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Ultimate Double Acting Hydraulic Drilling Jar

HJDA Product Flyer

DHJDA Product Flyer

Product Catalog

Imperial

Nominal OD (inch)Length (ft)Thru Bore (inch)Tensile Yield (lbs)Torsional Limit
(ft lbs)
Max Pull During Delay (lbs)Free Stroke Up/Down (inch)Total Stroke (inch)
3.3814.31.50234 9009 00050 0007.021.0
4.2516.92.00300 80016 30070 0008.025.0
4.7517.4 2.25370 60021 50085 0008.025.0
6.2517.92.25938 90050 700160 0008.025.0
6.5018.12.751 220 00051 000175 0008.025.0
6.7517.92.751 220 00051 500190 0008.025.0
8.0018.22.811 293 900103 200240 0008.025.0
9.5019.03.002 106 900189 300300 0008.025.0

Metric

Nominal OD (mm)Length (m)Thru Bore (mm)Tensile Yield (daN)Torsional Limit (Nm)Max Pull During Delay (daN)Free Stroke Up/Down (mm)Total Stroke (mm)
864.338104 50012 20022 200180530
1085.251133 80022 10031 100200640
1215.357164 80029 10037 800200640
1595.457417 60068 70071 200200640
1655.570542 70069 10077 800200640
1715.570542 70069 80084 500200640
2035.571575 500139 900106 800200640
2415.876937 100256 700133 400200640

Double Acting Hydraulic Drilling Jar

The Park City Double Acting Hydraulic Drilling Jar (HJDA) is a bi-directional drilling jar incorporating hydraulic delay without a latch mechanism. This jar will allow the operator to apply variable impact in both the up and down directions. The HJDA is intended for use in highly deviated or high friction wells, where conditions may prevent applying sufficient force to release a mechanical latch.

Features & Benefits
  • The HJDA is hydraulically controlled and jars in both directions, with impact force controlled by the operator.
  • Impact force is controlled by a metering device that ensures consistent delay times over the full range of operating temperatures.
  • The HJDA operates via a simple up and down motion and is unaffected by right- or left-hand torque.
  • Standard seals are suitable for use up to 250°F (120°C). Optional high temperature seal kits are available suitable for service to 400°F (200°C). External sealing surfaces are tungsten carbide-coated to enhance wear and corrosion resistance.
Operation

Jarring Up

  • With the jar in the neutral position, apply the desired overpull in excess of the free string weight, starting the hydraulic delay sequence. At the end of the hydraulic delay, the jar will release causing an upward impact force.
  • If necessary, lower the drill string sufficiently to close the jar to the neutral position, ready to jar up again.

Jarring Down

  • With the jar in the neutral position, lower the drill string to apply the desired down force, starting the hydraulic delay sequence. At the end of the hydraulic delay, the jar will release causing a downward impact force.
  • If necessary, raise the drill string sufficiently to open the jar to the neutral position, ready to jar down again.
Handling
  • To prevent unintentional tripping during handling, the HJDA is fitted with a safety clamp to keep the jar in the fully extended position. The safety clamp must remain installed until the jar is ready to run into the hole.
  • When preparing to run into the hole, connect the jar to the drill string and apply tension before removing the safety clamp.
  • When coming out of the hole, install the safety clamp while the jar is still under tension and fully extended.
Gallery

Ultimate Double Acting Hydraulic Drilling Jar

HJDA Product Flyer

DHJDA Product Flyer

Product Catalog

Technical Specifications

Imperial

Nominal OD (inch)Length (ft)Thru Bore (inch)Tensile Yield (lbs)Torsional Limit
(ft lbs)
Max Pull During Delay (lbs)Free Stroke Up/Down (inch)Total Stroke (inch)
3.3814.31.50234 9009 00050 0007.021.0
4.2516.92.00300 80016 30070 0008.025.0
4.7517.4 2.25370 60021 50085 0008.025.0
6.2517.92.25938 90050 700160 0008.025.0
6.5018.12.751 220 00051 000175 0008.025.0
6.7517.92.751 220 00051 500190 0008.025.0
8.0018.22.811 293 900103 200240 0008.025.0
9.5019.03.002 106 900189 300300 0008.025.0


Metric

Nominal OD (mm)Length (m)Thru Bore (mm)Tensile Yield (daN)Torsional Limit (Nm)Max Pull During Delay (daN)Free Stroke Up/Down (mm)Total Stroke (mm)
864.338104 50012 20022 200180530
1085.251133 80022 10031 100200640
1215.357164 80029 10037 800200640
1595.457417 60068 70071 200200640
1655.570542 70069 10077 800200640
1715.570542 70069 80084 500200640
2035.571575 500139 900106 800200640
2415.876937 100256 700133 400200640

Specifications are based on as new condition and are subject to change without notice.

Sales & Rental Inquiries

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© Copyright | Park City Drilling Technologies. All Rights Reserved.
Brad Martens

Brad Martens has 39 years of experience in management and sales roles, both domestic and international. A belief in quality and performance of products sets Park City apart from competitors. Providing value and putting the customer first is critical to our success.

Bob Howard

Mr. Howard has 46 years industry experience and has held operations management positions both domestically and internationally.  Bob  is a strong proponent of “uncompromised quality” with a dedicated commitment to meeting Customers’ performance expectations.

Bob Ferguson

Bob Ferguson is the CFO of the newly formed Park City Drilling Technologies. Bob has more than 30 years experience and has held various senior financial roles in the oil and gas industry.

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