2002 Replacement Parts Catalog

D and DL Annular Blowout 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, interlocking 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.
• Available in dual configuration in certain sizes.
• 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.
• All Cameron DL BOPs are manufactured to comply with NACE specification MR-01-75 for H 2 S
service.
• 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 well bore. 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 with high-performance CAMULAR TM annular packing
subassemblies.
The Cameron DL BOP is available in sizes from 7-1/16” to 21-1/4” and in working pressures from 2000 to
20,000 psi.
TC1001 125 © 2002 Cooper Cameron, Cameron Division