Custom Surface Bumper Jar Downhole Fishing Tools Mechanical 7′′ Surface Bumper Jar Sub

• Customized: Customized
• Certification: CE, ISO, API
• Direction: Top Drilling Jar
• Structure: Mechanical
• Transport Package: Wood Case or Stantdard Sea Packing
• Specification: O. D. 121-203MM
• Model NO.: DJ46B
• Trademark: Tianhe
• Origin: China
• HS Code: 8431431000
• Production Capacity: 5000000PCS

Product Description

The DJ surface bumper jar has been proven to be a safe and effective tool in releasing stuck tools in drilling operations throughout the years. It is generally connected at the surface section of the drill string during operations which require strong downward jarring impacts. The jarring force can be easily adjusted with the adjustable device located above the rotary disc. The surface bumper jar is easy to operate and is uniquely designed to support continuous down jarring.


Generally when the surface jar makes a jarring operation, the strong down jarring impact on the stuck tool can be clearly seen. Thus, the surface jar     is built to withstand heavy load and strong torque. In addition, it possesses good sealing performance that can withstand mud circulation with high pump pressure.

Specifications - DJ Surface Bumper Jar

Parameter/Model	DJ46B (4 3/4")	DJ70B (7")	DJ70C (7")	DJ80B (8″)
Product Code	0208000	0213000	0213100	0215000
O.D. (mm)(in)	121 (4 3/4″)	178 (7″)	178 (7″)	203 (8″)
Max.Jarring Force MN (tf)	0.4 (41±5)	0.68 (70±5)	0.68 (70±5)	0.68 (70±5)
Max.Tension Load MN (tf)	1.2 (122.00)	1.5 (153.00)	1.5 (153.00)	2.1 (214.30)
Sealing Pressure MPa (kgf/cm2)	30 (294)	30 (294)	30 (294)	30 (294)
Stroke(mm)(in)	1500 (≈59″)	1220 (≈48″)	1800(≈70.87″)	2000(≈78.75″)
I.D. (mm)(in)	30 (1 3/16″)	47 (1 7/8″)	47 (1 7/8″)	50 (Z″)
Connection	NC38	NC50	NC50	NC50
Closed Length (mm)(in)	3095 (121.85″)	3090 (121.8″)	3670 (144.5″)	3890 (153.15″)
Orginal Releasing Force (tf)	15	20	20	20
Weight (kg)	170	450	500	730

 

 

Detailed Photos

Certifications

Packaging & Shipping

 

Company Profile

Our Advantages

Tianhe principle is to offer high quality products at competitive price to benefit our customers and the industry in the long run.
We are the Leading manufacturer in China since 1973 for drilling /fishing /milling equipment for oil and gas.
We have established a complete quality control system, all products& equipments manufactured as per international standard and API standard.
Competitive Advantages
1. We offer high quality products at competitive price.
2. Shortest delivery time & Flexible payment terms.
3. Full range of drilling /fishing /milling equipment for oil and gas.
4. Timely after-sale service.
5. Imported International brands Machines such as Japan Mazak machining center, Austria WFL machining center etc
6. Complete quality control system, offices and testing equipment.
 

 

FAQ

Dear  customer,

Thanks for your time of visiting us on made in china, if you have any further questions and needs, please kindly inform us by inquiry online or contact us by below information.

We look forward to your kind reply, thanks very much.

Ms. Dongyan
Sales Manager

Tianhe Oil Group Huifeng Petroleum Equipment Co., Ltd.