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| Warranty: | 2 Year |
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Hydraulic drilling jars are masterfully engineered with two pistons separated by a precision valve. When tension or compression engages the armed hydraulic jar, fluid in one piston compresses and flows to the other against a formidable flow resistance, controlling the tool's arming time. In essence, higher pulling or pushing forces lead to quicker arming. The ensuing movement, known as the stroke, culminates when the stroke reaches a critical position, triggering a bypass valve that unleashes the compressed fluid. This action fires the fluid toward the second piston, equalizing pressure instantaneously. The result? A remarkable jarring force, amplified by the force exerted and the fluid's compression level, all achieved in a reduced arming time.
When the drill string encounters obstacles like getting stuck at the bottom during drilling or twist-offs occur, this innovative jar delivers an upward releasing effort with precision. Conversely, if the pipe faces challenges off-bottom in key seats or other obstructions arise, downward jarring provides the solution. With upward reaming methods, you can efficiently recover the entire drill string, ensuring your operations remain uninterrupted and highly efficient.
Facing differential sticking? Our versatile drilling jar is your solution, allowing you to move the stuck pipe to regain crucial rotation and circulation. This unique capability ensures that jars maintain their functionality, moving up and down seamlessly without disturbing the drillstring's directional orientation. Ideal for neutral applications, drilling jars are indispensable in downhole motor directional drilling and directional jetting, promising precision and reliability.
Our remarkable jars excel not only in drilling but also in fishing, cutting jobs, cementing, and coring operations, as well as a multitude of downhole applications. Their versatility and efficiency make them an invaluable asset across various industries, from drilling and production tools to extensive downhole operations, guaranteeing enhanced productivity and effectiveness.
The Full Hydraulic Drilling Jar Type QY features an advanced needle valve type structure, delivering both upward and downward hydraulic impacts with stepless tonnage adjustment. This innovation not only safeguards the drill string but also extends its service life. Our hydraulic energy storage mechanism boasts a patented design, offering unparalleled stability. With a delay time range of 30s to 240s and a working temperature range from -40ºC to 180ºC, this jar adopts revolutionary special materials, enhancing performance and safety. Its widespread application in drilling, coring, workover, and fishing underscores its unmatched 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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