Laboratory Study on the Polymer Flexible Cement Slurry System
A polymer flexible cement slurry system has been developed because cement stone has poor deformability and can be destroyed easily in complex underground conditions and the subsequent construction of wells. A lot of laboratory experiments has been done to evaluate the properties of this slurry system and the emphasis was put on the properties of cement stone such as compressive strength, flexural strength, corrosion resistance and volume shrinkage. The result of study indicated, this polymer flexible slurry cement system had properties of resisting high temperature, salt endurance, low fluid loss, zero free liquid, the thickening curve emerged right angle with short transition period and anti-gas channeling. The compression strength of the cement stone was high, plasticity was strengthened, permeability was low, it was good to able to bear corrosion.
Key words: Oil well cement; Strength of cement; Flexibility of cement; Resistance to corrosion
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