Oil recovery process using a viscosity adjusted gelation system

Details Oil recovery process using a viscosity adjusted gelation system Oil recovery process using a viscosity adjusted gelation system

1986-02-11

1987-07-14

Novosad, Stephen J.

Wells

Processes

Distinct, separate injection and producing wells

166273, 166274, E21B 3313

Patent

active

046796258

ABSTRACT:
A gelation system for reducing the permeability of a subterranean region is provided by sequentially injecting slugs of a polymer solution and a crosslinking agent solution capable of crosslinking the polymer. The viscosity of the crosslinking agent solution is adjusted to facilitate mixing of the slugs in the desired treatment region to a form gel therein and minimize premature gelation outside of the treatment region.

REFERENCES:
patent: 3266570 (1966-08-01), Gogarty
patent: 3502146 (1970-03-01), Hurd
patent: 4009755 (1977-03-01), Sandiford
patent: 4031958 (1977-06-01), Sandiford et al.
patent: 4302341 (1981-11-01), Watson
patent: 4304300 (1981-12-01), Watson
patent: 4332297 (1982-06-01), Sandiford
patent: 4460481 (1984-07-01), Schievelbein

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