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ZJS Type Jar Intensifier

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ZJS Type Jar Intensifier

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Category： Drilling_Jar

Key words：Drilling_JarZJS Type Jar Intensifier

Service Hotline：+86-513-87635480

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The ZJS type jar intensifier is a down hole fishing jar designed to increase jarring energy to up jar .Therefore ,it must be run in conjunction with CSJ type super jar or YSJ type hydraulic up jar .Its function mainly is to supply acceleration to the upper end of the jar during the free jarring stroke .With a special function ,the intensifier is essentially a fluid spring which not only can accelerate the up jarring action but also make the jarring action directly to strike on the fish and reduce damages to the drill tool and fishing tool .

Thechnical specifications and parameters:

Type mm (in)	ZJS108 (ZJS42)	ZJS114 (ZJS44)	ZJS121 (ZJS46)	ZJS146 (ZJS56)	ZJS159 (ZJS62)	ZJS178 (ZJS70)	ZJS203 (ZJS80)
O.D.(mm)	108	114	121	146	159	178	203
I.D(mm)	32	38	38	51	57	57	70
Overall length of pull down (mm)	4200	3650	3500	4000	4700	3950	3970
stroke(mm)	330	210	230	330	330	310	320
Thread	NC31	NC31	NC38	NC40	NC50	NC50	6 5/8"REG
Max.tensile load downhole (KN)	700	800	900	1200	1500	1800	2200
Sealing pressure Mpa	20	20	20	20	20	20	20
Pull down Full stroke force (tf)	32-38	25-30	30-35	35-40	62-67	75-85	90-100