CONTINUOUS MUD CIRCULATION DURING DRILLING OPERATIONS

摘要

Systems and methods for continuous mud circulation during a drilling operation. The method includes delivering a first flow of drilling mud from a mud supply, through a drill string, into a wellbore, and through a blowout preventer. The drill string is received through the blowout preventer. The method also includes delivering a second flow of drilling mud into the blowout preventer. The second flow is not delivered through the drill string. The method further includes stopping the first flow, and removing or adding a tubular to or from the drill string when the first flow is stopped and while continuing to deliver the second flow.

主权项

1. A method for continuous mud circulation during a drilling operation, comprising:
delivering a first flow of drilling mud from a mud supply, through a drill string, into a wellbore, and through a blowout preventer, wherein the drill string is received through the blowout preventer; delivering a second flow of drilling mud into the blowout preventer, wherein the second flow is not delivered through the drill string; stopping the first flow; and removing or adding a tubular to or from the drill string when the first flow is stopped and while continuing to deliver the second flow.