Plugging a tubing/casing annulus in a wellbore with a...

Details Plugging a tubing/casing annulus in a wellbore with a... Plugging a tubing/casing annulus in a wellbore with a...

E - Fixed Constructions

21

B

166/17, 31/8

E21B 43/22 (2006.01) C09K 8/44 (2006.01) C09K 8/512 (2006.01) E21B 33/13 (2006.01)

Patent

CA 1285135

Docket 860021-A PLUGGING A TUBING/CASING ANNULUS IN A WELLBORE WITH A POLYMER GEL ABSTRACT A tubing/casing annulus in a wellbore penetrating a subterranean hydrocarbon-bearing formation is plugged using a gel comprising a high molecular weight, water-soluble carboxylate-containing polymer and a chromic carboxylate complex crosslinking agent. The gel components are combined at the surface and injected into the annulus to form a contin- uous single-phase gel therein.

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