Slip Hanger Retrieval Tool Adapter Mechanism

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Solution Overview

Problem

The removal of wellbore components, such as slip hangers, from within a wellbore is challenging due to their location and the difficulty in securely engaging and retrieving them without damaging the components or the wellbore equipment.

Innovation Solution

A wellbore system and method that includes a slip hanger with a mechanical receptacle and an adapter with engagement members that secure the slip hanger to the adapter, facilitating its retrieval. The system also includes a running tool and adapter that couple to the slip hanger, allowing for its secure engagement and removal through a workover package.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional removal methods are used for slip hangers in wellbores, then the wellbore components can be removed, but the process is challenging and risks damage to components or wellbore equipment

Engineering Contradiction:
Improvesafe removal without damageVSAvoiddifficulty of retrieval
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

A retrieval tool with an adapter is introduced as an intermediary device between the wellbore equipment and the slip hanger. The adapter couples to the slip hanger's mechanical receptacle and provides engagement members that securely grip the slip hanger, enabling safe removal without direct manipulation that could cause damage.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The retrieval system is divided into separate functional components: a running tool for deployment, an adapter for engagement, and engagement members for secure coupling. This segmentation allows each component to be optimized for its specific function while working together to solve the retrieval challenge.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If retrieval tools are deployed to remove slip hangers, then the components can be secured and removed, but significant rig time and equipment changes are required

Engineering Contradiction:
Improveability to secure and retrieveVSAvoidrig time and equipment changes
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The adapter is designed with universal engagement capabilities that can interface with the slip hanger's mechanical receptacle and work through existing wellbore equipment configurations. This multi-functionality allows the same retrieval system to handle various slip hanger types without requiring extensive equipment changes or additional rig time.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Reliability

If engagement members extend into the mechanical receptacle, then the slip hanger is securely secured to the adapter, but the complexity of the device increases

Engineering Contradiction:
Improvesecure engagementVSAvoidstructural complexity of adapter
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The engagement members are localized to specific regions of the adapter where they interface with the mechanical receptacle. This local concentration of engagement features provides secure coupling without requiring complex structures throughout the entire adapter, maintaining simplicity in non-critical areas while ensuring reliability at the engagement interface.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS12221848B2Casing slip hanger retrieval tool system and method
Publication Date: 2025.02.11 CACTUS INTERNATIONAL LLC
  • US12221848B2 patent drawing
  • US12221848B2 patent drawing
  • US12221848B2 patent drawing

AI summary

A wellbore system includes a slip hanger arranged within a wellbore component, the slip hanger having a mechanical receptacle formed in a face of the slip hanger. The wellbore system also includes an adapter configured to couple to the slip hanger, the adapter having one or more engagement members arranged to engage the mechanical receptacle, wherein the one or more engagement members extend into the mechanical receptacle to secure the slip hanger to the adapter.