Wells – Processes – Cementing – plugging or consolidating
Reexamination Certificate
2006-12-12
2006-12-12
Bates, Zakiya W. (Department: 3676)
Wells
Processes
Cementing, plugging or consolidating
C106S692000
Reexamination Certificate
active
07147055
ABSTRACT:
The present invention relates to subterranean well cementing operations, and more particularly, to cement compositions having improved corrosion resistance and methods of using such compositions in subterranean formations. The cement compositions generally include an unhydrated cement that includes a high alumina cement, a silica source, and a soluble phosphate; and a set retarder that includes a water soluble carboxylic acid. Optionally, other additives may be included, such as accelerants, dispersants, weighting agents, and the like.
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Brothers Lance E.
Caveny William J.
Palmer Anthony V.
Baker & Botts L.L.P.
Bates Zakiya W.
Halliburton Energy Service,s Inc.
Roddy Craig W.
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