Wells – Processes – Cementing – plugging or consolidating
Reexamination Certificate
2007-05-15
2007-05-15
Bates, Zakiya W. (Department: 3676)
Wells
Processes
Cementing, plugging or consolidating
Reexamination Certificate
active
10872997
ABSTRACT:
The present invention provides a method of cementing in a subterranean formation that includes providing a cement composition that includes water, cement, and a fluid loss control additive that includes a water-soluble hydrophobically modified polymer or a hydrophilically modified water-soluble polymer; placing the cement composition into the subterranean formation; and allowing the cement composition to set therein. In certain embodiments, the water-soluble hydrophobically modified polymer or the hydrophilically modified water-soluble polymer may include a polymer backbone that comprises polar heteroatoms. In another embodiment, the water-soluble hydrophobically modified polymer may be a reaction product of a hydrophobic compound with a polyvinylamine, a poly(vinylamine/vinyl alcohol), or an alkyl acrylate polymer.
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BJ Services Company,Aquacon, Product Information, Au
Dalrymple Eldon D.
Eoff Larry S.
Reddy B. Raghava
Baker & Botts
Bates Zakiya W.
Halliburton Energy Service,s Inc.
Kent Robert A.
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