Set retarder compositions, cement compositions, and...

Compositions: coating or plastic – Coating or plastic compositions – Inorganic settable ingredient containing

Reexamination Certificate

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C106S726000, C106S727000, C106S737000, C106S819000, C106S823000

Reexamination Certificate

active

11296784

ABSTRACT:
Cement compositions, that comprise water, a cement, a strength-retrogression additive, and an acid, wherein the acid comprises ethylenediamine tetra acetic acid, nitrilotriacetic acid, or a combination thereof, are provided. Methods of cementing in a subterranean formation, methods of retarding the set time of a cement composition, and set retarder compositions also are provided.

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