Active Wireline Fishing Tool With Retractable Teeth for Damaged Wireline
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Solution Overview
Problem
Existing wireline fishing tools struggle to effectively grasp and retrieve severed wireline and attached tooling from wellbores, leading to increased downtime and costs due to difficulties in reaching damaged or difficult-to-catch wireline, which can disrupt hydrocarbon extraction operations.
Innovation Solution
A wireline fishing tool with side and central prongs, featuring retractable teeth, is used to radially compress and grasp the wireline, utilizing a spring mechanism to extend and retract the central prong for enhanced grip, allowing efficient retrieval of loose wireline and attached tooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional fishing tools are used to retrieve severed wireline, then the tooling and attached wireline can be recovered, but the fishing operation may fail when the wireline is in difficult-to-reach areas or severely damaged
Solution Approach 1:
The fishing tool is divided into multiple independent prongs (central prong and side prongs) that can be selectively positioned. The central prong with retractable teeth provides primary grasping capability, while side prongs with hooks provide alternative grasping points, allowing the tool to adapt to different wireline conditions and locations.
Solution Approach 2:
The central prong features a dynamic tooth mechanism that can extend and retract based on engagement needs. The teeth are movable relative to the toothed shaft, allowing them to deploy when needed for grasping and retract when not needed, providing adaptability to various wireline configurations.
2Reliability
If additional specialized technology or altered fishing tool configurations are used to retrieve difficult-to-reach wireline, then the wireline can be recovered, but wellbore downtime increases and costs increase
Solution Approach 1:
The fishing tool combines multiple functions in a single device: the centralprong with teeth for grasping, sideprongs with hooks for alternative grasping, and the ability to reach difficult areas. This multi-functional design eliminates the need for multiple specialized tools or repeated fishing operations, reducing downtime.
3Ease of operation
If conventional fishing tools are used, then simple wireline retrieval is possible, but severely damaged wireline without suitable catching points cannot be grasped
Solution Approach 1:
The fishing tool is divided into multiple independentprongs (centralprong and sideprongs) that can be selectively positioned. The centralprong with retractable teeth provides primary grasping capability, while sideprongs with hooks provide alternative grasping points, allowing the tool to adapt to different wireline conditions and locations.
Solution Approach 2:
The sideprongs with hooks act as intermediaries that can engage with difficult-to-reach or severely damaged wireline sections. These sideprongs extend laterally to reach wireline in hard-to-access areas and provide alternative grasping points when the centralprong cannot effectively engage the wireline.
Data Source
AI summary
A wireline fishing tool is disclosed including a body, a side prong extending from a lateral side of the body, and a central prong extending from a center of the body. The central prong is movable relative to the body between an extended state and a retracted state. The central prong comprises a toothed shaft retractable with respect to the body to move the central prong from the extended state to the retracted state and a tooth movable relative to the toothed shaft between a stowed state in which the tooth is disposed within the toothed shaft and a deployed state in which the tooth extends from the toothed shaft. The tooth is movable from the stowed state toward the deployed state based on the central prong moving from the extended state to the retracted state.