When the jar is used. Operators can adjust to picking up it or slacking off it on surface to create up jarring impact or down jarring impact(without addition to the torque or adjustment to the outside part) and adjust impact from very small range to the biggest range needed. the jar can be operated easily and conveniently with high reliability and applied to many downwhole activities of drilling. Coring, fishing, workover etc.

OD	ID	Connection	Max working load(lbf)	Tensile Yield Strength(lbf)	Torsion yield strength(lbf-ft)	up Stroke	Down Stroke
4 3/4"	2 1/4"	NC38	80,000	440,000	20,000	8"	7"
6 1/4"	2 3/4"	NC50	150,000	650,000	50,000	8"	7"
6 1/2"	2 3/4"	NC50	175,000	850,000	60,000	8"	7"
7"	2 3/4"	NC50	200,000	1,050,000	65,000	8"	7"
8"	3"	6 5/8REG	300,000	1,500,000	118,000	8"	7"
9 1/2"	3"	7 5/8REG	500,000	1,900,000	180,000	8"	8"

Other sizes available under customer needs,

 

2.Double Acting Hydraulic-Mechanical Drilling Jar

 

this is a jarring and stuck releasing tool, it integrates the up jar and down jar impact and can release the stuck accident occurring during drilling operation. According to the requirement, the tool can automatically control the impact strength and times of jarring Moreover, it is an ideal tool for vertical well and deflecting well.

OD	ID	Connection	Max working load(lbf)	Tensile Yield Strength(lbf)	Torsion yield strength(lbf-ft)	up Stroke	Down Stroke
4 7/8"	2 1/32"	NC38	110,160	440,000	20,000	9"	6"
6 3/8"	2 1/4"	NC46	139,380	610,000	50,000	9"	6"
6 3/4"	2 1/4"	NC46	139,380	850,000	75,000	9"	6"
7"	2 1/4"	NC50	139,380	1,050,000	100,000	9"	6"
8"	2 13/16"	6 5/8REG	183.000	1,500,000	150,000	9"	6"

 

Other sizes available under customer needs.