- WOM’s Annular BOP has a conical bowl designed piston with a length-to-diameter ratio approaching 1 which eliminates tendencies to cock and bend during operations with off-center pipe or unevenly distributed accumulations of sand, cuttings, or other elements.Only Two Moving Parts (piston and packing unit) on the Annular BOP mean few areas are subject to wear. The BOP is safer and more efficient, requiring less maintenance and less downtime.
- The latched lid design offers fast and easy access to the packing unit and wear seals. Conical Bowl Design of the Piston provides a simple and efficient method of closing the packing unit. With the piston serving as a sealing surface against the rubber packing unit, there is no metal-to-metal wear on the sealing surface and thus longer life results.
- Field Replaceable Wear Plate in the BOP Lid serves as an upper non-sealing wear surface for the movement of the packing unit, making field repair fast and economical.
- Maximum Packing Unit Life is possible with the provision for measuring piston stroke. This measurement indicates remaining packing unit life without disassembly and ensures the longest and safest use of the packing unit. Three Choices of Packing Unit Rubber Compounds permit more flexible applications.
- The Packing Unit’s back to front feedable rubber maintains closure on the BOP. Large Pressure Energized Seals are used for dynamically sealing piston chambers to provide safe operation, long seal life, and less maintenance.
Specification and Features
- Intuitive Design: WOM’s Annular BOP has a conical bowl designed piston with a length-to-diameter ratio approaching 1 which eliminates tendencies to cock and bend during operations with off-center pipe or unevenly distributed accumulations of sand, cuttings, or other elements
- Tested Reliability: The piston and packing unit are the only moving parts, ensuring minimal wear. This design enhances the ability of the packing unit to reopen to full bore position. When engaged, the pipe may rotate and tool joints stripped without breaking the seal. When an annular seal is achieved, well pressure reinforces the seal
- Hassle-Free Maintenance: Field-replaceable wear plate in the BOP head serves as an upper non-sealing wear surface for the movement of the packing unit, making field repair fast and economical. A piston stroke measurement indicator indicates remaining packing unit life without need for dis-assembly and ensures the longest and safest use of the packing unit.
Applications
WOM’s Annular BOP is suitable for onshore and offshore applications.
- Available in sizes ranging from 7 1/16” through 21 ¼” and pressure ranging from 2K through 10K
- Optional packing unit rubber compounds permit more flexible application
