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Our Drilling Jars remain one of the most versatile, reliable and safe assembly systems in the oilfield industry. 

Dyno-Jars are designed for a wide range of drilling applications to meet the demands of high-temperature, extreme and extended use during drilling procedures.

Dyno-Jars have a longer stroke length, which increases the oil flow in the top of the tool, creating greater jarring impact without additional pulling on the drill string. 

Pressure compensation ensures pull accuracy, zero pressure differential and increased seal life.
Features
  • Long operational life, and can withstand high temperatures.
  • Hydraulic time delay feature which gives control of the impact load and also makes the hoisting equipment safe against any possible damages. 
  • Large internal diameter which allows high volumes of fluid passage while maintaining optimum strength in the jar.
  • Can be operated in either tension or compression mode.
  • Fully Pressure Compensated for Prolonged Seal Life
  • Mechanical Lock to Prevent Accidental Activation
  • Minimized Pump Open Area for More Accurate Jarring Force
  • Long Stroke Length for Maximized Impact

1 - 4 of 4 Part Numbers
DMJ-500
DMJ-500
Tool OD: 5" (127mm), Tool ID: 2.250" (57mm), Length: 21.3 ft (6.48m), Weight: 1100 lbs (500kg), Max. Pull While Metering: 92000 lbs (41,730 kg), Max Overpull: 479,770 lbf (213,410 daN), Yield Torque: 15325 ft-lbs (20780 Nm), Pump Open Area: 7.068 in2 (45.6 cm2), Free Stroke: 8: (20.3cm), Overall Stroke 18" (45.72 cm)
DMJ-650
DMJ-650
Tool OD: 6.56" (167mm), Tool ID: 2.563" (65mm), Length: 22.24 ft (6.78m), Weight: 2100 lbs (950 kg), Max Pull While Metering: 198,000 lbs (89,810 kg), Max Overpull: 741,045 lbf (329,635 daN), Yield Torque: 41,705 ft-lbs (56,545 Nm), Pump Open Area: 9.62 in2 (62.05 cm2), Free Stroke: 8" (20.3 cm), Overall Stroke: 18" (45.72 cm)
DMJ-675
DMJ-675
Tool OD: 6.81" (173 mm), Toold ID: 2.563" (65 mm), Length: 22.24 (6.78 m), Weight: 2,100 lbs (950 kg), Max Pull While Metering: 198,000 lbs (89,810 kg), Max Overpull: 741,045 lbf (329,635 daN), Yield Torque: 41,704 ft-lbs (56,545 Nm), Pump Open Area: 9.62 in2 (62.05 cm2), Free Stroke: 8" (20.3 cm), Overall Stroke: 18" (45.72 cm)
DMJ-800
DMJ-800
Tool OD: 8.140" (207 mm), Tool ID: 2.813" (71 mm), Length: 22.40 ft (6.83 m), Weight: 3,100 lbs (1405 kg), Max Pull While Metering: 251,000 lbs (113,850 kg), Max Overpull: 1,584,711 lbf (704,915 daN), Yield Torque: 74,325 ft-lbs (100,770 Nm), Pump Open Area: 15.9 in2 (102.5 cm2), Free Stroke: 8 in (20.3 cm), Overall Stroke: 18 in (45.72 cm)
1 - 4 of 4 Part Numbers

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