NightHAWK Accelerator

Get Out of a Tight Spot

Rubicon’s NightHAWK Accelerator can be strategically placed anywhere in the drill-string based on the application to increase jarring forces in both tension and compression forces. The increase in jarring forces is recommended in highly deviated wells, extended reach wells and any other wellbore where issues related to hole drag are imminent. Its unique loading system stores energy during jarring procedures and releases to accelerate drillstring components, maximizing the overall jarring impact. Our jars are completely sealed to prevent cuttings or drilling fluids from damaging the tool.

Making it better

The NightHAWK Accelerator’s jarring action prevents loss of high cost BHAs.

Runs in both tension and compression applications. Operates in even the most extreme temperatures. Triggers jarring in both ways with its double action set up. Proves effective throughout the drill string. Yields uncomplicated jarring procedures with operations based on drilling jar specs.


Unique internal and external coatings stand up in brines and chlorides

Unique internal and external coatings stand up in brines and chlorides

Operates in hole temperatures up to 400˚F

Robust internal design to handle all jarring loads


Max Hole Diameter 6.75 in (171 mm) 26 in (660 mm)
OD 3.5 in (89 mm) 9.5 in (241 mm)
ID 1.25 in (32 mm) 3 in (76 mm)
Length 12 ft (3.66 m) 17 ft (5.19 m)
Weight 340 lb (154 kg) 3100 lb (1404 kg)
Torsional Limit 8,400 ft-lb (11,389 Nm) 161,000 ft-lb (218,287 Nm)
Max Pull for Firing 58,000 lbf (25,798 daN) 395,000 lbf (175,696 daN)
Max Pull after Firing 275,000 lbf (122,320 daN) 1,865,000 lbf (829,552 daN)
Tool Stroke – Up/Down 8 in (203 mm) 11 in (279 mm)
Total Stroke 17 in (432) mm) 23 in (584 mm)
Pump Open Area 3.1 sq in (20.00 sq cm) 38.7 sq in (249.65 sq cm)
Maximum Temp 400˚F (204˚C) 400˚F (204˚C)
Max Circulating Pressure 5000 psi (345 bar) 5000 psi (345 bar)


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