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Unformatted text preview: ring a well control operation when: (a) the gas flow rate is too high for the mud gas separator; (b) hydrates are forming in the gas vent line from the mud gas separator; (c) the gas is found to contain hydrogen sulfide; or (d) the mud system is overloaded. 271 BP’s well control manual states that the mud gas separator should be lined up at all times when a kick is being displaced, but there is a limit to the volume of gas that each mud gas separator can safely handle. 272 Transocean’s well control handbook indicates that if gas has migrated or has been circulated above the BOP stack before the well is shut in, the choke manifold and mud gas separator may no longer be available to control the flow rates when the gas in the riser reaches the surface. 273 Both companies recommend using the diverter lines when flow rates are too high for the mud gas separator. Special precautions and procedures are necessary to avoid the effects of the rapid expansion of gas in the riser, particularly in deepwater operations. Ac...
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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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