China Suppliers Factory Double-Acting Hydraulic Mechanical Drilling Jars for Effective Downhole Impact 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 (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 manufacturing standards do TAKELO drilling jars comply with?
TAKELO manufactures its complete line of drilling jars in full compliance with the API Spec 7-1 standard, ensuring global industry compatibility and reliability.
What types of drilling jars are available in your portfolio?
Our product portfolio includes Hydraulic Drilling Jars for consistent impact with controlled delay, Hydraulic-Mechanical Double-Acting Jars for both upstroke and downstroke impacts, and Fishing Jars reinforced for heavy-duty retrieval.
How do you ensure the quality and durability of your jars?
Each product is forged from alloy steel and subjected to quenching and tempering heat treatment. Furthermore, all load-bearing sections undergo 100% ultrasonic inspection (UT) and magnetic particle inspection (MPI).
What kind of performance testing do these tools undergo?
Functional tests include rigorous hydrostatic pressure verification and fatigue cycle testing that exceeds 5,000 impact strokes at rated load to guarantee maximum field endurance.
Are TAKELO drilling jars suitable for extreme well conditions?
Yes, our drilling jars are engineered to provide reliable impact performance in both conventional and HPHT (High-Pressure, High-Temperature) wells, ensuring operational safety under demanding conditions.
What is the maximum upward jarring force of your largest model?
According to our product specifications, our largest model with an OD of 229 mm (9 inches) can deliver a maximum upward jarring force of up to 1000 KN (225,000 lbf).