Hydril GX® Annular BOP

Expect More Closures, Stripping and Uptime

Drilling contractors have called the Hydril GX® "the best darn annular in the business" for one reason: exceptional uptime. Its single packing unit has provided continuous service for as long as a year, and it has continued to hold pressure after exposure to extreme temperatures and extensive stripping. In the field and in laboratory tests, GX units have:

  • Passed an ABS-witnessed, 10,000-psi API pressure test at 270 ° F.
  • Stripped more than 30,000 ft of 6-5/8" drill pipe with 8-1/4" tool joints.
  • Stripped 300,000 ft of 5" drill pipe with 6-3/8" tool joints.
  • Held pressure in the field after 328 closing cycles plus stripping.

Selected Engineering Data*

Bore Size (inches) Working Pressures (psi)
11   10,000 15,000
13-5/8 5,000 10,000 15,000
18-3/4   10,000  

* See brochure for additional data

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