Description
BXJ Lubricated Fishing Bumper Sub
Oilfield Fishing Bumper Jar for Stuck Pipe Recovery, Workover and Deep Well Fishing
SGPE manufactures the BXJ Lubricated Fishing Bumper Sub for oilfield fishing, stuck pipe recovery, workover service and deep well operations. The tool helps the fishing string generate strong jarring impact through drill string movement and stored drill stem energy. Field crews use it to release stuck pipe, recover downhole fish, operate releasable fishing tools and handle difficult fishing jobs in oil and gas wells.
The BXJ bumper sub works in both downward and upward jarring operations. It delivers strong downward impact and stable medium upward impact when the fishing string needs force from different directions. Drilling contractors, workover crews and fishing service companies can use it when the stuck point requires controlled impact from the fishing string.
SGPE builds the BXJ series with an internal hydraulic oil chamber. The oil reduces friction, protects moving parts and keeps the tool moving smoothly during repeated jarring cycles. This design supports longer service life in harsh downhole conditions.
Need help choosing the right model?
Send SGPE your well depth, hole size, fishing string size, connection type and expected tensile load. Our team will help you select a suitable BXJ bumper sub for your operation.
Product Snapshot
| Item | Details |
|---|---|
| Product Name | BXJ Lubricated Fishing Bumper Sub |
| Product Type | Oilfield fishing bumper jar / downhole jarring tool |
| Main Function | Downward and upward jarring for fishing strings |
| Main Applications | Stuck pipe recovery, downhole fishing, workover, deep well operations |
| O.D. Range | 80 mm to 203 mm |
| I.D. Range | 25.4 mm to 76.2 mm |
| Sealing Pressure | 30 MPa |
| Max. Tensile Load | 30 tf to 220 tf |
| Work Stroke | 394 mm to 465 mm |
| Connections | 2 3/8 REG, NC26, NC31, NC38, NC50, 6 5/8 REG |
Product Overview
The BXJ Lubricated Fishing Bumper Sub, also known as a lubricated bumper jar, oilfield fishing bumper sub, hydraulic fishing bumper sub or downhole jarring tool, helps crews apply repeated impact force to a stuck point in the well.
Fishing and workover jobs often involve stuck pipe, lost tools, stuck downhole assemblies or other fish. These problems can delay the rig and increase operating costs. The BXJ bumper sub transfers controlled jarring force through the fishing string, so crews can work on the stuck point repeatedly.
The tool also assists the engagement and disengagement of releasable fishing tools. In suitable bottom-hole assemblies, it may support drilling-related operations that need controlled axial movement and impact force.
For oilfield service companies, drilling contractors and workover teams, this tool adds reliable impact force to the fishing string without complicated field operation.
Key Advantages
Strong Downward Jarring Force
The BXJ Lubricated Fishing Bumper Sub converts drill stem strain energy and tool stroke movement into strong downward impact. This impact helps loosen stuck pipe, stuck tools and downhole fish during demanding fishing jobs.
Stable Upward Impact
The tool also provides medium and continuous upward jarring force. This gives crews more control when the stuck object needs impact from different directions.
Hydraulic Oil Lubricated Chamber
SGPE fills the internal chamber with hydraulic oil. The oil lowers friction, supports smoother movement and helps extend service life during repeated impact cycles.
Suitable for Medium and Deep Wells
The BXJ series works in medium-depth and deep oil and gas wells. Larger models support heavier fishing strings, higher tensile loads and severe workover conditions.
Simple Field Operation
Operators create impact through controlled lifting and releasing actions of the drill string. The simple mechanical principle helps crews save rig time and operate the tool with confidence.
Wide BXJ Model Range
SGPE offers BXJ models from BXJ31B to BXJ80B. Outside diameters range from 80 mm to 203 mm, and maximum tensile load reaches 220 tf. This range helps customers match the bumper sub to different hole sizes, connections and fishing string designs.
Oilfield Applications
The SGPE BXJ Lubricated Fishing Bumper Sub supports many oil and gas well operations, including:
- Stuck pipe recovery
- Downhole fish recovery
- Lost tool recovery
- Workover fishing jobs
- Deep well fishing operations
- Severe downhole jarring
- Releasable fishing tool engagement
- Releasable fishing tool disengagement
- Downward jarring in fishing strings
- Upward jarring in fishing strings
- Fishing assembly impact operations
- Drilling assistance where applicable
- Harsh downhole service in petroleum wells
Whether the job involves stuck pipe, a lost tool, a stuck fishing assembly or a deep well problem, the BXJ bumper sub helps the fishing string deliver impact to the target point.
Typical Downhole Use Cases
The BXJ Lubricated Fishing Bumper Sub works well in oilfield operations that need repeated axial impact. Common use cases include:
- Releasing stuck pipe during workover operations
- Applying impact to a stuck fishing assembly
- Recovering downhole fish in oil and gas wells
- Assisting releasable fishing tools during engagement or release
- Adding downward jarring force in a fishing string
- Providing upward impact when the stuck point needs reverse shock
- Supporting deep well fishing jobs with higher tensile load requirements
These use cases make the BXJ series a practical stuck pipe recovery tool, workover fishing tool and downhole fishing tool for demanding field conditions.
Working Principle
How the BXJ Lubricated Fishing Bumper Sub Generates Jarring Force
The BXJ bumper sub creates jarring force through energy conversion.
First, the operator applies lifting load to the drill stem. The bumper jar opens to a certain stroke. At the same time, the drill stem stretches and stores strain energy.
Next, the operator releases the lifting load. The drill stem moves downward, and the bumper sub quickly returns toward its closed position.
Finally, the stored energy changes into impact force. This force travels through the fishing string and acts on the stuck pipe, stuck tool or downhole fish.
This working principle allows crews to create repeated impact without complicated field operation.
Main Factors That Affect Jarring Force
Hanging Weight Above the Tool
Higher hanging weight above the bumper sub creates greater impact force. Operators can adjust the fishing string according to the required jarring effect and well condition.
Drill Stem Extension
Longer drill stem extension stores more strain energy. When the operator releases the load, the stored energy creates stronger downward acceleration.
Stroke Length
A longer stroke allows the tool to release more energy during movement. This can increase the jarring effect during fishing and workover operations.
Well Condition and Fishing String Design
Well depth, hole size, string weight, connection type and stuck condition can all influence the final jarring result. SGPE can help customers review these factors before model selection.
Why Choose SGPE BXJ Lubricated Fishing Bumper Sub?
SGPE supplies practical oilfield fishing tools, drilling tools and workover tools for petroleum well operations. The BXJ Lubricated Fishing Bumper Sub combines strong impact performance, hydraulic oil lubrication, easy operation and a complete model range.
SGPE Advantages
- Full BXJ model range from BXJ31B to BXJ80B
- Outside diameter options from 80 mm to 203 mm
- Maximum tensile load up to 220 tf
- Sealing pressure up to 30 MPa
- Work stroke up to 465 mm
- Common oilfield connections available
- Hydraulic oil chamber for smoother jarring movement
- Model selection support based on actual well conditions
- Technical communication before order confirmation
- Suitable for fishing, workover and well intervention operations
For drilling contractors, oilfield service companies and workover teams, SGPE helps match the right bumper sub to the job. The correct model can help crews apply impact more effectively and reduce costly rig downtime.
Technical Specifications
BXJ Lubricated Fishing Bumper Sub Specifications
| Parameter / Model | BXJ31B | BXJ34B | BXJ36B | BXJ42B | BXJ44B | BXJ46B | BXJ62B | BXJ64B | BXJ70B | BXJ80B |
|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
Need a suitable model for your well?
Send SGPE your hole size, fishing string size, required connection and working condition. We will help you select the right BXJ lubricated fishing bumper sub.
Model Selection Guide
Choosing the right BXJ Lubricated Fishing Bumper Sub depends on the actual well condition, fishing string design and required jarring force. Before ordering, customers should consider the well depth, hole size, fishing string size, required outside diameter and inside diameter, connection type, expected tensile load, required work stroke, downhole pressure, downhole temperature, stuck condition, fishing target and workover or drilling operation details.
For smaller fishing strings, models such as BXJ31B, BXJ34B and BXJ36B offer compact tool sizes and practical stroke length. These models are suitable when the operation requires a smaller outside diameter and a lighter fishing assembly.
For larger fishing assemblies, deep wells and heavier workover jobs, models such as BXJ62B, BXJ64B, BXJ70B and BXJ80B provide larger outside diameters, higher tensile load and longer stroke. These models help crews handle more demanding fishing, workover and deep well jarring operations.
If your fishing string uses a special connection or the working condition requires further confirmation, please contact SGPE before ordering. Our team can review your well data, confirm the suitable model and help match the right connection for your operation.
Benefits for Oilfield Fishing and Workover Operations
The BXJ Lubricated Fishing Bumper Sub helps crews apply repeated impact to the stuck point. This action can improve recovery efficiency during stuck pipe, lost tool and downhole fish recovery operations.
The tool supports both downward and upward jarring. Operators can adjust the impact direction according to the downhole condition. This flexibility matters during complex fishing jobs, deep well workover operations and severe jarring applications.
The hydraulic oil chamber also helps the tool move smoothly under repeated impact. It reduces internal wear and supports longer service life in harsh petroleum well environments.
With strong impact performance, easy field operation and a wide model range, the BXJ series gives oilfield crews a reliable tool for difficult fishing and workover jobs.
Common Industry Names for This Tool
Oilfield buyers, drilling engineers and workover service companies may search for this product by different names.
In the field, the BXJ Lubricated Fishing Bumper Sub may also be described as a lubricated fishing bumper sub, oilfield fishing bumper sub, downhole fishing bumper sub, fishing bumper jar, lubricated bumper jar, hydraulic fishing bumper sub, hydraulic fishing bumper jar, downhole jarring tool, workover fishing tool, deep well fishing tool or stuck pipe recovery tool.
Quality, Support and Ordering Information
SGPE focuses on durable downhole tools for oilfield fishing, drilling and workover service. Before quotation, customers can share their operation details with our team, so we can better understand the working condition and recommend a suitable BXJ Lubricated Fishing Bumper Sub model and connection.
To prepare a faster and more accurate quotation, please provide your required model or tool size, order quantity, connection type, well depth, hole size, fishing string size, working pressure, working temperature, expected tensile load, application details, stuck pipe or fishing condition, and any special technical requirements.
With this information, SGPE can review your actual oilfield working conditions, confirm the suitable bumper sub model, check the connection requirement and provide technical communication before order confirmation. This helps customers choose the right tool for fishing, workover, drilling assistance or deep well jarring operations.
Frequently Asked Questions About BXJ Lubricated Fishing Bumper Sub
1. What is a BXJ Lubricated Fishing Bumper Sub?
The BXJ Lubricated Fishing Bumper Sub is a heavy-duty oilfield fishing tool for downhole fishing, stuck pipe recovery, workover service and well intervention.
Crews use it in oil and gas wells to create jarring impact in the fishing string. The impact helps release stuck pipe, stuck tools, lost downhole assemblies and other fish. The hydraulic oil inside the chamber helps the tool move smoothly during repeated jarring cycles.
The BXJ series also works as an oilfield fishing bumper jar, hydraulic fishing bumper sub and downhole jarring tool for demanding petroleum well operations.
2. How does the BXJ Lubricated Fishing Bumper Sub work?
The BXJ bumper sub creates impact through stored energy.
First, the operator applies lifting load to the drill stem. The tool opens to a certain stroke, and the drill stem stores strain energy. Then the operator releases the load. The drill stem moves downward, and the bumper sub quickly returns toward its closed position.
At this moment, the stored energy changes into jarring force. The force travels through the fishing string and acts on the stuck point.
3. What oilfield problems can this fishing bumper sub help solve?
The SGPE BXJ Lubricated Fishing Bumper Sub helps crews handle common fishing and workover problems in oil and gas wells. It can assist with stuck pipe recovery, downhole fish recovery, lost tool recovery, stuck fishing assembly release, releasable fishing tool operation, deep well workover fishing and severe downhole jarring.
When a fishing job needs repeated impact force, the BXJ bumper sub helps the fishing string apply controlled shock to the stuck point. This makes it easier for crews to work on stuck pipe, stuck tools or downhole fish during difficult oilfield fishing operations.
4. Can the BXJ bumper sub provide downward jarring force?
Yes. The BXJ Lubricated Fishing Bumper Sub delivers strong and continuous downward jarring force.
During operation, the tool converts drill stem strain energy and bumper jar movement into downward impact. This impact helps loosen stuck pipe, stuck tools and downhole fish.
Many fishing jobs need downward jarring because the fishing string must strike the stuck point with strong axial force.
5. Can this tool also provide upward jarring force?
Yes. The BXJ Lubricated Fishing Bumper Sub can provide medium and continuous upward jarring force.
This function gives crews more flexibility during complex fishing operations. Some stuck objects need impact from different directions. The BXJ series allows the fishing string to deliver both downward and upward shock, so operators can adjust the operation according to the actual well condition.
6. Why does the BXJ bumper sub contain hydraulic oil?
SGPE fills the inner chamber with hydraulic oil to improve lubrication and reduce friction.
The oil helps moving parts slide more smoothly during repeated jarring cycles. It also helps protect key components from wear. This matters in deep wells, severe fishing jobs and harsh downhole environments.
Because of this structure, many crews choose a hydraulic fishing bumper sub when they need stable operation and longer service life.
7. Is the BXJ Lubricated Fishing Bumper Sub suitable for deep well fishing operations?
Yes. The SGPE BXJ Lubricated Fishing Bumper Sub suits medium-depth and deep oil and gas wells.
SGPE offers models with different outside diameters, stroke lengths and tensile load ratings. For deeper wells and heavier workover jobs, larger models such as BXJ62B, BXJ64B, BXJ70B and BXJ80B provide higher tensile load and longer stroke.
These models help crews handle deep well fishing, heavy fishing strings and severe jarring conditions.
8. What is the difference between a lubricated fishing bumper sub and a common bumper sub?
A lubricated fishing bumper sub contains hydraulic oil inside the chamber. The oil improves lubrication, lowers friction and helps the moving parts work smoothly.
A common bumper sub may not offer the same lubrication support during repeated jarring operations. In harsh downhole conditions, friction can increase wear and shorten tool life.
The SGPE BXJ lubricated design helps reduce this problem and supports more stable performance during continuous fishing and workover service.
9. How should I choose the right BXJ bumper sub model?
You should choose the model according to well depth, hole size, fishing string design and required jarring force.
For smaller fishing strings, models such as BXJ31B, BXJ34B and BXJ36B offer compact tool sizes. For larger fishing assemblies and heavier workover jobs, models such as BXJ62B, BXJ64B, BXJ70B and BXJ80B provide larger sizes and higher tensile load.
To confirm the right model, send SGPE your connection type, expected tensile load, working pressure, working temperature and stuck condition.
10. What sizes, tensile loads and connections does SGPE offer?
SGPE offers BXJ models from BXJ31B to BXJ80B.
The outside diameter ranges from 80 mm to 203 mm. The inside diameter ranges from 25.4 mm to 76.2 mm. The maximum tensile load ranges from 30 tf to 220 tf. All listed models offer 30 MPa sealing pressure.
Available connections include 2 3/8 REG, NC26, NC31, NC38, NC50 and 6 5/8 REG. Contact SGPE if your fishing string requires a specific connection.
11. What information should I provide before requesting a quote?
To get a faster and more accurate quote, please send SGPE your required model or tool size, order quantity, connection type, well depth, hole size, fishing string size, working pressure and temperature, expected tensile load, application details, stuck pipe or fishing condition, and any special technical requirements.
With this information, SGPE can review your actual oilfield working conditions, recommend a suitable BXJ Lubricated Fishing Bumper Sub, confirm the right connection and prepare a more accurate quotation for your fishing, workover or deep well operation.
12. Why choose SGPE as your BXJ Lubricated Fishing Bumper Sub supplier?
SGPE supplies oilfield fishing tools, drilling tools and workover tools for oil and gas well operations.
The SGPE BXJ Lubricated Fishing Bumper Sub offers strong downward jarring force, stable upward impact, hydraulic oil lubrication, a wide model range and reliable performance in harsh downhole conditions.
SGPE also provides model selection support before order confirmation. If you need an oilfield fishing bumper sub manufacturer, downhole jarring tool supplier or hydraulic fishing bumper jar for stuck pipe recovery, SGPE can help you match the right tool to your operation.
Request a Quote from SGPE
Looking for a reliable BXJ Lubricated Fishing Bumper Sub manufacturer for oilfield fishing, stuck pipe recovery, workover or deep well intervention?
SGPE supplies durable downhole fishing tools for severe fishing jobs and harsh petroleum well conditions. Send us your required model, connection type, well condition and order quantity. Our team will help you select the right lubricated fishing bumper sub and provide a competitive quotation.
E-Mail:
info@sgpe.com
