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ST5 SHOCK TOOL [ Overview ] [ Operating Features ] [ Specifications ] [ Brochures ]

Operating Features

  • Cougar shock tool’s unique Belleville spring arrangement allows us to provide spring rates tailored to specific applications. The shock tool is supplied with a standard spring configuration to ensure optimim performance with typical tool placement and drill bit configurations. The Cougar shock can be supplied with a spring arrangement specifically tailored to PDC bit usage. PDC bit spring configurations are a special arrangement of the Belleville spring at the time of tool service, but can be supplied in any size of Cougar shock tools.
  • The Cougar shock tool can be run with the mandrel either up or down. The shock tool mandrel has a large diameter with sealing surfaces that provide excellent wear and corrosion characteristics. Ample wear surfaces are provided inside this tool to maximize its stiffness as well as provide excellent tool action. This makes the Cougar shock tool equally effective in either orientation.
  • Cougar shock tool seal material and wear surfaces have been selected to provide maximum service life in all drilling mud systems. Invert mud systems and silicate mud systems are fully compatible with the Cougar shock tool.
  • Bi-directional spring action allows the Cougar ST5 to compress or extend to compensate for any combination of bit weight or pressure drop across the bit.
  • The advanced engineering of the Cougar steel springs provides excellent vibration dampening.
  • Standard operating temperatures up to 225°F (107°C). Special seals are available for operating temperatures up to 450°F (232°C)
  • The hydrostatically balanced ST5 has a special floating piston to prevent closing under deep drilling conditions.
  • ST5 body connections are kept to a minimum to reduce potential failures.

ST5 Shock Tool Placement

For optimal tool performance, the Cougar ST5 shock tool should be placed immediately above the bit to minimize the amount of un-sprung mass below the tool.

The Cougar ST5 shock is best located in a position where it is exposed to a minimum of side loading or bending stress. The shock tool should have the equivalent amount of stabilization on either end. If it is stabilized at the lower connection, there should be stabilization within 30' (10m) of the upper connection.