Downhole Isolation Barrier Valves

Well barrier for isolating wellbore and reservoir fluids while minimizing risks

Contain fluids during completion and workover operations

Prevent formation damage and minimize workover costs with isolation valves that safeguard reservoirs by providing a reliable barrier within the completion string. Simultaneously minimize risks by isolating the formation and containing reservoir fluids, which increases efficiency by enabling batch drilling and completion operations.

Suit your application with a wide range of options

Choose the ideal isolation valves to suit your

environments, including deepwater and subsea
completion types, including single- or mutiple-zone completions and intelligent completions
applications, including fluid loss control, gravel and frac packing, well suspensions, ESP workovers, underbalanced perforating, and downhole lubricator valves.

Schlumberger Worker Inspection an Isolation Valve

1996

Industry's first barrier valve

>2,300

Isolation valves installed

Trigger Mechanisms
	Interventionless
	Mechanical	N₂	Control Line
FIV-II formation isolation valve	Y	Y
MFIV-II mechanically controlled isolation valve	Y
AFIV annulus-controlled shrouded isolation valve	Y	Y
SFIV-II surface-controlled bidirectional isolation valve			Y

Completion Types	FIV-II Valve	MFIV-II Valve	SFIV-II Valve	AFIV Valve
Completion Types Intelligent completions	FIV-II •	MFIV-II •	SFIV-II •	AFIV •
Completion Types Stand-alone screens	FIV-II •	MFIV-II •	SFIV-II •	AFIV
Completion Types Gravel pack or frac pack	FIV-II •	MFIV-II •	SFIV-II	AFIV
Completion Types Multizone gravel pack or frac pack	FIV-II •	MFIV-II •	SFIV-II	AFIV
Completion Types Well suspension	FIV-II •	MFIV-II •	SFIV-II •	AFIV •
Completion Types Lubrication	FIV-II •	MFIV-II •	SFIV-II •	AFIV
Completion Types ESP workovers	FIV-II	MFIV-II •	SFIV-II •	AFIV
Completion Types Underbalanced perforating	FIV-II •	MFIV-II •	SFIV-II •	AFIV
Completion Types Multilaterals	FIV-II •	MFIV-II •	SFIV-II	AFIV

API 19V and ISO 28781 Certifications

ISO 28781 and API Spec 19V are international standards that prescribe the requirements for subsurface barrier valves and related equipment for use in the petroleum and natural gas industries. Subsurface barrier valves provide a means of isolating the formation or creating a barrier in the tubular to facilitate the performance of well operations before production or injection starts. Barrier valves are also available for the postproduction or postinjection phase.

The standards define

functional characteristics
product material requirements
quality control, defined by quality grades Q1 and Q2
design criteria
design validation, defined by qualification levels V1, V2, and V3
design changes
documentation requirements—operations manuals and product identification.

Validation Grade	Test Medium	Flow Rate At
Validation Grade	Test Medium	Flow Rate At 200 psi Across Barrier	Flow Rate At 50% Rating	Flow Rate At 100% Rating
Validation Grade V1	Test Medium Liquid	Flow Rate At 10 mL/min	Flow Rate At 5 mL/min	Flow Rate At 5 mL/min
Validation Grade V1	Test Medium Gas	Flow Rate At 1 ft³/min	Flow Rate At 0.5 ft³/min	Flow Rate At 0.5 ft³/min
Validation Grade V2	Test Medium Liquid	Flow Rate At 30 mL/min	Flow Rate At 15 mL/min	Flow Rate At 15 mL/min
Validation Grade V2	Test Medium Gas	Flow Rate At, Flow Rate At, Flow Rate At No requirement
Validation Grade V3	Test Medium, Flow Rate At, Flow Rate At, Flow Rate At Supplier- or manufacturer-defined and successful field history of 20 similar valves

	Barrier from Above	Barrier from Below	Barrier from Above and Below
Preproduction and preinjection barrier valves	Barrier from Above Type A	Barrier from Below Type B	Barrier from Above and Below Type C
Postproduction and postinjection barrier valves	Barrier from Above Type AA	Barrier from Below Type BB	Barrier from Above and Below Type CC