FMC Technologies' "F" series Subsea Chokes and Flow Modules are suitable for production, injection, gas lift and waterflood applications. They are designed for maximum reliabity and include "Best Practice" features that leverage FMC's field proven subsea experience and technology including: metal and elastomeric seals, mechanical clamp technology, fluid dynamics, and flow assurance .

Extensive qualification testing:

•  API 6A/ 17D (ISO 10423/ ISO 13628-4) PR2, Annex F tested
•   Extended FMC endurance tested at 300oF
•   Independent Cv test to ISA 75.02
•   Independent erosion test
•   Independent API 6A Annex I slurry test
•   Hyperbaric test to 10,000 ft (3,048 m) water depth
•   Endurance tested at 1M pulses/steps
•   Subsea field tested under severe operating conditions

Non-Retrievable Subsea Choke

Features a multi-hole tungsten carbide plug and cage design with a steel protective jacket to prevent impact damage.

The plug is fully guided, pressure balanced and rigidly attached to the stem to eliminate flow induced vibration.

Features and Benefits

• Large gallery to mitigate erosion and extend choke life
• Fully supported cage is capable of reverse flow at maximum working pressure
• Body outlet designed for complete wear protection

Insert Retrievable Subsea Choke

Features a FMC field proven "KL" two piece hinged clamp connector with a horizontal Class IV ROV interface.

Features and Benefits

• Funnel type guide structure to interface with choke running tool with ROV grab bar and electrical parking receptacle
• Choke body with two stab type wet-mate hydraulic connectors
• Hot stab test port between primary and secondary body to insert seals
• Multi-hole tungsten carbide plug and cage insert with steel protective jacket to prevent debris impact damage

Retrievable Choke and Flow Module

Provides easy retrieval and deployment on a down line with ROV assistance, no running tool is required.

Features and Benefits

• Improved reliability and availability with simplified interfaces
• Small compact footprint allows for straightforward subsea retrieval and deployment
• Increased visibility for guidance and connection
• Choke insert and body are recovered as an assembly, ideal for high erosion service
• Utilizes a cost effective bolted bonnet design
• Improved thermal performance due to simplified interface and ease of adding insulation onto entire choke body and actuator
• Upgradeable by adding retrievable flow meters and sensors
• Reconfiguration is contained in the flow module permitting standardization of core tree components
• Sensitive components can be retrieved and deployed without performing major workovers
• Allows for easy conversion from production tree to water injection service and vice versa

Hydraulic Stepping Actuator

Designed as a "fail as is" with a Class IV ROV manual override, the actuator provides remote position feedback via a direct stem mounted LVDT.

Features and Benefits

• Two double acting spring return pistons
• Crossover tubing to guarantee operation in all hydraulic "back pressure" conditions
• No net actuator housing volume change during the "stepping" mode
• Large top mounted visual indicator
• Compensation viai an enclosed diaphraghm

Subsea Choke Running Tool

The tool is wireline deployed with ROV assistance for insert retrival and deployment.

Features and Benefits

• Three passive pistons provide soft landing
• Latching and unlatching the tool is purely mechanical
• Tool completely extends to protect the choke insert on retrieval and deployment
• Running tool provides a 45^o rough alignment capture angle
• Hydraulic hot stab provided to assist in choke insert removel