The drilling rig in each region or company should have specific shut-in procedures for Drilling and Completions activities to which the rig or workover unit will be exposed.
Shut-in procedure subjects may include the following:
- Drilling (milling/circulating for cased hole)
- Tripping (with both drillpipe and drill collars across the BOP stack)
- Open hole (out of the hole) operations
- Wireline operations
- Running tubulars (casing/tubing)
For subsea stack operations, the operations folks should ensure that each rig has a specificc procedure for identifying and hadling gas in the riser and BOP.