Griffith Double-Acting Hydraulic/Mechanical Drilling Jar
Similar to our standard hydraulic/mechanical jar (HMJ) in design and operation, the benefits of a hydraulic delay downstroke make the double-acting hydraulic/mechanical drilling jar (DAHMJ) more effective for directional, horizontal, and extended-reach drilling. Additionally, no bleed-through operation is required when tagging or picking up off the bottom, making the DAHMJ ideal for compressional placement in the drill string.
- More effective jarring – Hydraulic delay in both upstroke and downstroke
- Engineered for high-friction directional, horizontal, and extended-reach wells – Allows weight stacking before firing, even while horizontal
- Continuous, consistent performance – Modified fluid shearing technology from the aerospace industry provides reliable firing
- Improved safety on the rig floor – The internal mechanical latch prevents unexpected jarring when making connections or drilling and eliminates the need for an external safety collar
Griffith Hydraulic/Mechanical Jar
Our Griffith hydraulic/mechanical drilling jar is well-suited for virtually every drilling condition.
GriffithForce Double-Acting Hydraulic Drilling Jar
The GriffithForce double-acting hydraulic drilling jar offers dependable performance when jarring for extended periods.
PowerStroke Drilling Jar
The PowerStroke drilling jar was engineered with Bowen technology to provide control, power, and flexibility for extended drilling periods in the most demanding applications.
ShockForce Drilling Jar
Achieve industry-leading impact forces and extended stroke length at downhole pressures up to 30,000 psi with our hydraulic drilling jar.