The LCT– Liner Top Circulating Tool is a robust and simple circulating tool which can be opened and closed by string manipulation. It is landed onto a Liner Top or similar restriction to allow circulation of the casing above. The LCT– Liner Top Circulating Tool is available to suite common casing and liner combinations.
Features
- Functioned by manipulating string weight with out the use of darts or balls
- Can be opened and closed multiple times without limitation
- Shear ring is available with several shear ratings to suit requirements
- Can be used when milling or drilling operations
- Reverse circulation capability before and after shearing
- Robust splined drive system for torque transmittal
- Robust assembly method with back-ups
- Compatible with other OWS ArmRdillo™ wellbore clean-up tools
Benefits
- Cost savings
- The LCT-Liner Top Circulating Tool significantly reduces the time to displace wells by allowing the large casing above a liner to be displaced separately
- Reduces chemical consumption and brine filtration when used in combination with a well-engineered chemical displacement
- The LCT-Liner Top Circulating Tool can be opened and closed at exactly the right moment to accurately spot pills reducing waste volumes
- Increases Well Productivity
- A properly executed wellbore clean-up reduces fine debris which can block screens and pore throats reducing well productivity
- Reducing Non-Productive Time
- A robust wellbore clean-up is proven to reduce nonproductive time during the completion of the well
Applications
- Pre-completion wellbore clean-up operations which include a larger diameter casing and a smaller diameter liner
Operational
- The LCT- Liner Top Circulating Tool can be run independently or as part of a comprehensive wellbore clean-up string
- The LCT- Liner Top Circulating Tool has an integral landing sleeve which lands out inside the Liner Top PBR
- Whilst running in the hole, the string can be reciprocated and rotated to allow the scrapers and other tools to clean the critical depths
- When required the tool is functioned by applying and maintaining string weight to allow circulation of the casing through the opened tool ports
- Chemical pills can be pumped to displace the liner and casing separately and more accurately than using conventional ball activated tools
- To close the tool ports pick up off the liner top