Well cementing composition containing polymaleic anhydride and having improved flow properties
AssigneeCalgon Corporation
InventorsSally L. Adams, Michael M. Cook, Fred David Martin
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Abstract
Aqueous hydraulic cement compositions containing polymaleic anhydride as a flow-property-improving and turbulence-inducing additive and their use in cementing wells is disclosed.
Claims7
A well cementing composition consisting essentially of hydraulic cement in admixture with from about 0.01 to about 5.0 percent by weight, based on weight of hydraulic cement, of polymaleic anhydride having a weight average molecular weight of from about 200 to about 10,000.
An aqueous hydraulic cement slurry composition for use in cementing wells, having improved flow properties and being more readily induced to flow in turbulence, consisting essentially of dry hydraulic cement in admixture with from about 0.01 to about 5.0 percent by weight, based on weight of dry hydraulic cement, of polymaleic anhydride having a weight average molecular weight of from about 200 to about 10,000;
- and sufficient water to make a pumpable aqueous slurry which is capable of setting to form a monolithic solid.
Dependencies are inferred from the claim text.