发明授权
US07244303B2 Set retarder compositions, cement compositions, and associated methods 有权
设定缓凝剂组合物,水泥组合物和相关方法

Set retarder compositions, cement compositions, and associated methods
摘要:
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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