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US 12,590,506 B1Granted
Process for cementing a portion of a wellbore using a red mud cement composition
AssigneeKing Fahd University of Petroleum and Minerals
InventorsAhmed Abdulhamid Ahmed Mahmoud, Salaheldin Mahmoud Ahmed Ahmed Elkatatny
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Abstract
A method of cementing a portion of a wellbore involving introducing a well cement slurry into the portion of the wellbore and allowing the well cement slurry to cure, thereby forming a cured wellbore cement sheath. The well cement slurry includes a hydraulic cement, red mud which is present in an amount of 2.5% to 50% by weight of cement (% BWOC), a viscosifier, a fluid loss additive, and water.
Claims20
A method of cementing a portion of a wellbore, the method comprising:
- introducing a well cement slurry into the portion of the wellbore, the well cement slurry comprising:
- a hydraulic cement;
- red mud present in an amount of 2.5 to 50% by weight of the hydraulic cement (% BWOC);
- a viscosifier;
- a fluid loss additive;
- and
- water, and
- allowing the well cement slurry to cure against a wall of the wellbore thereby forming a cemented wellbore coated with a cured wellbore cement sheath,
- wherein the fluid loss additive is present in the well cement slurry in an amount of 0.4 to 0.6% BWOC, and
- wherein the well cement slurry has a fluid loss of 10 to 100 mL/30 min.
7 more elements
Dependencies are inferred from the claim text.