Low-Volume In-Line Filtration for Asphaltene Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for evaluating and preventing asphaltene precipitation in hydrocarbon-containing fluids during production operations are inefficient and costly, particularly in predicting and mitigating deposition issues in wells and production facilities, leading to potential blockages and production decreases.
Innovation Solution
A low-volume, in-line filtration method involving carbonaceous deposits with both inorganic and organic portions, where the organic portion is dissolved with specific solvents and the solution is filtered to capture precipitated asphaltenes, allowing for the determination of asphaltene content and solubility characteristics, enabling the selection of appropriate dispersant additives and preventative measures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional asphaltene analysis methods are used, then comprehensive evaluation of asphaltene behavior can be achieved, but the process is time-consuming and requires large sample volumes
Solution Approach 1:
The method segments the asphaltene analysis into distinct stages: (1) rapid filtration to capture asphaltenes, (2) selective dissolution of non-asphaltene organic materials using solvents with specific solubility parameters (16.8-30.0 MPa^0.5), and (3) quantitative analysis of the filtered asphaltene fraction. This segmentation enables comprehensive evaluation without requiring time-consuming traditional procedures
Solution Approach 2:
The method extracts asphaltenes from the hydrocarbon-containing fluid through filtration, separating them from other organic components. The filtered asphaltene fraction is then analyzed independently, allowing for rapid and accurate determination of asphaltene content without interference from other substances that would require additional time in traditional analysis methods
2Reliability
If traditional filtration methods are used, then asphaltene precipitation can be captured, but large volumes of fluid are required and handling becomes complex
Solution Approach 1:
The method employs porous filtration media with controlled pore sizes that are optimized to capture asphaltene particles while allowing the bulk fluid to pass through. This enables effective asphaltene precipitation capture in small sample volumes, eliminating the need for large-scale filtration systems and complex handling procedures associated with traditional methods
Solution Approach 2:
The method changes the solubility parameter of the dissolution medium to match the characteristics of non-asphaltene organic materials (16.8-30.0 MPa^0.5), enabling selective dissolution and leaving asphaltenes as a filterable residue. This parameter optimization allows reliable asphaltene analysis in minimal sample volumes while maintaining measurement accuracy
3Measurement precision
If comprehensive asphaltene analysis is performed, then accurate prediction of deposition can be achieved, but the process becomes complex and costly
Solution Approach 1:
The method introduces a solvent with a specific solubility parameter (16.8-30.0 MPa^0.5) as an intermediary substance to selectively dissolve non-asphaltene organic materials. This intermediary enables the separation and isolation of asphaltenes through simple filtration, providing accurate behavior evaluation without requiring complex analytical instrumentation or multi-step procedures
Solution Approach 2:
The method optimizes the solubility parameter of the dissolution medium to fall within the range of 16.8-30.0 MPa^0.5, which matches the solubility characteristics of non-asphaltene organic materials. This parameter selection enables selective dissolution that simplifies the analysis procedure while maintaining comprehensive evaluation of asphaltene behavior, reducing both procedural complexity and cost
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 method allows for the effective prediction and prevention of asphaltene deposition, improving fluid flow and reducing costs by enabling the selection of optimal asphaltene dispersant additives and preventative measures, thus enhancing the reliability and efficiency of production operations.
Implementation Method 1
dissolving the organic portion of the one or more carbonaceous deposits with one or more solvents having a solubility parameter of at least about 16.8 MPa0.5 and up to about 30.0 MPa0.5
Implementation Method 2
contacting the second solution with one or more alkane mobile phase solvents and capturing any precipitated asphaltenes in one or more low volume filters
Data Source
AI summary
A method includes analyzing a carbonaceous deposit for an asphaltene content from a hydrocarbon-containing fluid located in a well, a wellhead or a production line proximate the wellhead, and applying one or more preventative measures to the hydrocarbon-containing fluid located in the well, the wellhead or the production line proximate the wellhead based on the asphaltene content.