Drilling Jar

Mechanical Drilling Jar

The mechanical drilling jar type JZ takes the appliance of mechanical structure. And high pressure will not produce in inner chamber as to create a good sealing property and greatly extend the service life. During the drilling operation, the jarring mechanism has no action due to its unique structure which can not be controlled by the common drilling condition and torque, and its unique structure can accurately transmit the torque. Moreover, the up or down jarring blow is adjustable prior to tripping in and will not change during the downhole operation so as to keep a constant jarring load.

Mechanical Drilling Jar

Specification Series and Performance Parameters

TYPE O.D.
mm
(in.)
I.D.
mm
(in.)
Connection
API
Max. Tensile Load
MN
(Lbf)
Max. Working torque
k N·m
(Lbf·m)
Pumping area
cm2
Up jarring stroke
mm
(in.)
Down jarring stroke
mm
(in.)
Overall length
( locked)
mm
(in.)
JZ95 95
(3 3/4)
28
(1 1/8)
2 7/8REG 0.5
(112500)
5
(1,125)
32 200
(7.87)
200
(7.87)
5 800
(228.35)
JZ108 108
(4 1/4)
36
(1 7/16)
NC31 0.7
(157500)
10
(2,250)
38 203
(8.00)
203
(8.00)
6 404
(252.13)
JZ121 121
(4 3/4)
51.4
(2)
NC38 1.0
(225000)
12
(2,700)
60 198
(7.80)
205
(8.07)
6 343
(249.72)
JZ159Ⅲ 159
(6 1/4)
57
(2 1/4)
NC46 1.5
(337500)
14
(3,150)
100 149
(5.87)
166
(6.54)
6 517
(256.57)
JZ165 165
(6 1/2)
57
(2 1/4)
NC50 1.6
(360000)
14
(3,150)
100 149
(5.87)
166
(6.54)
6 517
(256.57)
JZ178 178
(7)
57
(2 1/4)
NC50 1.8
(405000)
15
(3,150)
100 147.5
(5.81)
167.5
(6.59)
6 570
(258.66)
JZ203 203
(8)
71.4
(2 13/16)
6 5/8REG 2.2
(495000)
18
(4,050)
176 144.5
(5.69)
176.5
(6.95)
7 234
(284.80)
JZ229 229
(9)
76
(3)
7 5/8REG 2.5
(562500)
22
(4,950)
181 203
(8.00)
203
(8.00)
7 753
(305.24)

Full Hydraulic Drilling Jar

The full hydraulic drilling jar type QY is a double-acting hydraulic jar and is used to free equipment stuck down hole. It can be used with a down hole motor, because it is capable of torque transmission, and is ideal for use in coiled tubing operations, snubbing, rotary drilling and fishing applications. By adjusting the amount of surface push or pull (no torque or external adjustments are required) the operator can deliver very light or maximum impacts in either direction.

Full Hydraulic Drilling Jar

Specification Series and Performance Parameters

Type O.D.
mm(in.)
 Water Hole
mm(in.)
Overall Stroke
mm(in)
Max. Up
Jarring Load
kN(lbf)
Max.Down Jarring Load
kN(lbf)
Connection
API
Max. Tensile
load
KN(lbf)
Max. Working Torque
kN·m
QY121 121
(4 3/4)
51.4
(2)
9442

350
(78000)

180
(40000)
NC38 1000
(225000)
3.5
(2580)
QY159 159
(6 1/4)
69
(2 23/32)
10323

700
(160000)

350
(78000)
NC46 1500
(337000)
14
(10300)
QY165 165
(6 1/2)
69
(2 23/32)
10323

700
(160000)

350
(78000)
NC46 1500
(337000)
14
(10300)
QY178 178
(7)
69
(2 23/32)
9850

800
(180000)

400
(90000)
NC50 1800
(405000)
15
(11000)
QY203 203
(8)
76
(3)
10261

1000
(225000)

500
(120000)
6 5/8REG 2200
(495000)
18
(13000)
QY241 241
(9 1/2)
76.2
(3)
9987

1200
(270000)

600
(135000)
7 5/8REG 2500
(562000)
22
(16000)

Hydro-mechanical Drilling Jar

The hydro mechanical drilling jar type ZXJ can be used either independently or in conjunction. It is designed for use during drilling operations to apply an intensified force either up or down against a stuck portion of the drilling string .Its unique design combines both a hydraulic time delay release and a mechanical latch mechanism, in one relatively short, double acting drilling jar. Therefore, it is an ideal tool for drilling directional well, complicated well and slant well.
Hydro-mechanical Drilling Jar

Specification Series and Performance Parameters

Type ZXJ36 ZXJ46 ZXJ 56 ZXJ 62Ⅱ ZXJ 64 ZXJ 70 ZXJ 76 ZXJ 80
O.D.                     mm (in.) 95
(3 3/4)
121
(4 3/4)
146
(5 3/4)
159
(6 1/4)
165
(6 1/2)
178
(7)
  197
(7 3/4)
  203
(8)
I.D.                      mm (in.) 28
(1 1/10)
51
(2)
57
(2 1/4)
57
(2 1/4)
57
(2 1/4)
70
(2 3/4)
71.4
(2 4/5)
71.4
(2 4/5)
Connection                   API 27/8REG NC38 41/2FH NC46 NC50 NC50 65/8REG 65/8REG
Max. Tensile Load              MN 0.5 1.0 1.2 1.5 1.6 1.8 2.0 2.2
Max. Working Torque         KN·m 3.5 12 13 14 14 15 16 18
Max. Upward Jarring Load        kN 160 280 400 560 560 640 800 800
Max. Upward Jarring Stroke      mm (in) 254
(10)
305
(12)
330
(13)
346
(13.62)
346
(13.62)
346
(13.62)
370
(14.56)
370
(14.56)
Max. Downward Jarring Load     kN 100 220 300 420 420 480 600 600
Max. Downward Jarring Stroke   mm(in) 178
(7)
182
(7.16)
182
(7.16)
182
(7.16)
182
(7.16)
182
(7.16)
181
(7.12)
181
(7.12)
Max. Working Temperature        ℃ 150 150 120 120 120 120 120 120
Sealing Pressure               MPa 30 30 30 30 30 30 30 30
Overall Length of Up           mm (in)          4 162
(163.85)
6 093
(239.88)
5 410
(213)
6 394
(251.73)
6 736
(265.2)
6 354
(250.15)
6 295
(247.83)
6 222
(244.96)
Overall Length of Down         mm  (in)         3 275
(128.93)
5 138
(202.28)
5 000
(196.9)
5 371
(211.45)
5 457
(214.8)
5 457
(214.8)
5 244
(206.45)
5 249
(206.65)

Drilling Bumper Sub

The drilling bumper sub type ZKX mainly makes the down jarring blow operation, releasing the stuck accident such as the sticking, land filling and keyway effectively and so on. Moreover, it can be also used for fishing operation, or it can be considered as "heave compensator" during offshore drilling.

Drilling Bumper Sub

Specification Series and Performance Parameters

Type Tool O.D.
mm(in)
Hole Diameter
mm(in)
Connection
API
Overall Stroke
mm(in)
Max. Working Load
kN(lbf)
Max. Working Torque
kN.m
Max. Tensile Load
kN(lbf)
ZKX46 121(4 3/4) 50(2) NC38 508(20) 350(79000) 8(5900) 900(202000)
ZKX76 197(7 3/4) 76(3) 6 5/8REG 1520(59 7/8) 770(173000) 15(11000) 1800(404000)
ZKX90 229(9) 76(3) 7 5/8REG 1520(59 7/8) 1300(292000) 20(15000) 2200(494000)

Drilling Accelerator

The drilling accelerator type ZJQ is run in conjunction with a hydraulic drilling jar of the same size, and is manufactured from high strength alloy steel. The tool can not only strengthen the jarring force, but also can absorb much of the jarring shock from the rebounding string to protect tools and strings from damage.

Drilling Accelerator

Specification Series and Performance Parameters

Type O.D.
mm
(in)
Hole Diameter
(in)
Connection            API Max. Working Stroke    mm
(in)
Seal   Pressure      Mpa Max. Working  Load   
KN
Max. Working Torque  KN.M Overall   Length         mm
(in)
ZJQ
46
121
(4 3/4)
50
(2)
NC38 350
(13.78)
30 350
(78750)
8
(5900)
7430
(292.5)
ZJQ
62
159
(6 1/4)
57
(2 1/4)
NC50 350
(13.78)
30 700
(157500)
13
(9600)
7780
(306.3)
ZJQ
64
165
(6 1/2)
57
(2 1/4)
NC50 350
(13.78)
30 750
(168750)
14
(10400)
7780
(306.3)
ZJQ
76
197
(7 3/4)
61.9
(2 2/5)
6 5/8REG 350
(13.78)
30 1000
(225000)
18
(13300)
7630
(300.4)
ZJQ
80
203
(8)
76.2
(3)
6 5/8REG 350
(13.78)
30 1000
(225000)
18
(13300)
7752
(305.2)
ZJQ
95
241
(9 1/2)
76
(3)
7 5/8REG 350
(13.78)
30 1200
(270000)
22
(16300)
6752
(265.8)

Double-acting Mechanical-hydraulic Drilling Jar

The double acting mechanical-hydraulic drilling jar type JYQ is designed for drilling operation to apply an intensified force either up or down against a stuck portion of the drilling string. It incorporates the feature of both hydraulic and mechanical drilling jars, without of the inherent disadvantage of either type. Its unique design combines both a hydraulic time delay release and mechanical latch mechanism in one relatively short, double acting drilling jar.

Double-acting Mechanical-hydraulic Drilling Jar

Specification Series and Performance Parameters

Type O.D.
mm
(in)
I.D.
mm
(in)
Tool Joint
Connection
API
Up Stroke mm
(in)
Down Stroke
mm
(in)
Working Torque
kN.m
(Lb.ft)
Max. Tensile Load
kN
(Lbf)
Max. up Jarring
KN
(Lbf)
Max. down Jarring
KN
(Lbf)
Overall Length
mm
(in)
Piston areas
mm2
JYQ121 124
(4 7/8)
50.8
(2)
NC38 227
(8.9)
102
(4)
12.5
(21000)
1300
(362000)
250
(56250)
200
(45000)
4500
(177)
2516

121
(4 3/4)

57.2
(2 1/4)
NC38 227
(8.9)
102
(4)
12.5
(21000)
1300
(362000)
250
(56250)
200
(45000)
4500
(177)
2827
JYQ159 159
(6 1/4)
57
(2 1/4)
NC46 230
(9)
152
(6)
15
(21000)
2220
(730000)
600
(135000)
330
(74250)
5007
(197)
6446
JYQ165 165
(6 1/2)
70
(2 3/4)
NC50 230
(9)
152
(6)
15
(21000)
2220
(730000)
600
(135000)
330
(74250)
5007
(197)
6446
JYQ178 178
(7)
70
(2 3/4)
NC50 230
(9)
152
(6)
18
(25200)
2220
(730000)
600
(135000)
330
(74250)
5007
(197)
6446
JYQ203 203
(8)
76.2
(3)
65/8REG 232
(9.1)
152
(6)
25
(35000)
2500
(1000000)
800
(180000)
400
(90000)
5095
(200)
9170
JYQ241 241
(9 1/2)
76.2
(3)
75/8REG 232
(9.1)
152
(6)
50
(70000)
5400
(2160000)
1400
(315000)
460
(103500)
5300
(208)
172