Safety Clutch System for Circulation/Fill-up/Flowback Tool

A flowback tool is used on a top drive for delivering fluid flow to a tubular, such as a drillpipe or casing. A mechanical stroke on the tool has a mandrel with a mud saver valve and has a barrel. The mandrel connects to a quill of the top drive and has a coupling that can be threaded with the tubular's box connection. The barrel disposed on the mandrel can be moved by a cam engagement as the mandrel is rotated. When prevented from rotating with the mandrel, the barrel can thereby move in a stroke direction along an axis. An annular seal on the barrel is configured to sealably engage with the tubular. A clutch disposed on the barrel can prevent rotation of the barrel when the clutch is engaged with a portion (bail) of the top drive. However, a toque threshold of the clutch allows for slippage during operations.