Associative Polymer Hydration via Pre-mixed Surfactant
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The hydration of associative polymers in aqueous media, particularly in saline solutions, is a lengthy and challenging process, especially for polymers with strong hydrophobic nature, requiring significant stirring or elevated temperatures, and is further complicated by the presence of salts, often taking several hours or overnight.
Innovation Solution
A process involving the pre-mixing of associative polymers with surfactants in a dried composition, optimizing their interaction to facilitate rapid hydration by bringing them into intimate contact with water, which can be a saline solution, significantly reducing hydration time to less than five hours, even in high ionic strength environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If associative polymers with strong hydrophobic nature are used for high temperature oil extraction applications, then the polymer's effectiveness in oil-bearing formations is improved, but the hydration process becomes significantly more difficult and time-consuming
Solution Approach 1:
The patent applies preliminary action by pre-mixing the hydrophobic polymer with surfactant in a dry state before hydration. The surfactant is incorporated into the polymer structure in advance, creating a pre-formulated composition where the surfactant is already positioned to interact with and screen hydrophobic groups during subsequent hydration, eliminating the need for lengthy post-polymerization surfactant addition and mixing processes.
Solution Approach 2:
The surfactant acts as an intermediary substance that mediates between the hydrophobic polymer and the aqueous environment. By incorporating the surfactant into the polymer structure beforehand, it serves as a built-in mediator that facilitates water penetration and polymer hydration by reducing hydrophobic interactions, thereby accelerating the hydration process while maintaining polymer effectiveness.
2Productivity
If significant stirring or elevated temperature is applied to hydrate associative polymers, then the hydration kinetics are improved, but the energy consumption and process complexity increase
Solution Approach 1:
The patent implements self-service by designing a polymer-surfactant composition that hydrates rapidly without requiring external energy input for intensive stirring or heating. The pre-incorporated surfactant enables the polymer to self-hydrate through natural water absorption, as the surfactant molecules automatically screen hydrophobic groups and facilitate water penetration into the polymer structure, eliminating the need for energy-intensive hydration processes.
3Ease of operation
If surfactants are added to improve hydration kinetics, then the hydrophobic interactions are screened and hydration should be easier, but in practice the hydration remains lengthy requiring overnight treatment
Solution Approach 1:
The patent applies merging by combining the polymer and surfactant into a single pre-formulated composition before hydration. Instead of adding surfactant separately during or after polymer preparation, the surfactant is incorporated into the polymer structure in advance, creating an integrated system where the surfactant and polymer work together as a unified entity, enabling rapid hydration that completes in hours rather than overnight.
4Adaptability or versatility
If associative polymers are hydrated in saline media such as brine or sea water, then the polymer can be used for oil extraction in saline environments, but the hydration process becomes even more difficult and lengthy
Solution Approach 1:
The patent applies preliminary action by pre-incorporating surfactant into the polymer structure before exposure to saline media. This pre-formulation ensures that the surfactant is already positioned to screen hydrophobic groups during hydration, enabling the polymer to hydrate rapidly even in the presence of salts that would otherwise interfere with water-polymer interactions and extend hydration time.
Solution Approach 2:
The surfactant serves as an intermediary that mediates between the polymer and saline environment. By being pre-incorporated into the polymer, the surfactant creates a protective interface that shields hydrophobic groups from salt interference, facilitating water penetration and rapid hydration even in challenging saline conditions such as brine or sea water, thereby enabling polymer use in oil extraction applications without prolonged hydration times.
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
This approach enables rapid hydration of associative polymers, forming effective solutions or gels for oil extraction applications, such as fracturing fluids, completion fluids, and enhanced oil recovery, by optimizing the interaction between polymers and surfactants, achieving complete hydration within two hours or less.
Implementation Method 1
surfactants bearing hydrophilic and hydrophobic groups used in sufficient amount are likely to 'screen' the amphiphilic groups of the associative polymers and therefore to reduce their hydrophobic nature
Implementation Method 2
self-associate with an aqueous medium via phenomena of phase microseparation of these hydrophobic groups
Implementation Method 3
hydration of associative polymers in an aqueous medium, namely to disperse them in an aqueous medium
Data Source
AI summary
The present invention relates to a method which allows quick and effective hydration of associative polymers, in particular those intended for use in the field of oil drilling. This method uses a specific solid formulation, which can be easily hydrated, including, in a pre-mixture, said associative polymers and surfactants capable of improving the hydration of these polymers.