Reservoir Condition Pore-scale Imaging of Multiple Fluid Phases Using X-ray Microtomography

Overview

This article presents a methodology for imaging multiple fluid phases in rock samples under reservoir conditions using x-ray microtomography. The study highlights the process of capillary trapping in a carbonate rock sample.

Key Study Components

Area of Science

• Neuroscience
• Geoscience
• Fluid dynamics

Background

• Understanding fluid behavior in porous media is crucial for applications in carbon capture and enhanced oil recovery.
• Capillary trapping is a key phenomenon in multiphase flow within geological formations.
• Imaging techniques like micro CT provide insights into fluid distribution and saturation.
• High-pressure and high-temperature conditions mimic subsurface environments.

Purpose of Study

• To develop a non-invasive imaging technique for studying fluid phases in rock samples.
• To analyze the distribution of trapped carbon dioxide after brine injection.
• To provide a visual demonstration of the complex assembly process for researchers.

Methods Used

• Core assembly preparation and placement in a high-pressure core holder.
• Equilibration of fluids and injection into the rock's pore space.
• Micro CT imaging to visualize fluid distribution and saturation.
• Analysis of residual saturation and capillary trapping phenomena.

Main Results

• Successful imaging of multiple fluid phases under reservoir conditions.
• Demonstration of capillary trapping of supercritical carbon dioxide in carbonate rock.
• Visualization of fluid distributions using 3D renderings from micro CT scans.
• Insights into the effectiveness of the method for studying multiphase flow.

Conclusions

• The developed methodology provides valuable insights into fluid behavior in porous media.
• This technique can aid in research related to carbon capture and enhanced oil recovery.
• Visual demonstrations enhance understanding of complex experimental setups.

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