Prevention of latex inversion in saltwater cement...

Details Prevention of latex inversion in saltwater cement... Prevention of latex inversion in saltwater cement...

2008-04-29

2008-04-29

Bates, Zakiya W. (Department: 3676)

Wells

Processes

Cementing, plugging or consolidating

C106S726000

Reexamination Certificate

active

07363977

ABSTRACT:
The prevention of latex inversion in saltwater cement compositions for use in subterranean formations by inclusion of a combination of latex stabilizers and associated methods of cementing. Saltwater cement compositions comprising saltwater, a cement, a latex, a first latex stabilizer comprising a surfactant having the formula:in-line-formulae description="In-line Formulae" end="lead"?R—O—(OCH2CH2)mXMin-line-formulae description="In-line Formulae" end="tail"?wherein R is an alkyl group having in the range of from about 10 carbons to about 20 carbons, m is an integer in the range of from about 10 to about 40, X is OSO3or SO3, and M is a compatible cation, and a second latex stabilizer comprising an alcohol ether sulfate having the formula:in-line-formulae description="In-line Formulae" end="lead"?R1—O—(OCH2CH2)nOSO3Min-line-formulae description="In-line Formulae" end="tail"?wherein R1is an alkyl group having in the range of from about 4 carbons to about 12 carbons, n is an integer in the range of from about 1 to about 10, and M is a compatible cation.

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