This useful SafeOCS report summarizes and itemizes well control equipment failures associated with well operations on the Gulf of Mexico OCS in 2020. Of particular note was the absence of any loss of containment (leak of wellbore fluids) events in 2020 or the prior two years.
Unfortunately, there appear to be significant reporting gaps despite the fact that reporting of these data is required by regulation (30 CFR 250.730(c)). The reporting issues are particularly serious for surface systems (surface BOP and associated equipment). Per SafeOCS, surface rig reports were received from less than 50% of active operators and rigs. Reporting for subsea systems (subsea BOP and associated equipment) was much better with 85% of the active rigs represented.
Of further concern with regard to the reporting of surface equipment events, the data indicate only 5.3 events per 1000 hours for surface systems vs. 71.5 for subsea systems. While subsea systems are more complex, the cost of pulling and repairing subsea equipment dictates newer, better maintained equipment. As a result, surface BOPs have historically had higher failure rates than subsea BOPs. The data below are from a presentation to MMS approximately 15 years ago. Both the Sintef and OOC data show higher failure rates for surface BOPs.
The SafeOCS team did a very good job of analyzing the reports and presenting the data. However, the reporting issues need to be investigated and resolved to get maximum value from this very important work.
Bud's Offshore Energy (BOE) 