Description
Series 150 Overshot Accessories
Oilfield Fishing Tool Accessories for Series 150 Releasing and Circulating Overshot
SGPE supplies Series 150 Overshot Accessories for oil and gas recovery jobs that require reliable external catch performance. These accessories work with the Series 150 Releasing and Circulating Overshot and help operators handle damaged fish tops, poor fish alignment, washed-out wellbores, large hole sections and difficult downhole recovery conditions.
During drilling, workover and well intervention operations, a downhole fish may become flared, jagged, tilted, worn or hard to engage. In some wells, the overshot may move beside the fish instead of passing over it. The right accessory helps guide the fish into the bowl, improve engagement, remove damaged metal and support a stronger catch.
SGPE offers a complete accessory range, including Extension Sub, Wall Hook Guide, Oversize Guide, Mill Extension and Mill Guide. Each accessory solves a specific field problem, such as deeper engagement, better fish alignment, larger guiding coverage or milling before grapple engagement.
With the correct configuration, crews can reduce repeated fishing attempts, save rig time and improve downhole fish recovery efficiency.
Product Overview
The Series 150 Releasing and Circulating Overshot is a common external catch fishing tool in the oil and gas industry. It catches the outside diameter of a downhole fish, grips it with a grapple and allows circulation during the recovery process.
However, well conditions often change during fishing jobs. A fish may have a damaged top, broken metal, flared edges, irregular surfaces or poor alignment. It may also sit away from the hole centerline, lean against the borehole wall or stay in a washed-out section.
SGPE Series 150 Overshot Accessories help operators adapt the overshot assembly to these conditions. They support drilling fishing, workover recovery, well intervention services and downhole fish recovery in both cased hole and open hole environments.
Main Series 150 Overshot Accessories
SGPE supplies the following accessories for Series 150 Overshot assemblies:
- Extension Sub
- Wall Hook Guide
- Oversize Guide
- Mill Extension
- Mill Guide
Operators can select the correct accessory according to fish O.D., overshot O.D., casing size, wellbore condition, fish position, fish top condition and milling requirements.
Extension Sub
For Deeper Engagement Below a Damaged Fish Top
The Extension Sub connects between the top sub and the bowl of the Series 150 Overshot. It helps the overshot move farther down over the fish when the upper section cannot provide a strong gripping area.
In many recovery jobs, the fish top may become crushed, split, worn, flared or irregular after stuck pipe, tool failure, drilling accidents or earlier fishing attempts. If the grapple only catches the damaged section, it may not hold the fish securely. The Extension Sub helps the overshot bypass this area and reach a cleaner, stronger section below it.
This accessory also improves pack-off performance. Once the overshot reaches the correct catch depth, the packer can seal more effectively and support circulation during the job.
Key Features
- Connects between the top sub and the bowl
- Allows deeper engagement over the fish
- Helps bypass damaged, worn or deformed fish tops
- Improves grapple contact with a stronger fish section
- Supports better pack-off and circulation
- Helps increase catch reliability in difficult recovery jobs
- Fits drilling, workover and well intervention applications
Available Lengths
SGPE supplies Extension Subs in lengths from 24 inches to 60 inches. Unless the customer requests another length, SGPE normally supplies a standard 36-inch Extension Sub.
Typical Use
Choose an Extension Sub when the fish top shows damage, wear, deformation or poor gripping conditions. It helps the overshot reach a reliable catch point below the damaged area.
Ordering Information
When ordering an Extension Sub, please provide:
- Overshot O.D.
- Required length
- Connection type
- Fish O.D.
- Fish top condition
- Wellbore or casing size
- Operation details, such as drilling, workover or intervention job
Wall Hook Guide
For Off-Center Fish in Washed-Out Wellbores
The Wall Hook Guide helps capture and centralize a fish located in a washed-out or enlarged wellbore section. In this situation, a conventional overshot guide may move beside the fish instead of directing it into the bowl.
The Wall Hook Guide catches the fish neck, brings it toward the centerline and guides it into the overshot bowl. Once the fish enters the bowl correctly, the grapple can engage it more securely.
This accessory works well when the fish leans against the borehole wall, stays away from the center of the hole or lies in an irregular wellbore section.
Key Features
- Captures the fish neck in washed-out hole sections
- Centralizes off-center fish before engagement
- Guides the fish into the overshot bowl
- Reduces the risk of bypassing the fish
- Improves external catch reliability
- Helps reduce repeated fishing attempts
- Works well in difficult alignment conditions
Typical Use
Choose a Wall Hook Guide when the fish sits off-center, leans against the wellbore wall or remains in an enlarged hole section. This guide helps crews bring the fish into alignment before the overshot engages it.
Oversize Guide
For Large Hole Sections and Small Fish Diameters
The Oversize Guide helps guide the fish into the overshot when the hole size is much larger than the fish diameter. In large borehole sections, the overshot may travel beside the fish instead of passing over it. This can reduce catch accuracy and increase rig time.
By replacing the standard guide with an Oversize Guide, operators gain a larger guiding profile. This larger guide helps align the fish with the overshot, direct the fish into the bowl and keep the fishing assembly on the correct path.
The Oversize Guide offers a practical solution for large hole conditions, open hole fishing, cased hole fishing and recovery jobs where a standard guide does not provide enough coverage.
Key Features
- Provides a larger guiding area than a standard guide
- Helps align the fish with the overshot
- Reduces the chance of passing beside the fish
- Improves entry control in large hole sections
- Supports more stable external catch performance
- Works in open hole, cased hole and washed-out wellbore conditions
- Helps improve recovery efficiency in field fishing jobs
Typical Use
Choose an Oversize Guide when the wellbore or hole size greatly exceeds the fish O.D. It improves alignment and helps the overshot engage the fish more reliably.
Mill Extension
For Milling Flared or Jagged Fish Tops Before Engagement
The Mill Extension installs between the bowl and the guide. Operators can use it with a Standard Guide, Oversize Guide or Wall Hook Guide. Its internal hard-faced surface mills away flared, jagged or damaged metal from the fish so the fish can pass into the bowl and engage with the grapple.
A fish top may become irregular after pipe failure, tool damage, twisting, impact or earlier fishing attempts. Sharp edges, flared metal and broken sections can stop the fish from entering the overshot smoothly. The Mill Extension removes these obstructions and prepares the fish for a secure catch.
This accessory combines milling and catching in one overshot assembly, which can reduce extra trips and save rig time.
Key Features
- Installs between the bowl and the guide
- Mills flared, jagged or damaged fish tops
- Helps the fish enter the overshot bowl
- Improves grapple engagement
- Works with Standard Guide, Oversize Guide or Wall Hook Guide
- Combines milling and catching in one assembly
- Supports damaged fish recovery in oil and gas wells
Typical Use
Choose a Mill Extension when the fish top has flared, jagged or damaged metal that blocks smooth entry into the bowl. It helps remove obstructions before the grapple engages the fish.
Mill Guide
For Trimming Badly Damaged Fish Tops
The Mill Guide replaces the Standard Guide or Oversize Guide when the fish has severe flaring, jagged metal or deformation at the top. It trims the damaged fish top before the fish enters the overshot.
Unlike a standard guide, the Mill Guide combines guiding and milling at the lower end of the assembly. It removes damaged material and helps the fish move smoothly into the bowl. Operators often choose it when severe deformation prevents normal overshot engagement.
The Mill Guide can also reduce extra trips because one assembly can trim, guide and prepare the fish for catching.
Key Features
- Replaces Standard Guide or Oversize Guide
- Removes badly flared or jagged metal
- Trims damaged fish tops before engagement
- Helps the fish enter the overshot smoothly
- Combines guiding and milling functions
- Supports challenging downhole recovery jobs
- Helps improve catch success in oil and gas wells
Typical Use
Choose a Mill Guide when the fish top has severe flaring, jagged edges or deformation. It prepares the fish for smooth entry when a standard guide cannot handle the damaged top.
Need Help Selecting the Right Series 150 Overshot Accessory?
Send SGPE your overshot O.D., fish O.D., casing size, wellbore condition and fish top description. Our team can help you choose the right Extension Sub, Wall Hook Guide, Oversize Guide, Mill Extension or Mill Guide for your fishing assembly.
This selection support helps procurement teams, drilling contractors and oilfield service companies reduce uncertainty before placing an order.
Why Choose SGPE Series 150 Overshot Accessories?
SGPE supplies reliable oilfield fishing tool accessories for drilling, workover and well intervention projects. Our Series 150 Overshot Accessories help operators adapt the overshot assembly to different downhole conditions and improve recovery performance.
Complete Accessory Range
SGPE supplies Extension Sub, Wall Hook Guide, Oversize Guide, Mill Extension and Mill Guide for Series 150 Releasing and Circulating Overshot assemblies. Customers can select the right accessory according to the actual fishing condition.
Designed for Real Field Problems
Each accessory solves a common field challenge, such as damaged fish tops, off-center fish, oversized hole sections, flared metal, jagged edges and poor fish alignment.
Better Fish Alignment
Wall Hook Guides and Oversize Guides help centralize the fish and guide it into the overshot bowl in washed-out, enlarged or large wellbore sections.
Stronger Engagement Performance
Extension Subs, Mill Extensions and Mill Guides help the grapple reach a cleaner and stronger section of the fish. This improves catch reliability and reduces the risk of slipping.
Custom Manufacturing Support
SGPE can supply overshot accessories according to overshot O.D., fish O.D., connection type, required length and field operation requirements. Customers can also send drawings or special specifications for custom production.
Practical Support for Procurement Teams
SGPE helps customers select suitable accessories based on fishing objectives, wellbore conditions and tool dimensions. This support helps buyers, drilling contractors and service companies place orders with clearer technical information.
Reduced Rig Time
The correct accessory can reduce repeated attempts, extra trips and non-productive time. It can also help crews complete recovery jobs with a more efficient tool configuration.
Oilfield Applications for Series 150 Overshot Accessories
SGPE Series 150 Overshot Accessories serve a wide range of oil and gas recovery jobs, including:
- Drilling fishing jobs
- Workover recovery operations
- Well intervention fishing services
- Downhole fish recovery in oil and gas wells
- External catch fishing applications
- Recovery of broken drill pipe, tubing and tool joints
- Recovery of stuck, damaged or broken downhole tools
- Cased hole and open hole fishing jobs
- Fishing in washed-out or enlarged wellbore sections
- Milling and catching of flared or jagged fish tops
- Overshot assembly configuration for complex well conditions
These accessories help operators handle difficult wellbore environments and improve recovery efficiency.
How to Select the Right Series 150 Overshot Accessory
Selecting the correct accessory depends on fish condition, fish O.D., wellbore size, overshot O.D. and the recovery objective.
| Downhole Condition | Recommended Accessory |
|---|---|
| The upper fish section has damage or poor gripping conditions | Extension Sub |
| The fish sits off-center in a washed-out wellbore section | Wall Hook Guide |
| The hole size is much larger than the fish diameter | Oversize Guide |
| The fish top has flared or jagged metal and needs internal milling | Mill Extension |
| The fish top has severe damage and needs trimming before entry | Mill Guide |
For accurate selection, customers can provide fish O.D., overshot O.D., wellbore size, casing size, fish top condition, connection type and operation details. SGPE can recommend a suitable accessory configuration for the fishing job.
Series 150 Overshot Accessories Specifications
Specification details may vary according to overshot size and customer requirements.
| Item | Description |
|---|---|
| Product Name | Series 150 Overshot Accessories |
| Compatible Tool | Series 150 Releasing and Circulating Overshot |
| Product Type | Oilfield fishing tool accessories |
| Main Accessories | Extension Sub, Wall Hook Guide, Oversize Guide, Mill Extension, Mill Guide |
| Industry | Oil and Gas |
| Application | Drilling fishing, workover recovery, well intervention and downhole fish recovery |
| Fishing Type | External catch fishing operation |
| Extension Sub Length | 24–60 inches |
| Standard Extension Sub Length | 36 inches, unless otherwise specified |
| Guide Options | Standard Guide, Wall Hook Guide, Oversize Guide, Mill Guide |
| Milling Options | Mill Extension, Mill Guide |
| Ordering Information | Overshot O.D., accessory type, fish O.D., wellbore size and operation details |
| Customization | Available according to tool size, fish condition, connection type and field requirements |
Custom Series 150 Overshot Accessories from SGPE
SGPE supports custom supply for Series 150 Overshot Accessories according to field requirements. Customers can provide drawings, overshot O.D., fish O.D., connection type, required length and well conditions. Our team can help match the correct accessory to the overshot assembly and fishing objective.
Custom options may include:
- Different Extension Sub lengths
- Accessories matched to overshot O.D.
- Connection requirements upon request
- Special guide configurations for washed-out wellbores
- Milling accessories for damaged or flared fish tops
- Tool selection support for drilling, workover and intervention jobs
- Custom overshot accessory solutions for oilfield service companies
For projects with non-standard dimensions or special operating conditions, SGPE can review the application and provide a practical solution.
Related Oilfield Fishing Tools
To support complete fishing assembly selection, customers may also review other SGPE oilfield fishing tools:
- Series 150 Releasing and Circulating Overshot
- Oilfield Fishing Magnet
- Junk Basket for Downhole Fishing
- Taper Tap Fishing Tool
- Die Collar Fishing Tool
- Safety Joint for Fishing Assembly
- Fishing Bumper Sub
Use these product names as internal links on the SGPE website. A clear internal link structure helps customers find related tools and helps Google understand the full oilfield fishing tool product range.
Request a Quote for Series 150 Overshot Accessories
Looking for reliable Series 150 Overshot Accessories for drilling fishing, workover recovery or well intervention operations? SGPE can help you select the right accessory for your overshot assembly and field condition.
We supply Extension Sub, Wall Hook Guide, Oversize Guide, Mill Extension and Mill Guide for the Series 150 Releasing and Circulating Overshot. These accessories help improve fish alignment, extend engagement depth, guide off-center fish, mill damaged fish tops and support more reliable downhole fish recovery.
To request a quotation, please send us your overshot O.D., fish O.D., fish condition, casing size, connection type, required accessory type and quantity. For milling accessories, please describe the fish top condition. For guide accessories, please share the hole size and fish position if available.
SGPE will review your fishing condition and recommend a suitable Series 150 Overshot accessory configuration for your oil and gas recovery job.
Send your specifications to SGPE today and get a quotation for Series 150 Overshot Accessories.
E-Mail:
info@sgpe.com
FAQ About Series 150 Overshot Accessories
1. What are Series 150 Overshot Accessories?
Series 150 Overshot Accessories are oilfield fishing tool accessories used with the Series 150 Releasing and Circulating Overshot. They help operators guide, centralize, extend, mill and trim the fish so the overshot can engage it more securely.
SGPE supplies key accessories such as Extension Sub, Wall Hook Guide, Oversize Guide, Mill Extension and Mill Guide. These accessories help crews handle damaged fish tops, poor alignment, flared edges, irregular fish profiles and washed-out wellbore conditions.
2. What accessories are available for the Series 150 Overshot?
SGPE offers a complete accessory range for the Series 150 Overshot, including Extension Sub, Wall Hook Guide, Oversize Guide, Mill Extension and Mill Guide.
The Extension Sub helps the overshot reach a deeper catch point. The Wall Hook Guide centralizes off-center fish. The Oversize Guide improves alignment in large hole sections. The Mill Extension mills flared or jagged fish tops before engagement. The Mill Guide trims severely damaged fish tops at the entry point.
Together, these tools improve the performance of external catch fishing assemblies in drilling, workover and well intervention jobs.
3. When should operators use an Extension Sub?
Operators use an Extension Sub when the upper fish section has damage or cannot provide a strong gripping surface. A fish top may become crushed, split, worn, flared or irregular after stuck pipe, tool failure, drilling accidents or previous recovery attempts.
The Extension Sub connects between the top sub and the bowl. It lets the overshot move farther down over the fish and engage a cleaner section below the damaged area. This improves grapple engagement and supports better pack-off and circulation.
SGPE supplies Extension Subs from 24 inches to 60 inches. The standard length is 36 inches, unless customers request another length.
4. What information should I provide when ordering an Extension Sub?
Please provide the overshot O.D., required length, connection type, fish O.D., fish top condition and wellbore size. These details help SGPE recommend the right Extension Sub for your recovery job.
For non-standard lengths or special connections, you can also send drawings or field requirements. SGPE can review the overshot size, fish condition and operating environment before recommending a suitable configuration.
5. What does a Wall Hook Guide do?
A Wall Hook Guide captures and centralizes an off-center fish in a washed-out or enlarged wellbore section. In this condition, a standard guide may move beside the fish instead of guiding it into the overshot bowl.
The Wall Hook Guide catches the fish neck, brings it toward the centerline and guides it into the bowl. Operators often choose it when the fish leans against the borehole wall or stays away from the center of the hole.
This guide helps reduce missed engagement, repeated attempts and unnecessary rig time.
6. When should I choose an Oversize Guide instead of a Standard Guide?
Choose an Oversize Guide when the hole size or wellbore section is much larger than the fish diameter. In large hole conditions, the overshot may travel beside the fish instead of passing over it.
The Oversize Guide provides a larger guiding profile. It helps align the fish with the overshot and directs it into the bowl. It works well in open hole fishing, cased hole fishing, washed-out wellbores and other large hole recovery jobs.
7. What is the difference between a Wall Hook Guide and an Oversize Guide?
A Wall Hook Guide works best when the fish sits off-center, leans against the wellbore wall or remains in a washed-out hole section. It helps hook, centralize and guide the fish into the overshot.
An Oversize Guide works best when the hole size is much larger than the fish O.D. It gives the assembly a larger guiding area and helps prevent the overshot from passing beside the fish.
Both accessories improve alignment, but they solve different problems. The Wall Hook Guide focuses on off-center fish capture. The Oversize Guide focuses on large hole alignment and entry control.
8. What is a Mill Extension used for?
A Mill Extension mills away flared, jagged or damaged metal from the top of the fish before the grapple engages it. It installs between the bowl and the guide, and operators can use it with a Standard Guide, Oversize Guide or Wall Hook Guide.
Damaged fish tops can block entry into the overshot bowl. Sharp edges, flared metal and broken sections can also prevent secure grapple engagement. The Mill Extension removes these obstructions and helps the fish pass smoothly into the bowl.
This accessory allows crews to combine milling and catching in one assembly, which can reduce extra trips and improve recovery efficiency.
9. When should operators use a Mill Guide?
Operators use a Mill Guide when the fish top has severe flaring, jagged metal or deformation. The Mill Guide replaces the Standard Guide or Oversize Guide and trims the fish before it enters the overshot.
This accessory combines guiding and milling at the entry point. It prepares the fish for smooth entry and improves the chance of secure engagement. Crews often choose a Mill Guide for broken drill pipe, damaged tubing, stuck tools or recovery jobs after failed fishing attempts.
10. What is the difference between a Mill Extension and a Mill Guide?
A Mill Extension installs between the bowl and the guide. It mills damaged, flared or jagged fish tops as the fish moves toward the bowl. Operators can use it together with a Standard Guide, Oversize Guide or Wall Hook Guide.
A Mill Guide replaces the Standard Guide or Oversize Guide. It mills and guides the fish at the entry point of the overshot assembly.
In simple terms, the Mill Extension adds milling capability inside the assembly, while the Mill Guide provides milling and guiding at the lower end of the tool. Both accessories help operators handle damaged fish tops and improve downhole fish recovery.
11. Can SGPE supply custom Series 150 Overshot Accessories?
Yes. SGPE can supply custom Series 150 Overshot Accessories according to overshot O.D., fish O.D., required length, connection type, wellbore size and field requirements.
Customers can provide drawings, sample specifications or recovery details. SGPE can match the right accessory to the overshot assembly and fishing objective. Custom options may include different Extension Sub lengths, special guide configurations, milling accessories for damaged fish tops and tools for washed-out wellbore conditions.
12. How can I request a quotation for Series 150 Overshot Accessories?
To request a quotation, please send SGPE your overshot O.D., required accessory type, fish O.D., fish condition, wellbore size, casing size, connection type, quantity and operation details.
For Extension Subs, please also provide the required length. For Mill Extensions or Mill Guides, please describe the fish top condition, such as flared, jagged, broken or severely deformed. For Wall Hook Guides and Oversize Guides, please provide the hole size and fish position if available.
With this information, SGPE can recommend a suitable Series 150 Overshot accessory configuration and provide a quotation for your fishing job.
Final CTA
Need a dependable supplier for Series 150 Overshot Accessories and other oilfield fishing tool accessories?
SGPE provides practical solutions for drilling contractors, workover teams, well intervention companies and oilfield service providers. Whether your fishing job requires deeper engagement, better fish alignment, larger guiding coverage or milling of damaged fish tops, our team can help you choose the right accessory for your Series 150 Overshot assembly.
Contact SGPE today for:
- Series 150 Overshot Accessories
- Custom overshot accessories
- Extension Sub for Series 150 Overshot
- Wall Hook Guide for off-center fish recovery
- Oversize Guide for large hole fishing jobs
- Mill Extension for flared fish top milling
- Mill Guide for damaged fish top trimming
- Oilfield fishing tool accessories for downhole fish recovery
E-Mail:
info@sgpe.com






