Double-Acting Hydraulic Mechanical Drilling Jar - Trusted China Suppliers & Factory for Efficient Drilling Solutions
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 (1,350,000) |
| Torsional Limited | KN·m (lbf-ft) | 13 (10,000) | 15 (11,000) | 20 (14,000) | 45 (33,000) |
| Torsional Yield | KN·m (lbf-ft) | 20 (14,000) | 25 (18,000) | 35 (25,000) | 60 (45,000) |
| Overall Length | mm (ft) | 6370 (20.9) | 7015 (23) | 7310 (24) | 7431 (24.4) |
Frequently Asked Questions
What standards do TAKELO drilling jars comply with?
TAKELO manufactures a complete line of drilling jars in full compliance with the rigorous API Spec 7-1 industry standards.
What types of drilling jars are included in your portfolio?
Our portfolio includes Hydraulic Drilling Jars for consistent impact, Hydraulic-Mechanical Double-Acting Jars for both upstroke and downstroke impacts, and Fishing Jars designed for heavy-duty retrieval.
How do you ensure the quality and durability of your products?
Each product is forged from alloy steel and undergoes quenching and tempering heat treatment. Furthermore, all load-bearing sections are subjected to 100% ultrasonic inspection (UT) and magnetic particle inspection (MPI).
What functional tests are performed on the drilling jars?
Our functional testing includes hydrostatic pressure verification and rigorous fatigue cycle testing that exceeds 5,000 impact strokes at the rated load.
Are TAKELO drilling jars suitable for extreme well conditions?
Yes, our drilling jars are engineered to provide reliable impact performance in both conventional and High-Pressure High-Temperature (HPHT) wells, ensuring operational safety under demanding conditions.