Set retarded ultra fine cement compositions and methods

Details Set retarded ultra fine cement compositions and methods Set retarded ultra fine cement compositions and methods

E - Fixed Constructions

21

B

E21B 33/13 (2006.01) C04B 7/00 (2006.01) C04B 24/00 (2006.01) C04B 24/16 (2006.01) C04B 28/02 (2006.01) C09K 8/46 (2006.01)

Patent

CA 2138599

Set retarded ultra fine cement compositions which remain pumpable for a predictable period of time at temperatures up to about 400°F are provided. The compositions are basically comprised of an ultra fine hydraulic cement, sufficient water to form a pumpable slurry and a set retarder comprised of a water soluble aliphatic compound containing at least three carbon atoms and at least one phosphoric acid or phosphonate group.

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