ConcentricBore™

Dril-Quip’s ConcentricBore Production System is a time-saving, economical alternative to traditional completion system designs. By placing the production bore on the centerline, more downhole functions can be incorporated. The ConcentricBore Subsea Tree and tubing hanger design combines all of the serviceable features of a DualBore production system with the economic advantage of a simpler tubing hanger and tree design. Dril-Quip’s ConcentricBore Subsea Tree includes Dril-Quip’s field-proven tree connector, gate valve products and subsea control system.

ConcentricBore Subsea Tree

The ConcentricBore Production System provides the following benefits:

  • Can be run on tubing, drill pipe or workover riser
  • Can be run on a tree running tool with shear valve capabilities or Lower Riser Package
  • The ConcentricBore tree body incorporates integral production master and production swab valves, and an annulus master valve; shear cable valves available upon request
  • The ConcentricBore tree body can incorporate a production wing valve
  • Available with customer-specified retrievable flow control package
  • Available with optional protective cover
  • Standard API/ISO ROV interfaces ensure installation and maintenance accessibility
  • Field-proven technology

These unique features of the ConcentricBore Tree enable operators to save time and money:

  • Workover riser system and surface tree are simpler and less expensive than systems for traditional dual bore trees
  • Can be run on completion/work-over riser, tubing or drill pipe and an umbilical
  • The ConcentricBore Tree and Tree Cap Running and Retrieving Tool replaces on Jack-Up applications; EDP and LRP are available for subsea applications
  • The ConcentricBore Tree body incorporates integral production master and production swab valves, and an annulus master valve; wire-shear cable valves available upon request
  • Available with Integral wing valve in the master valve block

The ConcentricBore Tubing Hanger System provides the following benefits:

  • Production annulus access through tubing hanger annulus valve
  • The ConcentricBore Tubing Hanger allows downhole safety valve control, injection line connections, and downhole temperature and pressure monitoring
  • The tubing hanger is available for H2S and severe service
  • Large tubing sizes can be accommodated with annulus access

Contact your Dril-Quip representative for more information.