Dril-Quip offers a variety of field-proven, reliable and cost-effective horizontal and vertical flowline connection systems. This includes integral or non-integral, hydraulic or mechanical styles. Dril-Quip’s Flowline Connection Systems are engineered to meet or exceed all industry standards and project specifications. All connectors can be designed to be “piggable.” They also have secondary mechanical un-lock provisions and mate with flexible or rigid pipe connections.
Hydraulic unlock, lock, seal release and seal test functions
Secondary mechanical unlock provided
The DQ-VC is available as a piggable connector with up to 12 hydraulic couplers, a piggable loop with metal-sealing swivel arms and pigging isolation valve provided.
DQ-VC With Non-Integral Hydraulics:
To minimize connector cost, the DQ-VC can be configured with all hydraulic functions in the DQ-VC running tool so that no hydraulics are left on the ocean floor. With this design, multiple pipe sizes are provided using the same connector and running tool. The DQ-VC with non-integral hydraulics is rated to 10,000 feet of water depth.
Major System Components
Vertical flowline running tool (two required)
Jumper and collet connectors
Receiver structure (male hubs located at tree, manifold, PLEM and PLET)
Spreader bar and rigging
Features of the DQ-VC Running Tool
Hydraulic running tool
ROV operated; no umbilical required
Mechanical override of all locking functions
Running Tool is retrieved after connectors are locked and gasket is tested
Control land cylinders draw hub faces together after running tool has initially landed out on receiver
Lock cylinders provide force required to lock and preload connection
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