CSJ Type Super Fishing Jar

Hydraulic Super Fishing Jar for Oilfield Drilling, Workover Fishing, Well Intervention, and Stuck Pipe Recovery

The SGPE CSJ Type Super Fishing Jar helps oilfield crews release stuck drill strings, stuck tubing, bottom hole assemblies, fishing tools, and downhole fish. SGPE builds this high-force hydraulic fishing jar for oil and gas wells where crews need strong upward impact, stable hydraulic control, torque transmission, mud circulation, and fast resetting.

A stuck pipe or stuck tool can stop drilling, workover, or well intervention work within minutes. It can increase rig time, raise operating costs, and put pressure on the whole crew. The CSJ jar delivers a powerful upward blow to the stuck point and improves the chance of releasing stuck drill pipe, drill collars, stabilizers, tubing, packers, bottom hole assemblies, and fishing tools.

Compared with ordinary jars of the same specification, this super fishing jar provides larger jarring force, compact structure, reliable performance, and simple field operation. It suits demanding oilfield environments where operators need repeated upward jarring and dependable downhole performance.

Request a Quote | Get Technical Datasheet | Ask for Model Selection Support

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Key Benefits at a Glance

The CSJ jar creates strong upward impact for stuck pipe recovery. Its hydraulic delay mechanism controls energy release and gives the drill string enough time to store elastic energy before impact.

The compact body fits drilling strings, workover strings, and fishing strings. The spline structure transmits torque and allows drill string rotation during the operation. This design gives crews both upward jarring force and rotational support during fishing and recovery work.

The tool also supports mud circulation at the bottom of the well. This helps crews clean the hole, carry cuttings, cool the tool string, and maintain better downhole conditions.

SGPE supplies a wide model range from CSJ31B to CSJ90B. The outside diameter ranges from 80 mm to 229 mm, and the tensile load ranges from 300 kN to 2200 kN. Multiple API connections help customers match different oilfield assemblies for drilling, workover fishing, well intervention, stuck pipe release, and downhole fish recovery.

Need help choosing the right model?
Send SGPE your well size, hole size, fishing string size, API connection, required jarring force, expected downhole tension, and stuck point condition. Our team can help match a suitable CSJ fishing jar to your oilfield operation.

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Product Overview

The CSJ Type Super Fishing Jar is an upward hydraulic jarring tool for oilfield drilling, workover fishing, well intervention, and downhole fishing operations. Crews usually install it in a fishing string or drilling string when they need strong upward impact to release stuck downhole equipment.

During operation, the tool stores elastic energy in the drill string through hydraulic damping. Then it releases that energy quickly and creates a sudden upward dynamic load. This impact acts directly on the stuck point and helps loosen the fish, drill string, tubing, bottom hole assembly, or other stuck downhole tools.

SGPE supplies a full range of CSJ models, including CSJ31B, CSJ34B, CSJ36B, CSJ42C, CSJ44B, CSJ46B, CSJ62B, CSJ64B, CSJ70B, CSJ76B, CSJ80B, and CSJ90B. These models cover different outside diameters, inside diameters, strokes, tensile loads, torque capacities, API connections, and oilfield working requirements.

This hydraulic jar works well in oilfield fishing tool assemblies, drilling string jarring operations, workover fishing jobs, stuck pipe release operations, well intervention tool recovery, and heavy-duty downhole fishing applications. With strong upward jarring force, reliable hydraulic action, compact structure, and easy resetting, it gives oilfield crews a practical solution for difficult recovery jobs.

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Key Technical Highlights

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Why Choose SGPE CSJ Type Super Fishing Jar?

Strong Upward Impact for Difficult Fishing Jobs

The CSJ jar generates a larger upward impact than many standard fishing jars of the same size. This stronger blow helps crews release stuck drill pipe, drill collars, stabilizers, downhole motors, tubing, packers, fishing tools, and other stuck equipment.

In difficult stuck pipe recovery jobs, repeated upward impact can save valuable rig time and reduce non-productive time. For drilling and workover teams, this oilfield fishing jar provides a practical tool for urgent recovery operations.

Reliable Hydraulic Delay Mechanism

The hydraulic delay system controls the jarring action. When the operator pulls the drill string upward, the tapered piston and sealing body create damping resistance. This delay gives the drill string enough time to store elastic energy.

Once the piston reaches the release bore, the hydraulic oil unloads quickly. The drill string then contracts and creates a powerful upward blow.

Compact Structure for Oilfield Strings

SGPE designs the tool with a compact body and practical internal structure. It fits drilling strings, fishing strings, and workover assemblies where load capacity, torque, mud circulation, and downhole pressure all matter.

Easy Operation and Fast Resetting

Oilfield fishing jobs often require repeated attempts. This hydraulic fishing jar allows easy adjustment, closing, and resetting, so crews can continue jarring without complicated handling.

Torque Transmission Through Spline Structure

The spline structure transmits torque during operation. It allows the drill string to rotate while the jar remains in the fishing assembly. Rotation can improve releasing efficiency, tool engagement, and downhole control.

Mud Circulation Support

The tool supports mud circulation at the bottom of the well. This function helps clean the hole, carry cuttings, cool the tool string, and maintain better downhole conditions during fishing and recovery operations.

Built for Consecutive Jarring

After one upward jarring action, the operator can reset the tool and prepare for the next impact. This makes the CSJ jar suitable for repeated jarring in workover fishing, stuck pipe release, and heavy-duty oilfield fishing operations.

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Working Principle of Hydraulic Super Fishing Jar

The CSJ Type Super Fishing Jar creates upward jarring action through a hydraulic mechanism.

When the operator raises the drill tool connected above the jar, the drill string stretches and stores elastic energy. At the same time, the tapered piston and sealing body create hydraulic damping inside the tool. This damping slows the piston movement and gives the string enough time to build energy.

As the tapered piston moves to the release bore, the pressurized hydraulic oil unloads instantly. The drill string then contracts and produces a strong upward dynamic load. This impact acts directly on the stuck drill string, stuck tubing, stuck BHA, stuck fishing tool, or downhole fish.

SGPE adds a reliable impact working surface inside the structure. This surface helps the jar generate large upward jarring force while stopping the piston firmly. As a result, the tool delivers stable impact energy and supports efficient stuck equipment recovery in oil and gas wells.

The spline also transmits torque, so crews can rotate the drill string and maintain mud circulation during fishing and stuck pipe recovery jobs.

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Main Oilfield Applications of CSJ Type Super Fishing Jar

The SGPE CSJ Type Super Fishing Jar supports a wide range of petroleum industry operations. Oilfield crews can use it in oil and gas well drilling, oilfield fishing, workover fishing, well intervention, stuck pipe release, and general oilfield repair and maintenance operations.

This hydraulic fishing jar also helps with stuck drill string recovery, stuck bottom hole assembly recovery, stuck drill collar and stabilizer recovery, stuck tubing recovery, and downhole fishing tool recovery. When crews need repeated upward impact, the tool can work in fishing string jarring, drill string jarring, heavy-duty upward jarring, and downhole fish releasing operations.

With strong upward jarring force, hydraulic delay action, torque transmission, and mud circulation support, the CSJ jar helps oilfield operators handle stuck pipe, stuck drill collars, stuck tubing, stuck fishing tools, stuck BHAs, and other difficult downhole stuck conditions.

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Typical Oilfield Working Conditions

Oil and Gas Drilling Operations

During drilling, stuck pipe, stuck drill collars, stabilizers, and bottom hole assemblies can stop the operation. The CSJ jar helps crews apply strong upward impact and recover stuck tools more efficiently.

Workover Fishing Operations

In workover jobs, crews often need to recover stuck tubing, packers, fishing tools, and other downhole equipment. This hydraulic jar creates repeated upward jarring force and supports efficient tool recovery.

Well Intervention Operations

During well intervention, operators may face stuck downhole tools, restrictions, tight spots, or difficult fishing conditions. The tool gives crews a reliable upward jarring option for releasing stuck equipment.

Stuck Pipe Recovery

The jar helps handle stuck pipe caused by differential sticking, key seats, cuttings accumulation, wellbore instability, tight spots, or mechanical obstruction. Its hydraulic delay system and strong impact force support effective stuck pipe release.

Complete Fishing Tool Assemblies

Operators can run this super fishing jar with overshots, spears, mills, junk baskets, safety joints, bumper subs, drill collars, stabilizers, and other downhole fishing tools. It adds powerful upward jarring capability to the complete fishing string.

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Product Features and Technical Advantages

High Upward Impact Energy

The tool converts stored drill string energy into a strong upward jarring force. This impact improves the chance of releasing stuck downhole equipment and can help shorten fishing operation time.

Hydraulic Control System

The hydraulic delay system gives the drill string enough time to store energy before release. This controlled release makes the jarring process stable and effective.

Strong Tensile Capacity

Different CSJ models provide tensile load ratings from 300 kN to 2200 kN. This wide range helps customers choose a suitable model for light-duty, medium-duty, and heavy-duty oilfield fishing operations.

Multiple API Connections

SGPE offers common API connections, including 2 3/8 REG, NC26, NC31, NC38, NC50, 6 5/8 REG, and 7 5/8 REG. These connection options help customers match different drilling strings, fishing strings, and workover assemblies.

Wide Size Range

The CSJ Type Super Fishing Jar covers outside diameters from 80 mm to 229 mm. This size range gives oilfield customers more flexibility for different wellbore sizes and downhole tool assemblies.

High Working Temperature

All listed CSJ models support a maximum working temperature of 150°C. This temperature rating suits many oil and gas well environments.

Stable Sealing Pressure

Each model has a sealing pressure rating of 30 MPa. This rating supports reliable hydraulic performance during oilfield fishing and jarring operations.

Easy Reset for Repeated Jarring

The tool allows convenient closing and resetting after each jarring action. This helps the crew continue upward jarring when the stuck point needs multiple impacts.

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Specifications of CSJ Type Super Fishing Jar

Request a Quote | Download Full Specification Sheet | Contact SGPE for Model Selection

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Model Selection Guide

SGPE offers different CSJ Type Super Fishing Jar models to match different well sizes, fishing strings, workover strings, and downhole load requirements. Customers can choose a suitable model according to the actual oilfield operating condition, required upward jarring force, API connection type, and complete tool assembly design.

For smaller oilfield fishing assemblies, CSJ31B, CSJ34B, and CSJ36B provide compact dimensions and dependable jarring capacity. These models work well with smaller fishing strings and operations that require a compact hydraulic fishing jar for limited wellbore space or lighter downhole loads.

For medium-duty drilling, workover fishing, and stuck tool recovery jobs, CSJ42C, CSJ44B, and CSJ46B offer higher tensile capacity and larger API connections. These models suit customers who need a stronger hydraulic jar while still maintaining good compatibility with common oilfield drilling strings and workover assemblies.

For heavy-duty stuck pipe recovery and demanding oilfield fishing operations, CSJ62B, CSJ64B, CSJ70B, CSJ76B, CSJ80B, and CSJ90B provide stronger tensile load, higher torque capacity, and larger connection sizes. These models fit more challenging downhole conditions where crews need greater upward jarring force, reliable torque transmission, and strong structural performance.

When selecting a model, customers should consider the oil or gas well size, hole size, fishing string or drilling string size, required upward jarring force, tensile load requirement, maximum downhole tension, torque requirement, API connection type, well depth, well condition, mud circulation requirement, stuck point condition, and complete downhole tool assembly design.

SGPE can review your oilfield operating parameters and recommend a suitable CSJ fishing jar model for your drilling, workover, stuck pipe recovery, or downhole fishing operation.

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Need Help Selecting the Right CSJ Fishing Jar?

Choosing the correct hydraulic fishing jar can improve fishing efficiency and reduce unnecessary operation risk. To help SGPE recommend a suitable model, customers can share their well size, hole size, fishing string size, existing connection type, required tensile load, expected downhole tension, torque requirement, working temperature, stuck pipe or fish condition, and planned fishing tool assembly.

With this information, SGPE can better understand the actual oilfield working condition and match the jar to the customer’s drilling string, fishing string, or workover assembly. This helps improve tool compatibility and supports safer, more efficient stuck pipe recovery and downhole fishing operations.

Contact SGPE to request a quote, get model selection support, or ask for technical details about the CSJ Type Super Fishing Jar.

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Quality, Inspection, and Supply Support

SGPE focuses on oilfield machinery, drilling tools, and downhole fishing tools for petroleum industry customers. We support drilling contractors, oilfield service companies, workover teams, and petroleum equipment distributors with practical fishing tool solutions for oilfield drilling, workover fishing, well intervention, and stuck pipe recovery operations.

To support reliable field use, SGPE provides model selection support based on actual oilfield parameters. Our team can help customers match suitable CSJ models according to well size, fishing string size, required jarring force, downhole tension, torque requirement, and API connection type.

Before production or delivery, SGPE can also confirm the connection details and check key dimensions to help the tool match the customer’s drilling string, fishing string, or workover assembly.

SGPE keeps close technical communication with customers during model selection and order preparation. This helps reduce selection errors and improves tool compatibility in field operations. Before shipment, SGPE can check key dimensions, confirm connection details, and prepare suitable export packing according to the order requirements. Customers can also request technical drawings, specification confirmation, and connection details before order confirmation.

With multiple CSJ models and a wide range of oilfield fishing tools available, SGPE can offer dependable supply support for customers who need a reliable hydraulic fishing jar supplier and complete petroleum downhole fishing tool solutions.

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Advantages for Oilfield Buyers

For Drilling Contractors

The CSJ jar helps reduce downtime caused by stuck drill strings and stuck bottom hole assemblies. Its strong upward impact can improve recovery efficiency and reduce the risk of long fishing operations.

For Oilfield Service Companies

Service companies can use different CSJ models to meet different oilfield customer requirements. The tool’s reliable structure supports repeated field use and helps improve service efficiency.

For Workover Teams

Workover crews can use this super fishing jar to release stuck tubing, stuck tools, and other downhole equipment. The easy reset function supports consecutive jarring during difficult recovery jobs.

For Petroleum Equipment Distributors

SGPE offers a wide range of oilfield fishing tools and drilling tools. Distributors can source CSJ Type Super Fishing Jars together with overshots, spears, mills, junk baskets, safety joints, bumper subs, and other downhole fishing equipment.

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Related Oilfield Fishing Tools from SGPE

To build a complete fishing string, customers often use the CSJ Type Super Fishing Jar with other downhole fishing tools. SGPE can also support oilfield buyers with tools such as overshots, spears, bumper subs, safety joints, mills, junk baskets, fishing magnets, and other petroleum drilling and fishing tools.

For complete oilfield fishing tool solutions, customers can contact SGPE with their well condition, fishing target, string design, and connection requirements.

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Why Buy CSJ Type Super Fishing Jar from SGPE?

Choosing the right oilfield fishing tool supplier matters because downhole fishing jobs often involve high cost, high pressure, and urgent recovery needs. SGPE provides practical downhole tool solutions for oil and gas drilling, workover, well intervention, and fishing operations, helping customers select suitable tools for different oilfield conditions.

When customers choose SGPE, they can get multiple CSJ fishing jar models for light-duty, medium-duty, and heavy-duty applications. SGPE also offers reliable hydraulic jarring performance, strong upward impact force, and API connection options to match different drilling strings, fishing strings, and workover assemblies. In addition, the company provides practical model selection support, dimensional checking before delivery, export packing support, and competitive factory supply.

SGPE understands the challenges of stuck pipe recovery and downhole fishing operations. Therefore, the company focuses on durable structure, strong impact output, simple field operation, and dependable performance. For customers who need a reliable hydraulic fishing jar supplier, SGPE can provide CSJ Type Super Fishing Jar models as well as complete petroleum downhole fishing tool solutions for oilfield drilling and fishing applications.

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Frequently Asked Questions about CSJ Type Super Fishing Jar

1. What is a CSJ Type Super Fishing Jar?

A CSJ Type Super Fishing Jar is a high-force hydraulic upward jarring tool for oil and gas well operations. Oilfield crews use it in drilling strings, fishing strings, and workover assemblies to release stuck drill strings, stuck tubing, stuck bottom hole assemblies, stuck fishing tools, and downhole fish.

The tool applies strong upward impact to the stuck point. Therefore, it works as an important oilfield fishing jar, downhole jarring tool, and stuck pipe recovery tool in petroleum drilling, workover fishing, well intervention, and downhole fishing operations.

2. How does the CSJ Type Super Fishing Jar work?

The CSJ jar works through a hydraulic delay and release mechanism. When the operator pulls the drill string upward, the string stretches and stores elastic energy. At the same time, the tapered piston and sealing body create hydraulic damping inside the tool.

As the piston moves to the release bore, the hydraulic oil unloads quickly. Then the drill string contracts and creates a strong upward jarring force. This impact acts on the stuck pipe, stuck tubing, stuck BHA, stuck fishing tool, or downhole fish and helps release it from the stuck point.

3. What problems can this hydraulic fishing jar help solve?

This hydraulic fishing jar helps solve many downhole sticking and fishing problems in oilfield operations. It can help release stuck drill pipe, drill collars, stabilizers, downhole motors, tubing, packers, fishing tools, and other stuck equipment.

Crews often use it when they face tight spots, key seats, differential sticking, cuttings accumulation, wellbore instability, mechanical obstruction, or difficult stuck pipe conditions. Because the tool can deliver repeated upward impact, it helps improve the chance of successful stuck pipe recovery and downhole tool recovery.

4. Why choose a CSJ Type Super Fishing Jar instead of a standard fishing jar?

The CSJ jar provides larger upward jarring force than many standard fishing jars with the same specification. This stronger impact helps the crew handle difficult stuck pipe recovery, heavy-duty workover fishing, and demanding downhole fishing operations.

In addition, this super fishing jar offers hydraulic delay control, compact structure, spline torque transmission, mud circulation support, and easy resetting. These features help operators perform consecutive jarring actions with better efficiency and less complicated handling.

5. Where can this oilfield fishing jar be used?

This oilfield fishing jar works in oil and gas well drilling, workover fishing, well intervention, stuck pipe recovery, downhole fish releasing, and oilfield repair operations. Operators can install it in a fishing string or drilling string when they need strong upward impact.

It also works with common downhole fishing tool assemblies. For example, crews can run it with overshots, spears, mills, junk baskets, safety joints, bumper subs, drill collars, stabilizers, and other oilfield fishing tools.

6. Can the CSJ Type Super Fishing Jar help with stuck pipe recovery?

Yes. The tool helps with stuck pipe recovery by creating a strong upward jarring force at the stuck point. When the drill string stores enough elastic energy, the hydraulic mechanism releases that energy quickly and creates a powerful upward impact.

This action can help loosen stuck drill pipe, stuck drill collars, stuck stabilizers, stuck tubing, and stuck bottom hole assemblies. In many oilfield fishing jobs, repeated upward jarring can reduce fishing time and improve recovery efficiency.

7. Can this super fishing jar transmit torque during operation?

Yes. The CSJ Type Super Fishing Jar uses a spline structure to transmit torque. This design allows the drill string to rotate while the tool stays in the fishing or drilling assembly.

Torque transmission matters in many oilfield fishing operations because rotation can help release stuck tools, improve contact with the fish, and support better downhole control. Therefore, this tool gives the crew both upward jarring force and rotational support during stuck pipe recovery and workover fishing jobs.

8. Does the CSJ Type Super Fishing Jar support mud circulation?

Yes. The tool supports mud circulation at the bottom of the well. This function helps the crew clean the hole, carry cuttings, cool the tool string, and maintain better downhole conditions during fishing operations.

Mud circulation also helps when crews run the jar with other downhole fishing tools. In stuck pipe recovery, workover fishing, and oilfield drilling operations, circulation can improve operating stability and help the crew manage difficult wellbore conditions.

9. What models of CSJ Type Super Fishing Jar does SGPE supply?

SGPE supplies a full range of CSJ models, including CSJ31B, CSJ34B, CSJ36B, CSJ42C, CSJ44B, CSJ46B, CSJ62B, CSJ64B, CSJ70B, CSJ76B, CSJ80B, and CSJ90B.

These models cover outside diameters from 80 mm to 229 mm, strokes from 298 mm to 330 mm, tensile loads from 300 kN to 2200 kN, and maximum working torque from 3 kN·m to 25 kN·m. This wide model range helps customers choose a suitable hydraulic fishing jar for light-duty, medium-duty, and heavy-duty oilfield fishing operations.

10. What API connections are available for this hydraulic fishing jar?

SGPE offers several common API connections for the CSJ Type Super Fishing Jar, including 2 3/8 REG, NC26, NC31, NC38, NC50, 6 5/8 REG, and 7 5/8 REG. Different models use different connection sizes.

These connection options help customers match different drilling strings, fishing strings, workover strings, and downhole tool assemblies. Before ordering, customers can send SGPE their existing connection type, string size, and tool assembly design. Then SGPE can help confirm a suitable model.

11. How should I choose the right CSJ Type Super Fishing Jar model?

To choose the right model, customers should consider the oil or gas well size, hole size, fishing string size, API connection, required tensile load, expected downhole tension, working torque, working temperature, and stuck point condition.

Customers should also consider the complete fishing assembly, including overshots, spears, mills, bumper subs, safety joints, drill collars, and stabilizers. SGPE can help recommend a suitable model after receiving your well condition, fishing string details, connection type, and required upward jarring force.

12. Why buy CSJ Type Super Fishing Jar from SGPE?

SGPE supplies hydraulic fishing jars, oilfield fishing tools, drilling tools, and downhole tool solutions for petroleum industry customers. We support drilling contractors, oilfield service companies, workover teams, and petroleum equipment distributors with practical model selection and supply support.

When customers choose SGPE, they can get multiple CSJ models, API connection matching support, dimensional checking before delivery, technical communication for fishing assemblies, export packing support, and competitive factory supply. If you need a reliable hydraulic fishing jar supplier for oilfield drilling, workover fishing, well intervention, or stuck pipe recovery, SGPE can provide suitable products and technical support.

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Request a Quote for CSJ Type Super Fishing Jar

SGPE supplies the CSJ Type Super Fishing Jar for oilfield drilling, workover fishing, well intervention, stuck pipe recovery, and downhole fishing operations. Whether you need a compact hydraulic fishing jar for light-duty oilfield work or a heavy-duty super fishing jar for demanding stuck pipe recovery, SGPE can help you select a suitable model.

To get an accurate quotation, please share your well condition, fishing string size, connection type, required jarring force, expected downhole tension, and planned tool assembly. With this information, SGPE can recommend the right CSJ model and provide technical data, model selection support, price details, and delivery information.

Contact SGPE today to request a quote for the CSJ Type Super Fishing Jar.