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SINTEF REPORT
TITLE

SINTEF Industrial Management Safety and Reliability
Address: Location: Telephone: Fax: N-7465 Trondheim, NORWAY Strindveien 4 +47 73 59 27 56 +47 73 59 28 96

Reliabilityof Subsea BOP Systems for Deepwater Application, Phase II DW Unrestricted version

AUTHOR(S)

Enterprise No.: NO 948 007 029 MVA

Per Holand
CLIENT(S)

Minerals Management Service (MMS)REPORT NO. CLASSIFICATION CLIENTS REF.

STF38 A99426
CLASS. THIS PAGE

Unrestricted
ISBN

William Hauser
PROJECT NO. NO. OF PAGES/APPENDICES

Unrestricted
ELECTRONIC FILE CODE82-14-01661-4

384240
PROJECT MANAGER (NAME, SIGN.) CHECKED BY (NAME, SIGN.)

118/1 Marvin Rausand

\\TEKNONT1\TL_PROS\3840\PRO\384240\Rapport\final UNRESTRICTED REPORT.doc FILE CODE DATE

Per HolandAPPROVED BY (NAME, POSITION, SIGN.)

1999-11-07
ABSTRACT

Lars Bodsberg, Research Director

A reliability study of subsea BOPs has been performed. The study is based on information from 83wells drilled in water depths ranging from 400 meters (1312 feet) to more than 2000 meters (6562 feet) in the US GoM OCS. These wells have been drilled with 26 different rigs in the years 1997 and 1998.The main information source from the study has been the daily drilling reports. The collected data have been fed into a tailor made database system. Detailed failure statistics for the various BOPsystems are presented. Both the downtime aspect and the safety aspect of the failures have been evaluated. Further, BOP test time consumption has been investigated. The results from the study havebeen compared with the results from another deepwater BOP reliability study carried out for wells drilled in other parts of the world.

KEYWORDS
GROUP 1 GROUP 2 SELECTED BY AUTHOR

ENGLISHNORWEGIAN

Reliability Offshore Blowout Preventer Risk

Pålitelighet Offshore Utblåsningssikring Risiko

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