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The flow only happens if void pressure is higher than surface tank pressure (usually 1 atm ).
The Bleed-off procedure is widely used to check for Sustainable Annulus Pressure (SAP) and to derisk production operations.
See Also
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Petroleum Industry / Upstream / Petroleum Well
[ Oil Producer ] [ Gas Producer ] [ Gas Injector ] [ Water Producer ] [ Water Injector ] [ Observation Well ]
[ Well Drilling ] [ Well completion ][ Sustainable Annulus Pressure (SAP) ]