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
Diverter Control Unit Options
Diverter Control Unit Features
|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)
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