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SFIV-II

Surface-controlled bidirectional isolation valve

Actuate with one or two control lines

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.

Reduce formation damage and workover costs

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

prevents fluid loss
improves well productivity by providing a fullbore ID
enables multiple perforating runs without killing the well
minimizes interventions with remote opening and closing of the valve
reduces rig time by eliminating the need to run a plug
improves safety when perforating.

Rely on qualification over its lifetime

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.

Use at any depth, even in production buildup tests

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.

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.

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Effective well control with unsurpassed reliability and interventionless actuation.

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Product Sheet SFIV-II Surface-Controlled Bidirectional Isolation Valve

The SFIV-II surface-controlled bidirectional isolation valve protects formations from damage due to fluid loss during completions and workovers and serves as a reliable barrier to isolate fluids between the reservoir and surface, maintaining its pressure integrity through multiple operating cycles.