Isolation Valve Cleanup Subs
Remove debris above ball-type isolation valves
Clean up isolation valves with jetting or circulation subs to reduce the risk that debris will hinder valve operation.
The SFIV-II surface-controlled bidirectional isolation valve is actuated through dual hydraulic control lines from the surface. When required (e.g., when the tubing hanger can only accommodate a limited number of penetrations), it can be controlled by a single control line using an optional feature called the single-line switch.
The valve provides a reliable barrier within the completion string and contains fluids during completion and workover operations. By isolating the formation, it prevents formation damage, simplifies completion operations, and increases wellbore safety. The valve
The SFIV-II valve can be used before and during production or injection. It can be remotely opened and closed multiple times using the control lines and maintains its pressure integrity over its predetermined life cycle. Its true fail-as-is (FAI) feature prevents accidental closing or opening in case of a hydraulic system failure. The valve is designed and tested in accordance with API 19V/ISO 28781 V1 and Q1 Type CC standards.
Replacement of the interference collet with a displacement-type design has resulted in a valve that is insensitive to setting depth. Consequently, it can be run as deep and close to the formation as required, minimizing storage effects when the well is shut in for production buildup tests.
Effective well control with unsurpassed reliability and interventionless actuation.
Protects formations from damage and isolates fluids between the reservoir and surface.
Integrated technologies address numerous technical challenges in challenging oil rim environment in the Caspian Sea.