Reactive Index Method for Cementitious Blends

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Solution Overview

Problem

The performance of cementitious components in well treatments is unpredictable and inconsistent due to variations in reactivity, leading to undesirable properties that make them unsuitable for certain applications, especially when sourced from different locations.

Innovation Solution

A method to determine a reactive index for cementitious components by measuring a parameter and dividing it by the specific surface area, allowing for the creation of blends with optimized properties such as compressive strength, Young's Modulus, fluid loss, and thickening time, which can be used to enhance the predictability and consistency of cementing processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If cementitious components are sourced from different locations, then availability and variety increase, but performance predictability and consistency deteriorate

Engineering Contradiction:

Improveavailability of cementitious componentsVSAvoidperformance predictability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent introduces the reactive index as a new parameter to characterize cementitious components. By measuring and standardizing this parameter, the patent enables performance prediction across different sources and locations, resolving the contradiction between availability and predictability.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent establishes a feedback mechanism where the reactive index measurement informs blending decisions. This allows continuous optimization of cementitious blends to achieve target performance characteristics, ensuring consistency despite variations in component sources.

Inventive Principle:

Principle #23Feedback

2Adaptability or versatility

If cementitious components with varying reactivity are used, then material selection flexibility increases, but performance consistency deteriorates

Engineering Contradiction:

Improvematerial selection flexibilityVSAvoidperformance consistency

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent uses the reactive index parameter to quantify and control the reactivity of cementitious components. This enables systematic selection and blending of materials with different reactivities to achieve consistent performance outcomes.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs blended cementitious compositions that combine multiple components with different reactive indexes. This composite approach allows optimization of performance consistency while maintaining flexibility in material selection.

Inventive Principle:

Principle #40Composite materials

3Ease of manufacture

If no standardized reactivity measurement is used, then measurement simplicity is maintained, but performance optimization capability deteriorates

Engineering Contradiction:

Improvemeasurement simplicityVSAvoidperformance optimization

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent replaces complex performance testing with a simpler reactive index measurement that correlates to key performance parameters. This substitution maintains measurement simplicity while enabling performance optimization through the standardized metric.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS11174198B2Methods for determining reactive index for cementitious components, associated compositions, and methods of use

Publication Date: 2021.11.16 HALLIBURTON ENERGY SERVICES INC

AI summary

A variety of methods and compositions are disclosed, including, in one embodiment, a settable composition comprising: water; and a cementitious component having a calculated reactive index.