Cameron introduces new, high-availability BOP control system
HOUSTON -- Cameron has introduced the Mark IV control system, featuring a redundant, three-Point of Distribution (POD) design, as an option for its subsea BOPs.
Current subsea BOP control systems use a two-POD design, which provides a redundant spare. If the primary POD becomes unavailable, drillers can switch to the second POD to control their BOPs and seal the well, before bringing the BOP stack to the surface for repair of the non-working POD.
Cameron introduced the first multiplex BOP control system for subsea drilling, and has developed a patent-pending, three-POD stack design, which will provide drillers with additional operational reliability through redundancy. Adding a third POD can improve the subsea control system’s availability to as much as 98%, and reduce the likelihood of a POD-related stack pull by up to 73%. Actual system availability will vary with conditions, the company notes.
In addition to redundancy, the design of the POD for the new control system increases reliability through the POD design. Each POD has been designed to offer increased functionality in a smaller, lighter package. The simpler design can reduce leak paths by utilizing 50% less tubing compared to Cameron’s previous two-POD design. Additionally, the number of available functions has increased 33% to accommodate newer, eight-cavity stacks. POD size was reduced 26%, and weight is one-third less than competitors’ control PODs.