Drilling Fishing Bumper Sub Type Kxj Fishing Bumper Sub Oil Drilling Jar

• Customization: Available
• After-sales Service: 1year
• Warranty: 1year
• Model NO.: Fishing Bumper Sub
• Manufacturing Process: Casting
• Surface Treatment: Polishing
• Operation Pressure: Atmospheric Pressure
• Material: Alloy
• 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

KXJ Finshing Bumper Sub
KXJ type bumper sub is a mechanical jarring tool. It allows operators to bump up or down repeatedly until the fishing objectives are met or when the stuck drill stem is released. In event where stuck drill stem cannot be released by lifting and jarring,  the bumper sub can be rotated to engage and disengage releasable fishing tools to release the fish. In milling and cutting operations, the bumper sub is used to provide feeding force to the mechanical internal cutter, ensuring a reliable and even cut. When the bumper sub is used with a reversing unit, it helps to compensate the rising stroke for threads after reversing.
 

Working mechanism

• 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 more 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 stem. 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-KXJ Finshing Bumper Sub

Parameter/Model	KXJ31B	KXJ34B	KXJ36B	KXJ42B	KXJ44B	KXJ46B	KXJ62B	KXJ64B	KXJ70B	KXJ76B	KXJ80B	KXJ85B	KXJ90B
Product Code	0401100	0402000	0403000	0405000	0406000	0408000	0410000	0411000	0413000	0414000	0415000	0419000	0416000
O.D. (mm)	79	89	95	108	114	121	159	165	178	197	203	219	229
I.D. (mm)	25.4	28	32	38	38	38	51	51	70	70	70	76	76
Sealing Pressure (MPa)	30	30	30	30	30	30	30	30	30	30	30	30	30
Max.Tensile Load (kN)	300	400	500	700	1120	1200	1430	1430	1530	1630	1630	1630	2200
Max.Work Torque (kN.m)	3	3.5	4	6	7	8	13	13	15	20	20	20	25
Work Stroke (mm)	508	508	508	1000	1000	1000	1400	1400	1400	1500	1500	508	1500
Connection	2 3/8 REG	NC26	NC26	NC31	NC31	NC38	NC50	NC50	NC50	6 5/8 REG	6 5/8 REG	6 5/8 REG	7 5/8 REG
Closed Length (mm)	1410	1438	1410	2100	2100	2110	2604	2604	2650	2730	2730	1769	2760
Weight (kg)	45	50	58	95	117	146	240	285	330	430	455	383	660

Detailed Photos

Photos-KXJ Finshing 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.