Cement Activator Composition Stabilizer Polymer
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Solution Overview
Problem
Existing cement activating compositions for subterranean cementing operations often require immediate preparation and have stability issues, leading to operational disruptions and limited storage and transportation flexibility due to separation or gelling within 24 hours, which restricts their use and effectiveness.
Innovation Solution
A liquid cement activator composition comprising water, an alkali sulfate salt, a polyphosphate salt, and a stabilizer polymer that maintains homogeneity and prevents gelling for extended periods, allowing for pre-formulation and storage, and can activate cement compositions at lower temperatures, while also providing fluid loss control properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If many activating compositions are used to accelerate cement curing, then cement setting speed is improved, but the composition separates or gels within 24 hours requiring immediate preparation
Solution Approach 1:
The activating composition is prepared in advance and stored for extended periods (months to years) before use. The composition includes a stabilizer component that prevents separation and gelling during storage, allowing the cement slurry to be activated at the desired time rather than requiring immediate preparation.
Solution Approach 2:
A stabilizer component acts as an intermediary substance that prevents the activating composition from separating or gelling during storage. This stabilizer maintains the homogeneous dispersion of the composition until activation is desired, bridging the gap between preparation and use.
2Stability of the object's composition
If activating compositions are prepared immediately prior to use, then composition stability is maintained, but operational disruptions occur due to need for on-location preparation
Solution Approach 1:
The activating composition is prepared in advance and stored for extended periods (months to years) before use. The composition includes a stabilizer component that prevents separation and gelling during storage, allowing the cement slurry to be activated at the desired time rather than requiring immediate preparation.
3Duration of action of stationary object
If set-delayed cement compositions are used for extended storage, then pumpability is maintained at room temperature, but activation and curing become challenging
Solution Approach 1:
The activating composition is designed to change its parameters (reactivity, pH, temperature sensitivity) upon activation. The composition includes components that remain stable during storage but become highly reactive when activated, enabling easy activation after extended storage periods through simple triggers such as temperature increase or chemical mixing.
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 composition ensures stability and homogeneity for longer periods, enabling on-site preparation and transportation, and allows for effective activation of cements at lower temperatures, reducing operational disruptions and enhancing cementing operations by maintaining cement slurry stability and fluid loss control.
Implementation Method 1
a stabilizer polymer that maintains homogeneity and prevents gelling for extended periods
Implementation Method 2
The variable AG can be the anionic group
Implementation Method 3
an alkali sulfate salt, a polyphosphate salt... that can activate cement compositions at lower temperatures
Implementation Method 4
providing fluid loss control properties
Data Source
AI summary
Various embodiments disclosed relate to cement activator compositions for treatment of subterranean formations. In various embodiments, the present invention provides a method of treating a subterranean formation including placing in the subterranean formation a liquid cement activator composition including water, an alkali sulfate salt, a polyphosphate salt, and a stabilizer polymer.