Double-Acting Hydraulic Mechanical Drilling Jar - China Suppliers & Factory for Efficient Stuck Pipe Release
Product Portfolio
TAKELO manufactures a complete line of drilling jars in full compliance with API Spec 7-1:
- Hydraulic Drilling Jars provides consistent impact force with controlled delay.
- Hydraulic-Mechanical Double-Acting Jars, capable of delivering impacts in both upstroke and downstroke.
- Fishing Jars, reinforced for heavy-duty retrieval of stuck bottom hole assemblies.
Quality and Performance
Each product is produced from alloy steel forgings subjected to quenching and tempering heat treatment. All load-bearing sections undergo 100% ultrasonic inspection (UT) and magnetic particle inspection (MPI). Functional tests include hydrostatic pressure verification and fatigue cycle testing exceeding 5,000 impact strokes at rated load. Tool joints and mandrels are dimensionally verified for torque capacity and wear resistance.
With these measures, TAKELO drilling jars provide reliable impact performance in both conventional and HPHT wells, ensuring operational safety and extended service life under demanding drilling conditions.
Product Specification
| OD | mm (inch) | 121 (4-3/4) | 165 (6-1/2) | 203 (8) | 229 (9) |
| ID | mm (inch) | 50.8(2) | 57.2 (2-1/4) | 71.4 (2-13/16) | 76.2 (3) |
| Tool Joint Connection | API | NC38 | NC50 | 6-5/8 REG | 7-5/8 REG |
| Max. Upward Jarring Force | KN(lbf) | 450 (100,000) | 630 (140,000) | 820(184,000) | 1000 (225,000) |
| Max. Downward Jarring Force | KN(lbf) | 230 (51,700) | 360 (81,000) | 460 (103,500) | 500 (112,000) |
| Max. Tensile Load | KN(lbf) | 1100 (247,000) | 2000 (450,000) | 2500 (562,000) | 3000 (675,000) |
| Tensile Yield | KN(lbf) | 1500 (337,000) | 3000 (675,000) | 4000 (900,000) | 6000 (1350,000) |
| Torsional Limited | KN m (lbf-ft) | 13 (10,000) | 15 (11,000) | 20 (14,000) | 45 (33,000) |
| Torsional Yield | KNm (lbf-ft) | 20 (14,000) | 25 (1&000) | 35 (25,000) | 60 (45,000) |
| Overall Length | mm (ft) | 6370 (20.9) | 7015 (23) | 7310(24) | 7431 (24.4) |
Frequently Asked Questions (FAQ)
What standards do TAKELO drilling jars comply with?
TAKELO manufactures a complete line of drilling jars in full compliance with API Spec 7-1.
What types of drilling jars are available in your portfolio?
Our product portfolio includes Hydraulic Drilling Jars, Hydraulic-Mechanical Double-Acting Jars, and Fishing Jars.
What is the difference between Hydraulic and Double-Acting Jars?
Hydraulic Drilling Jars provide consistent impact force with controlled delay, whereas Hydraulic-Mechanical Double-Acting Jars are capable of delivering impacts in both the upstroke and downstroke.
How do you ensure the quality of your drilling jars?
Each product is produced from alloy steel forgings subjected to quenching and tempering heat treatment. Furthermore, all load-bearing sections undergo 100% ultrasonic inspection (UT) and magnetic particle inspection (MPI).
What functional tests are performed on the tools?
Functional tests include hydrostatic pressure verification and fatigue cycle testing exceeding 5,000 impact strokes at rated load. Tool joints and mandrels are also dimensionally verified for torque capacity and wear resistance.
Are TAKELO drilling jars suitable for extreme well conditions?
Yes, with our rigorous manufacturing and testing measures, TAKELO drilling jars provide reliable impact performance in both conventional and HPHT (High Pressure, High Temperature) wells.