Placement aid for dual injection placement techniques

Details Placement aid for dual injection placement techniques Placement aid for dual injection placement techniques

1990-02-27

1991-03-26

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

166285, 166292, 166294, E21B 33138

Patent

active

050021273

ABSTRACT:
A method of controlling the permeability of underground well formations by the placement of a chemical barrier is provided. A first fluid and a second fluid are substantially simultaneously injected into the formation via a well bore wherein the first fluid generally contains either a viscosifying agent or a permeability reducing agent and the second fluid contains a sealant. As the two fluids extend radially from the well bore, the injection pressures of the first and second fluids are substantially balanced such that migration of the second fluid into portion of the formation occupied by the first fluid is inhibited.

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Paper No. 374032 titled "Influence of Production Rate and Oil Viscosity on Water Coning" by Flores, 1974.
Article title "Artificial Barriers May Control Water Coning-1", Oil and Gas Journal, Oct. 7, 1974.
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Paper titled "Two Water Control Sealant System for Matrix & Channel Plugging" by Cole et al., 1978.

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