Product Overview
The Magnetic Fishing Rod is a dedicated permanent magnetic fishing retrieval bar specially developed for coiled tubing downhole wellbore cleanout and metal cuttings/debris salvage workover operations after composite bridge plug drilling construction.
This magnetic fishing rod adopts a unique circumferential three V-shaped groove integral structural layout design; three evenly spaced full-depth V-grooves are precision machined around the outer cylindrical surface of the rod main body, high-strength permanent magnetic block assemblies are fully seated and locked inside each V-groove cavity. The V-groove design achieves two core functional advantages simultaneously: it greatly expands the total magnetic contact surface area between the permanent magnet assemblies and downhole metal cuttings/debris to improve magnetic adsorption capture efficiency, and the enclosed V-groove side wall structure firmly restrains the magnetic blocks to completely eliminate the risk of magnets loosening and falling off during wellbore tripping up/down operations. A full through-bore unobstructed internal flow passage runs straight through the entire length of the magnetic fishing rod body, enabling continuous long-duration wellbore fluid circulation and debris flushing washing operations while the tool is run into the wellbore, without needing to pull the magnetic fishing rod out of the well to complete circulation cleaning work.
Two independent working condition material grade configuration options are provided for this magnetic fishing rod to adapt to variable downhole wellbore fluid corrosive environments:
Standard grade: Manufactured from high-quality carbon steel blank, 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 blank, with excellent anti-sulfide stress cracking performance and strong resistance to acid corrosive formation fluid erosion, specially applicable to high-sulfur H₂S containing corrosive downhole wellbore construction conditions.
The Magnetic Fishing Rod 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 run the magnetic fishing rod down along the wellbore until the outer V-groove permanent magnet assemblies contact downhole metal cuttings or metal debris, and the permanent magnetic blocks will automatically generate powerful magnetic adsorption force to capture and lock metal junk fragments; meanwhile, the full through-bore internal flow passage supports continuous wellbore fluid circulation and debris flushing cleaning operations, no additional auxiliary operation steps such as drop ball delivery or shear pin impact jarring are needed, shortening wellsite operation time and reducing human error risks.
The standardized product lineup covers outer diameter sizes of 2-7/8" and 3-1/8", with fixed closed make-up length specifications, and provides two independent material grade selection options: standard grade and H₂S sour service corrosion-resistant grade. All product models are equipped with standard 2-3/8"PAC bottom connection threads for universal compatibility with mainstream coiled tubing connectors and other downhole wellbore cleanout workover service tools. Custom outer diameter, V-groove quantity, permanent magnet block magnetic 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 | Inner Diameter ID | Make-Up Length (Closed) | Working Condition Grade | Bottom Connection Thread |
|---|---|---|---|---|---|
| L3132875120 | 2-7/8" | 0.5" | 39" | STD Standard | 2-3/8" PAC |
| L3133500120 | 3-1/8" | 0.78" | 41.3" | STD Standard | 2-3/8" PAC |
| L3132875320 | 2-7/8" | 0.5" | 39" | H₂S Sour Service | 2-3/8" PAC |
| L3133500320 | 3-1/8" | 0.78" | 41.3" | H₂S Sour Service | 2-3/8" PAC |
Note: Custom outer diameter, V-groove quantity, permanent magnet block magnetic strength and base material corrosion resistance grade modification magnetic fishing rods 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 working condition grade needs to be clearly confirmed according to the downhole wellbore fluid H₂S concentration corrosive environment during order placement.
Core Features & Advantages
Unique Three Circumferential V-Groove Integral Structural Design: Three evenly spaced full-depth V-shaped grooves are precision machined around the rod outer cylinder surface, high-strength permanent magnetic blocks are fully enclosed and locked inside each V-groove cavity. The V-groove dual-function design simultaneously maximizes total magnetic contact surface area to boost metal debris adsorption capture efficiency, and the enclosed V-groove side wall baffle structure firmly restrains magnetic block assemblies to eliminate magnet loosening and drop-out risks during wellbore tripping operations.
Full Through-Bore Unobstructed Internal Flow Passage Layout: A continuous unobstructed full bore internal flow channel runs straight through the entire length of the magnetic fishing rod body, supporting long-duration uninterrupted wellbore fluid circulation and debris flushing washing operations while the tool remains run into the wellbore, eliminating the need for repeated tripping out of the well to complete circulation cleaning work and improving overall wellbore cleanout construction efficiency.
Dual Independent Working Condition Material Grade Optional Configuration: Two complete base material grade versions are provided for free independent 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 rod 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 run the magnetic fishing rod down along the wellbore until the outer V-groove permanent magnet assemblies contact downhole metal cuttings/debris, and the permanent magnetic blocks will automatically generate powerful magnetic adsorption force to capture and lock metal junk fragments; the full through-bore internal flow passage supports continuous wellbore fluid circulation and debris flushing cleaning operations without pulling the tool out of the well, 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 monolithic rod body eliminates vulnerable split assembly movable friction parts; after each metal debris salvage fishing operation, only simple surface debris cleaning of the V-groove cavities and visual inspection of permanent magnet block locking state are required, no complex disassembly, internal magnetic block replacement or spring preload adjustment maintenance procedures, greatly reducing daily maintenance labor and spare parts inventory cost.
Limited Outer Diameter Size Compatibility & Dual Material Grade Matching: Standard product series covers 2-7/8" and 3-1/8" 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 post composite plug drilling metal cuttings/debris salvage recovery intervention demands.
Single Standard Thread Compatibility: All product models are equipped with universal 2-3/8"PAC 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 one-piece forming process for rod main body and three V-groove cavities, full penetration welding of V-groove side wall baffles and rod outer cylinder, featuring outstanding circulating fluid erosion resistance, repeated magnetic adsorption load fatigue resistance and structural stability, extending long-term continuous post composite plug drilling metal cuttings/debris salvage retrieval service life for downhole coiled tubing workover operations.
Application Scenarios
1. Coiled tubing downhole post composite bridge plug drilling metal cuttings, drill metal debris salvage recovery heavy-load intervention treatments, including composite plug grinding cuttings, perforating gun metal fragments, drill bit alloy scrap metal and other metal junk fragment salvage construction operations
2. Conventional sweet crude oilfield three V-groove integral construction permanent magnetic fishing rod post composite plug drilling metal cuttings/debris salvage fishing workover service (STD Standard carbon steel working condition grade)
3. High-sulfur H₂S containing corrosive downhole wellbore construction project post composite plug drilling metal cuttings/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 post composite plug drilling metal cuttings/debris salvage recovery heavy workover intervention projects
Standard Delivery Package
Complete magnetic fishing rod integral monolithic pre-assembled unit including rod main body, three outer circumferential V-groove cavities and internal full through-bore flow passage, pre-installed permanent magnetic block assemblies locked inside each V-groove
Spare interchangeable permanent magnetic block maintenance kit with multiple magnetic strength specifications for on-site magnetic adsorption force adjustment or worn magnet replacement
Full factory inspection test report including repeated magnetic adsorption load fatigue resistance test, integral tensile load test, V-groove permanent magnet block locking stability calibration test and full through-bore internal flow passage fluid circulation flow stability performance test data
Product dimension drawing and official installation & operation instruction manual, with detailed on-site post composite plug drilling metal cuttings/debris salvage magnetic 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 fishing rod passes integral tensile load test, repeated magnetic adsorption load fatigue test, V-groove permanent magnet block locking stability calibration test and full through-bore internal flow passage fluid circulation flow stability performance test before factory delivery
Free professional technical support: Our oilfield downhole tool engineering team provides coiled tubing post composite plug drilling metal cuttings/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 permanent magnetic block wear accessories are stocked with competitive factory bulk pricing
Custom development service: Support custom outer diameters, customized V-groove quantities, permanent magnetic block magnetic strength specifications, base material corrosion resistance grade modification, bottom thread profiles and special size magnetic fishing rods based on customer technical drawings
FAQ
Q1: What is the core function of a Magnetic Fishing Rod?
The Magnetic Fishing Rod is a dedicated three V-groove integral permanent magnetic fishing retrieval bar dedicated to coiled tubing post composite plug drilling downhole metal cuttings/debris salvage fishing workover operations. It adopts unique three circumferential outer V-shaped groove structural layout, multiple high-strength permanent magnetic blocks are locked inside each V-groove cavity, the V-groove design maximizes magnetic contact area with downhole metal junk while firmly restraining magnets to prevent drop-out during tripping. A full through-bore unobstructed internal flow passage runs through the entire rod length to support continuous wellbore fluid circulation and debris flushing cleaning operations without pulling the tool out of the well. 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 salvage of composite plug grinding cuttings, perforating gun metal fragments, drill bit alloy scrap metal and other metal junk fragments after composite bridge plug drilling construction.
Q2: What three core structural advantages does this Magnetic Fishing Rod own?
1. Unique three circumferential outer V-shaped groove integral structural design, three evenly spaced full-depth V-groove cavities precision machined around the rod outer cylinder surface, high-strength permanent magnetic blocks fully enclosed and locked inside each V-groove cavity; the dual-function V-groove design simultaneously maximizes total magnetic contact surface area to boost metal debris adsorption capture efficiency, and the enclosed V-groove side wall baffle structure firmly restrains magnetic block assemblies to eliminate magnet loosening and drop-out risks during wellbore tripping operations; 2. Full through-bore unobstructed internal flow passage layout, a continuous unobstructed full bore internal flow channel runs straight through the entire length of the magnetic fishing rod body, supporting long-duration uninterrupted wellbore fluid circulation and debris flushing washing operations while the tool remains run into the wellbore, eliminating the need for repeated tripping out of the well to complete circulation cleaning work and improving overall wellbore cleanout construction efficiency; 3. Dual independent working condition material grade optional configuration & ultra-simplified wellsite operation logic, two complete base material grade versions are provided for free matching 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; the magnetic fishing rod has no complex internal movable friction components, spring energy storage assemblies or differential pressure release mechanisms, only need to run the magnetic fishing rod down along the wellbore until the outer V-groove permanent magnet assemblies contact downhole metal cuttings/debris, and the permanent magnetic blocks will automatically generate powerful magnetic adsorption force to capture and lock metal junk fragments; the full through-bore internal flow passage supports continuous wellbore fluid circulation and debris flushing cleaning operations without pulling the tool out of the well, 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 Fishing Rods support?
Our standard production lineup fully covers outer diameters: 2-7/8" and 3-1/8". 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 2-3/8"PAC bottom connection threads compatible with global mainstream coiled tubing connector assemblies and other supporting downhole wellbore cleanout workover tools. Custom V-groove quantities, permanent magnetic block magnetic strength specifications 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 fishing rods with special outer diameters or customized V-groove quantities, permanent magnetic block magnetic strength specifications & 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 fishing rods, 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, V-groove permanent magnet block locking stability calibration and full through-bore internal flow passage fluid circulation 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 post composite plug drilling metal cuttings/debris salvage magnetic 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.
