells to mitigate flow-after-cementing Treating wells to mitigate flow-after-cementing

1978-10-16

1980-11-25

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

106 85, 166293, E21B 33138, E21B 3314

Patent

active

042352916

ABSTRACT:
A method of cementing a well drilled into the earth is disclosed wherein there is formed a pumpable thixotropic cement slurry having essentially zero water separation at downhole conditions and being formed of Portland cement, bentonite and water. This cement slurry is injected into a well and allowed to set.

REFERENCES:
patent: 2705050 (1955-03-01), Davis
patent: 3197317 (1965-07-01), Patchen
patent: 3227213 (1966-01-01), Smith
patent: 3376146 (1968-04-01), Mitchell
patent: 3391737 (1968-07-01), Havens
patent: 3409093 (1968-11-01), Cunningham et al.
patent: 3581825 (1971-06-01), Messenger
patent: 3582375 (1971-06-01), Tragesser, Jr.
patent: 4089376 (1978-05-01), Messenger
patent: 4120360 (1978-10-01), Messenger

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