Patent ID: 11933139
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 9:
10. A system for removing filter cake from a subterranean wellbore, the system comprising:
a string of production tubing extending into the wellbore,
a completion string defined at a lower end of the production tubing, the completion string including one or more screen assemblies coupled therein;
a shifting tool coupled within the completion string, the shifting tool including a circulation port extending between a central flow channel and an exterior of the shifting tool and a sleeve assembly selectively movable within the central flow channel between a first longitudinal position wherein the circulation port is obstructed and a second longitudinal position wherein the circulation port is closed; and
a running tool at a lower end of a conveyance extending through the string of production tubing, the running tool selectively operable to move the sleeve assembly between the first and second longitudinal positions and to deliver a spotting fluid from the conveyance through the shifting tool.