Multi-tail Hydrate Inhibitors for Pipeline Blockage Prevention
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Solution Overview
Problem
Gas hydrates form in pipelines during hydrocarbon production, causing blockages that can lead to production losses, equipment damage, and safety hazards, and existing hydrate inhibitors require high concentrations or have limited effectiveness.
Innovation Solution
Development of low-dosage hydrate inhibitors (LDHIs) comprising multiple lipophilic tails, a hydrophilic head, and a linking moiety, which inhibit the formation of gas hydrate agglomerates by preventing nucleation and agglomeration, allowing for effective inhibition at lower concentrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional hydrate inhibitors are used, then hydrate formation is inhibited, but high concentrations are required which increases cost and complexity
Solution Approach 1:
The patent changes the molecular structure parameters of hydrate inhibitors by introducing multi-tail configurations with specific hydrophobic and hydrophilic components. This structural parameter change enables the inhibitor to achieve enhanced effectiveness at lower concentrations by improving its interaction mechanism with hydrate crystals, thus resolving the contradiction between effectiveness and quantity required
Solution Approach 2:
The patent employs composite molecular structures combining multiple functional components (hydrophobic tails, hydrophilic heads, and linking moieties) into a single inhibitor molecule. This composite structure allows the molecule to simultaneously perform multiple functions: adsorption to hydrate surfaces, disruption of crystal growth, and prevention of agglomeration, thereby achieving high reliability at low concentrations
2Reliability
If existing hydrate inhibitors are used, then some protection is provided, but anti-agglomeration properties are insufficient
Solution Approach 1:
The patent segments the inhibitor molecule into distinct functional segments: hydrophobic tails for interacting with hydrocarbon phases and hydrate surfaces, hydrophilic heads for water interaction, and linking moieties connecting these components. This segmentation allows each part to perform its specific function optimally, enhancing overall anti-agglomeration effectiveness while maintaining reasonable molecular complexity
Solution Approach 2:
The patent applies local quality by赋予ing different regions of the molecule different properties: the hydrophobic tails are designed to interact with non-polar hydrate surfaces, while the hydrophilic heads interact with water molecules. This localized functional differentiation enhances the molecule's ability to prevent agglomeration at specific critical interfaces without requiring complex overall molecular architecture
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 LDHI compounds provide enhanced anti-agglomeration properties, inhibiting hydrate formation more effectively than conventional methods with smaller quantities, thus preventing pipeline blockages and ensuring safer, more reliable hydrocarbon production.
Implementation Method 1
The LDHI compounds provide enhanced anti-agglomeration properties, inhibiting hydrate formation more effectively than conventional methods
Implementation Method 2
comprising multiple lipophilic tails, a hydrophilic head, and a linking moiety, which inhibit the formation of gas hydrate agglomerates by preventing nucleation and agglomeration
Data Source
AI summary
Low-dosage hydrate inhibitor (“LDHI”) compounds comprising multiple lipophilic tails and a hydrophilic head may be employed into fluids to inhibit agglomeration of hydrates, among other things. Suitable hydrophilic heads may include quaternary or tertiary ammonium cation moieties, and combinations thereof. Such LDHI compounds in some embodiments may include reaction products of DETA and/or other amines, fatty acid(s), and, optionally, alkyl halide(s). Compounds according to some embodiments may be employed in fluids in various environments, such as a conduit penetrating a subterranean formation, or a conduit carrying fluid in an industrial setting.