Process for improving vertical conformance in a near well bore e

Details Process for improving vertical conformance in a near well bore e Process for improving vertical conformance in a near well bore e

1983-05-19

1985-01-22

Novosad, Stephen J.

Wells

Processes

Cementing, plugging or consolidating

166270, 166273, E21B 33138, E21B 4322

Patent

active

044946066

ABSTRACT:
An aqueous solution containing a high molecular weight organic polymer and an aqueous solution containing a cross-linking agent are sequentially injected into the near well bore environment of a subterranean formation interposed by a hydrocarbon spacer. The spacer causes the two aqueous solutions to mix in the near well bore environment and a gel is formed which preferentially plugs the relatively highly permeable zones in the near well bore environment thereby improving conformance and flow profiles of fluids subsequently injected into or produced from the formation.

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patent: 4304301 (1981-12-01), Sydansk
patent: 4332297 (1982-06-01), Sandiford
patent: 4413680 (1983-11-01), Sandiford

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