Hydraulic & Mechanical Two-Piece Drilling Jar ZSJ&ZXJ

Product Detail

 

Hydraulic & Mechanical Two-Piece Drilling Jar  ZSJ&ZXJ

Technical Features

 Model ZS(X)J Drilling Jar adopts split structure to realize up-down jarring operation independently. The Top Jar should be acted by hydraulic as to realize the stepless tonnage control；the Down Jar should be acted by mechanical for reliable jarring; It should be used for directional hole, complex hole and inclined hole during the drilling operation.

The drilling jar connecting with drill tool and working with drill strings is a downhole stuck freeing tool in drilling operation. When drill tool is happened to be stuck in downhole, the stuck drill tool can be released by in time starting the drilling jar to provide continuous up jarring or down jarring . It is a desire tool for directional well, complicated well and deep well.

The drilling jar is consisting of ZSJ type drilling up jar and ZXJ type drilling down jar , both can be used mutually or operated separately . The up jarring section takes use of hydraulic mechanism; the jarring force can be adjusted according to up elevating load but can not exceed the max. load for tool load rated. The down jarring section takes use of mechanical friction mechanism; the jarring force is well pre-adjusted by adjusting device before put into down-hole. No re-adjustment can be allowed after jar is put into down-hole.

Technical Parameters

Model	O.D mm/in	I.D mm/in	Connection API	Max.Working load kN/lbf	Yield Pull kN/lbf	Max.Working Torque kN·m/lbf·ft	Yield Torque kN·m/lbf·ft	Max.Working pressure kN/lbf	Working Stroke mm/in	Overall Length Mm/in
ZSJ36	95 3-3/4	28 1.1	2 7/8REG	600 134800	1000 224800	5 3686	10 7373	200 4960	254 10	4162163.8
ZXJ36								100 22480	178 7	3275 128.9
ZSJ62	159 6-1/4	57 2.3	NC46	2100 472000	2700 60700	30 22119	45 33178	700 157000	346 13.6	6394 251.7
ZXJ62								350 78680	182 7.1	5371 211.5
ZSJ80	203 8	71.4 2.8	6 5/8REG	3000 719000	5100 1146000	40 29492	60 44238	1000 224800	370 14.5	6222 245
ZXJ80								450 101100	181 7.1	5243 206.4

 Above list some models, other models also can be supplied as follows:ZS/XJ46(4-3/4"), ZSJ56(5-3/4"),ZSJ64(6-1/2"),ZSJ70(7"),ZS/XJ76(7-3/4").