Soft Shut In Procedure On Fixed & Floating Rigs
Soft shut in Drilling Definition & Lineup

Soft shut-in is one of the procedures of closing wells after it gains a kick to its wellbore. For a soft close-in, a choke is left open at all times other than during a well control operation. The choke line valves are aligned such that a flow path is open through the choking system, with the exception of one choke line valve located near the blowout preventer.
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