What is the recommended action to minimize connection gas impact during drilling?

Minimizing the time during connection with pumps off is a crucial action to mitigate the impact of connection gas during drilling operations. During the connection phase, when the pumps are off, there is a risk of gas migrating into the wellbore because the pressure is reduced, potentially leading to a dangerous situation known as a kick. By reducing the duration of this connection period, the opportunity for gas to enter the well is decreased.

This practice is part of a comprehensive strategy in well control, emphasizing the importance of maintaining pressure integrity while connections are being made. Keeping the time without active circulation to a minimum limits the exposure to potential influx.

In comparison, increasing drilling fluid density can help in certain scenarios but may not be practical or effective during every connection, as the fluid density must be balanced with various drilling conditions. Continuous circulation without interruptions is also beneficial but may not always be possible depending on the specific drilling operations and equipment involved. Switching to a lighter drilling fluid can actually increase the risk of gas influx because it makes it easier for gas to displace the fluid in the wellbore during periods of reduced pressure.