WCE - Well Control Equipment

(Last updated: 05/27/2021)
WCE Notifications Submitted by Month
Note(s):
  • The initial Well Control Rule took effect on July 28, 2016. For more details, see BSEE’s Well Control Rule.
  • Date refers to submission date.
Summary Statistics of Reported Events

Note(s):
  • Date refers to event date.
  • On-time reporting is the percentage of reports received within 30 days of the event date.
Reported Root Causes
Note(s):
  • Date refers to event date.
  • The WCE notification form allows for only one root cause of an event.
  • Non-rig events excluded.
Type of Failure Reported
Note(s):
  • Date refers to event date.
  • Non-rig events excluded.
Reported Detection Methods


Note(s):
  • Date refers to event date.
  • Non-rig events excluded.
Root Causes of Events on the BOP Stack (01/2020 - 03/2021)

Note(s):
  • Date refers to event date.
  • Non-rig events excluded.
Key:
BOP: blowout preventer  
Root Causes of Events on the Choke Manifold System (01/2020 - 03/2021)
Note(s):
  • Date refers to event date.
  • Non-rig events excluded.
Root Causes of Events on the BOP Controls Secondary ROV Acoustic (01/2020 - 03/2021)
Note(s):
  • Date refers to event date.
  • Non-rig events excluded.
Key:
BOP: blowout preventer   ROV: remotely operated vehicle   SPM: sub-plate mounted valve  
Root Causes of Events on the Diverter System (01/2020 - 03/2021)


Note(s):
  • Date refers to event date.
  • Non-rig events excluded.
Root Causes of Events on the BOP Controls Emergency Automated Functions (01/2020 - 03/2021)
Note(s):
  • Date refers to event date.
  • Non-rig events excluded.
Key:
BOP: blowout preventer   EDS: emergency disconnect sequence  
EHBS: emergency hydraulic back-up system   SPM: sub-plate mounted valve  
Root Causes of Events on the BOP Controls (01/2020 - 03/2021)
Note(s):
  • Date refers to event date.
  • Non-rig events excluded.
Key:
BOP: blowout preventer   DRG: pilot operated, pressure regulating   HPU: hydraulic power unit   MUX: multiplex  
PBOF: pressure balanced, oil-filled   SPM: sub-plate mounted valve   UPS: uninterruptible power supply  
Root Causes of Events on the Auxiliary Equipment (01/2020 - 03/2021)
Note(s):
  • Date refers to event date.
  • Non-rig events excluded.
Root Causes of Events on the Riser System (01/2020 - 03/2021)
Note(s):
  • Date refers to event date.
  • Non-rig events excluded.