WCE - Well Control Equipment
(Publication Date: )WCE Notifications Submitted by Month
Note(s):
- All events shown occurred in the Gulf of America (GOA) OCS.
- 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):
- All events shown occurred in the Gulf of America (GOA) OCS.
- 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):
- All events shown occurred in the Gulf of America (GOA) OCS.
- 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):
- All events shown occurred in the Gulf of America (GOA) OCS.
- Date refers to event date.
- Non-rig events excluded.
- Events involving leakage of hydraulic control fluids are classified in the Control Fluid Leak, Internal Leak, and External Leak categories. Control fluid leaks of certain components can be considered as both internal and external leaks (i.e., the leak occurs both within and outside the component). To enable consistency in reporting, leaks from the following control system components are classified as control fluid leaks: ball valve, piloted operated check valve, ROV valve, electrically piloted directional control valve, hydraulically piloted directional control valve, quick dump valve, shuttle valve, regulator, and trigger valve.
Reported Detection Methods
Note(s):
- All events shown occurred in the Gulf of America (GOA) OCS.
- Date refers to event date.
- Non-rig events excluded.
- The Detection Method categories changed on January 1, 2025. Definitions are available in the User Guide for Reporting Well Control Equipment Failure.
Root Causes of Events on the BOP Stack System
Note(s):
- All events shown occurred in the Gulf of America (GOA) OCS.
- Date refers to event date.
- Non-rig events excluded.
Root Causes of Events on the Choke Manifold System
Note(s):
- All events shown occurred in the Gulf of America (GOA) OCS.
- Date refers to event date.
- Non-rig events excluded.
Root Causes of Events on the Diverter System
Note(s):
- All events shown occurred in the Gulf of America (GOA) OCS.
- Date refers to event date.
- Non-rig events excluded.
Root Causes of Events on the BOP Controls
Note(s):
- All events shown occurred in the Gulf of America (GOA) OCS.
- Date refers to event date.
- Non-rig events excluded.
Root Causes of Events on the BOP Secondary Controls
Note(s):
- All events shown occurred in the Gulf of America (GOA) OCS.
- Date refers to event date.
- Non-rig events excluded.
Root Causes of Events on the BOP Emergency Controls
Note(s):
- All events shown occurred in the Gulf of America (GOA) OCS.
- Date refers to event date.
- Non-rig events excluded.
Root Causes of Events on the Riser System
Note(s):
- All events shown occurred in the Gulf of America (GOA) OCS.
- Date refers to event date.
- Non-rig events excluded.