Downhole Plug Release for Orientation-Independent Flow Control

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Solution Overview

Problem

Existing technologies face challenges in efficiently controlling fluid flow in subterranean wells, particularly in activating or deactivating well tools like vibratory tools, due to frictional issues and energy management during drilling operations.

Innovation Solution

A downhole plug release tool is used to deploy a plug that engages with a vibratory tool to activate or deactivate it, utilizing fluid flow, orientation changes, and material degradation to ensure precise operation, independent of the well's orientation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a plug is deployed to control fluid flow in a well, then fluid flow control capability is improved, but device complexity increases

Engineering Contradiction:

Improvefluid flow control capabilityVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system is divided into separate functional components: a plug release tool deployed from surface, a plug with degradable outer layer, and a vibratory tool. This segmentation allows complex functions to be achieved through simpler, modular components that can be deployed and operated independently.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The degradable outer layer acts as an intermediary mechanism between the plug and the vibratory tool. It provides controlled release functionality without requiring complex mechanical actuators, using environmental degradation (dissolution, corrosion, melting) to trigger plug release automatically.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If traditional mechanical retention methods are used to hold the plug, then structural simplicity is maintained, but friction and energy inefficiency increase

Engineering Contradiction:

Improvestructural simplicityVSAvoidfriction and energy inefficiency

Core Design Contradiction:

Device complexityVSLoss of energy

Solution Approach 1:

Traditional mechanical retention systems are replaced with a degradable material-based retention mechanism. The outer layer degrades through dissolution, corrosion, or melting in response to environmental stimuli, eliminating the need for mechanical friction-based retention and reducing associated energy losses.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The retention mechanism relies on changing physical parameters of the outer layer material (solubility, melting point, corrosion resistance) rather than mechanical forces. By selecting materials with specific degradation characteristics, the system achieves plug release through parameter changes in response to environmental conditions.

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If the plug release mechanism depends on well orientation, then device complexity is reduced, but operational reliability decreases

Engineering Contradiction:

Improvemechanism simplicityVSAvoidoperational reliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The degradable outer layer provides a universal retention and release mechanism that functions independently of well orientation. The material degradation process (dissolution, corrosion, or melting) occurs regardless of gravitational orientation, making the system universally applicable across different well configurations and orientations.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 controlled activation and deactivation of well tools by ensuring the plug engages and disengages at desired times, reducing friction and energy inefficiencies, thereby optimizing well operations.

Implementation Method 1

The outer layer may be made of a material that degrades in response to exposure to well fluid

Methodology Applied

Scientific EffectDissolution:

Implementation Method 2

The outer layer may be made of a material that degrades in response to exposure to well fluid

Methodology Applied

Scientific EffectCorrosion:

Implementation Method 3

The outer layer may be made of a material that degrades in response to exposure to elevated downhole temperature

Methodology Applied

Scientific EffectMelting: Melting

Implementation Method 4

fluid flow can then convey the plug through one of the flow passages to the well tool

Methodology Applied

Scientific EffectFluid flow:

Data Source

PatentUS12529274B2Downhole plug deployment

Publication Date: 2026.01.20 THRU TUBING SOLUTIONS INC

AI summary

A method of deploying a plug in a subterranean well can include positioning a tool string in the well, the tool string including a plug release tool and a well tool, then releasing the plug from the plug release tool, and then operating the well tool in response to the releasing the plug. A plug release tool for use in a subterranean well can include an outer housing, and an insert secured in the outer housing, the insert including multiple longitudinally extending flow passages formed through the insert.