SS-15® and SS-20® BigBore™ IIe Subsea Wellhead System

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Dril-Quip’s BigBore IIe meets the demands of HPHT well environments. The BigBore IIe is fully verified and validation tested for structural capacity and high fatigue resistance.





The BigBore™ IIe is a fully qualified subsea wellhead system that has been extensively analyzed and validation tested to be suitable for high pressure, high temperature (HP/HT) service.

System Features:

  • Eliminates the need for extra drilling and production lockdown devices
  • Seal Assembly provides 2 million lbs. hanger lockdown capacity to resist thermal and pressure loads
  • Significant cost savings by reducing the number of trips
  • High load capacity meets requirements of next generation 20K drilling rigs and HPHT well designs
  • DXe™ top connection offers superior structural capacity and fatigue resistance
  • Tested and qualified to normal, extreme and survival loads
  • Full scale fatigue tested
  • Qualified to 20,000 psi WP and 35° - 350° F per API 6A PR2 Group 4, with additional dynamic seal endurance testing

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