Hydraulically operated, compact, shear and seal valve designed with high cutting performance and reliable post-cut sealing.
7-3/8” – 10K Compact Cutting Device (CCD) designed with opposing horizontal hydraulically actuated gate valves made to shear coiled tubing, drill pipe, and wire line of a given specification in the wellbore and seal from below.
A seal is made after the shearing, isolating the pressure/fluids beneath the CCD. It is used in offshore and/or high-pressure applications where cutting of the well string is required without leaving a snag. The device is powered by accumulators and can be overridden via ROV hot stab in either direction.
The CCD is considered a safety head that has a relatively small vertical distance between top and bottom flanges. With a reduced package, the CCD can be easily transported and installed using cheaper methods, reducing overall time and costs for subsea projects.
The gate valves are fail-as-is. The external position indicator will show where the gate valve positions are at all times. A locking mechanism prevents the gates from creeping back after they have closed. In case of a failure, an override tool may be used to open or close the CCD. This override tool is ROV actuated.
- 7-3/8” Bore, 10 KSI parallel cutting and sealing gate valve design.
- Unidirectional coiled tubing cutting valve with recirculation capability.
- Demountable actuators to facilitate in-situ maintenance.
- Compact Design
- Separate cutting and sealing components in a single device.
- 3 ½” S135 Drill Pipe – Clean Cut
|Nominal Bore Diameter||Ø7 3/8”|
|Design Wellbore Pressure|| Working: 10,000 psi.|
Test: 15,000 psi.
|Design Standard||API 17G & NORSOK D-002|
|Temperature Class (Design)||P+U (-20°F to 250°F)|
|Service||H2S -IN accordance with NACE MR0175|
|Drift Dia.||7.345 +.027/-.000|
|Design Life||Min. 20 years|
|Product Specification Level||PSL-3G|
|Shearing Class||Wireline/Coiled Tubing|
|Maximum Hydraulic Pressure||5,000 psi|
|Cylinder Volume (Total, Approx.)||Open: 5.45 US gal (20.63 liters) |
Secondary Open: 5.45 US gal (20.63 liters)
Close: 5.77 US gal (21.86 liters)
Secondary Close: 5.77 US gal (21.86 liters)
|Locking Piston Volumes||Lock: 0.091 US gal (0.348 liters) Unlock: 0.019 US gal (0.072 liters)|
|Control Fluid Type||HW443 (or) Water based Glycol|
|Cutting Capabilities||Performed 116 ksi Yield, 2.50” Solid bar|
|Design Validation Level||API-17G (3rd Edition – Ballot)|
|Certification||DNV-OS-E101 Cat. 1|