The ADT Hammer is a dual action hydraulic jar that can provide UP and DOWN jarring blows of variable intensity to free stuck drill strings. The complete Hammer assembly consists of the hydraulic drilling jar (HDJ) and an upper and lower flex joint. The upper flex joint is designed with an integral elevator recess for easy handling.

The SUPERFORCE JAR is a double acting hydraulic drilling jar. The SUPERFORCE JAR is delivered to location in the OPEN position (approximately 29 inches of mandrel exposed) and usually will be open when it is pulled out of the hole.

Nov 1, 2017 · Looking to gain a deeper understanding of drilling jars? This comprehensive guide covers everything from the types of drilling jars to the calculations, placement, and operation.

Weatherford’s Dailey hydraulic drilling jar (HDJ) is a double-acting hydraulic jar designed for simple operation, variable hitting loads, and extended periods of continuous jarring in a wide range of drilling conditions.

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The Hydra-Jar AP drilling jar is suitable for every drilling environment on land or offshore, in vertical or deviated wells, and in ultradeep or ultrahot boreholes. Because the jar works without applied torque, directional drilling tools maintain their orientation throughout the jarring operation.

With fewer internal components and fewer moving parts, the Hydra Hammer Jar is built strong and simple to minimize risk of failure. Our unique fluid metering system allows you to regulate the consistent time delay when fluid is transferred from chamber to …

Offering a hydraulic delay in the upstroke and acting as a traditional mechanical jar in the downstroke, the HMJ provides consistent firing regardless of the direction or temperature downhole. Internal mechanical latches allow the jar to be run in …

The Hydra Hammer Drilling Jar is used to apply a mechanical impact on another downhole component—such as dislodging a stuck BHA. This hydraulic drilling jar is capable of jarring both upward and downward, and can be configured to deliver an impact load in a variety of directions and magnitudes to get you back on track.

G-Force Hydraulic jars use a piston (metering device) and oil to create a time delay. Once the energy is stored, the jar piston bypasses (step), creating a hammer-and-anvil effect that imparts an impact load to the end of the tool assembly.