Wells – Processes – Placing fluid into the formation
Patent
1992-04-17
1994-05-10
Suchfield, George A.
Wells
Processes
Placing fluid into the formation
1663051, 166308, 166309, 252 8551, 252 8553, E21B 4322, E21B 4326, E21B 4327
Patent
active
053100026
ABSTRACT:
An additive for addition to conventional well treatment fluids to enhance the ability of the fluids to be recovered from subterranean formations, to generate a foam in association with the fluids and/or to enhance the ability of the fluids to remove water and other connate fluids interlocked with gas in the formations. The additive includes about 25% to about 50% by volume of a microemulsion generating component which forms an acid and/or water external microemulsion when added to the treatment fluid, and about 50% to about 75% by volume of a foaming agent component. The foaming agent component includes at least one nonionic surface active agent having an HLB of from 12 to 22. The additive is particularly suitable for addition to foam fracturing fluids useful for stimulating tight or otherwise unconventional gas formations. Also provided are a gas well treatment composition employing the inventive additive and a method of treating a subterranean formation in which the inventive composition is employed.
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Blauch Matthew E.
Gardner Tommy R.
King Karen L.
Venditto James J.
Halliburton Company
Suchfield George A.
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