Description
Releasing Spear for Oilfield Fishing and Workover Operations
Internal Fishing Tool for Tubing, Drill Pipe, Casing, and Downhole Fish Retrieval
SGPE Releasing Spear is a rugged internal fishing tool for oil and gas wells. It catches, pulls, and releases hollow fish such as stuck tubing, broken drill pipe, casing sections, and other tubular fish during drilling, workover, well servicing, completion repair, and well intervention operations.
When a downhole fish becomes stuck, the fishing crew needs more than pulling strength. They need secure engagement, stable load transfer, reliable release, and a tool that can handle uncertain wellbore conditions. SGPE Releasing Spear meets these field requirements with a high-strength mandrel, dependable grapple system, simple structure, and smooth release function.
The tool enters the bore of the fish and grips the internal wall. After engagement, the fishing string can apply pulling force, jarring force, or both. Its wide internal contact area helps improve grip stability and reduce concentrated damage to the tubular fish. If the fish cannot move, the operator can release the spear and adjust the fishing plan without leaving the fishing assembly locked inside the fish.
SGPE supplies releasing spears in multiple models for different catch sizes, thread connections, and allowed loads. We also support custom upper box connections and mandrel options to match the customer’s fishing string, rig equipment, well condition, and downhole recovery plan.
Need help selecting the right releasing spear? Send SGPE your fish size, fish I.D., top connection, mandrel type, and well condition. Our team will recommend a suitable model for your oilfield fishing operation.
What Is a Releasing Spear?
A releasing spear is a downhole fishing tool that recovers hollow fish from the inside. Instead of catching the outer surface, it enters the internal bore and grips the inner wall with a grapple. This internal catching method makes the tool suitable for tubing, drill pipe, casing, and other tubular fish with an accessible inside diameter.
Oilfield crews use releasing spears in stuck pipe recovery, workover fishing, wellbore recovery, sidetracking preparation, completion repair, and well intervention projects. The tool works best when the fish has enough internal space for the spear to enter and engage.
The release function gives the operator more control in difficult wells. Sand, scale, corrosion, deformation, differential sticking, or wellbore restriction may prevent the fish from moving. In this situation, the crew can disengage the spear, pull the tool out, and change the recovery method. This flexibility helps reduce secondary sticking risk and supports safer fishing operations.
Key Advantages of SGPE Releasing Spear
Secure Internal Catch
SGPE Releasing Spear grips the inner wall of tubing, drill pipe, casing, or other tubular fish through a reliable grapple system. This internal catch gives the tool a stable hold and allows the fishing string to transfer pulling and jarring force effectively.
Controlled Release in Difficult Wells
Fishing jobs often change after the tool reaches the fish. If the fish remains stuck after pulling or jarring, the operator can activate the release function and disengage the spear. This design protects the fishing string and gives the crew more recovery options.
High-Strength Alloy Steel Mandrel
SGPE manufactures the mandrel from specially heat-treated high-strength alloy steel. This structure supports heavy pulling loads, repeated jarring, and demanding downhole conditions in drilling, workover, and well intervention operations.
Simple Structure, Lower Downhole Risk
The tool mainly consists of a mandrel, grapple, releasing ring, and bull nose nut. This practical structure reduces failure points and lowers the risk of small parts falling into the wellbore.
Suitable for Complete Fishing Assemblies
Operators can run SGPE Releasing Spear with fishing jars, bumper subs, safety joints, pack-off assemblies, internal cutters, and other downhole fishing tools. This compatibility makes it suitable for complete oilfield fishing assemblies and cut-and-pull recovery programs.
Custom Connection Options
SGPE can customize the upper box connection according to the customer’s fishing string and field equipment. Common options include NC and REG thread connections. Customers can also discuss special connection requirements before production.
Oilfield Applications
SGPE Releasing Spear supports internal fish recovery in many oil and gas well operations. It helps crews improve tubular retrieval efficiency and reduce non-productive time during downhole fishing and wellbore recovery work.
Typical applications include:
- Retrieving broken drill pipe during drilling operations
- Fishing stuck tubing during oilfield workover jobs
- Recovering casing sections from oil and gas wells
- Pulling hollow downhole fish after wellbore accidents
- Supporting stuck pipe recovery in vertical, deviated, and directional wells
- Working with pack-off assemblies for circulation or sealing during fishing jobs
- Running with internal cutters in cut-and-pull fishing programs
- Supporting well servicing, completion repair, and well intervention operations
- Recovering tubular fish in onshore and offshore oilfield environments
- Reducing downtime during wellbore recovery and downhole fishing operations
Before selecting the tool, operators should confirm the fish internal diameter, fish weight, deformation condition, connection type, well depth, and expected pulling load.
Product Construction
SGPE Releasing Spear uses a straightforward structure that supports catching, pulling, guiding, and releasing during the fishing operation.
| Component | Function |
|---|---|
| Mandrel | Carries the pulling load and transfers axial force through the fishing string |
| Grapple | Engages the internal wall of the fish and provides the catching force |
| Releasing Ring | Supports controlled release when the fish cannot be pulled |
| Bull Nose Nut | Guides the spear into the fish and protects the lower end of the tool |
The mandrel uses specially heat-treated high-strength alloy steel. This material and heat-treatment process help the spear maintain strength under heavy pulling, jarring impact, and harsh downhole conditions.
SGPE offers two main mandrel types:
| Mandrel Type | Feature | Recommended Oilfield Use |
|---|---|---|
| Flush Type Mandrel | Enters completely into the fish | Suitable when the spear needs deeper internal entry and full engagement |
| Shoulder Type Mandrel | Provides a positive landing position on top of the fish | Suitable when the fishing program requires controlled placement and clear positioning |
The flush type mandrel fits jobs that require deeper entry into the fish. The shoulder type mandrel helps the operator control the landing position and improve placement accuracy. SGPE can recommend a suitable mandrel type according to the actual fish condition and wellsite operation data.
How SGPE Releasing Spear Works
During operation, the fishing string runs the releasing spear into the wellbore and guides it into the bore of the fish. The bull nose nut helps the tool enter smoothly and protects the lower end of the spear.
Once the tool reaches the correct position, the grapple engages the internal wall of the fish. As the operator applies upward force, the grapple creates a firm internal hold. The fishing string can then pull, jar, or combine both actions to recover the fish.
If the fish remains stuck, the release mechanism allows the operator to disengage the spear. The crew can pull the tool out and adjust the recovery plan. This working principle makes SGPE Releasing Spear a practical internal fishing tool for oil and gas wells that require strong grip, stable load transfer, and dependable release control.
Specifications – SGPE Releasing Spear
| Model | Mandrel O.D. (mm) | Catch Size (mm) | Thread Connection | Allowed Load (kN) |
|---|---|---|---|---|
| LM-T60 | 86 | 47.4–51.8 | NC26 | 270 |
| LM-T73 | 105 | 57.4–62 | NC31 | 380 |
| LM-T89 | 121 | 70–77.8 | NC38 | 650 |
| LM-T102 | 121 | 82–90.1 | NC38 | 800 |
| LM-T114 | 121 | 92.4–103.9 | NC38 | 1000 |
| LM-T127 | 165 | 102–115.8 | NC50 | 1300 |
| LM-T140 | 165 | 118.6–127.3 | NC50 | 1500 |
| LM-T168 | 165 | 140–153.7 | NC50 | 2200 |
| LM-T178 | 165 | 150.4–166.1 | NC50 | 2200 |
| LM-T194 | 165 | 168.3–178.5 | NC50 | 2300 |
| LM-T219 | 197 | 190.8–205.7 | 6 5/8 REG | 2300 |
| LM-T245 | 197 | 216.8–228.7 | 6 5/8 REG | 2500 |
| LM-T273 | 197 | 240–258.9 | 6 5/8 REG | 2500 |
| LM-T340 | 197 | 313.6–323 | 6 5/8 REG | 2500 |
SGPE can discuss customized catch sizes, special thread connections, and matching oilfield fishing tool assemblies according to customer requirements.
How to Select the Right Releasing Spear
Correct tool selection improves catching performance, reduces slipping risk, and supports safer fishing operations. The releasing spear should match the actual fish size, internal diameter, fish condition, well depth, and expected pulling load.
| Selection Factor | Why It Matters |
|---|---|
| Fish I.D. and catch size | Ensures the grapple can engage the internal wall correctly |
| Fish type | Drill pipe, tubing, casing, and other tubular fish may require different models |
| Fish condition | Deformation, corrosion, scale, or wear can affect gripping performance |
| Well depth and pulling load | Deeper wells and heavier fish require higher load capacity |
| Top connection | The spear must match the fishing string and rig equipment |
| Mandrel type | Flush or shoulder type depends on the fishing program |
| Matching tools | Fishing jars, bumper subs, pack-off tools, or cutters may affect assembly design |
For accurate selection, customers should provide real fish dimensions instead of only nominal pipe size. If the fish has deformation, heavy scale, corrosion, or an irregular internal bore, please share these details before ordering. SGPE can review the working condition and recommend a suitable releasing spear model.
Ordering Information
To help SGPE recommend the correct releasing spear and prepare an accurate quotation, please provide the following details:
- Releasing spear model
- Required top connection
- Exact size and weight of the fish
- Fish type, such as tubing, drill pipe, casing, or other tubular fish
- Fish internal diameter or catch size requirement
- Flush type or shoulder type mandrel
- Well depth and expected pulling load, if available
- Downhole condition, such as vertical well, deviated well, or offshore well
- Matching tools, such as fishing jar, bumper sub, pack-off assembly, or internal cutter
- Any special requirement for connection, material, or fishing assembly
Clear ordering information helps reduce model selection mistakes, improve quotation efficiency, and support smoother communication before production.
Why Choose SGPE Releasing Spear?
SGPE focuses on practical oilfield equipment for drilling, workover, well servicing, and downhole fishing operations. Our releasing spear combines strong internal engagement, reliable release action, and rugged construction for demanding oil and gas well conditions.
Oilfield buyers need more than a standard tool number. They need the right catch size, correct connection, suitable mandrel type, and enough load capacity for the fishing job. SGPE reviews these details and helps customers match the releasing spear to the actual wellsite requirement.
SGPE advantages include:
- Multiple models for different tubular fish sizes
- High-strength alloy steel construction
- Custom upper box connection options
- Flush type and shoulder type mandrel choices
- Support for complete oilfield fishing tool assemblies
- Technical communication before production
- Dimensional checking and connection confirmation
- Stable supply for drilling, workover, and well intervention projects
- Practical packaging and delivery support for export orders
Before shipment, SGPE can check key dimensions, thread connection, and assembly requirements to help the tool match the customer’s fishing string and field operation plan.
Whether you need a single releasing spear or a complete downhole fishing tool package, SGPE can provide a suitable solution for your oilfield project.
Related Oilfield Fishing Tools
To support complete fishing and recovery programs, customers often combine the releasing spear with other downhole tools, such as:
- Fishing Jar
- Bumper Sub
- Safety Joint
- Internal Cutter
- Pack-off Assembly
- Overshot
- Taper Tap
- Die Collar
- Reversing Spear
- Junk Basket
These internal links can help buyers explore matching tools and also strengthen the SEO structure of the oilfield fishing tools category.
Request a Quote
Looking for a reliable releasing spear manufacturer and supplier for oilfield fishing operations?
Send SGPE your fish size, fish internal diameter, top connection, mandrel type, and well condition. Our team will help you select a suitable releasing spear model and prepare a quotation for your drilling, workover, or well intervention project.
To speed up the quotation process, please include the fish type, required thread connection, expected pulling load, and any matching tools in the fishing assembly.
FAQ – Releasing Spear for Oilfield Fishing
1. What does a releasing spear do in oil and gas wells?
A releasing spear catches and retrieves hollow fish from inside the wellbore. Oilfield crews use it to recover stuck tubing, broken drill pipe, casing sections, and other tubular fish during drilling, workover, well servicing, completion repair, and well intervention operations. It grips the internal wall of the fish and helps the fishing string apply pulling or jarring force.
2. How does an oilfield releasing spear catch the fish?
The releasing spear enters the bore of the fish and uses its grapple to grip the inner wall. After the grapple engages, the fishing string can pull, jar, or combine both actions to recover the fish. This internal catching method gives the tool a stable hold and helps reduce concentrated damage to the tubular fish.
3. What types of downhole fish can SGPE Releasing Spear retrieve?
SGPE Releasing Spear can retrieve many hollow downhole fish, including tubing, drill pipe, casing, and similar tubular components. It works best when the fish has an accessible internal bore. Before selection, customers should confirm the fish internal diameter, fish weight, deformation condition, and expected pulling load.
4. When should operators choose a releasing spear instead of an external fishing tool?
Operators usually choose a releasing spear when the fish has a clear internal bore and an internal catch offers better access. This tool works well for tubing fishing, drill pipe recovery, casing retrieval, and stuck pipe recovery. It also helps when external catching space remains limited or when the crew wants to reduce outside surface damage.
5. Can the releasing spear disengage if the fish cannot move?
Yes. The operator can activate the release function and disengage the spear when the fish remains stuck. This feature gives the crew more control in difficult wells, especially when sand, scale, corrosion, deformation, or wellbore restriction prevents movement. It also helps reduce the risk of locking the fishing assembly in the fish.
6. What is the difference between a flush type mandrel and a shoulder type mandrel?
A flush type mandrel enters completely into the fish and supports deeper internal engagement. A shoulder type mandrel lands on top of the fish and helps the operator control the tool position more clearly. The right choice depends on the fish condition, internal bore, fishing plan, and required placement accuracy.
7. Can SGPE customize the top connection of the releasing spear?
Yes. SGPE can customize the upper box connection to match the customer’s fishing string, rig equipment, and field operation requirements. Common connection options include NC and REG thread connections. Customers can also share special connection requirements before production for technical confirmation.
8. Can SGPE Releasing Spear work with other downhole fishing tools?
Yes. Operators can run SGPE Releasing Spear with fishing jars, bumper subs, safety joints, pack-off assemblies, internal cutters, and other downhole fishing tools. This makes it suitable for complete oilfield fishing assemblies, cut-and-pull recovery programs, tubing recovery jobs, and complex wellbore retrieval operations.
9. How do I choose the correct releasing spear model?
You should match the catch size with the actual fish internal diameter. You should also consider fish type, fish weight, allowed load, top connection, mandrel type, well depth, and downhole condition. For better accuracy, provide real fish dimensions instead of only giving the nominal pipe size.
10. What information should I provide for a releasing spear quotation?
Please provide the fish type, fish size, fish internal diameter, fish weight, required top connection, mandrel type, well depth, and expected pulling load. If the fish has corrosion, scale, deformation, or an irregular bore, include those details as well. This information helps SGPE recommend a suitable oilfield releasing spear and prepare a more accurate quotation.
11. Can SGPE Releasing Spear support offshore and onshore oilfield operations?
Yes. SGPE Releasing Spear can support both onshore and offshore oilfield fishing operations. It suits drilling, workover, well servicing, and well intervention projects where crews need reliable internal fish retrieval. For offshore projects, customers should confirm connection requirements, fish data, load requirements, and matching tools before ordering.
12. Can SGPE supply complete oilfield fishing tool assemblies?
SGPE can discuss complete fishing tool requirements according to the customer’s well condition and recovery plan. A typical assembly may include a releasing spear, fishing jar, bumper sub, safety joint, pack-off assembly, internal cutter, and related downhole fishing tools. SGPE helps customers match the tool configuration to the actual fishing job, not just a model number.
E-Mail:
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