Nov Bowen Equivalent Drilling Fishing Jar Lubricated Fishing Bumper Sub

• Customization: Available
• Customized: Customized
• Certification: ISO, API
• Model NO.: Lubricated fishing bumper sub
• Structure: Hydraulic
• Color: Blue
• Connection: Nc
• Payment: L/C T/T
• Size: Customized
• Transport Package: Wooden Box
• Specification: NC26
• Trademark: Tianhe
• Origin: China
• HS Code: 8431431000
• Production Capacity: 50000PC/Year

Product Description

Product Description

BXJ Lubricated Fishing Bumper Sub
Lubricated fishing bumper sub uses the gravitational force of a downward moving heavy weight object to create the jarring force. It is engineered to withstand strong, sustained jarring force in harsh downhole applications, severe fishing operations and deep workover operations. This bumper sub is suitable for both middle and deep downhole operation. It has an inner chamber filled with hydraulic oil to help lengthen its service life.

Lubricated fishing bumper sub is a widely used jarring tool because it is easy     to operate and it assists in multiple applications. This bumper sub can provide necessary impact force in either the upward or downward direction during jarring operations. It can provide strong, continuous downward jarring force and medium, continuous upward jarring force. In addition, it can be used to engage and disengage releasable fishing tools. On top of that, this bumper sub may also act as a constant pressure drill tool.

Working Principle

• Energy conversion in jarring operation

Downward jarring forced is achieved through the conversion of stored energy    to kinetic energy. When lift load is applied to the drill stem, the bumper jar is pulled open to a certain height creating a potential energy. As higher lift load is applied, the drill stem begins to accumulate stored strain energy due to the spring extension. Sudden release of the lift load will convert the stored strain energy     in the drill stem to a downward acceleration force. As the drill stem accelerate downwards, the bumper jar is released towards its closed position, releasing its potential energy. At this instant, both released energies combine, creating a large downward jarring force.
 

• Main factors that influence the jarring force

Hanging weight on top of drill stem with the bumper jar. Higher hanging weight will create higher jarring force.

Length of spring extension of the drill jar. Longer length of spring extension during lifting will provide a greater jarring force.

Stroke length of the bumper jar. Longer stroke length will provide a bigger jarring force.

Product Parameters

Specification-BXJ Lubricated Fishing Bumper Sub

Parameter / Model	BXJ31B	BXJ34B	BXJ36B	BXJ42B	BXJ44B	BXJ46B	BXJ62B	BXJ64B	BXJ70B	BXJ80B
Product Code	1101000	1102000	1103000	1105000	1106000	1108000	1110000	1111000	1113000	1115000
O.D. (mm)	80	89	95	108	114	121	159	165	178	203
I.D. (mm)	25.4	25.4	28	32	38	38	57	57	70	76.2
Sealing Pressure (MPa)	30	30	30	30	30	30	30	30	30	30
Max.Tensile load (tf)	30	40	50	70	80	90	143	143	153	220
Work Stroke (mm)	394	394	394	394	394	400	460	460	465	465
Connection	2 3/8 REG	NC26	NC26	NC31	NC31	NC38	NC50	NC50	NC50	6 5/8 REG
Closed Length (mm)	2355	2400	2514	2450	2450	2446	2730	2730	2950	3108

Detailed Photos

Photos-BXJ Lubricated Fishing Bumper Sub

Certifications

Packaging & Shipping

Company Profile

 Established in 1973 as a state-owned Mudanjiang Petroleum Machinery Factory. After 50 years a new private company(Tianhe) was registered and established in 2006.   At present, Tianhe Group has 5 sales companies, including Chengdu, Beijing, Shanghai, Yanan, Mudanjiang branches. 2 large factories, in cluding Mudanjiang and Shanghai factory, controlling the important sales territories in China. The company is also actively expanding its business overseas. Currently, more than 50 countries and regions around the world, as well as over 200 well-known oil companies and service company customers, are using products under the Tianhe brand. Tianhe has become one of the most popular Asian oil brands.

Our Advantages

1.The company has over 50 years of professional production experience and is capable of independently manufacturing a complete range of downhole tools, including: drill pipes, drill collars, stabilizers, jars, fishing tools, etc.

2. We have a strict quality control system, conducting strict quality checks from raw materials to finished products.

3.The company has obtained ISO9001 quality system certification and holds API certificates such as 5CT, 5DP, 7-1, Q1, etc.

4.The minimum order quantity is 1, and the delivery cycle can be strictly controlled.

5.Our export products have been recognized by customers in more than 50 countries and regions.

FAQ

1.Q:Are you a factory or trading company?
We are a factory and the Top 3 of oildrilling equipment manufacturer.

2.Q:Where is your factory located? 
We locate in Heilongjiang Province, China.

3. Q:What do your factory do regarding quality control?
From material to products, we inspect each process to keep good quality.
And SGS inspection can be accepted.

4.Q:How about MOQ ?
We have stock of common sizes at hand, so even few ton is accepted.

5.Q:How about payment ?
Both T/T and L/C can be accepted.

6.Q: How long does your warranty?
We can assured the quality within 90 days after receiving the cargoes.