Dendrimer Flow Improver for Paraffin Deposition
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Solution Overview
Problem
The hydrocarbon drilling and production industry faces challenges with paraffin deposition, which leads to wax formation and increased viscosity, causing equipment clogging and operational difficulties, and current dewaxing methods are expensive and inefficient.
Innovation Solution
A fluid flow improver comprising a branched dendrimer with a quaternary carbon center bonded to chain extender ligands and terminal hydroxyl groups esterified with carboxylic acid moieties is used to inhibit paraffin deposition and reduce pour point and wax appearance temperatures in hydrocarbon fluids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional dewaxing techniques are used to remove paraffin deposits, then the fluidity of hydrocarbon fluids is improved, but the processing cost increases significantly
Solution Approach 1:
The patent introduces a dendrimer-based flow improver as an intermediary substance that mediates between the paraffin molecules and the hydrocarbon fluid. The dendrimer's branched structure with terminal hydroxyl groups esterified with carboxylic acid moieties allows it to interact with paraffin molecules, preventing their aggregation and deposition while maintaining fluidity without requiring expensive thermal or mechanical dewaxing processes
Solution Approach 2:
The invention changes the chemical parameters of the hydrocarbon fluid by adding the dendrimer flow improver, which modifies the fluid's rheological properties. The dendrimer's specific molecular structure (with carboxylic acid moieties having 6-30 carbon atoms) alters the interaction between paraffin molecules and the bulk fluid, reducing viscosity and preventing deposition at lower temperatures without requiring energy-intensive processing
2Object-generated harmful factors
If thermal or mechanical methods are used to remove wax precipitates, then paraffin deposition is reduced, but the complexity of the processing system increases
Solution Approach 1:
The patent extracts the harmful function of thermal or mechanical wax removal systems by replacing them with a chemical additive approach. Instead of using complex thermal processing equipment or mechanical filtration systems, the invention introduces a dendrimer flow improver that chemically modifies the paraffin-hydrocarbon interaction, eliminating the need for complex removal infrastructure
Solution Approach 2:
The dendrimer acts as an intermediary that prevents paraffin deposition through molecular interaction rather than requiring complex thermal or mechanical systems. The branched dendritic structure with esterified carboxylic acid groups serves as a mediator between paraffin molecules and the bulk fluid, preventing aggregation and deposition in a simple additive-based approach
3Speed
If the temperature is reduced during production, then the hydrocarbon fluid flows more easily, but paraffin crystallization increases
Solution Approach 1:
The invention changes the chemical composition parameters of the fluid by adding the dendrimer flow improver, which modifies the crystallization behavior of paraffin. The dendrimer's molecular structure (with terminal hydroxyl groups esterified with carboxylic acids having 6-30 carbon atoms) alters the thermodynamic parameters of the system, allowing the fluid to maintain flowability at lower temperatures without paraffin crystallization
Solution Approach 2:
The dendrimer flow improver serves as an intermediary that prevents paraffin crystallization at low temperatures. The branched dendritic core with esterified carboxylic acid moieties interacts with paraffin molecules, disrupting their ability to form crystals while maintaining fluid flow at reduced temperatures
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 flow improver effectively reduces paraffin deposition and viscosity, improving the flowability of hydrocarbon fluids, thereby enhancing operational efficiency and reducing the need for costly dewaxing processes.
Implementation Method 1
at least one of the terminal hydroxyl groups is esterified with at least one carboxylic acid moiety comprising from 6 to 30 carbon atoms
Data Source
AI summary
Disclosed herein is a fluid flow improver comprising a branched dendritic core comprising a first quaternary carbon center bonded to four second carbon atoms, wherein at least three of the four second carbon atoms are individually bonded to one or more chain extender ligands to produce the branched dendritic core, wherein the branched dendritic core has greater than or equal to about 16 terminal hydroxyl groups, and wherein at least one of the terminal hydroxyl groups is esterified with at least one carboxylic acid moiety comprising from 6 to 30 carbon atoms. Methods of inhibiting deposition of paraffin and reducing pour point temperature of a hydrocarbon fluid are also disclosed.