DJ12 Dual Hydraulic Drilling Jar (No Internal Latch)

Powerful. Durable. Reliable.

The DJ12 provides an open metering jar that can fire upon command without overcoming a lock load.


Overview

THE CHALLENGE

A stuck point is one of the most expensive problems to occur downhole and is a significant risk in horizontal or high-angle drilling. When your drill string becomes stuck downhole, you need a high-impact drilling jar to apply force to the stuck point in the drill string. This frees the drill string and allows you to continue drilling or pull out of the hole as quickly as possible.

THE SOLUTION

Tough and durable, the Cougar DJ12 drilling jar is engineered for powerful performance. It can fire hydraulically in either direction and creates maximum impact.

The DJ12 is ideal for fishing, coring, and low WOB applications. This jar provides an open metering that can fire upon command without overcoming a lock load.

It is available in ODs from 4.125” to 10.00”, and it includes a Cougar safety clamp.

Benefits

DJ12 DUAL HYDRAULIC DRILLING JAR

  • Ideal for fishing, coring, and low WOB applications
  • Open metering jar that can fire upon command without overcoming lock loads
  • Cougar external safety clamp included
  • Maximum stroke length for increased impact force
  • Standard operating temperatures up to 250°F (121°C)
  • Seals available for temperatures up to 400°F (204°C) and higher

Specs

AVAILABILITY

  • FOR SALE: all tool sizes available worldwide.
ENGLISH UNITS
Tool
Model
OD
(in)
ID
(in)
Length
(ft)
Weight
(lb)
Pump Open
Area (in²)
Maximum Pull
for Firing (lbf)
Maximum Pull
after Firing (lbf)
Maximum
Torque (ft-lb)
DJ12-4184.1252.00019.06007.8115,000190,000
14,000
DJ12-5004.8752.25019.080011.0
84,000380,000
17,000
DJ12-6506.5502.50018.51,60016.8
156,000
685,000
40,000
DJ12-8008.1502.81319.52,35028.2
291,000
1,150,000
68,000
DJ12-8258.2502.81319.52,40028.2
291,000
1,150,000
68,000
DJ12-9509.5502.81320.03,30033.2
361,000
1,500,000
141,000
DJ12-100010.0003.00020.04,00033.2
400,000
1,500,000
170,000
SI UNITS
Tool
Model
OD
(mm)
ID
(mm)
Length
(m)
Weight
(kg)
Pump Open
Area (cm²)
Maximum Pull
for Firing (daN)
Maximum Pull
after Firing (daN)
Maximum
Torque (Nm)
DJ12-418105515.827250.3
51,10084,500
18,900
DJ12-500124575.836371.0
37,300169,000
23,000
DJ12-65016664 5.6726108.4
69,300
304,700
54,200
DJ12-800207715.91,066181.9129,400511,50092,200
DJ12-825210715.91,088181.9129,400511,50092,200
DJ12-950243716.11,497214.2160,500667,200191,100
DJ12-1000254766.11,814214.2177,900667,200230,500

*Standard operating temperatures up to 250°F / 121°C

**Seals available for temperatures up to 400°F / 204°C and higher


Published torque specs based on ‘high torque’ configuration and materials. Please contact your Cougar Drilling Solutions sales agent for accurate torque specs on all available models.

Resources

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