Encapsulated Metal-Oxide Nanoparticle Fluids for AI-Assisted WAG

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Solution Overview

Problem

The traditional water alternating gas (WAG) process for oil recovery emits carbon dioxide, a greenhouse gas contributing to global warming, and lacks efficient methods for carbon dioxide sequestration and hydrocarbon extraction.

Innovation Solution

A treatment fluid containing encapsulated metal oxide nanoparticles and surfactants is used to reduce interfacial tension and enhance hydrocarbon mobilization, while simultaneously capturing and storing carbon dioxide in the reservoir.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional water alternating gas process is used for hydrocarbon extraction, then hydrocarbon recovery is achieved, but carbon dioxide emissions contribute to global warming

Engineering Contradiction:
Improvehydrocarbon extraction yieldVSAvoidcarbon dioxide emissions
Core Design Contradiction:
ProductivityVSObject-generated harmful factors

Solution Approach 1:

The invention converts the harmful CO2 emissions into a beneficial storage mechanism by using CO2 as a displacing fluid in the WAG process. The CO2 is injected into the reservoir to mobilize hydrocarbons, then subsequently stored in the reservoir as residual gas, transforming a greenhouse gas from a harmful emission into a useful extraction agent and long-term storage medium.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The process recovers hydrocarbons using CO2 injection, then retains and stores the CO2 in the reservoir instead of releasing it to the atmosphere. The CO2 is effectively recovered from the emission stream and discarded into the geological formation for long-term sequestration, achieving both extraction and environmental benefit.

Inventive Principle:
Principle #34Discarding and recovering

2Productivity

If surfactants and nanoparticles are added to treatment fluid, then interfacial tension reduction and hydrocarbon mobilization improve, but fluid composition complexity increases

Engineering Contradiction:
Improvehydrocarbon mobilization efficiencyVSAvoidtreatment fluid composition
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The treatment fluid uses composite materials by combining surfactants with metal oxide nanoparticles. This composite approach creates synergistic effects where the surfactant reduces interfacial tension and the nanoparticles provide additional mechanisms for hydrocarbon mobilization, achieving enhanced extraction efficiency while managing fluid complexity through deliberate material design.

Inventive Principle:
Principle #40Composite materials

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

The solution improves hydrocarbon extraction yield and maximizes carbon dioxide storage, addressing environmental concerns by reducing atmospheric CO2 emissions.

Implementation Method 1

A treatment fluid containing an aqueous colloid that is formed from a first surfactant and a plurality of nanoparticles encapsulated by a second surfactant

Methodology Applied
Scientific EffectInterfacial tension reduction: Surfactant

Implementation Method 2

a plurality of nanoparticles encapsulated by a second surfactant

Methodology Applied
Scientific EffectSurfactant encapsulation: Surfactant

Implementation Method 3

an aqueous colloid that is formed from a first surfactant and a plurality of nanoparticles encapsulated by a second surfactant

Methodology Applied
Scientific EffectColloid formation: Colloid

Data Source

PatentUS12410359B2Nanoparticle fluids for an AI-assisted water alternating gas process
Publication Date: 2025.09.09 SAUDI ARABIAN OIL CO
  • US12410359B2 patent drawing
  • US12410359B2 patent drawing
  • US12410359B2 patent drawing

AI summary

A treatment fluid including an aqueous colloid containing a first surfactant and a plurality of nanoparticles encapsulated by a second surfactant. A method for preparing a treatment fluid including mixing a plurality of metallic oxide nanoparticles with a first surfactant to form an intermediate solution. A second surfactant is added to the intermediate solution to form nanoparticles encapsulated by the second surfactant. A method of extracting hydrocarbons from a well environment and storing carbon dioxide in the well environment including injecting a first amount of carbon dioxide and a first amount of a treatment fluid into a hydrocarbon reservoir via an injection well in a well environment. The treatment fluid treatment fluid including an aqueous colloid containing a first surfactant and a plurality of nanoparticles encapsulated by a second surfactant. Subsequently, determining a byproduct amount of the carbon dioxide extracted from the well environment.