Key words:

  • Gulf of Mexico
  • Subsea
  • Blowout Preventer
  • Reliability
  • Well Kick

Background:

2010 blowout and subsequent spill from the Transocean Deepwater Horizon Mobile Offshore Drilling Unit(MODU) in the US Gulf of Mexico Outer Continental Shelf (OCS))

Deepwater Blowout Preventer (BOP) Reliability & Well Kicks

Since 1983, Sintef & Exprosoft have documented results from a number of detailed reliability studies of Blowout Preventer Systems (BOP). The objectives of this study was to:

  • Ensure that the deepwater drilling business keep up the focus on the importance of BOP reliability and kick prevention
  • Establish an overview of BOP stack layout for the various rigs, and further to highlight differences.
  • Establish an overview of the various emergency control systems
  • Present the deepwater BOP reliability time dependent trends.
  • Highlight the impact of new equipment on the BOP reliability

«The quality of work performed by contractor was very high, illustrating strong knowledge of the subject matter, through analysis , and clear reporting of findings and result»

BSEE, 2012

Project Outcome:

 
  • Updated reliability overview of deepwater subsea BOPs world wide.
  • Quantification of the deepwater well kick frequencies
  • Important parameters contributing to the deepwater kick frequency

Estimated value:

 

Defined improvement potential of 4% drilling downtime due to BOP failure