The Weight Set Circulating Tool is designed to allow increased annular velocity at a Liner Top to enable solids to be displaced out of the wellbore, as well as spotting of chemical pills and change-out of wellbore fluids. The tool is particularly suited to wells with small liner diameters in which well clean-up operations are performed prior to running completions or test strings.
The Weight Set Circulating Tool is functioned by slacking-off or picking-up the string, removing the need for darts or operating balls, and can be functioned as many times as required. Due to the Weight Set Circulating Tool’s clutch mechanism, only the drill string above the tool is rotated when the tool is in the open position, protecting the lower string from potentially damaging torque. When the tool is closed, the clutch is engaged allowing the whole string to be rotated with circulation being directed through the bit.
• Functioned by slacking off or picking up, removing the need for darts or operating balls
• Only the drill string above the tool is rotated when the tool is in the open position
• Tool can be functioned as many times as required
• Range of tool sizes
• Locking pins
