Insert-Retrievable Subsea Chokes | ProductsSLB

Insert-Retrievable Choke Valves

20-year service life

CC40SR clamp choke with CLRT running tool funnel.

Cameron has several insert retrievable subsea choke retention designs, including the clamp-style choke. The simple clamp mechanism for latching the insert to the choke body is a robust, ROV- and diver-friendly system.

  • A remotely operated tool lowers the insert with its clamp assembly into the choke body.
  • Guide pins align the insert, and hydraulic and electrical connectors automatically mate as the insert is soft landed.
  • Finally, the ROV operates a single threaded shaft to close the clamp segments. Our large-bore CC80SR subsea insert retrievable choke utilizes the OneSubsea CVC flowline connector.

We have developed configurations to allow retrieval of the clamp style chokes by the Cameron clamp running tool (CLRT), a third-party deepwater liftline running tool (DLRT), or multipurpose running tool (MPRT). The CC80SR CVC collet-type large-bore insert-retrievable choke uses the standard OneSubsea CVC running tool.

Specifications  
Pressure ratings
15,000 psi
Water depths
9,800 ft [3,000 m]
Temperatures range
–50 to 350 degF [–46 to 177 degC]
Trim sizes
2–8 in
Max. Cv
1,000
Actuation
Cameron SLCA hydraulic stepping linear choke actuator or Aqua-Torq hydraulic stepping choke actuator (3,000- or 5,000-psi supply)
Position feedback
Linear variable differential transformer analog (4 to 20 mA) or digital CANbus
Service life
20 years (excluding wearing trim elements)
Certification
API Specs 6A and 17D, ISO 10423 and 13628-4, NACE MR0175, NORSOK
Model
Description
Nominal Size, in
Max. Working Pressure, psi
Max. Cv
Flow Curve Type
CC20SR
Gas lift
2
10,000
14
Plug and cage, equal percentage
8
CC30SR Gas lift or production
3
10,000
46
External sleeve, linear
CC40SR
Production
4
15,000  288
Plug and cage, linear
10,000
241
Plug and cage, equal percentage
200
Reverse-flow water injection (DBA multistage anticavitation trim) 206
Single stage
130
Two stage
94
Three stage
CC50SR
Production
5
10,000
500
Plug and cage, linear
345
Plug and cage, equal percentage
CC80SR
Large-bore gas production
8
7,500 1,000
Plug and cage, linear
757
Plug and cage, equal percentage

Nominal size refers to the seat nominal diameter, not the inlet or outlet end connection size.

Reduced-capacity and custom trims available.

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