Flow-activated circulating tool aids offshore wellbore cleanupHere's the new flow-activated circulating tool (FACT), which is designed to improve the cost-effectiveness of offshore wellbore cleanup operations.FACT provides an alternative to the traditional ball drop and weight set tooling options. The circulation rate is used to control the tool position via an orifice choke, a spring-loaded tailpipe, and a cam mechanism within the tool. The tool can be run in either a normally closed or normally open condition.The cam profile helps ensure that the tool is not primed for activation until a simple sequence of flow rates has been executed, thus permitting circulation at high flow rates ...

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