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US 12,686,805 B2Granted
Thixotropic slurry with enhanced reliability for use in a wellbore
AssigneeHalliburton Energy Services, Inc.
InventorsSandip Prabhakar Patil, Malharrao Hambirrao Jadhav, Ganesh Shriniwas Pangu
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Abstract
A thixotropic slurry material can be used in a wellbore during a wellbore operation. The wellbore operation can include a drilling operation, a cementing operation, or any other suitable operation that may include injecting a liquid material into the wellbore. The thixotropic slurry material can be a mixture of a cement, a clay mineral, and a suspending agent and can be injected into a wellbore during the wellbore operation.
Claims20
A thixotropic slurry material comprising:
- a hydraulic cement;
- a blend of a clay mineral, a suspending agent, and amorphous silica;
- water;
- and
- wherein the clay mineral is present in an amount of 14.9 weight percent to 20 weight percent of the blend, the suspending agent is present in an amount of 2 weight percent to 2.1 weight percent of the blend, the amorphous silica is present in an amount of 78 weight percent to 83 weight percent of the blend, and the thixotropic slurry material has a 10 second gel strength of between 8 lbf/100 ft2 to 20 lbf/100 ft2 and a rheology including a yield point of between 3 lbf/100 ft2 to 9 lbf/100 ft2 at each of 3 RPM and 6 RPM, at a temperature of 130° F.
2 more elements
A method comprising:
- providing a base material comprising a hydraulic cement and a blend of a clay mineral, a suspending agent, and amorphous silica, wherein the clay mineral is present in an amount of 14.9 weight percent to 20 weight percent of the blend, the suspending agent is present in an amount of 2 weight percent to 2.1 weight percent of the blend, and the amorphous silica is present in an amount of 78 weight percent to 83 weight percent of the blend;
- adding water to the base material to generate a thixotropic slurry material having a 10 second gel strength of between 8 lbf/100 ft2 to 20 lbf/100 ft2 and a rheology including a yield point of between 3 lbf/100 ft2 to 9 lbf/100 ft2 at each of 3 RPM and 6 RPM, at a temperature of 130° F.;
- contacting a permeable zone in a wellbore with the thixotropic slurry material;
- and
- performing a wellbore operation within the wellbore.
2 more elements
Dependencies are inferred from the claim text.