Patent ID: 11859483
Assignee: nan
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 9:
10. A wellbore completion method within a wellbore casing, comprising:
divide a target portion of the wellbore casing into N distinct portions along a length of the wellbore casing,
insert a wellbore completion tool into the wellbore casing,
from a most downstream portion within the target portion, perform perforation operations for each of the N distinct portions,
select the most downstream portion without perforation,
position the wellbore completion tool at the selected portion,
perform isolation operations to releasably fluidly isolate the selected portion from downstream such that, the selected portion is isolated from substantially all downstream perforation clusters,
generate a cluster of perforations at the fluidly isolated selected portion,
perform a cluster skin-repairing operation by pumping, from upstream, a non-particulate skin-repairing fluid at a pumping pressure such that a breakdown pressure of a geological formation surrounding the wellbore casing at the cluster of perforations is exceeded, and
upon the breakdown pressure is exceeded, reestablish fluid communication between the selected portion and the downstream perforation clusters,

after clusters of perforations have been formed at substantially all N distinctive portions, remove the wellbore completion tool from the wellbore, and
perform completion operations to complete opening of the geological formations through the generated clusters of perforations.