Cementing a geothermal wellbore
AssigneeHalliburton Energy Services, Inc.
InventorsPaul J. Jones, Siva Rama Krishna Jandhyala, Walmy Cuello Jimenez
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Abstract
A method of cementing a geothermal wellbore includes pumping a first volume of cement slurry down a wellbore. The first volume of cement slurry has a first water to cement ratio. A second volume of cement slurry is pumped down the wellbore. The second volume of cement slurry has a second water to cement ratio that is less than the first water to cement ratio. The first volume of cement slurry hardens at a vertical portion of the wellbore, and the second volume of cement slurry hardens at a horizontal portion of the wellbore.
Claims20
A method of cementing a geothermal wellbore, comprising:
- pumping a first volume of cement slurry down a wellbore, wherein the first volume of cement slurry has a first water to cement ratio;
- and
- pumping a second volume of cement slurry down the wellbore, wherein the second volume of cement slurry has a second water to cement ratio that is less than the first water to cement ratio,
- wherein the pumping of the second volume of cement slurry is performed after the pumping of the first volume of cement slurry such that the first volume of cement slurry hardens at a vertical portion of the wellbore and the second volume of cement slurry hardens at a horizontal portion of the wellbore at a lower elevation than the first volume of cement slurry.
Dependencies are inferred from the claim text.