Product Overview
The Wireline Grab is a multi-flexible-prong integral solid monolithic wireline salvage retrieval fishing grab specially developed for coiled tubing downhole workover salvage operations of recovering lost or broken wireline and logging cable assemblies.
This wireline fishing grab adopts an advanced one-piece integral solid monolithic structural design, eliminating split assembly seams and intermediate connecting parts, with outstanding overall structural rigidity and tensile load resistance, capable of enduring repeated upward pulling loads and downhole impact loads during wireline salvage fishing construction, resistant to long-term completion fluid and formation circulating fluid erosion. Two optional internal flexible prong quantity configurations are provided to adapt to variable downhole wireline loop dimension and fishing position conditions: 2 flexible prongs and 3 flexible prongs. Each flexible prong extends straight downward from the main body of the grab, multiple groups of sharp reverse barbs are welded onto the inner wall surface of every flexible prong to form internal catching hook structures; when the grab contacts the looped end of broken downhole wireline or logging cable during running-in operation, upward pulling load applied on coiled tubing string will drive all flexible prongs to close inward synchronously, the inner reverse barbs can reliably hook and lock the wireline loop, effectively preventing wireline slipping off during subsequent high-tension upward pulling fishing process.
The Wireline Grab 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 wireline grab down to contact the looped end of broken wireline/cable and apply upward pull load to make flexible prongs close inward and complete wireline loop locking and salvage grabbing work, without additional auxiliary operation steps such as drop ball delivery or shear pin impact jarring.
The Wireline Grab is widely applicable to all coiled tubing downhole workover construction scenarios involving salvage recovery of lost or broken wireline and logging cable assemblies, including broken electric logging cables, perforating operation steel wirelines, downhole real-time monitoring signal transmission cables and other wireline-type downhole junk components.
The standardized product lineup covers outer diameter sizes ranging from 1-11/16" to 2-7/8", with fixed closed make-up length specifications, and provides two optional internal flexible prong quantity configurations: 2 flexible prongs and 3 flexible prongs. The product is equipped with standard 1"AMMT, 1-1/2"AMMT and 2-3/8"PAC bottom connection threads for universal compatibility with mainstream coiled tubing connectors and other downhole fishing workover service tools. Custom outer diameter, flexible prong quantity and inner reverse barb specification 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 |
|---|---|---|---|---|---|
| L3161690120 | 1-11/16" | 0.2" | 24" | STD Standard | 1" AMMT |
| L3162125120 | 2-1/8" | 0.3" | 25" | STD Standard | 1-1/2" AMMT |
| L3162875120 | 2-7/8" | 0.5" | 42" | STD Standard | 2-3/8" PAC |
Note: Custom outer diameter, customized flexible prong quantity (2-prong / 3-prong) and inner reverse barb specification modification wireline grabs are available via engineering consultation. Two internal flexible prong structural configurations (2 flexible prongs / 3 flexible prongs) are optional for each outer diameter size, and flexible prong quantity can be customized according to customer downhole wireline loop dimension requirements.
Core Features & Advantages
One-Piece Robust Integral Solid Monolithic Structural Design: Compact streamlined integral mechanical layout with optimized high-strength alloy steel structural cross-section, outstanding overall structural rigidity and tensile load resistance, capable of enduring repeated upward pulling loads and downhole collision impact loads during wireline salvage fishing operations, resistant to long-term completion fluid and formation circulating fluid erosion, effectively extending service life and eliminating mechanical failure risks caused by assembly seam loosening.
Dual Optional Flexible Prong Quantity Configurations: Two complete internal flexible prong structural versions of 2 flexible prongs and 3 flexible prongs are provided for independent selection, fully matching different downhole wireline loop inner diameter dimension and fishing position construction demands: 2 flexible prong model adapts to larger wireline loop sizes and wide open wellbore fishing positions; 3 flexible prong model features three-point symmetrical clamping structure, applicable to smaller wireline loop sizes and narrow offset wellbore fishing positions, expanding applicable downhole working condition range.
Inner-Wall Welded Reverse Pointed Barbs Flexible Prong Catching Structure: Multiple groups of reverse hook-shaped sharp barbs are fully welded onto the inner surface of each downward extending flexible prong, the reverse barb geometric profile is optimized to reliably hook and lock the looped end of broken wireline or logging cable, effectively preventing wireline slipping off during high-tension upward pulling fishing process, ensuring stable wireline salvage grabbing success rate.
Simple Low-Threshold Wellsite Operation Logic: The wireline grab has no complex internal movable friction components, spring energy storage assemblies or differential pressure release mechanisms, the operation flow is highly simplified: run the grab down along the wellbore until the flexible prongs contact the looped end of broken wireline/cable, apply upward pull load on coiled tubing string to drive all flexible prongs to close inward synchronously and lock wireline loop for salvage grabbing; 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.
Ultra-Low Routine Maintenance Design: The one-piece integral solid body eliminates vulnerable split assembly movable parts, after each wireline salvage fishing operation, only simple surface completion fluid residue cleaning and inner reverse barb wear degree visual inspection are required, no complex disassembly, internal part replacement or spring preload adjustment maintenance procedures, greatly reducing daily maintenance labor and spare parts inventory cost.
Full Outer Diameter Size Compatibility & Dual Flexible Prong Matching: Standard product series covers 1-11/16", 2-1/8" and 2-7/8" outer diameter specifications, each OD size supports both 2 flexible prongs and 3 flexible prongs internal structural versions for free matching selection, fully compatible with global mainstream medium-size coiled tubing assemblies for all broken wireline/logging cable salvage recovery intervention demands.
Multi-Type Standard Thread Compatibility: All product models are equipped with universal 1"AMMT, 1-1/2"AMMT and 2-3/8"PAC bottom connection threads, realizing seamless assembly with global mainstream coiled tubing bottom-hole assemblies and other supporting downhole fishing workover tools without extra conversion subs.
Precision CNC High-Strength Alloy Steel Manufacturing: Adopts precision CNC full-body machining of high-strength wear-resistant alloy steel blank, integral one-piece forming process, full penetration welding of inner reverse barbs and flexible prong inner wall, featuring outstanding circulating fluid erosion resistance, repeated upward pulling load fatigue resistance and structural stability, extending long-term continuous broken wireline/logging cable salvage retrieval service life for downhole coiled tubing workover operations.
Application Scenarios
1. Coiled tubing downhole broken wireline, logging cable salvage recovery heavy-load intervention treatments, including broken electric logging cables, perforating operation steel wirelines, downhole real-time monitoring signal transmission cables and other wireline-type downhole junk component salvage construction operations
2. Conventional sweet crude oilfield integral solid one-piece construction multi-flexible-prong wireline salvage fishing grab broken wireline/logging cable salvage fishing workover service (STD standard service grade)
3. Downhole wireline salvage fishing heavy workover projects requiring dual 2/3 flexible prong structural selection, integral robust solid body and simple maintenance-free operation mechanism
4. Long-term continuous repeated upward pulling load safety protection for coiled tubing bottom-hole assemblies in onshore and offshore oilfield broken wireline/logging cable salvage recovery heavy workover intervention projects
Standard Delivery Package
Complete wireline grab integral one-piece pre-assembled unit including standard upper connection thread body, multiple downward extending flexible prongs and inner-wall welded reverse pointed barb assemblies
Spare interchangeable inner reverse pointed barb maintenance kit (for later wear replacement)
Full factory inspection test report including repeated upward pulling load fatigue resistance test, integral tensile load test, flexible prong closing opening stroke calibration test and inner reverse barb wireline loop locking reliability performance test data
Product dimension drawing and official installation & operation instruction manual, with detailed on-site wireline loop hooking salvage operation guidance, with clear reminder to select 2 flexible prongs or 3 flexible prongs structural version according to target wireline loop inner diameter size during order placement
Quality Warranty & After-Sales Service
Warranty Coverage: 12 months after factory shipment or 2000 cumulative upward pulling load cycles, whichever condition is reached first
Full factory inspection: Each finished wireline grab passes integral tensile load test, repeated upward pulling load fatigue test, flexible prong closing opening stroke calibration test and inner reverse barb wireline loop locking reliability performance test before factory delivery
Free professional technical support: Our oilfield downhole tool engineering team provides coiled tubing broken wireline/logging cable salvage heavy workover tool string matching, outer diameter & flexible prong quantity selection consultation free of charge
Long-term spare parts supply: All interchangeable inner reverse pointed barb wear accessories are stocked with competitive factory bulk pricing
Custom development service: Support custom outer diameters, customized flexible prong quantities (2-prong / 3-prong), inner reverse barb specification modification, bottom thread profiles and special size wireline grabs based on customer technical drawings
FAQ
Q1: What is the core function of a Wireline Grab?
The Wireline Grab is a multi-flexible-prong integral solid one-piece construction wireline salvage fishing grab dedicated to coiled tubing workover, used for salvage recovery of lost or broken wireline, logging cable assemblies. It adopts robust integral solid monolithic body design; two optional internal flexible prong structural versions are available: 2 flexible prongs and 3 flexible prongs, multiple groups of reverse hook-shaped sharp barbs are fully welded on the inner wall of each downward flexible prong to form internal catching hook structures, upward pulling load will drive flexible prongs to close inward synchronously to lock wireline loop for salvage grabbing. No complex internal movable friction components or release mechanisms are equipped, operation flow is highly simplified, widely applied for salvage of broken electric logging cables, perforating steel wirelines and other wireline-type downhole junk components.
Q2: What three core structural advantages does this Wireline Grab own?
1. One-piece robust integral solid monolithic structural design, compact streamlined integral mechanical layout with optimized high-strength alloy steel structural cross-section, outstanding overall structural rigidity and tensile load resistance, capable of enduring repeated upward pulling loads and downhole collision impact loads during wireline salvage fishing operations, resistant to long-term completion fluid and formation circulating fluid erosion, effectively extending service life and eliminating mechanical failure risks caused by assembly seam loosening; 2. Dual optional flexible prong quantity configurations of 2 flexible prongs and 3 flexible prongs, fully matching different downhole wireline loop inner diameter dimension and fishing position construction demands: 2 flexible prong model adapts to larger wireline loop sizes and wide open wellbore fishing positions; 3 flexible prong model features three-point symmetrical clamping structure, applicable to smaller wireline loop sizes and narrow offset wellbore fishing positions, expanding applicable downhole working condition range; 3. Inner-wall welded reverse pointed barbs flexible prong catching structure, multiple groups of reverse hook-shaped sharp barbs are fully welded onto the inner surface of each downward extending flexible prong, the reverse barb geometric profile is optimized to reliably hook and lock the looped end of broken wireline or logging cable, effectively preventing wireline slipping off during high-tension upward pulling fishing process, ensuring stable wireline salvage grabbing success rate.
Q3: What outer diameter sizes and flexible prong quantity options do these Wireline Grabs support?
Our standard production lineup fully covers outer diameters: 1-11/16", 2-1/8" and 2-7/8". Each OD size supports two independent internal flexible prong structural versions for free matching selection: 2 flexible prongs and 3 flexible prongs. All models adopt universal 1"AMMT, 1-1/2"AMMT and 2-3/8"PAC bottom connection threads compatible with global mainstream coiled tubing connector assemblies and other supporting downhole fishing workover tools. Custom flexible prong quantity (2-prong / 3-prong) is available according to customer downhole wireline loop inner diameter dimension requirements.
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 wireline grabs with special outer diameters or customized flexible prong quantities & inner reverse barb 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 wireline grabs, wireline spears, 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, thru tubing cutters, high expansion four-blade hydraulic anchors, annular grapple hydraulic anchors, heavy duty motorhead assemblies, concentric coiled tubing wash tools (multi-mode), concentric coiled tubing wash tools (single mode), slimline wash tools (double dart), slimline wash tools (double flapper), storm wash tools, low speed spinning jetting tools, multiple points rotary wash tools, fast rotary wash tools, conical wash tools, multi-nozzle wash tools, bull nose wash tools, big ID large bore motorhead assemblies, heavy duty integrated motorhead assemblies, big ID hydraulic disconnects, dog latch interchangeable piston hydraulic disconnects, heavy duty high torsion hydraulic retrievable disconnects, mechanical hydraulic dual-action disconnects, mechanical adjustable shear tension disconnects, dual activated dual-action circulation valves, ball activated shear pin circulation valves, burst disc pressure circulation valves, double dart dual-stage sealing check valves, double flapper dual-stage sealing check valves, big ID single flapper check valves, grapple dimple composite connectors, grub screw heavy-duty connectors, double dimple-on connectors, single dimple-on connectors, double roll-on connectors, single roll-on connectors, internal grapple connectors, external grapple connectors, logging heads and tubing hangers. Every finished product undergoes strict factory tensile load, repeated upward pulling load fatigue, flexible prong closing opening stroke calibration and inner reverse barb wireline loop locking reliability performance testing, with complete material inspection certification attached to each shipment. Please share your detailed technical requirements, including target outer diameter size, required flexible prong quantity (2-prong / 3-prong), matched target wireline loop inner diameter dimension, 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 wireline loop hooking salvage operation guidance, with clear confirmation reminder for flexible prong quantity selection (2-prong for large wireline loop / 3-prong for small wireline loop) during order placement.
