Drill String BOP Valves

Drill String BOP Valves

Components for shutting in the drillpipe internally are a basic part of well control equipment. All drill string BOP valves must have a pressure rating equal to, or greater than, the BOP stack.

The following drill string BOP valves shall be available on the drill floor at all times:

  • A full bore Kelly Cock shall be installed at the base of the kelly or top drive.
  • A ball type stabbing valve, with connections or a cross-over to suit the workstring together with an operating handle for the . . .

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