C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
31/22
C09K 8/24 (2006.01)
Patent
CA 2001029
Abstract of the Disclosure An additive for reducing the water loss and improving other properties of well treating fluids in high temperature subterranean environments and well treating fluids including the additive are provided. The additive comprises a mixture of a water soluble polymer and an organic compound, the water soluble polymer being comprised of N-vinyl lactam monomers, or vinyl-containing sulfonate monomers, or both. The organic compound can be selected from lignites, tannins, asphaltic materials, derivatives thereof and mixtures of such dispersants.
Osler Hoskin & Harcourt Llp
Patel Bharat
Phillips Petroleum Company
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