Annular Preventers

In the unique design of the Cameron DL annular BOP, closing pressure forces the operating piston and pusher plate upward to displace the solid elastomer donut and force the packer to close inward. As the packer closes, steel reinforcing inserts rotate inward to form a continuous support ring of steel at the top and bottom of the packer. The inserts remain in contact with each other whether the packer is open, closed on pipe or closed on open hole. Other features of the DL BOP include:

  • The Cameron DL BOP is shorter in height than comparable annular preventers. A quick-release top with a one-piece split lock ring permits quick packer change out with no loose parts involved. The design also provides visual indication of whether the top is locked or unlocked.
  • The DL BOP is designed to simplify field maintenance. Components subject to wear are field-replaceable and the entire operating system may be removed in the field for immediate change-out without removing the BOP from the stack.
  • Twin seals separated by a vented chamber positively isolate the BOP operating system from well bore pressure. High strength polymer bearing rings prevent metal-to-metal contact and reduce wear between all moving parts of the operating systems.
  • Packers for DL BOPs have the capacity to strip pipe as well as close and seal on almost any size or shape object that will fit into the wellbore. These packers will also close and seal on open hole. Some annular packers can also be split for installation while pipe is in the hole. Popular sizes of the DL BOP are available
Cameron Annular
Figure 6.2.1 DL ANNULAR BLOWOUT PREVENTER

SECTION 6 : WELL CONTROL EQUIPMENT

Figure 6.2.2 CAMERON 20,000 PSI WP ANNULAR BLOWOUT PREVENTER SEALING ELEMENT

Figure 6.2.2 CAMERON 20,000 PSI WP ANNULAR BLOWOUT PREVENTER SEALING ELEMENT

Cameron AnnularAnular Hydril

Figure 6.2.3 HYDRIL "GK" ANNULAR

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