Product Overview
The Magnet (High-Strength Permanent Magnetic Junk Retrieval Fishing Magnet) is a heavy-duty bottom permanent magnetic metal debris salvage retrieval fishing magnet specially developed for coiled tubing downhole wellbore cleanout and magnetic metal junk recovery workover operations.
This magnetic fishing tool adopts embedded high-strength permanent magnetic core internal layout design, with powerful stable magnetic adsorption force, capable of reliably capturing and locking all types of magnetic metal junk fragments left in the wellbore, including fallen downhole nuts, bolts, steel balls, perforating gun metal shards, drill bit magnetic scrap metal and other magnetic metal debris. Integrated built-in circulation wash nozzles are matched on the outer cylinder body of the magnet, independent fluid circulation flushing passages are reserved inside the tool body, which can realize continuous wellbore fluid circulation and debris flushing cleaning operations during magnet running-in, tripping and salvage processes, avoiding debris accumulation and magnetic adsorption surface blockage affecting subsequent salvage effect.
Two independent working condition material grade configuration options are provided for this magnetic retrieval magnet to adapt to different downhole wellbore fluid corrosive environments:
Standard grade: Made of high-quality carbon steel base material, suitable for conventional non-corrosive downhole wellbore construction environments without high-concentration hydrogen sulfide (H₂S) corrosive medium;
H₂S sour service grade: Adopts special high-sulfur corrosion-resistant alloy base material, with excellent anti-sulfide stress cracking performance and strong resistance to acid corrosive fluid erosion, specially applicable to high-sulfur H₂S containing corrosive downhole wellbore construction conditions.
The Magnet has no complex internal movable friction components, spring energy storage assemblies or differential pressure release mechanisms, with extremely simplified wellsite operation flow and low maintenance cost; construction crews only need to lower the magnetic magnet to contact magnetic metal debris to realize automatic magnetic adsorption capture of junk fragments, and can cooperate with built-in circulation wash nozzles to complete wellbore fluid circulation and debris flushing cleaning operations without additional auxiliary operation steps such as drop ball delivery or shear pin impact jarring.
The standardized product lineup covers outer diameter sizes ranging from 2-1/8" to 3-5/8", with multiple matched fixed closed make-up length specifications, and provides two independent material grade selection options: standard grade and H₂S sour service corrosion-resistant grade. The product is equipped with standard 1-1/2"AMMT, 2-3/8"PAC, 2-3/8"REG and NC26 bottom connection threads for universal compatibility with mainstream coiled tubing connectors and other downhole wellbore cleanout workover service tools. Custom outer diameter, magnetic core adsorption strength and base material corrosion resistance grade customization are available upon customer technical drawing submission.
Complete Technical Specification Table
| PN Part Number | Outer Diameter OD | Make-Up Length (Closed) | Working Condition Grade | Bottom Connection Thread |
|---|---|---|---|---|
| L3112125120 | 2-1/8" | 9.6" | STD Standard | 1-1/2" AMMT |
| L3112875120 | 2-7/8" | 13" | STD Standard | 2-3/8" PAC |
| L3113125120 | 3-1/8" | 15" | STD Standard | 2-3/8" REG |
| L3113625120 | 3-5/8" | 17" | STD Standard | NC26 |
| L3112125320 | 2-1/8" | 9.6" | H₂S Sour Service | 1-1/2" AMMT |
| L3112875320 | 2-7/8" | 13" | H₂S Sour Service | 2-3/8" PAC |
| L3113125320 | 3-1/8" | 15" | H₂S Sour Service | 2-3/8" REG |
| L3113625320 | 3-5/8" | 17" | H₂S Sour Service | NC26 |
Note: Custom outer diameter, internal permanent magnetic core adsorption strength and base material corrosion resistance grade modification magnetic junk retrieval magnets are available via engineering consultation. Two working condition grades (STD standard carbon steel / H₂S sour service anti-corrosion alloy) are optional for each outer diameter size, and the corresponding working condition grade needs to be clearly confirmed according to the downhole wellbore fluid H₂S concentration corrosive environment during order placement.
Core Features & Advantages
Embedded High-Strength Permanent Magnetic Core Layout Design: High-performance permanent magnetic core is fully embedded and sealed inside the tool body, forming stable powerful magnetic adsorption field, capable of reliably capturing and locking all types of magnetic metal junk fragments such as nuts, bolts, steel balls and perforating gun metal shards, magnetic metal debris is not easy to fall off during the upward tripping process of the magnet, ensuring high salvage success rate of magnetic metal junk.
Integrated Built-In Circulation Wash Nozzle Matching Design: Independent dedicated fluid circulation flushing passages are reserved inside the magnet body, matched with built-in circulation wash nozzles on the outer cylinder wall, supporting continuous wellbore fluid circulation and debris flushing cleaning operations during magnet running-in, tripping and salvage processes, effectively preventing debris accumulation and magnetic adsorption surface blockage from affecting the magnetic adsorption salvage performance of the tool.
Dual Independent Working Condition Material Grade Optional Configuration: Two complete base material grade versions are provided for free selection to fully match different downhole wellbore fluid corrosive environment construction demands: standard carbon steel grade is suitable for conventional non-corrosive wellbore construction environments without high-concentration H₂S corrosive medium; H₂S sour service high-corrosion-resistant alloy grade has excellent anti-sulfide stress cracking performance and strong acid fluid erosion resistance, specially applicable to high-sulfur H₂S containing corrosive downhole wellbore construction conditions.
Ultra-Simplified Wellsite Operation Logic: The magnetic fishing magnet has no complex internal movable friction components, spring energy storage assemblies or differential pressure release mechanisms, the operation flow is highly streamlined: only need to lower the magnetic magnet along the wellbore until the bottom magnetic adsorption surface contacts magnetic metal debris, and the permanent magnetic core will automatically generate adsorption force to capture and lock magnetic metal junk fragments; meanwhile, the built-in circulation wash nozzles can be matched to complete continuous wellbore fluid circulation and debris flushing cleaning operations, no complex auxiliary operation steps such as drop ball delivery or shear pin impact jarring are needed, shortening wellsite operation time and reducing human error risks.
Low Routine Maintenance Design: The integral sealed cylinder body structure eliminates vulnerable split assembly movable friction parts; after each magnetic metal debris salvage operation, only simple surface debris cleaning and magnetic adsorption surface wear inspection are required, no complex disassembly, internal magnetic core replacement or spring preload adjustment maintenance procedures, greatly reducing daily maintenance labor and spare parts inventory cost.
Full Outer Diameter Size Compatibility & Dual Material Grade Matching: Standard product series covers 2-1/8", 2-1/2", 2-7/8", 3-1/8" and 3-5/8" outer diameter specifications, each OD size supports two independent material grade versions for free matching selection: standard carbon steel grade and H₂S sour service high-corrosion-resistant alloy grade, fully compatible with global mainstream medium-size coiled tubing assemblies for all magnetic metal junk debris salvage recovery intervention demands.
Multi-Type Standard Thread Compatibility: All product models are equipped with universal 1-1/2"AMMT, 2-3/8"PAC, 2-3/8"REG and NC26 bottom connection threads, realizing seamless assembly with global mainstream coiled tubing bottom-hole assemblies and other supporting downhole wellbore cleanout workover tools without extra conversion subs.
Precision CNC High-Strength Alloy Steel Manufacturing: Adopts precision CNC full-body machining of high-strength wear-resistant carbon steel / anti-H₂S corrosion alloy steel blank, integral sealed forming process for outer cylinder body, fully embedded sealing and fixing of internal high-performance permanent magnetic core, featuring outstanding circulating fluid erosion resistance, repeated magnetic adsorption load fatigue resistance and structural stability, extending long-term continuous magnetic metal junk debris salvage retrieval service life for downhole coiled tubing workover operations.
Application Scenarios
1. Coiled tubing downhole magnetic metal junk debris salvage recovery heavy-load intervention treatments, including fallen downhole nuts, bolts, steel balls, perforating gun metal shards, drill bit magnetic scrap metal and other magnetic metal junk fragment salvage construction operations
2. Conventional sweet crude oilfield integral sealed permanent magnetic magnetic junk retrieval magnet magnetic metal debris salvage fishing workover service (STD Standard carbon steel working condition grade)
3. High-sulfur H₂S containing corrosive downhole wellbore construction project magnetic metal junk debris salvage heavy workover projects requiring H₂S sour service anti-sulfide stress cracking high-corrosion-resistant alloy material grade
4. Long-term continuous repeated magnetic adsorption load safety protection for coiled tubing bottom-hole assemblies in onshore and offshore oilfield magnetic metal junk debris salvage recovery heavy workover intervention projects
Standard Delivery Package
Complete magnetic junk retrieval magnet integral sealed pre-assembled unit including outer cylinder body, internal fully embedded high-strength permanent magnetic core and built-in circulation wash nozzle assemblies
Spare interchangeable circulation wash nozzle maintenance kit with multiple flow passage size specifications for on-site wellbore circulation flow rate adjustment configuration
Full factory inspection test report including repeated magnetic adsorption load fatigue resistance test, integral tensile load test, permanent magnetic core magnetic field adsorption strength calibration test, outer cylinder body acid fluid corrosion resistance performance test and circulation wash nozzle fluid passage flow stability test data
Product dimension drawing and official installation & operation instruction manual, with detailed on-site magnetic metal debris salvage adsorption operation guidance, with clear reminder to select STD standard carbon steel grade or H₂S sour service anti-corrosion alloy grade according to downhole wellbore fluid H₂S concentration corrosive environment during order placement
Quality Warranty & After-Sales Service
Warranty Coverage: 12 months after factory shipment or 2000 cumulative magnetic adsorption load cycles, whichever condition is reached first
Full factory inspection: Each finished magnetic junk retrieval magnet passes integral tensile load test, repeated magnetic adsorption load fatigue test, permanent magnetic core magnetic field adsorption strength calibration test, outer cylinder body acid fluid corrosion resistance performance test and circulation wash nozzle fluid passage flow stability test before factory delivery
Free professional technical support: Our oilfield downhole tool engineering team provides coiled tubing magnetic metal junk debris salvage heavy workover tool string matching, outer diameter & working condition grade (STD / H₂S) selection consultation free of charge
Long-term spare parts supply: All interchangeable circulation wash nozzle wear accessories are stocked with competitive factory bulk pricing
Custom development service: Support custom outer diameters, internal permanent magnetic core adsorption strength, base material corrosion resistance grade modification, bottom thread profiles and special size magnetic junk retrieval magnets based on customer technical drawings
FAQ
Q1: What is the core function of a Magnet (Magnetic Junk Retrieval Fishing Magnet)?
The Magnet is a heavy-duty integral sealed permanent magnetic magnetic junk retrieval fishing magnet dedicated to coiled tubing downhole wellbore cleanout and magnetic metal junk debris salvage recovery workover operations. It adopts embedded high-strength permanent magnetic core layout design with powerful stable magnetic adsorption force, capable of reliably capturing and locking all types of magnetic metal junk fragments such as nuts, bolts, steel balls and perforating gun metal shards. Integrated built-in circulation wash nozzles are matched on the outer cylinder wall to support continuous wellbore fluid circulation and debris flushing cleaning operations during magnet running-in and salvage processes. Two independent working condition material grade options are provided: STD standard carbon steel grade for conventional non-corrosive wellbore environments without high-concentration H₂S corrosive medium; H₂S sour service high-corrosion-resistant alloy grade for high-sulfur H₂S containing corrosive downhole wellbore construction conditions. No complex internal movable friction components or spring assemblies are equipped, operation flow is highly simplified, widely applied for coiled tubing downhole magnetic metal junk debris salvage fishing workover construction operations.
Q2: What three core structural advantages does this Magnetic Junk Retrieval Magnet own?
1. Embedded high-strength permanent magnetic core integral sealed layout design, high-performance permanent magnetic core is fully embedded and sealed inside the outer cylinder body, forming stable powerful magnetic adsorption field, capable of reliably capturing and locking all types of magnetic metal junk fragments such as nuts, bolts, steel balls and perforating gun metal shards, magnetic metal debris is not easy to fall off during upward tripping process of the magnet, ensuring high salvage success rate of magnetic metal junk; 2. Dual independent working condition material grade optional configuration, two complete base material grade versions are provided for free selection to fully match different downhole wellbore fluid corrosive environment construction demands: standard carbon steel grade is suitable for conventional non-corrosive wellbore construction environments without high-concentration H₂S corrosive medium; H₂S sour service high-corrosion-resistant alloy grade has excellent anti-sulfide stress cracking performance and strong acid fluid erosion resistance, specially applicable to high-sulfur H₂S containing corrosive downhole wellbore construction conditions; 3. Integrated built-in circulation wash nozzle matching design & ultra-simplified wellsite operation logic, independent dedicated fluid circulation flushing passages are reserved inside the magnet body, matched with built-in circulation wash nozzles on the outer cylinder wall, supporting continuous wellbore fluid circulation and debris flushing cleaning operations during magnet running-in, tripping and salvage processes, effectively preventing debris accumulation and magnetic adsorption surface blockage from affecting magnetic adsorption salvage performance of the tool; the magnetic fishing magnet has no complex internal movable friction components, spring energy storage assemblies or differential pressure release mechanisms, only need to lower the magnetic magnet along the wellbore until the bottom magnetic adsorption surface contacts magnetic metal debris, and the permanent magnetic core will automatically generate adsorption force to capture and lock magnetic metal junk fragments, no complex auxiliary operation steps such as drop ball delivery or shear pin impact jarring are needed to shorten wellsite operation time and reduce human error risks.
Q3: What outer diameter sizes and working condition grade options do these Magnetic Junk Retrieval Magnets support?
Our standard production lineup fully covers outer diameters: 2-1/8", 2-1/2", 2-7/8", 3-1/8" and 3-5/8". Each OD size supports two independent working condition material grade versions for free matching selection: STD standard carbon steel working condition grade and H₂S sour service high-corrosion-resistant alloy working condition grade. All models adopt universal 1-1/2"AMMT, 2-3/8"PAC, 2-3/8"REG and NC26 bottom connection threads compatible with global mainstream coiled tubing connector assemblies and other supporting downhole wellbore cleanout workover tools. Custom internal permanent magnetic core adsorption strength and base material corrosion resistance grade specifications are available upon customer downhole wellbore fluid H₂S concentration corrosive environment construction demands.
Q4: What is the standard production lead time for bulk purchase orders?
All standard PN part numbers are kept in factory inventory, goods can be delivered within 7–15 working days. Customized magnetic junk retrieval magnets with special outer diameters or customized internal permanent magnetic core adsorption strength & base material corrosion resistance grade specifications require 20–35 working days production cycle, subject to total order quantity and customization scope.
Get Custom Datasheet & Factory Quote
We are a professional OEM & ODM manufacturer focused on full series coiled tubing heavy workover and washing downhole service tools, covering magnetic junk retrieval magnets, venturi junk baskets, flow activated releasable fishing overshots, flow activated releasable fishing spears, flow activated releasable JDC running/pulling tools, flow activated releasable GS fishing tools, bi-direction mechanical accelerators, bi-direction hydraulic accelerators, bi-direction hydraulic jars, up-stroke hydraulic jars, bi-direction mechanical jars, up-stroke mechanical jars, wireline grabs, wireline spears and all other supporting downhole fishing, jarring, anchoring and washing service tools. Every finished product undergoes strict factory tensile load, repeated magnetic adsorption load fatigue, permanent magnetic core magnetic field adsorption strength calibration, outer cylinder body acid fluid corrosion resistance performance and circulation wash nozzle fluid passage flow stability performance testing, with complete material inspection certification attached to each shipment. Please share your detailed technical requirements, including target outer diameter size, required working condition grade (STD standard carbon steel / H₂S sour service anti-corrosion alloy), downhole wellbore fluid H₂S concentration corrosive environment construction conditions, working environment and all customized specification demands. Our dedicated oilfield downhole tool engineering team will send complete detailed technical datasheets and competitive factory wholesale quotations within 24 business hours, and provide professional on-site magnetic metal debris salvage adsorption operation guidance, with clear confirmation reminder for working condition grade selection (STD standard carbon steel for non-corrosive well / H₂S sour service anti-corrosion alloy for high-sulfur corrosive well) during order placement.
