Diverter Control Unit

The Diverter Control Unit is a free standing, seam-welded, skid unit that provides an easy access point to function the Diverter within an Oceaneering MUX or conventional control system.

It is designed to preclude the Diverter from closing-in the well. This requires opening one or more vent lines, as well as, closing normally open mud system valves (if applicable) prior to closing the diverter annular sealing device.

Operation to open the vent valve and close the mud line (return) valve shall occur before the Diverter Packer is closed.

The design of the system software is to prohibit closing the diverter packer unless a vent line has been opened. If the diverter in use is equipped with an insert packer and/or pressure energized flow line seals, the control system sequencing circuitry shall additionally prevent closing the diverter packer if the insert packer is unlocked or if the flow line seals and/or overshot packer are not energized.

Where applicable, the control system shall be capable of switching the diverted flow from one vent line to the other (e.g., port to starboard) while the diverter packer is closed without shutting in the well.



Diverter Control Unit Functions

  • Locally controls the Diverter from the skid mounted Gauge / Valve Panel or, remotely, through the optional Driller’s Control Panel (DCP), Toolpusher’s Control Panel (TCP), or Master Control Station (MCS)
  • Provides software logic to prevent closing in the well without having one or more vent lines open
  • Interfaces and provides readbacks within the Master Control Unit in a conventional control system or within the Master Control Station within a MUX control system


Diverter Control Unit Options

  • Custom designs available to suit your diverter package and customer needs
  • Compatible with Oceaneering’s MUX or Conventional BOP Control System
  • DNV and ABS certification available


Diverter Control Unit Features

  • Self contained, fully seam welded skid with integrated valved drip pan and accessible component design makes installation and maintenance fast and easy
  • Operates manually via manipulator valves at local Valve / Gauge Panel or remotely with software based automatic sequencing for effortless control and operation
  • Manufactured, in-house, at our Houston, Texas Facility with the highest quality contemporary stainless steel piping and controls that resist corrosion and provide robust performance
  • Our systems meet and/or exceed API 16D requirements. ABS and DNV Certification is available, upon request
  • 7 days-a-week replacement parts customer support for “Rig-Down” situations


Technical Specifications

Overall Dimensions (typical): (L) 96 in x (W) 76 in x (H) 88.5 in (shackles removed)
Weight (dry): 10,000 lbs.
Weight (with fluid): 10,500 lbs.
Temperature Range: -10oF to +140oF
Required Main Service Voltage: 120 VAC, Single Phase, 5 Amp (from PDU)
Required Pneumatic Supply: 20 scfm @ 90 to 150 psi (from Rig Air)
Classification: Class 1 Div 2, Group C&D (with optional purge unit)
Hydraulic Pressure Rating: 5,000 psi (select circuits, provided by HPU)



Major System Components
(Vary per Customer Requirements and Options)

  • Valve Diverter Interface Panel
  • Operator Valve / Gauge Panel
  • Pneumatically Adjustable Regulators
  • Instrumentation Enclosure Panel
  • Hydraulic, Bladder Type Accumulators
  • Pneumatic Function Assemblies
  • Diverter Control Interface Panel
  • Pneumatic Volume Support Tanks


We can schedule a meeting, presentation, facility tour or lunch-and-learn to show you what our BOP Control Systems and surface equipment can do for you, your customers, and your drilling rig.

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