The Ball-Drop Circulating Tool is placed above bottomhole assemblies such as MWD and LWD tools, core barrels, and mud motors to provide an alternate circulation path for performing critical functions like placing loss circulation material in troublesome zones, avoiding plugging the bottomhole assemblies or damaging the LWD/MWD tools.
The Ball-Drop Circulating Tool is opened and closed using single-sized balls. A second ball size can be used to isolate the flow of fluid through the tool, if required. Once the tool is open, the majority of the flow will exit through the ports and a small amount of flow will go through the tool to cool down the BHA unless a shut-off ball is dropped.
• Ball catcher has 18-ball capacity, and the tool can be opened/closed multiple times
• Helps prevent or remove cuttings-beds buildup, enhance fluid displacement or simplify reverse circulation
• Enables filling or draining the drill string during trips to control surge and swab pressures
• Tool activation mechanism locks into position and is isolated from wellbore fluids
• High circulation rates will not cause the tool to function prematurely
• Outside diameter ranges from 5.00 - 9.50 in. (127.0 – 241.3 mm)
