Magnetized Wireline Pulling Tool for Debris-Covered Fishnecks

Solution Overview

Problem

Existing wireline systems struggle to efficiently retrieve equipment from wells due to debris obstructing the fishneck, requiring separate clean-out runs, which increases time and risk of wellbore incidents.

Innovation Solution

A wireline pulling tool equipped with a jar down female connector and a magnet to latch onto the fishneck, while a magnet on the tool attracts and removes ferromagnetic debris, allowing simultaneous retrieval and clearance in a single run.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If wireline systems use traditional retrieval methods, then equipment can be retrieved from the well, but debris on the fishneck obstructs access and requires separate clean-out runs

Engineering Contradiction:

Improveretrieval efficiencyVSAvoidoperation complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent combines the debris removal function and equipment retrieval function into a single integrated wireline tool. The tool includes a magnet for attracting ferromagnetic debris and a retrieval mechanism (such as a gripper or connector) for grasping the fishneck, allowing both cleaning and retrieval to occur during one wireline run rather than requiring separate operations.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The wireline tool is designed to perform multiple functions simultaneously: it acts as both a cleaning device (using the magnet to remove debris) and a retrieval device (using the retrieval mechanism to grasp and pull out the equipment). This multi-functionality eliminates the need for separate clean-out runs and retrieval operations.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If separate clean-out runs are performed before retrieval, then debris is removed from the fishneck, but time increases and risk of wellbore incidents increases

Engineering Contradiction:

Improvewellbore safetyVSAvoidretrieval time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent combines the debris removal function and equipment retrieval function into a single integrated wireline tool. The tool includes a magnet for attracting ferromagnetic debris and a retrieval mechanism (such as a gripper or connector) for grasping the fishneck, allowing both cleaning and retrieval to occur during one wireline run rather than requiring separate operations.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The magnet is positioned on the tool to perform preliminary debris removal as the tool approaches the fishneck, clearing the path before the retrieval mechanism engages. This preliminary cleaning action ensures that the retrieval mechanism can immediately grasp the fishneck without obstruction, eliminating the need for prior clean-out runs.

Inventive Principle:

Principle #10Preliminary action

3Productivity

If a magnet is added to the wireline tool to remove debris, then simultaneous cleaning and retrieval is possible, but device complexity increases

Engineering Contradiction:

Improveretrieval efficiencyVSAvoidtool complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The wireline tool is designed to perform multiple functions simultaneously: it acts as both a cleaning device (using the magnet to remove debris) and a retrieval device (using the retrieval mechanism to grasp and pull out the equipment). This multi-functionality eliminates the need for separate clean-out runs and retrieval operations.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The magnet on the tool automatically attracts and removes ferromagnetic debris from the fishneck as the tool approaches, without requiring external intervention or additional equipment. The tool serves itself by incorporating the debris removal capability directly into its structure, simplifying the overall operational process.

Inventive Principle:

Principle #25Self-service

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables efficient and safe removal of equipment from wells by clearing debris from the fishneck during the retrieval process, minimizing time and reducing the risk of wellbore incidents.

Implementation Method 1

a magnet disposed on an external circumferential surface of the slips. The magnet is configured to remove the debris from the fishneck as the lower end of the body approaches the fish in the well

Methodology Applied

Scientific EffectMagnetic force: Magnetism

Data Source

PatentUS12560041B1Magnetized wireline pulling tool

Publication Date: 2026.02.24 SAUDI ARABIAN OIL CO

AI summary

An apparatus includes a body having an upper end and a lower end, wherein the lower end of the body is configured to be lowered onto the fishneck of the fish, slips having a retrieval tool interface and located on the lower end of the body, and a magnet disposed on an external circumferential surface of the slips. The magnet is configured to remove the debris from the fishneck as the lower end of the body approaches the fish in the well. The retrieval tool interface is configured to engage with the fishneck when the slips are activated and after the debris is removed from the fishneck.