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Double-Acting Hydraulic Mechanical Drilling Jar

Hydraulic Drilling Jar

The up-down jarring of Full-Hydraulic Drilling Jar can be acted hydraulically, realizing the stepless control of up-down jarring tonnage. It can protect the drill string effectively and improve the using life. The hydraulic stored energy mechanism has the advantage of reliable property and good stability. The scope of time delay interval can be 30s~240s; the scope of service temperature can be -40℃~180℃. It can adopt the new special material for higher property and safety. It can normally be used for drilling, coring, work over and fishing etc.

Product Specification

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.

Double Acting Hydraulic-Mechanical Drilling Jar

Double Acting Hydraulic-Mechanical Drilling Jar can integrate the mechanical and hydraulic. The up jarring can be acted by hydraulic as to realize the stepless control of up jarring tonnage. The lock mechanism designed specially can avoid the mistaken jarring of up. The down jarring can be acted mechanically. It can adopt the new special material for higher property and safety and also can be used for directional hole, deep hole and so on.

Product Specification

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.

Mechanical Drilling Jar

Mechanical Drilling Jar up-down jarring tonnage can be adjusted for a large range.The Drilling Jar can be actuated by mechanical fully. The inner chamber cannot produce high-pressure. The change of oiliness cannot impact jarring effect.The low sealing property can make the using life improve observably.The mounted special flexible joint can reduce the bending stress of Jar body effectively.It should adopt the new special material as to insure the higher performance.It should be used for straight hole, deep hole, complicated hole and directional hole.

Product Specification

TYPE O. D. I. D. Conn. Max. Tensile Load Max. Working torque Pumping area Up jarring stroke Down jarring stroke Overall length
mm mm API MN k N· m cm2 Mm Mm ( locked)
(in. ) (in. ) (Lbf) (Lbf· m) (in. ) (in. ) Mm
(in. )
JZ95 95 28 2 7/8REG 0.5 5 32 200 200 5 800
(33/4) (11/8) -112500 (1, 125) -7.87 -7.87 -228.35
JZ108 108 36 NC31 0.7 10 38 203 203 6 404
(41/4) (17/16) -157500 (2, 250) -8 -8 -252.13
JZ121 121 51.4 NC38 1 12 60 198 205 6 343
(43/4) -2 -225000 (2, 700) -7.8 -8.07 -249.72
JZ159 159 57 NC46 1.5 14 100 149 166 6 517
(61/4) (21/4) -337500 (3, 150) -5.87 -6.54 -256.57
JZ165 165 57 NC50 1.6 14 100 149 166 6 517
(61/2) (21/4) -360000 (3, 150) -5.87 -6.54 -256.57
JZ178 178 57 NC50 1.8 15 100 147.5 167.5 6 570
-7 (21/4) -405000 (3, 150) -5.81 -6.59 -258.66
JZ203 203 71.4 6 5/8REG 2.2 18 176 144.5 176.5 7 234
-8 -2 13/16 -495000 (4, 050) -5.69 -6.95 -284.8
JZ229 229 76 7 5/8REG 2.5 22 181 203 203 7 753
-9 -3 -562500 (4, 950) -8 -8 -305.24

Super Fishing Jar

Super Jar is a hydraulic tool, realizing the stepless control of up jarring tonnage. The scope of time delay interval can be 30s~240s; the scope of service temperature can be -40℃~180℃. It can be used with Accelerator as to obtain the remarkable jarring effect. And it can supply the new special material as the requirement as to obtain higher using property and safety. It should be used for fishing and coring of up jarring.

Product Specification

OD ID Connection
3-3/4'' 1 3/32'' 2-3/8REG 4,420 44,960 112,410
4-1/4'' 1 1/4'' NC31 5,530 56,250 157,370
4-1/2'' 2'' NC31 7,220 67,440 179,850
4-3/4'' 2'' NC38 7,220 78,680 202,340
5-1/2'' 2'' NC38 8,770 89,920 224,820
6-1/4'' 2 1/4'' NC50 10,840 157,370 337,230
6-1/2'' 2 1/4'' NC50 10,840 157,370 337,230
6-5/8'' 2 1/4'' NC50 10,840 168,610 359,710
7'' 2 23/64'' NC50 10,840 179,850 404,670
7-3/4'' 3 5/64'' 6-5/8REG 14,450 224,820 472,100
8'' 3 5/64'' 6-5/8REG 14,450 269,780 562,050
9'' 3 5/64'' 7-5/8REG 16,500 303,500 674,460

* Other sizes available under customer needs.


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