Flow-Release Bulldog Spear

The Flow-Activated Releasable Fishing/ Bull Dog Spear is a variable catch, internal spear used to retrieve a lost-in-hole cylindrical fish from the well bore.

bull dogA complete range of slips are available for each tool size.  To operate, simply run into the fish and set down weight, pick up and retrieve the fish. To release from the fish, set down the weight and circulate in conjunction with a Hydraulic Sequencing Tool above the spear. The spear will then release due to the flow-created differential pressure. 


  • Flow or Drop-Ball Activated
  • Hardened & Double-Tempered Slips
  • Robust Construction
  • Variable Slip Sizes for Each Tool

When Ordering Flow-Activated Releasable Fishing/ Bull Dog Spears, Please Specify:

  • Size
  • Thread Connection
  • Additional Slips Required