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Unformatted text preview: and clean up activities. 356 144 Of particular note were the 2004 West Engineering Services studies Review of Shear Ram Capabilities and Evaluation of Shear Ram Capabilities (TAR studies 455 and 463). 360 The main goal of these studies was to answer the following question: can a rig’s BOP equipment shear the pipe to be used in a given drilling program, at the most demanding condition to be expected, and, if so, at what pressure? Before answering this question, one of the studies noted that “[s]hear rams may be a drilling operation’s last line of defense for safety and environmental protection.” In arriving at several conclusions and recommendations, the report described a failure rate of 7.5% where the rams tested failed to shear pipe while working in a maximum closing force pressure of 3,000 pounds per square inch. In a 2003 West Engineering Services study funded by MMS, the study acknowledged that shear ram blocks were not designed to close and seal under high rate conditions if closure rates were slow. The study also noted that API Specifi...
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This note was uploaded on 01/18/2014 for the course BEPP 305 taught by Professor Nini during the Fall '11 term at UPenn.

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