Pressure relief system for live well snubbing

Details Pressure relief system for live well snubbing Pressure relief system for live well snubbing

E - Fixed Constructions

21

B

E21B 19/08 (2006.01) E21B 33/06 (2006.01)

Patent

CA 2312069

A pressure relief system for use in live well snubbing has blow-out preventers (BOPs) mounted one above the other in a BOP stack on a live well bore and spools installed between successive ones of the blow-out preventers, the spools and the blow-out preventers being arranged along a passage communicating with the well bore and serving to receive piping therethrough during snubbing operations. Supply ducts communicating with the passage between successive ones of the blow-out preventers are provided with gas pressure regulators.

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