Water based compositions for sealing subterranean zones and methods
AssigneeHalliburton Energy Services, Inc.
InventorsRonald E. Sweatman, Archie J. Felio, James F. Heathman
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Abstract
The present invention provides water based compositions and methods of using the compositions for sealing subterranean zones. The compositions are basically comprised of water, an aqueous rubber latex, an organophillic clay and sodium carbonate.
Claims27
A composition for sealing a subterranean zone to prevent the uncontrolled flow of fluids into or from the zone consisting essentially of:
- water present in an amount in the range of from about 6% to about 50% by weight of said composition;
- an aqueous rubber latex present in an amount in the range of from about 33% to about 67% by weight of said composition;
- an organophillic clay present in an amount in the range of from about 13% to about 22% by weight of said composition;
- sodium carbonate present in an amount in the range of from about 2.7% to about 4.4% by weight of said composition;
- and
- a biopolymer present in an amount in the range of from about 0.1% to about 0.2% by weight of said composition.
A composition for sealing a subterranean zone to prevent the uncontrolled flow of fluids into or from the zone consisting essentially of:
- water present in an amount in the range of from about 30% to about 42% by weight of said composition;
- an aqueous styrene/butadiene latex present in an amount in the range of from about 39% to about 47% by weight of said composition;
- an alkyl quaternary ammonium bentonite clay present in an amount in the range of from about 16% to about 19% by weight of said composition;
- sodium carbonate present in an amount in the range of from about 3.3% to about 3.7% by weight of said composition;
- and
- welan gum present in an amount in the range of from about 0.1% to about 0.2% by weight of said composition.
A method of sealing a subterranean zone to prevent the uncontrolled flow of fluids into or from the zone comprising the steps of:
- preparing a subterranean zone sealing composition consisting essentially of water, an aqueous rubber latex, an organophillic clay and sodium carbonate;
- and
- introducing said sealing composition into said zone.
Dependencies are inferred from the claim text.