Patent ID: 11933119
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Civil engineering (Other fields)
Classification: CPC E  C | IPC C  E

Claim 18:
19. A method comprising:
extending a wellbore through a subterranean formation with at least a drill disposed on a drill string while circulating an oil-based drilling fluid to the drill;
detecting a lost circulation zone in the subterranean formation;
separating a portion of fluid from the circulating oil-based drilling fluid;
mixing the separated portion with a metal salt and a metal oxide at a surface location to form a mixture and shearing the mixture at the surface location to form a chemical sealing pill, wherein the chemical sealing pill comprises the separated portion of the oil-based drilling fluid, the metal salt, and the metal oxide; and
after mixing and shearing, introducing the chemical sealing pill as a single mixture into the subterranean formation to mitigate a lost circulation event.