Double-Acting Hydraulic Mechanical Drilling Jar - Reliable Tool from China Suppliers and Factory
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 (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 (FAQ)
What types of drilling jars does TAKELO manufacture?
TAKELO manufactures Hydraulic Drilling Jars, Hydraulic-Mechanical Double-Acting Jars, and Fishing Jars, all in full compliance with API Spec 7-1.
What kind of quality inspections are performed on the drilling jars?
All load-bearing sections undergo 100% ultrasonic inspection (UT) and magnetic particle inspection (MPI). Additionally, they pass hydrostatic pressure verification and fatigue cycle testing exceeding 5,000 impact strokes at rated load.
Are TAKELO drilling jars suitable for extreme drilling conditions?
Yes, TAKELO drilling jars are engineered to provide reliable impact performance in both conventional and High-Pressure, High-Temperature (HPHT) wells, ensuring extended service life under demanding conditions.
What materials are used in the manufacturing process?
Each product is produced from premium alloy steel forgings that are subjected to stringent quenching and tempering heat treatments for maximum durability.
What is the maximum upward jarring force for a 9-inch OD drilling jar?
The 9-inch (229 mm) OD drilling jar has a maximum upward jarring force of 1000 KN (225,000 lbf).