Stage tools allow the operator to cement targeted zones within the wellbore during casing or liner installation. By cementing certain sections of the well, stage tools prevent lost circulation into the formation by lowering the total hydrostatic pressure exerted on weak zones. Stage tools are often paired with an annular casing packer beneath which provides a positive barrier for the cement column pumped above.
The Mechanical design features opening and closing sleeves that are mechanically sheared with a positive sealing free-fall opening device and pump down plug.
The Hydraulic system is designed for horizontal applications and features a differential piston opening sleeve which can be functioned with applied pressure from surface.
• Accurate cement placement
• Low operational pressures for long reach well cementing
• Anti-rotation opening and closing sleeves lock against rotation during drill-out
• Soft internal materials for fast drill out
• Opening and closing sleeve locking rings prevent tool from reopening
• Vertical, deviated, or horizontal applications
• Weld free
• Lightweight
• Easy to install
• Hydraulic or Mechanical
• High temperature / high pressure seals
• 2-Stage or 3-Stage cementing configuration
• Tapered and extended plug configurations
• Material grades available to meet or exceed customer requirements
