I.H. Series Jars™


  • Coiled tubing // stick pipe milling or cleanout operations
  • Coiled tubing // stick pipe fishing operations
  • Can be ran in operations needing bidirectional, unidirectional or bumper jars
  • Proven reliable design for milling operations with hard hitting extended reach tools


  • Robust and dependable design
  • Stroke length and jarring ability similar to competitors with reduced overall length
  • Patented variable shear screw design
  • Built in flex sub

I.H. Series Jars™

About This Product

Igneous HAMMR (IH) Jars

The Workover Solutions IH Series Jars can be used for fishing, workover and Frac plug milling operations on both coiled tubing and stick pipe operations. The WOS IH Series Jars are robust, dependable; provide a high jarring impact while maintaining a short overall length. They are conventionally run as bidirectional hydraulic jars but can easily be converted to be unidirectional jars, for fishing operations, or as bumper jars.

The WOS IH jars are unique since they can be pinned in the closed position prior to operations. In doing so this eliminates some of the internal seal failures associated with jars being ran on milling operations with extended reach tools. The result is a jar that is ready to fire at all phases of the operation.

Product Details

Tool Size 2.88 3.13
Min ID, in 1.00 1.00
Makeup Length, in 62.5 66.5
Stroke Length, in 10.8 12.8
Weight, lbs 76 99
Max Lift Before Jarring, lb 30,000 40,000
Torsional Yield, ft-lb 3200 4875
Torsional Yield After Jarring, lb 167,000 222,000
Tool Connections 2-3/8” PAC Box x Pin 2-3/8” REG Box x Pin