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QYSZ Double Acting Hydraulic Drilling Jar
Introduction:
The QYSZ type drilling jar is a kind of hydraulic jar that can be employed to release the drilling tools that are stuck. With this one-piece double acting hydraulic jar, a powerful force is available to the operator and ensures that normal drilling operations can be resumed as soon as possible.
When operating the QYSZ type hydraulic jar, the operator can make adjustments to the jarring force and direction on the ground without the need to adjust the torque. The QYSZ jar is reliable and can be operated with ease.
Application:
It can be applied widely in drilling, coring, fishing and cementing operations.
Working principles
●Upward Jarring
Lifting the drill stem gives the hydraulic jar an upward force, moving the upper hydraulic mechanism along with it. This generates an increased pressure in the working fluid. Thus, when the jar reaches a predetermined stroke, the fluid pressure is released, creating an upward jarring force, releasing the stuck drill stem.
●Downward Jarring
Downward force is applied on the hydraulic jar, to create pressure in the working fluid of the lower hydraulic mechanism. When the jar reaches a predetermined stroke, the fluid pressure is released, creating a downward jarring force to release the struck drill tools.
Available model:
QYSZ121B QYSZ159C QYSZ165B QYSZ172C QYSZ178B QYSZ203B QYSZ241
Specifications - QYSZ Double Acting Hydraulic Drilling Jar
1 Double Acting Hydraulic Drilling Jar QYSZ121B 121 50.8 NC38 9100 530 127 165 350 200 1500 1000 18 10 18
2 Double Acting Hydraulic Drilling Jar QYSZ159C 159 69 NC46 9450 980 190 190 700 350 3750 2000 75 25 26
3 Double Acting Hydraulic Drilling Jar QYSZ165B 165 69 NC50 9450 1020 190 190 700 350 3750 2000 75 25 26
4 Double Acting Hydraulic Drilling Jar QYSZ172C 172 69 NC50 9450 1110 190 190 700 350 3750 2000 75 25 26
5 Double Acting Hydraulic Drilling Jar QYSZ178B 178 69 NC50 8890 1290 190 190 800 400 4650 2400 91 30 51
6 Double Acting Hydraulic Drilling Jar QYSZ203B 203 76.2 6 5/8 REG 9700 1660 190 190 1000 500 6650 2800 133 35 58
7 Double Acting Hydraulic Drilling Jar QYSZ241 241 76.2 7 5/8 REG 9700 2400 190 190 1250 650 7350 3500 180 40 78
