Wells – Processes – Cementing – plugging or consolidating
Patent
1985-09-24
1987-03-17
Novosad, Stephen J.
Wells
Processes
Cementing, plugging or consolidating
166281, 252 8554, E21B 3313
Patent
active
046499997
ABSTRACT:
The present invention relates to a thermally stable crosslinked gelled fluid for use in the treatment of subterranean formations penetrated by a well bore. The fluid composition comprises a pH adjusted aqueous liquid, a gelling agent comprising a selected modified cellulose ether, a crosslinking agent comprising a zirconium IV-containing compound and any additional additives that may be present. The fluid composition is thermally stable under shear at temperatures in excess of about 200.degree. F.
REFERENCES:
patent: 3378070 (1968-04-01), Wessler et al.
patent: 4202795 (1980-05-01), Burnham et al.
patent: 4477360 (1984-10-01), Almond
patent: 4524829 (1985-06-01), Hanlon et al.
patent: 4552215 (1985-11-01), Almond et al.
patent: 4553601 (1985-11-01), Almond et al.
Sandy Joe M.
Smith Gerald D.
Halliburton Company
Kent Robert A.
Novosad Stephen J.
Odar Thomas J.
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