Oil Gas High Quality API Kxj Fishing Bumper Sub Mechanical Jarring Tools

• After-sales Service: Support
• Warranty: Support
• Manufacturing Process: Forging
• Surface Treatment: Polishing
• Operation Pressure: Atmospheric Pressure
• Material: Cast Steel
• Model NO.: KXJ FISHING BUMPER SUB
• Connection: Nc26 31 50; 7 5/8 ,2 3/8, 6 5/8 Reg
• Od mm: 79-229
• ID mm: 25.4-76
• Close Length mm: 1410-2760
• Transport Package: Wooden Case
• Specification: see the detail specification
• Trademark: TIANHE
• Origin: China
• HS Code: 8208101900
• Production Capacity: 50000piece/Year

Product Description

Product Description

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

Specifications - KXJ Type Fishing Bumper Sub

KXJ Fishing Bumper Sub (04)

 

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

Certifications

Company Profile

Tianhe Oil Group Huifeng Petroleum Equipment Co., Ltd is a modernized medium-scale enterprise specialized in production of oil and gas tools.

As an API-Certified established manufacturer and supplier of a comprehensive range of downhole equipment with related accessories, we are committed to providing the highest Quality products for the Petroleum and natural gas industry since 1973.


Tianhe Oil Group strongly believes and promotes Total Quality Management, implement the ISO quality management system and HSE management system and API Standard, which has been deeply implanted into every person's thought and carried out into every aspect of work.

Our manufacturing facilities are well equipped with four automated induction heat treatment lines and dozens of other types of heat treatment ovens and well furnaces to ensure full coverage of heat treatment requirements by different products to achieve the required mechanical properties.

In order to ensure the quality consistency and interchangeability of high precision components, Tianhe has introduced WFL 5-axis Linkage Turning & Milling Machining Center from Austria, Mazak's turn milling machining center from Japan and the Haas vertical machining center from USA. These processes are facilitated with precise quality inspection equipment such as the Brunker OES Metal Analyzers from Germany, Ultrasonic and Magnetic Powder Flaw Detector and high precision Hexagon Three Coordinate Measuring Machine and Farco Portable Three Coordinate Measuring Machine.

So far, Tianhe Oil Group has established strong business relationships with over 200 international oil & gas companies in supporting the top 50 oil producing countries.

We take pride in delivering superior performances and reliability. Our objective is to exceed your expectations, improve your economics and be an integral part of your strategies.