Process for improving vertical conformance in a near...

Details Process for improving vertical conformance in a near... Process for improving vertical conformance in a near...

E - Fixed Constructions

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B

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E21B 33/138 (2006.01) C09K 8/512 (2006.01) C09K 8/88 (2006.01)

Patent

CA 1206869

A PROCESS FOR IMPROVING VERTICAL CONFORMANCE IN A NEAR WELL BORE ENVIRONMENT 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 subter- ranean 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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