Jining Donghong Machinery Co., Ltd

YSJ Type Z Oil Jar

Application:

used to   free stuck drilling tools in the   well. This jar can produce large up-striking force for fishing and coring operations.

Features:

simple structure, strong jarring force,easy to operate, easily reset  

For better jarring impact,YSJ type z oil jar is recommended to be used together with the ZSJ type jar intensifier.

Working principle

As the piston in the jar slowly moves up the cylinder, the working fluid (hydraulic oil) is pressured and compressed due to its slow out flowing rate. During this hydraulic time delay, elastic potential energy starts to accumulate in the drill tool. When the piston reaches the releasing bore, the hydraulic oil gushes out releasing the pressure, giving the piston a rapid upward load and releasing the elastic potential energy in the drill tool. When the jar pad hits the bottom of the up jar cylinder it creates an impact, this strong dynamic load is then transmitted to release the stuck drill tool. An important feature of this jar is the ease of closing and resetting the tools for consecutive jarring.

Available model:

YSJ95B YSJ108B YSJ114B YSJ121B YSJ159B YSJ178B YSJ203B YSJ229B

Specifications - YSJ Type Z Oil Jar

1 YSJ Type Z Oil Jar YSJ95B 95 28 245 4 160 30 150 NC26 2450

2 YSJ Type Z Oil Jar YSJ108B 108 32 254 4.5 180 30 150 NC31 2450

3 YSJ Type Z Oil Jar YSJ114B 114 38 289 4.9 200 30 150 NC31 2660

4 YSJ Type Z Oil Jar YSJ121B 121 38 290 7.8 300 30 150 NC38 3065

5 YSJ Type Z Oil Jar YSJ159B 159 57 380 15 600 30 150 NC50 3340

6 YSJ Type Z Oil Jar YSJ178B 178 57 380 19.6 650 30 150 NC50 3340

7 YSJ Type Z Oil Jar YSJ203B 203 71 380 22 800 30 150 6 5/8 REG 3500

8 YSJ Type Z Oil Jar YSJ229B 229 76 380 25 900 30 150 7 5/8 REG 3500