A university‐industry consortium has been studying alternative well control procedures for kicks taken during managed pressure drilling (MPD) operations using the constant bottom hole pressure (CBHP) method. This paper explains and evaluates the specific shut in and pump start up procedures resulting from that study.

Shutting in the blowout preventer (BOP) is the standard reaction to a kick taken during conventional drilling. Shut in has been concluded to be the appropriate response for kicks during MPD in some circumstances. Two different shut in procedures are applicable: a simple shut in and a MPD pump shut down with a "choked flow check." Both require a pump start up schedule to begin circulating out a kick.

A simple procedure for defining a pump start up schedule and its basis are described. Shut in and application of the pump start up schedule for circulating out a kick were simulated for a wide range of well and kick conditions. This method stopped formation flow and kept bottom hole pressure relatively constant during pump start up and kick circulation for the full range of scenarios studied. The realism of simulation results was confirmed by comparison to a full scale gas kick experiment.

A manual MPD pump shut down with a "choked flow check" was also performed in both the simulator and the experimental well. The procedure, which allows a flow check without letting bottomhole pressure drop significantly below the intended pressure, is explained. It was shown to be effective for detecting or confirming low rate kicks that cannot be detected conclusively during circulation.

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