Description
Lifting-Lowering and Releasing Overshot for Oilfield Fishing Operations
Non-Rotating Releasing Overshot for Tubing, Drill Pipe, and Stuck Drill String Recovery Inside Casing
The SGPE Lifting-Lowering and Releasing Overshot is a non-rotating oilfield fishing tool for catching, lifting, lowering, and releasing fractured tubing, broken drill pipe, stuck drill strings, and other tubular fish inside casing.
Oilfield crews use this tool in drilling, workover, casing fishing, well intervention, and downhole recovery operations. It works through controlled up-and-down movement from the surface, so operators do not need to rotate the drill string during catching or releasing.
When the stuck tubular cannot move and the fishing job cannot continue, the operator can release the downhole fish and retrieve the overshot by bumping down the string and picking up directly. This simple mechanical action helps reduce fishing risk, protect the tool, and save rig time.
Need the right model for your well? Send SGPE your fish O.D., casing size, connection type, required tool O.D., and well condition. Our team will help you choose the suitable overshot and provide a fast quotation.
Quick Navigation
- Product Overview
- Key Features and Benefits
- Typical Oilfield Applications
- When to Use This Tool
- Structure
- Working Principle
- Technical Specifications
- How to Select the Right Model
- Why Choose SGPE
- FAQ
- Request a Quote
Product Overview
The Lifting-Lowering and Releasing Overshot helps oilfield crews recover downhole tubular fish inside casing. It handles fractured tubing, damaged drill pipe, stuck drill strings, and similar broken tubulars during difficult wellbore fishing operations.
Many conventional fishing overshots require rotation. In real wellsite conditions, rotation may increase torque, damage the fish, or fail because of casing restrictions, stuck pipe, well deviation, sand, scale, or downhole debris.
SGPE solves this problem with a non-rotating releasing overshot. The tool uses a mechanical track groove system to switch between the fishing position and the releasing position. Operators control this action from the surface by lifting and lowering the string.
This design gives drilling contractors, workover crews, oilfield service companies, and well intervention teams a practical solution for stuck tubular recovery inside casing.
Key Features and Benefits
Non-Rotating Catching and Releasing
The tool catches and releases the downhole fish through axial movement. Operators do not need drill string rotation, so they can work with better control in restricted casing, deviated wells, and unstable wellbore conditions.
Easy Release When Fishing Cannot Continue
If the tubular fish becomes heavily stuck, the operator can release it and recover the overshot by bumping down and picking up. This feature helps reduce the chance of leaving the fishing tool in the well.
Strong Grip on Tubular Fish
The slip has internal gripping threads that engage the fish firmly. The guide leads the fish into the slip smoothly, which improves catching accuracy and supports stable fishing performance.
Suitable for Common Oilfield Fish
The overshot works with fractured tubing, broken tubing, drill pipe, stuck drill strings, and other tubular fish commonly found in oil and gas drilling and workover operations.
Simple Wellsite Operation
Crews control the tool from the surface through lifting and lowering. This straightforward operation helps reduce downhole complexity and supports faster decisions during fishing jobs.
Durable Structure for Downhole Conditions
SGPE builds the tool with a strong top sub, bowl, guide sleeve, joint sleeve, roller pin, slip, and guide. This structure supports demanding fishing work in oil and gas wells.
Multiple Standard Catch Sizes
SGPE offers standard models for common oilfield tubular sizes, including 1.9 in, 2 3/8 in, 2 7/8 in, 3 1/2 in, and 4 1/2 in catch sizes.
Typical Oilfield Applications
The SGPE Lifting-Lowering and Releasing Overshot supports a wide range of oilfield fishing and well recovery operations, including:
- Oil and gas well fishing operations
- Workover fishing inside casing
- Drilling accident recovery
- Fractured tubing recovery in oil wells
- Broken drill pipe recovery in drilling wells
- Stuck drill string recovery inside casing
- Downhole tubular fish recovery
- Casing fishing operations in workover wells
- Well intervention and well repair projects
- Onshore and offshore oilfield fishing jobs
- Damaged tubing recovery after downhole failure
- Tool release operations when the fish cannot move
This tool helps crews reduce non-productive time, improve recovery efficiency, and maintain better control during difficult wellbore fishing operations.
When to Use This Non-Rotating Releasing Overshot
Choose the SGPE Lifting-Lowering and Releasing Overshot when your fishing job needs an external catch and a reliable non-rotating release method.
This tool works especially well when:
- The tubular fish stays inside casing
- The fish requires external catching
- Tubing, drill pipe, or drill string has fractured downhole
- Sand, scale, deformation, collapse, or debris causes sticking
- Drill string rotation faces limits or may damage the fish
- A conventional rotating overshot cannot complete the job safely
- The crew needs to retrieve the tool after an unsuccessful fishing attempt
- The well requires a practical solution for workover or well intervention
For complex wells, SGPE can help select the proper model according to fish size, casing size, connection type, required tool O.D., and downhole operation requirements.
Structure of Lifting-Lowering and Releasing Overshot
The SGPE Lifting-Lowering and Releasing Overshot mainly includes:
- Top sub
- Bowl
- Guide pin
- Guide sleeve
- Joint sleeve
- Plug
- Roller pin
- Slip
- Guide
The box thread of the top sub connects with the drill stem, and the pin thread connects with the bowl. The lower end of the bowl connects with the guide.
Inside the bowl, the inner cone matches the slip and supports the gripping action. The guide sleeve connects with the joint sleeve through the box thread. The outer surface of the guide sleeve has milled track grooves, including three long grooves and three short grooves. These grooves guide the tool and control the change between catching and releasing.
When the guide pin stays in the long groove, the tool enters the fishing position. When the guide pin stays in the short groove, the tool enters the releasing position.
The joint sleeve uses a two-petal structure to connect the slip and the guide sleeve. The roller pin acts as a bearing. The slip has internal gripping threads to catch the fish, while the guide at the lower end leads the downhole fish into the slip.
Working Principle
The SGPE Lifting-Lowering and Releasing Overshot completes catching and releasing through the guide pin and the long-short track groove system.
When the tool reaches the top of the fish inside the casing, the operator lowers the overshot until it contacts the fish. Then the operator adjusts the axial movement from the surface, and the guide pin enters the required groove.
When the guide pin enters the long groove, the slip moves into the fishing position. The internal gripping threads engage the fish, and the operator can lift the stuck tubular from the wellbore.
When the guide pin enters the short groove, the slip moves into the releasing position. The tool disengages from the fish without drill string rotation, so the operator can retrieve the overshot safely.
This working principle gives oilfield crews a simple way to catch, lift, lower, and release downhole fish in wells where rotation may not work effectively.
Technical Specifications
| Model | Tool O.D. mm | Connection | Catch Size in |
|---|---|---|---|
| TFLT48 | 95 | NC26 | 1.9 |
| TFLT60 | 105 | NC31 | 2 3/8 |
| TFLT73 | 115 | NC31 | 2 7/8 |
| TFLT89 | 134 | NC38 | 3 1/2 |
| TFLT114 | 150 | NC38 | 4 1/2 |
Not sure which model fits your operation? Send SGPE your fish O.D., casing size, connection type, required tool O.D., and fishing condition. Our team will help you select the suitable Lifting-Lowering and Releasing Overshot.
How to Select the Right Overshot
To select the correct Lifting-Lowering and Releasing Overshot for your oilfield fishing operation, please confirm the following details:
- Fish type, such as tubing, drill pipe, or drill string
- Fish outside diameter
- Casing size and available clearance
- Required tool outside diameter
- Drill string connection
- Downhole sticking condition
- Well type, such as oil well, gas well, workover well, or drilling well
- Whether rotation is available, limited, or prohibited
- Required catching and releasing method
SGPE can recommend a suitable model according to your actual well condition and fishing requirements.
Why Choose SGPE
SGPE supplies oilfield fishing tools for drilling, workover, casing fishing, well repair, and downhole recovery operations. Our Lifting-Lowering and Releasing Overshot helps crews simplify fishing work, improve tool recovery, and reduce operational risk in difficult wellbore conditions.
SGPE Advantages
- Professional oilfield fishing tool supplier
- Non-rotating catching and releasing design
- Suitable for oil and gas drilling and workover operations
- Reliable performance in casing fishing jobs
- Strong gripping force for tubular fish
- Easy operation through axial lifting-lowering action
- Multiple models for common oilfield tubular sizes
- Model selection support based on real well conditions
- Custom connection and size options available on request
Whether you need a tubing fishing overshot, drill pipe fishing overshot, casing fishing tool, or non-rotating releasing overshot, SGPE can provide a practical solution for your wellsite fishing operation.
FAQ About Lifting-Lowering and Releasing Overshot
Product & Operation FAQ
1. What is a Lifting-Lowering and Releasing Overshot?
A Lifting-Lowering and Releasing Overshot is a non-rotating oilfield fishing tool for catching and releasing tubular fish inside casing. Crews use it to recover fractured tubing, broken drill pipe, stuck drill strings, and similar downhole fish during drilling, workover, casing fishing, and well intervention operations.
The tool works through controlled lifting and lowering from the surface. It does not require drill string rotation, so it suits restricted casing, deviated wells, and complex wellbore conditions.
2. What makes this overshot different from a conventional fishing overshot?
A conventional fishing overshot often needs rotation to catch or release the fish. The SGPE Lifting-Lowering and Releasing Overshot uses a mechanical track groove system instead.
Operators can switch the tool between the fishing position and the releasing position through vertical movement. This non-rotating design helps reduce risk when rotation may damage the fish, increase torque, or fail because of stuck pipe, casing restrictions, or downhole debris.
3. Does this non-rotating releasing overshot require drill string rotation?
No. This tool catches and releases the tubular fish without drill string rotation. Operators control the overshot by lifting and lowering the string from the surface.
This feature makes the tool suitable for oil and gas wells where rotation is limited, unsafe, or unavailable. It also helps improve control during stuck drill string recovery, tubing fishing, casing fishing, and difficult workover operations.
4. What types of fish can this overshot catch?
This overshot can catch common tubular fish in oilfield drilling and workover operations, including fractured tubing, broken tubing, drill pipe, stuck drill strings, and other downhole tubulars inside casing.
The slip has internal gripping threads that engage the fish firmly. At the same time, the guide leads the fish into the slip, which improves catching accuracy and supports smoother fishing operations.
5. Can this overshot fish stuck tubing or drill pipe inside casing?
Yes. The tool works well for stuck tubing recovery, drill pipe fishing, and stuck drill string recovery inside casing. It provides an external catching method when the fish remains inside the casing and the crew needs a reliable non-rotating fishing tool.
Operators often choose this overshot when fractured tubing, damaged drill pipe, or a stuck tubular blocks normal drilling or workover progress.
6. How does the tool release a heavily stuck fish?
When the fish becomes heavily stuck and the fishing job cannot continue, the operator can release the fish and retrieve the tool by bumping down the string and picking up directly.
The guide pin moves into the short groove, and the slip moves into the releasing position. Then the tool disengages from the stuck tubular without rotation. This function helps reduce the risk of leaving the overshot in the well.
7. When should operators use a Lifting-Lowering and Releasing Overshot?
Operators should choose this tool when the well requires external catching and a non-rotating release method. It works especially well when the fish sits inside casing, the tubing or drill pipe has fractured downhole, or the crew cannot use rotation safely.
It also suits wells with sand, scale, deformation, collapse, debris, restricted casing clearance, or deviated wellbore conditions. In these situations, the tool helps crews catch, release, and retrieve the overshot with better control.
8. Can this overshot work in offshore oilfield fishing operations?
Yes. Crews can use this overshot in both onshore and offshore oil and gas well fishing operations. The right model depends on fish O.D., casing size, connection type, tool O.D., and downhole condition.
For offshore workover and well intervention projects, the non-rotating release method can help crews save rig time and reduce operational risk during difficult fishing jobs.
Selection & Quotation FAQ
9. How do I choose the correct model for my fishing operation?
To choose the correct Lifting-Lowering and Releasing Overshot, first confirm the fish outside diameter, casing size, available clearance, connection type, and well condition. You should also check whether the drill string can rotate safely.
SGPE offers standard models for common oilfield tubular sizes, including 1.9 in, 2 3/8 in, 2 7/8 in, 3 1/2 in, and 4 1/2 in catch sizes. Send SGPE your fishing data, and our team will help recommend a suitable model for your well.
10. What information should I send before requesting a quotation?
For a faster quotation, please send SGPE the following details:
- Fish O.D.
- Casing size
- Required tool O.D.
- Drill string connection
- Fish type, such as tubing, drill pipe, or drill string
- Well type, such as drilling well, workover well, oil well, or gas well
- Downhole condition and sticking situation
- Required catching and releasing method
These details help SGPE recommend the right overshot and provide a more accurate quotation.
11. Can SGPE provide custom connections or special sizes?
Yes. SGPE can discuss custom connection and special size requirements according to your well condition and fishing operation. Standard models cover common oilfield tubular sizes, while special requirements may need further technical confirmation.
If your project needs a specific connection, catch size, or tool O.D., send SGPE your detailed parameters. Our team will review the working condition and suggest a practical solution.
12. Why choose SGPE for Lifting-Lowering and Releasing Overshots?
SGPE supplies oilfield fishing tools for drilling, workover, casing fishing, well repair, and downhole recovery operations. Our Lifting-Lowering and Releasing Overshot helps crews catch and release tubular fish without rotation, which improves control in difficult wellbore conditions.
SGPE also provides model selection support, technical communication, and custom options according to actual well data. Whether you need a tubing fishing overshot, drill pipe fishing overshot, casing fishing tool, or non-rotating releasing overshot, SGPE can help you choose the right tool for your oilfield fishing operation.
Request a Quote
SGPE supplies high-quality Lifting-Lowering and Releasing Overshots for oilfield fishing, workover operations, drilling accident recovery, casing fishing, tubing recovery, and stuck drill string recovery.
Our non-rotating overshot helps operators catch and release downhole fish through simple axial movement. It supports safer tool recovery, reduces operation difficulty, and improves fishing efficiency in oil and gas well operations.
E-Mail:
info@sgpe.com
