Slag Cement Compositions Using Latex Strength Enhancer

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current settable compositions used in cementing operations, such as those containing slag cement, face challenges in developing adequate compressive strength and long-term structural integrity due to the limitations of using high slag concentrations, which are also costly and time-consuming.

Innovation Solution

Incorporating a latex strength enhancer into slag compositions, along with a hydroxyl source and water, to enhance the compressive strength of slag-based settable compositions, allowing for increased slag content without compromising mechanical properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If higher concentrations of slag are used in settable compositions, then cost is reduced and sustainability is improved, but compressive strength development is insufficient and setting time is extended

Engineering Contradiction:

Improveslag concentrationVSAvoidcompressive strength

Core Design Contradiction:

Quantity of substanceVSStrength

Solution Approach 1:

The patent applies parameter changes by modifying the chemical composition parameters of the slag blend, specifically incorporating quicklime (CaO) and magnesia (MgO) at controlled concentrations. This chemical parameter adjustment enables the slag to develop adequate compressive strength while maintaining high slag content, thus resolving the contradiction between slag concentration and strength development.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite material system by blending slag with specific additives including quicklime, magnesia, and water at defined ratios. This composite approach combines the cost advantages of slag with the strength-enhancing properties of lime and magnesia, achieving both economic efficiency and mechanical performance.

Inventive Principle:

Principle #40Composite materials

2Quantity of substance

If higher concentrations of slag are used in settable compositions, then cost is reduced, but setting time is excessively extended

Engineering Contradiction:

Improveslag concentrationVSAvoidsetting time

Core Design Contradiction:

Quantity of substanceVSLoss of time

Solution Approach 1:

The patent modifies the chemical reactivity parameters by incorporating quicklime and magnesia, which accelerate the hydration and setting processes. This parameter change allows high slag content compositions to set within acceptable timeframes, resolving the contradiction between slag concentration and setting time.

Inventive Principle:

Principle #35Parameter changes

3Strength

If Portland cement is used to achieve rapid compressive strength development, then compressive strength is improved, but cost increases

Engineering Contradiction:

Improvecompressive strengthVSAvoidPortland cement content

Core Design Contradiction:

StrengthVSQuantity of substance

Solution Approach 1:

The patent replaces expensive Portland cement with a cheaper slag-based system enhanced by quicklime and magnesia additives. This substitution uses more economical materials (slag, lime, magnesia) to achieve the required strength performance, resolving the contradiction between strength development and material cost.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent develops a composite binder system combining slag, quicklime, and magnesia that provides cost-effective alternative to Portland cement. This composite material achieves comparable or superior strength characteristics at lower cost by leveraging the synergistic effects of its components.

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 latex strength enhancer significantly increases compressive strength by up to 75% compared to slag compositions without it, enabling the use of higher slag concentrations for improved mechanical properties and structural integrity in subterranean applications.

Implementation Method 1

a latex strength enhancer

Methodology Applied

Scientific EffectPolymer reinforcement:

Implementation Method 2

enhancing the compressive strength of slag compositions

Methodology Applied

Scientific EffectCompressive strength enhancement:

Implementation Method 3

a hydroxyl source

Methodology Applied

Scientific EffectHydroxyl ion activation:

Implementation Method 4

hydraulically sets or otherwise develops compressive strength

Methodology Applied

Scientific EffectCementation reaction: Chemical Bonding

Implementation Method 5

hydraulically sets or otherwise develops compressive strength

Methodology Applied

Scientific EffectHydraulic setting: Mineral Hydration

Implementation Method 6

forming an annular sheath of hardened, substantially impermeable material

Methodology Applied

Scientific EffectHardening:

Data Source

PatentUS8623794B2Slag compositions and methods of use

Publication Date: 2014.01.07 HALLIBURTON ENERGY SERVICES INC

AI summary

Methods and compositions are provided that relate to cementing operations. Methods and compositions that include a latex strength enhancer for enhancing the compressive strength of slag compositions.