Ysj Type Hydraulic up Jars (YSJ)

• Structure: Hydraulic
• Transport Package: Iron Frame
• Specification: all
• Trademark: Tianhe
• Origin: Shanghai China
• Model NO.: YSJ Type
• Production Capacity: 50000PCS

Product Description

Product Description
YSJ type hydraulic jar is used to free stuck drilling tools in the well. This jar can produce large up-striking force for fishing and coring operations. Through hydraulic principle, a sudden release of the elastic potential energy that accumulates in the drill tool during the hydraulic time delay will create a large up jarring force. The key advantages of YSJ type Z oil jar is that with its simple structure. It provides strong jarring force, is easy to operate and can be easily reset to the pre-load position for consecutive jarring. 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.

 

 YSJ type hydraulic up jar reach up jarring purpose by applying hydraulic principle and big elastic energy released suddenly from elastic deformed drill toll. It will obtain better result when use with ZJS type jar textensifier.

Specifications-YSJ Type Z Oil Jar

Type Parameter	YSJ114B	YSJ121B	YSJ159B	YSJ178B	YSJ203B
O.D. (mm)	114	121	159	178	203
I.D. (mm)	38	38	57	57	70
Stroke(mm)	289	290	380	380	390
Tensile load (KN)	780	980	1270	1370	1570
Max.work torque	4.9	7.8	15	19.6	23..5
Max.jarring lift tons (tf)	200	300	710	750	800
Sealing pressure	20	20	20	20	20
Max.work tempersature C	150	150	150	150	150
Threads API	NC31	NC38	NC50	NC50	65/8"REG