While drilling, a drilling team must be carefully check for well control indicators and if the positive kick indicator(s) indicated, crew must instantly know how to shut in the well in correct manner. The steps below, called “3S” shut-in procedures, demonstrate how to properly shut the well in while drilling.
Drilling shut in procedures (3S) – HARD SHUT IN PROCEDURE–
1. Space Out – Stop drilling, pick up drilling sting off bottom and space out to ensure that tool joint is not located at BOP elements.
2. Shut Down – Stop mud pumps
3. Shut In – Close an annular preventer or an uppermost pipe rams. Use trip tank to verify that the flow is totally stopped and the well is completely shut in. Then inform supervisors as drilling representative, tool pusher, OIM.
Reference book: Well Control Books