At 6,650 ft TVD a permeable gas reservoir is drilled that could have a pore pressure...
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At 6,650 ft TVD a permeable gas reservoir is drilled that could have a pore pressure gradient as high as 12.0 ppg. a) What mud pressure (in psi) and mud weight (in ppg) should be used if ChevBob wants to maintain a 250 psi overbalance pressure above the gas reservoir pressure? b) ChevBob would like you to design the well for "full evacuation to gas". This means that the well system and BOPS will need to maintain well integrity even when a gas kick displaces all the mud out of the well and fills the entire annulus. Assuming the average density of the gas to be 0.08 psi/ft, what should the minimum pressure rating (rounded to the nearest 100 psi) of the surface BOP's be in order to contain such a "full evacuation" kick during well shut-in (i.e. BOPS are closed on surface to contain the gas, thus preventing a blow-out on surface)? At 6,650 ft TVD a permeable gas reservoir is drilled that could have a pore pressure gradient as high as 12.0 ppg. a) What mud pressure (in psi) and mud weight (in ppg) should be used if ChevBob wants to maintain a 250 psi overbalance pressure above the gas reservoir pressure? b) ChevBob would like you to design the well for "full evacuation to gas". This means that the well system and BOPS will need to maintain well integrity even when a gas kick displaces all the mud out of the well and fills the entire annulus. Assuming the average density of the gas to be 0.08 psi/ft, what should the minimum pressure rating (rounded to the nearest 100 psi) of the surface BOP's be in order to contain such a "full evacuation" kick during well shut-in (i.e. BOPS are closed on surface to contain the gas, thus preventing a blow-out on surface)?
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Operations Management Creating Value Along the Supply Chain
ISBN: 978-0470525906
7th Edition
Authors: Roberta S. Russell, Bernard W. Taylor
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