SFIV-II Isolation Valve | Surface Control, Barrier Valve | Schlumberger

SFIV-II

Surface-controlled bidirectional isolation valve

Rated to 15,000 psi [103 MPa]
Rated to 300 degF [149 degC]
Validated to ISO 28781 and API Spec 19V V1 and Q1, CC barrier valve qualified

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.

SFIV-II surface-controlled bidirectional isolation valve

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.

SFIV-II surface-controlled bidirectional isolation valve
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