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| After-sales Service: | 2 Year |
| Warranty: | 2 Year |
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Our hydraulic drilling jars are ingeniously crafted, featuring a dual-piston design separated by a valve. When tension or compression forces act on the armed jar, fluid in one piston is compressed and flows to the other against significant resistance, ingeniously regulating the arming time through flow rate. With higher pulling or pushing forces, arming times reduce, setting the stage for powerful jarring. The stroke length determines when the compressed fluid releases suddenly via a bypass valve, allowing fluid to surge towards the second piston and instantly balance pressures, creating a potent jarring force. Harness the power: greater force means higher fluid compression, shorter arming time, and intensified jarring impact.
In the event of the drill string getting stuck at the bottom during drilling, or if twist-offs occur, our jar is your reliable solution, delivering an effective upwards jarring motion to release it. Should the pipe become lodged off-bottom in key seats or due to other reasons, a downward jarring action frees it, enabling upward reaming methods to safely recover the entire drill string.
Facing differential sticking challenges? Our jars are pivotal, providing the necessary movement to regain drill pipe rotation and circulation. This flexibility allows our jars to operate seamlessly up and down. Importantly, jar actuation maintains the drillstring's directional orientation, making it an invaluable neutral tool for directional motor drilling and precision directional jetting.
Versatile and reliable, our jars find their utility across various operations, from fishing and cutting jobs to drilling and production tools. Whether you are involved in cementing, coring, or undertaking multiple downhole tasks, our hydraulic drilling jar is an indispensable asset in your toolkit.
The Full Hydraulic Drilling Jar Type QY epitomizes cutting-edge technology with its needle valve structure, offering seamless stepless tonnage adjustment for both upward and downward impacts. This ensures the utmost protection for the drill string and extends its service life. Featuring a patented hydraulic energy storage mechanism, it guarantees exceptional stability, with a versatile delay time range of 30s to 240s, and a robust working temperature range from -40ºC to 180ºC. Crafted from innovative special materials, it promises superior performance and safety, widely applicable in drilling, coring, workover, fishing, and beyond.
| Model | Tool OD mm (in) |
ID of Bore mm (in) |
Connection API |
Allowable Working Tensile kN(Ib) |
Allowable Working Torque kN· m(lb· ft) |
Max. Up Jarring kN(Ib) |
Max. Down Jarring kN(Ib) |
Up Stroke mm |
Down Stroke mm |
Open Length mm |
| QY108 | 108 (4 1/4) |
38 (1 1/2) |
NC31 | 800 (180000) |
10 (7000) |
250 (55000) |
120 (26000) |
152 | 152 | 5835 |
| QY121 | 121 (4 3/4) |
50 (2) |
NC38 | 1100 (250000) |
15 (11000) |
350 (78000) |
180 (40000) |
152 | 152 | 5768 |
| QY127 | 127 (5) |
50 (2) |
NC38 | 1100 (250000) |
15 (11000) |
350 (78000) |
180 (40000) |
152 | 152 | 5768 |
| QY140 | 140 (5 1/2) |
50 (2) |
NC38 | 1100 (250000) |
15 (11000) |
350 (78000) |
180 (40000) |
152 | 152 | 5768 |
| QY159 | 159 (6 1/4) |
57 (2 1/4) |
NC46 | 2000 (450000) |
30 (22000) |
700 (160000) |
350 (78000) |
152 | 152 | 5939 |
| QY165 | 165 (6 1/2) |
57 (2 1/4) |
NC50 | 2000 (450000) |
30 (22000) |
700 (160000) |
350 (78000) |
152 | 152 | 5939 |
| QY172 | 172 (6 3/4) |
57 (2 1/4) |
NC50 | 2000 (450000) |
30 (22000) |
700 (160000) |
350 (78000) |
152 | 152 | 5939 |
| QY178 | 178 (7) |
70 (2 3/4) |
NC50 | 2400 (540000) |
35 (25800) |
800 (180000) |
400 (90000) |
152 | 152 | 6000 |
| QY203 | 203 (8) |
76.2 (3) |
6 5/8REG | 2800 (630000) |
45 (33000) |
1000 (225000) |
500 (110000) |
152 | 152 | 6000 |
| QY216 | 216 (8 1/2) |
76.2 (3) |
6 5/8REG | 2800 (630000) |
45 (33000) |
1000 (225000) |
500 (110000) |
152 | 152 | 6000 |
| QY229 | 229 (9) |
76.2 (3) |
7 5/8REG | 3000 (630000) |
65 (26000) |
1200 (270000) |
600 (132000) |
152 | 152 | 6106 |
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