Double-Acting Hydraulic Mechanical Drilling Jars - China Suppliers & Factory Impact Tools for Stuck Pipe Solutions
Product Portfolio
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 (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 industry standard do TAKELO drilling jars comply with?
TAKELO manufactures a complete line of drilling jars in full compliance with the API Spec 7-1 standard.
What types of drilling jars are included in the product portfolio?
The portfolio includes Hydraulic Drilling Jars, Hydraulic-Mechanical Double-Acting Jars (for impacts in both upstroke and downstroke), and Fishing Jars designed for heavy-duty retrieval.
How are the load-bearing sections of the jars inspected?
All load-bearing sections undergo 100% ultrasonic inspection (UT) and magnetic particle inspection (MPI) to ensure structural integrity and quality.
What kind of functional testing do the drilling jars undergo?
Functional tests include hydrostatic pressure verification and rigorous fatigue cycle testing that exceeds 5,000 impact strokes at the rated load.
Are these drilling jars suitable for HPHT environments?
Yes, TAKELO drilling jars are designed to provide reliable impact performance in both conventional and High-Pressure, High-Temperature (HPHT) wells.
What is the maximum upward jarring force for the 8-inch OD model?
The 8-inch (203 mm) OD model can deliver a maximum upward jarring force of 820 KN (184,000 lbf).