ASSEC Analysis of Alkylated Aromatics for Hydrocarbon Migration

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Solution Overview

Problem

Existing analytical techniques for determining hydrocarbon migration, such as GC and MS, are limited in their ability to accurately measure aromatics in petroleum samples, particularly those with low nitrogen or sulfur content, leading to inaccuracies in hydrocarbon migration analysis.

Innovation Solution

Employing aromatic-selective size exclusion chromatography (ASSEC) to analyze alkylated aromatic compounds in petroleum samples, which are inherently present in both conventional and unconventional petroleum systems, providing a high detection limit and rapid analysis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If GC and MS techniques are used to determine hydrocarbon migration, then analysis can be performed, but measurement precision of aromatics deteriorates especially in samples with low nitrogen or sulfur content

Engineering Contradiction:

Improvearomatics measurement precisionVSAvoidapplicability to low nitrogen/sulfur samples

Core Design Contradiction:

Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The patent changes the analytical parameter from nitrogen/sulfur-based detection (GC-MS) to aromatic compound distribution detection (ASSEC). By measuring the distribution of alkylated aromatic compounds instead of relying on nitrogen or sulfur heterocycles, the method achieves high measurement precision for aromatics while being universally applicable to all petroleum samples regardless of their nitrogen or sulfur content.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces the GC-MS analytical system with an ASSEC system. Instead of using gas chromatography and mass spectrometry to detect nitrogen or sulfur compounds, the invention uses size exclusion chromatography to separate and detect alkylated aromatic compounds, achieving both high precision and broad applicability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If conventional analytical techniques are used, then analysis time is extended, but productivity deteriorates due to slower analysis speed

Engineering Contradiction:

Improveanalysis speedVSAvoidanalysis time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent replaces time-consuming GC-MS analysis with faster ASSEC analysis. The size exclusion chromatography method provides rapid separation of alkylated aromatic compounds, significantly reducing analysis time while maintaining high productivity for hydrocarbon migration studies.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

ASSEC accurately determines hydrocarbon migration pathways by measuring distribution changes in alkylated aromatic compounds, enabling precise hydrocarbon migration direction mapping and reducing the risk of dry holes in drilling operations.

Implementation Method 1

aromatic-selective size exclusion chromatography (ASSEC)

Methodology Applied

Scientific EffectSize exclusion chromatography: Chromatography

Data Source

PatentUS20260036566A1Determining hydrocarbon migration direction using aromatic-selective size exclusion chromatography

Publication Date: 2026.02.05 SAUDI ARABIAN OIL CO

AI summary

Alkylated aromatic compounds are present in all hydrocarbon samples. This technology uses aromatic selective size exclusion chromatography (ASSEC) to separate the alkylated aromatic compounds from the hydrocarbon samples. The hydrocarbon samples are obtained from various geographical locations in an oil basin. The distribution of the alkylated aromatic compounds is used to determine hydrocarbon migration indicators. A change in the distribution of the alkylated aromatic compounds between the hydrocarbon samples causes a change in the hydrocarbon migration indicators. The change in the hydrocarbon migration indicators between the hydrocarbon samples is used to determine the direction or pathway of hydrocarbon migration.