Wells – Processes – Cementing – plugging or consolidating
Reexamination Certificate
2007-09-25
2007-09-25
Suchfield, George (Department: 3676)
Wells
Processes
Cementing, plugging or consolidating
C166S294000, C106S730000, C106S804000, C507S212000, C507S269000
Reexamination Certificate
active
10413650
ABSTRACT:
Methods of cementing in a subterranean formation may include the steps of: providing a cement composition comprising a cement, water, and a dispersant comprising a low molecular weight starch that comprises anionic groups; placing the cement composition in the subterranean formation; and allowing the cement composition to set therein. In certain embodiments, improved biodegradable dispersants may include low molecular weight starches having anionic groups.
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Eoff Larry S.
Reddy B. Raghava
Baker & Botts
Halliburton Energy Service,s Inc.
Roddy Craig W.
Suchfield George
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