06601650 is referenced by 82 patents.

The present invention discloses apparatus and methods for replacing a BOP with a gate valve to thereby save space, initial costs, and maintenance costs that is especially beneficial for use in offshore subsea riser packages. The method provides a gate valve capable of reliably cutting tubing utilizing a cutting edge with an inclined surface that wedges the cut portion of the tubing out of the gave valve body. A method and apparatus is provided for determining the actuator force needed to cut the particular size tubing.

Title
Method and apparatus for replacing BOP with gate valve
Application Number
9/992220
Publication Number
6601650 (B2)
Application Date
November 6, 2001
Publication Date
August 5, 2003
Inventor
Alagarsamy Sundararajan
Katy
TX, US
Agent
Kenneth L Nash
US
Assignee
Worldwide Oilfield Machine
TX, US
IPC
E21B 29/00
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