Double-acting Mechanical-hydraulic Drilling Jar Type JYQ
It 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.
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 |
JYQ121Ⅱ | 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) | 17200 |
