High temperature well cement compositions and methods

Wells – Processes – Cementing – plugging or consolidating

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Details

106730, 106803, 106805, E21B 33138, E21B 3314

Patent

active

051846802

ABSTRACT:
Improved set retarded cement compositions and methods of using such compositions which are substantially non-thinning at high temperatures and which can include fresh or salt water are provided. The compositions are comprised of hydraulic cement, sufficient water to form a pumpable slurry, a set retarder and a delayed viscosifying agent which yields viscosity at high temperatures comprised of a treated depolymerized galactomannan gum.

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