Thru-tubing retrievable intelligent completion system

A thru-tubing completion system comprising:

• a surface control system;
• production tubing disposed in a wellbore of a well;
• a sub-surface completion unit (SCU) configured to pass through the production tubing and to be disposed in a target zone of an open-holed portion of the wellbore and perform completion operations in the target zone, the SCU comprising:
• a SCU wireless transceiver;
• one or more SCU anchoring seals configured to be positioned in an un-deployed position and a deployed position, the un-deployed position of the one or more SCU anchoring seals enabling the SCU to pass through the production tubing disposed in the wellbore of the well, and the deployed position of the one or more SCU anchoring seals providing a seal against a wall of the target zone of the open-holed portion of the wellbore to provide zonal isolation between regions in the wellbore;
• and
• one or more SCU centralizers configured to be positioned in an un-deployed position and a deployed position, the un-deployed position of the one or more SCU centralizers enabling the SCU to pass through the production tubing disposed in the wellbore of the well, and the deployed position of the one or more SCU centralizers positioning the SCU in the target zone of the open-holed portion of the wellbore;
• a down-hole wireless transceiver configured to be disposed at a down-hole end of the production tubing in the wellbore of the well, to be communicatively coupled to the surface control system of the well, to communicate wirelessly with the SCU wireless transceiver, and to provide for communication between the SCU wireless transceiver and the surface control system of the well;
• and
• a positioning device configured to provide a motive force to advance the SCU through the production tubing and the wellbore,
• wherein the SCU is configured to pass completely through the production tubing with the one or more SCU anchoring seals in the un-deployed position and the one or more SCU centralizers in the un-deployed position, and the SCU is configured to be deployed in the target zone physically remote from the production tubing and the down-hole wireless transceiver.

A method of completing a target zone of a wellbore of a well, the method comprising:

• passing a sub-surface completion unit (SCU) completely through production tubing disposed in a wellbore of a well, the SCU comprising:
• one or more SCU anchoring seals configured to provide a seal against a wall of the target zone of an open-holed portion of the wellbore;
• and
• one or more SCU centralizers configured to position the SCU in the target zone of the open-holed portion of the wellbore,
• wherein passing the SCU completely through the production tubing comprises passing the SCU through the production tubing in an un-deployed configuration comprising the one or more SCU centralizers in an un-deployed position configured to enable the SCU to pass through the production tubing and the one or more SCU anchoring seals in an un-deployed position configured to enable the SCU to pass through the production tubing;
• advancing the SCU in the wellbore of the well to the target zone of an open-holed portion of the wellbore such that the SCU is physically remote from the production tubing and the down-hole wireless transceiver;
• deploying the one or more SCU centralizers of the SCU to position the SCU in the target zone of the open-hole portion of the wellbore;
• and
• deploying the one or more SCU anchoring seals of the SCU to seal against the wall of the target zone of the open-hole portion of the wellbore to provide zonal isolation between regions in the wellbore.