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Thixotropic cement slurry and placement method to cure lost circulation
Embodiments of methods for reducing lost circulation in a wellbore comprise inserting a conduit comprising a first and second end and an outer diameter and an inner diameter into the wellbore, and pumping a thixotropic cement slurry, wherein the thixotropic cement slurry will increase in viscosity with no shear and decrease in viscosity with shear, and have a power law exponent value of less than or equal to 0.3 when the thixotropic cement slurry has a density of greater than 12.69 pounds per gallon, through the conduit into the wellbore, in which the thixotropic cement slurry comprises at least one cement, at least one viscosifier, mix water, and one or more than one strength accelerating additives. The method further comprises allowing the thixotropic cement slurry to harden in the wellbore to create a plug, removing the conduit from the wellbore, and reducing lost circulation via the plug in the wellbore.
Thixotropic cement slurry and placement method to cure lost circulation
Embodiments of methods for reducing lost circulation in a wellbore comprise inserting a conduit comprising a first and second end and an outer diameter and an inner diameter into the wellbore, and pumping a thixotropic cement slurry, wherein the thixotropic cement slurry will increase in viscosity with no shear and decrease in viscosity with shear, and have a power law exponent value of less than or equal to 0.3 when the thixotropic cement slurry has a density of greater than 12.69 pounds per gallon, through the conduit into the wellbore, in which the thixotropic cement slurry comprises at least one cement, at least one viscosifier, mix water, and one or more than one strength accelerating additives. The method further comprises allowing the thixotropic cement slurry to harden in the wellbore to create a plug, removing the conduit from the wellbore, and reducing lost circulation via the plug in the wellbore.
Thixotropic cement slurry and placement method to cure lost circulation
SHINE JR JOSEPH MICHAEL (author)
2020-09-22
Patent
Electronic Resource
English
Thixotropic cement slurry and placement method to cure lost circulation
| European Patent Office | 2020
THIXOTROPIC CEMENT SLURRY AND PLACEMENT METHOD TO CURE LOST CIRCULATION
| European Patent Office | 2019
Thixotropic cement slurry and placement method to cure lost circulation
| European Patent Office | 2019
THIXOTROPIC CEMENT SLURRY AND PLACEMENT METHOD TO CURE LOST CIRCULATION
| European Patent Office | 2019
THIXOTROPIC CEMENT SLURRY AND PLACEMENT METHOD TO CURE LOST CIRCULATION
| European Patent Office | 2020