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| Warranty: | 2 Year |
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Our sophisticated Hydraulic Drilling Jars feature a dual-piston design separated by a precision-engineered valve. When tension or compression is applied to the armed hydraulic jar, fluid is compressed in one piston and smoothly transferred to the second, overcoming substantial flow resistance. This flow rate precisely regulates the tool's arming time; stronger pulling or pushing forces expedite this process. The stroke-the pivotal movement distance-is meticulously calculated. Once the stroke achieves the designated position, the compressed fluid is unleashed through a bypass valve, rapidly equalizing pressure and generating a potent jarring force. The energy released is directly proportional to the force applied, delivering an unparalleled jarring impact.
In scenarios where the drill string becomes stuck at the bottom during drilling or encounters twist-offs, our jar provides a reliable solution through upward jarring. Should the pipe become lodged off-bottom due to key seats or other impediments, downward jarring effectively releases it. Subsequently, upward reaming methods can efficiently recover the entire drill string, ensuring seamless retrieval and minimized downtime.
In the event of differential sticking, regaining rotation and circulation becomes crucial. Our innovative jars facilitate seamless up-and-down movement without disrupting the drillstring's directional orientation. As neutral tools, they are indispensable for downhole motor directional drilling and directional jetting, ensuring precision and efficiency in every operation.
Our versatile jars are invaluable for a wide range of operations, including fishing and cutting jobs, cementing, coring, and an array of downhole applications. They are essential tools in drilling and production processes, enhancing efficiency and project success.
The Full Hydraulic Drilling Jar Type QY is a marvel of engineering, featuring a needle valve type structure for unmatched hydraulic impact in both upward and downward directions. It allows for stepless tonnage adjustment, offering unparalleled protection and longevity for the drill string. Boasting a patented hydraulic energy storage mechanism, it ensures superior stability. With a delay range from 30 to 240 seconds and operating temperatures between -40ºC to 180ºC, this jar is crafted with cutting-edge materials for enhanced performance and safety. Its applications span drilling, coring, workover, fishing, and beyond, making it a pivotal tool in your operations arsenal.
| 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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