Drilling Jars

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Product Description

①Mechanical Drilling Jar

Technical Features：

The mechanical drilling jar type JZ takes the appliance of mechanical structure. And high pressure will not produce in inner chamber as to create a good sealing property and greatly extend the service life. During the drilling operation, the jarring mechanism has no action due to its unique structure which can not be controlled by the common drilling condition and torque, and its unique structure can accurately transmit the torque. Moreover, the up or down jarring blow is adjustable prior to tripping in and will not change during the downhole operation so as to keep a constant jarring load.

②Full Hydraulic Drilling Jar

Technical Features：

The full hydraulic drilling jar type QY is a double-acting hydraulic jar and is used to free equipment stuck down hole. It can be used with a down hole motor, because it is capable of torque transmission, and is ideal for use in coiled tubing operations, snubbing, rotary drilling and fishing applications. By adjusting the amount of surface push or pull (no torque or external adjustments are required) the operator can deliver very light or maximum impacts in either direction.

③Hydro-mechanical Drilling Jar

Technical Features：

The hydro mechanical drilling jar type ZXJ can be used either independently or in conjunction. It is designed for use during drilling operations to apply an intensified force either up or down against a stuck portion of the drilling string .Its unique design combines both a hydraulic time delay release and a mechanical latch mechanism, in one relatively short, double acting drilling jar. Therefore, it is an ideal tool for drilling directional well, complicated well and slant well.

④Drilling Bumper Sub

Technical Features：

The drilling bumper sub type ZKX mainly makes the down jarring blow operation, releasing the stuck accident such as the sticking, land filling and keyway effectively and so on. Moreover, it can be also used for fishing operation, or it can be considered as "heave compensator" during offshore drilling.

⑤Drilling Accelerator

Technical Features：

The drilling accelerator type ZJQ is run in conjunction with a hydraulic drilling jar of the same size, and is manufactured from high strength alloy steel. The tool can not only strengthen the jarring force, but also can absorb much of the jarring shock from the rebounding string to protect tools and strings from damage.

6.Double-acting Mechanical-hydraulic Drilling Jar

Technical Features：

The double acting mechanical-hydraulic drilling jar type JYQ is designed for drilling operation to apply an intensified force either up or down against a stuck portion of the drilling string. It incorporates the feature of both hydraulic and mechanical drilling jars, without of the inherent disadvantage of either type. Its unique design combines both a hydraulic time delay release and mechanical latch mechanism in one relatively short, double acting drilling jar.

Main Parameters