Overview
The HI Jar™ is a single time intensive gathered energy Horizontal Jar that provides a single jarring force to a stuck tool string.
Designed to provide a high intensity jarring force in long horizontals or highly deviated wells where wireline cable tension is not available, the HI Jar™ serves as insurance to break a faulty plug setting tool shear pin, or free a stuck perforating gun.
It accomplishes this by storing energy in a vacuum chamber that is released using a standard detonator. The wellbore fluid pressure accelerates a piston (and the upper tool string) upward before hitting a hard stop, shocking the lower tool string upward.
Features
Provides a predictable jarring force up to 180,000lbs.
Surface selectable Jar force.
Standard addressable perforating switch telemetry with electrical pass-through capabilities.
Fishing strength: 110klbf.
Benefits
HI Jar™ provides high downhole impact at any deviation.
Jar on command without any time delay.
Detonator can be replaced in minutes due to split ring design.
HI Jar™
Outside Diameter
Made-up Length
Weight
Position in String
Sequential firing required
Upper Connection
Lower Connection
Fishing Strength
Impact Force
Surface selectable
Power Stroke
Pressure Rating
Max Temperature Rating
(detonator limited)
Min Temperature Rating
Axial Shock (g,ms)
Minimum
Max. Pass Through Voltage
Max. Pass Through Current
Features:
Provides a predictable jarring force up to 150,000lbs.
Surface selectable Jar force.
Standard addressable perforating switch telemetry with electrical pass-through capabilities.
Fishing strength: 110klbf.
Benefits:
Hi Jar™ provides high downhole impact at any deviation.
The impact will break all plug setting tool shear pins.
Detonator can be replaced in minutes due to split ring design.
Designed to provide a high intensity jarring force in long horizontals where wireline cable tension is not available, the HI Jar™ serves as insurance to break a faulty plug setting tool shear pin, or free a stuck perforating gun.
It accomplishes this by storing energy in a vacuum chamber that is released using a standard detonator. The wellbore fluid pressure accelerates a piston (and the upper tool string) upward before hitting a hard stop, shocking the lower tool string upward.
The HI Jar™ will ensure that a stuck tool string is retrieved from the hole each time, preventing stuck tool strings, and expensive fishing operations.
