Calgary 403.235.2364
Edmonton 780.435.5455
Oklahoma City 405.604.0096

Calgary 403.235.2364
Edmonton 780.435.5455
Oklahoma City 405.604.0096

Hydraulic / Mechanical Drilling Jar (HMJ)

Description:

The Challenger Hydraulic Mechanical Drilling Jar is an all-purpose Drilling jar suited for all drilling applications. This jar is equipped with a mechanical ‘safety” latch and hydraulic delay when jarring upwards, a Mechanical latch for jarring downwards.

The Challenger mechanical “safety” latch keeps the jar locked in the neutral position and eliminates unexpected jarring while tripping or racking the jar in the derrick. Latch release settings can be adjusted to expand the range of the jar placement in the drill string.

Hydraulic Delay while jarring upwards offers the operator the opportunity fire the jars harder or softer. Once the jar starts the delay sequence while jarring up wards the operator can increase the pull to hit harder if desired. It should be noted that the maximum pull during delay should not be exceeded, this limit is provided on our spec sheet.

Benefits & Features:

  • No safety clamp is required
  • Mechanical Latch will keep jar in locked position and prevents unexpected firing while tripping or making connections
  • Can be used in extended reach, directional, or horizontal wells
  • Jar can be ran in compression or tension if required
  • Adjustable latch settings allow jar to be located throughout drill string. (Adjusted in shop prior to shipping)
  • Standard seals in the tool are effective to 275 degrees F (135 degrees C). Jars can be serviced with High Temperature seals effective to 500 degrees F or 300 degrees C
  • Jar is not effected by continuous firing , does not require long periods to cool down jars
  • Hydraulic delay while up jarring allows the operator to vary jarring force (impact) down hole by increasing or decreasing pull
  • Mechanical section of the jar and Hydraulic section are separately sealed from each other providing greater reliability
  • User friendly and durable design allows jars to be used in many applications if required, Coring, Fishing, Air drilling
  • In horizontal, or high angel wells if weight can be applied to jars they are effective in creating a impact
Description:
Jarring Up

When jarring up apply overpull to overcome the latch setting, which initiates the hydraulic delay. During this hydraulic delay sequence the jar can be pulled harder if required which increases the impact force. See the Jar specifications to determine maximum pull during delay.

Pick up string weight above the jar + any hole drag above jar + Jar’s latch setting, the jar will now come out of latch.

Example; String weight above jars 120,000 lbs. + hole drag above jars 20,000 lbs. + Jar’s latch setting 85,000 lbs. = 225,000 lbs. required to pull jar out of latch and begin hydraulic delay.

After impact, apply a down force to close jar re-engage latch, then repeat jarring cycle if needed.

Jarring Down

When jarring down apply weight to Jars to overcome Down latch setting and pump open force, at this point the latch will release in the jar allowing it to fire downwards.

Example; Slack off drill string overcoming latch setting, Down Lock setting 45,000 lbs. + pump open force (if pumps are on) 20,000 lbs. = 65,000 lbs. Jars will fire down.

After impact, pick up drill string to re-latch jars and repeat if needed.

Hydraulic / Mechanical Drilling Jar (HMJ)

Imperial
Nominal
OD (inch)
Length
(ft)
Inside
Diam
(in)
Approx.
Weight
(lbs)
Pump
Open
Area (in2)
Torsional
Limit (ft lbs)
Nominal Up
Latch
Setting (lbs)
Nominal
Down Latch
Setting (lbs)
Max Pull
During
Delay (lbs)
Tensile Yield
(lbs)
3.5016-311.253706.010,3000-45,0000-15,00050,000190,000
4.7516-312.2568011.820,0000-60,0000-35,00085,000352,000
5.2516-312.2570011.824,0000-60,0000-35,00085,000352,000
6.2518-312.251,40019.646,5000-90,0000-45,000160,000803,000
6.5018-312.251,40019.652,4000-100,0000-45,000160,000803,000
6.6220.62.751,60021.753,80090,00040,000170,000722,500
6.7518-312.751,50023.848,0000-100,0000-50,000190,000860,500
8.0019-312.812,20030.779,6000-120,0000-55,000240,000950,000
9.0019-313.003,20038.5162,5000-120,0000-55,000240,0001,288,000

Hydraulic / Mechanical Drilling Jar (HMJ)

Imperial
Nominal
OD (inch)
Length
(ft)
Inside
Diam
(in)
Approx.
Weight
(lbs)
Pump
Open
Area (in2)
Torsional
Limit (ft lbs)
Nominal Up
Latch
Setting (lbs)
Nominal
Down Latch
Setting (lbs)
Max Pull
During
Delay (lbs)
Tensile Yield
(lbs)
3.5016-311.253706.010,3000-45,0000-15,00050,000190,000
4.7516-312.2568011.820,0000-60,0000-35,00085,000352,000
5.2516-312.2570011.824,0000-60,0000-35,00085,000352,000
6.2518-312.251,40019.646,5000-90,0000-45,000160,000803,000
6.5018-312.251,40019.652,4000-100,0000-45,000160,000803,000
6.6220.62.751,60021.753,80090,00040,000170,000722,500
6.7518-312.751,50023.848,0000-100,0000-50,000190,000860,500
8.0019-312.812,20030.779,6000-120,0000-55,000240,000950,000
9.0019-313.003,20038.5162,5000-120,0000-55,000240,0001,288,000
Metric
Nominal
OD (mm)
Length
(m)
Inside
Diam
(mm)
Approx.
Weight
(kg)
Pump
Open
Area (mm2)
Torsional
Limit (N-m)
Nominal Up
Latch
Setting (daN)
Nominal
Down Latch
Setting (daN)
Max Pull
During
Delay (daN)
Tensile Yield
(daN)
894.9-9.431.81703,90014,0000-20,0000-14,80022,20084,500
1214.9-9.457.23007,60027,1000-26,0000-15,50037,800156,600
1334.9-9.4586507,60033,1000-26,0000-15,50037,800180,500
1595.5-9.457.263012,70065,8000-42,0000-20,00071,200357,200
1655.5-9.457.266012,70071,0000-40,0000-20,00071,200357,200
1686.37073013,96872,90040,00017,80075,600321,400
1715.5-9.469.970015,30066,2000-45,0000-22,00084,500382,800
2033.0-9.471.41,00019,800108,0000-50,0000-25,000106,700422,600
2293.0-9.476.21,40024,800220,3000-50,0000-25,000106,700572,900
Metric
Nominal
OD (mm)
Length
(m)
Inside
Diam
(mm)
Approx.
Weight
(kg)
Pump
Open
Area (mm2)
Torsional
Limit (N-m)
Nominal Up
Latch
Setting (daN)
Nominal
Down Latch
Setting (daN)
Max Pull
During
Delay (daN)
Tensile Yield
(daN)
894.9-9.431.81703,90014,0000-20,0000-14,80022,20084,500
1214.9-9.457.23007,60027,1000-26,0000-15,50037,800156,600
1334.9-9.4586507,60033,1000-26,0000-15,50037,800180,500
1595.5-9.457.263012,70065,8000-42,0000-20,00071,200357,200
1655.5-9.457.266012,70071,0000-40,0000-20,00071,200357,200
1686.37073013,96872,90040,00017,80075,600321,400
1715.5-9.469.970015,30066,2000-45,0000-22,00084,500382,800
2033.0-9.471.41,00019,800108,0000-50,0000-25,000106,700422,600
2293.0-9.476.21,40024,800220,3000-50,0000-25,000106,700572,900

Copyright 2011 - 2021. All Rights Reserved. Challenger Downhole Tools.