Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
TWO-PART THIXOTROPIC LOST CIRCULATION SLURRY
Methods and systems of reducing lost circulation in a wellbore are provided. An example method includes providing a pozzolan slurry comprising a pozzolanic material and water; and providing a calcium slurry comprising a calcium source, a high pH activator, and water. The method further comprises allowing the pozzolan slurry and the calcium slurry to remain separate; wherein at least one of the pozzolan slurry and the calcium slurry comprise a thixotropic material; wherein at least one of the pozzolan slurry and the calcium slurry comprise a dispersant; wherein at least one of the pozzolan slurry and the calcium slurry comprise a weighting agent. The method additionally comprises mixing the pozzolan slurry and the calcium slurry to form a two-part thixotropic lost circulation slurry after the allowing the pozzolan slurry and the calcium slurry to remain separate. The method also includes introducing the two-part thixotropic lost circulation slurry to a lost circulation zone within the wellbore; and allowing or causing to allow the two-part thixotropic lost circulation slurry to set into a hardened mass within the lost circulation zone.
TWO-PART THIXOTROPIC LOST CIRCULATION SLURRY
Methods and systems of reducing lost circulation in a wellbore are provided. An example method includes providing a pozzolan slurry comprising a pozzolanic material and water; and providing a calcium slurry comprising a calcium source, a high pH activator, and water. The method further comprises allowing the pozzolan slurry and the calcium slurry to remain separate; wherein at least one of the pozzolan slurry and the calcium slurry comprise a thixotropic material; wherein at least one of the pozzolan slurry and the calcium slurry comprise a dispersant; wherein at least one of the pozzolan slurry and the calcium slurry comprise a weighting agent. The method additionally comprises mixing the pozzolan slurry and the calcium slurry to form a two-part thixotropic lost circulation slurry after the allowing the pozzolan slurry and the calcium slurry to remain separate. The method also includes introducing the two-part thixotropic lost circulation slurry to a lost circulation zone within the wellbore; and allowing or causing to allow the two-part thixotropic lost circulation slurry to set into a hardened mass within the lost circulation zone.
TWO-PART THIXOTROPIC LOST CIRCULATION SLURRY
PISKLAK THOMAS J ( Autor:in ) / LEWIS SAMUEL J ( Autor:in ) / JONES PAUL J ( Autor:in )
04.02.2021
Patent
Elektronische Ressource
Englisch
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