Environmentally benign viscous well treating fluids and methods

Details Environmentally benign viscous well treating fluids and methods Environmentally benign viscous well treating fluids and methods

2006-02-21

2006-02-21

Bagnell, David (Department: 3672)

Wells

Processes

Placing fluid into the formation

C507S273000

Reexamination Certificate

active

07000702

ABSTRACT:
Environmentally safe viscous well treating fluids and methods are provided by the present invention. The treating fluids are basically comprised of water, a viscosity producing polymer, a boron cross-linking agent for cross-linking the polymer, and a delayed cross-link delinker that chelates the boron and breaks the treating fluid into a low viscosity fluid selected from polysuccinamide and polyaspartic acid.

REFERENCES:
patent: 5224546 (1993-07-01), Smith et al.
patent: 5877127 (1999-03-01), Card et al.
patent: 6024170 (2000-02-01), McCabe et al.
patent: 6232273 (2001-05-01), Namba et al.
patent: 6488091 (2002-12-01), Weaver et al.

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