Insert-Retrievable Chokes
20-year service life
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 vertical flowline connector system.
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 system 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.
