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US 12,644,036 B2Granted
Set on demand cement
OwnerRadhika Suresh, Angela Doan +2inventors
InventorsRadhika Suresh, Angela Doan, Rostyslav Dolog, Oleg Mazyar
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Abstract
A method of cementing a wellbore includes injecting into the wellbore a cement slurry containing: an accelerator composite having a shell encapsulating a core including an accelerator and a disintegrating agent, the disintegrating agent including at least one of a phase change material or a gas-producing material; a cementitious material; and an aqueous carrier; and releasing the accelerator from the accelerator composite.
Claims11
A method of cementing a wellbore, the method comprising:
- injecting into the wellbore a cement slurry comprising:
- an accelerator composite having a shell encapsulating a core comprising an accelerator and a disintegrating agent, where the disintegrating agent exerts pressure on the shell from within the accelerator composite thereby breaking the shell;
- a cementitious material;
- and
- an aqueous carrier;
- and
- releasing the accelerator from the accelerator composite,
- wherein the releasing the accelerator comprises breaking the shell by heating the disintegrating agent.
5 more elements
Dependencies are inferred from the claim text.