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| After-sales Service: | 2 Year |
| Warranty: | 2 Year |
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Our cutting-edge hydraulic drilling jars are meticulously crafted, featuring two pistons ingeniously separated by a high-performance valve. When tension or compression is applied, the armed hydraulic jar fluid in one piston is expertly compressed and transferred to the opposing piston, overcoming significant flow resistance. This ingenious flow rate dictates the time needed to arm the tool, where greater pulling or pushing forces bring about shorter arming times. The displacement, known as the stroke, is where the magic happens. Upon reaching a specific position, the compressed fluid explosively releases through a bypass valve, propelling towards the second piston and instantly normalizing pressure between the pistons. Higher applied forces result in greater fluid compression, abbreviated arming times, and more robust jarring forces, ensuring optimal performance under challenging conditions.
In the event that the drill string becomes lodged at the bottom during drilling or twist-offs occur, our advanced jar delivers its powerful releasing effort in an upward motion with unparalleled precision. Should the pipe become ensnared off-bottom in key seats or for other reasons, it can be liberated through downward jarring. This dynamic capability allows for upward reaming methods to be employed, facilitating the recovery of the entire drill string efficiently and effectively.
When confronting differential sticking scenarios, our jars stand as the solution to mobilize the stuck pipe, allowing normal rotational and circulatory functions to resume. Jars can be operated up and down seamlessly, preserving the directional orientation of the drillstring. This capability makes them invaluable neutral tools for directional drilling with downhole motors and directional jetting, ensuring uninterrupted and precise operations.
Our hydraulic drilling jars are versatile tools that shine in various applications, including fishing, cutting, drilling, and production tasks. They excel in cementing, coring, and a multitude of other downhole operations, offering unmatched adaptability and performance across domains.
The Full Hydraulic Drilling Jar Type QY is a masterclass in innovation, featuring a needle valve-type structure that provides hydraulic impacts both up and down, with seamless tonnage adjustments. This remarkable tool effectively safeguards the drill string and prolongs its service life. Its hydraulic energy storage mechanism, protected by a patent design, ensures exceptional stability. With a delay time ranging from 30 to 240 seconds and a working temperature scope of -40ºC to 200ºC, it is crafted from cutting-edge special materials for superior performance and safety. Widely applicable in drilling, coring, workover, and fishing, it is the epitome of versatility.
| 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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