Agglomeration of hydraulic cement powder
AssigneeHalliburton Energy Services, Inc.
InventorsLewis R. Norman, Richard Turton, Huma Hakim
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Abstract
Methods of agglomerating hydraulic cement powder to improve its flow and handling characteristics are provided. One embodiment of the methods of the present invention is comprised of the steps of forming a mixture of the hydraulic cement powder with a particulate solid disintegrating agent, the disintegrating agent having the property of causing the break up of the agglomerated cement powder upon contact with water. Thereafter, the mixture is compressed into agglomerated pellets.
Claims23
A method of agglomerating hydraulic cement powder to improve its flow and handling characteristics comprising the steps of:
- (a) forming a mixture of said hydraulic cement powder with a particulate solid disintegrating agent, said disintegrating agent having the property of causing the break up of agglomerated cement powder upon contact with water;
- and
- (b) compressing said mixture formed in step (a) into pellets.
A method of agglomerating hydraulic cement powder to improve its flow and handling characteristics comprising the steps of:
- (a) mixing a particulate solid, water soluble, hydraulic cement slurry set accelerating agent and a particulate solid, water soluble, hydraulic cement slurry set retarding agent with a volatile non-aqueous solvent to form a binder solution thereof;
- and
- (b) mixing the binder solution formed in step (a) with said hydraulic cement powder in a mixing apparatus whereby said binder solution is distributed onto surfaces of said hydraulic cement powder, said volatile non-aqueous solvent is evaporated and said hydraulic cement powder is granulated.
A method of agglomerating hydraulic cement powder to improve its flow and handling characteristics comprising the steps of:
- (a) mixing a particulate solid, water soluble, hydraulic cement slurry set accelerating agent comprising calcium chloride and a particulate solid, water soluble, hydraulic cement slurry set retarding agent comprising tartaric acid with a volatile non-aqueous solvent to form a solution thereof;
- and
- (b) mixing the solution formed in step (a) with said hydraulic cement powder in a mixing apparatus whereby said solution is distributed onto surfaces of said hydraulic cement powder, said volatile non-aqueous solvent is evaporated and said cement powder is granulated to a selected size in the range of from about 1 millimeter to about 10 millimeters in diameter.
Dependencies are inferred from the claim text.