Flowline Connection Systems Brochure

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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.







DQ-VC with Integral Hydraulics:

  • 5,000 PSI pressure rating
  • Metal-to-metal sealing
  • 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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