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Updated: Jun 4, 2025
12:18
Pore-scale Imaging and Characterization of Hydrocarbon Reservoir Rock Wettability at Subsurface Conditions Using X-ray Microtomography
Published on: October 21, 2018
13.8K
Insights into Rock Wettability Influencing Factors: A Review
Xiao Deng1, Ahmed Bashir2, Muhammad Shahzad Kamal1,2
1Center for Integrative Petroleum Research, King Fahd University of Petroleum & Minerals, 31261 Dhahran, Saudi Arabia.
ACS Omega
|December 23, 2024
Summary
Understanding rock wettability is crucial for oil and gas development. This study details factors influencing rock-oil interactions, including organic polarity and environmental conditions, and reviews computational methods for analysis.
Area of Science:
- Petroleum Geoscience
- Reservoir Engineering
- Surface Chemistry
Background:
- Rock wettability is critical for efficient hydrocarbon recovery and field development.
- Existing research often overlooks the complex mechanisms driving rock wettability states.
- Quantifying wettability requires a deeper understanding of the interactions between rock, oil, and brine.
Purpose of the Study:
- To provide an in-depth analysis of factors influencing rock wettability in hydrocarbon reservoirs.
- To investigate the role of specific organic compounds and environmental conditions on wettability.
- To review advanced computational methods for studying wettability.
Main Methods:
- Literature review of rock wettability influencing factors.
- Analysis of organic component polarity (asphaltenes, long-chain acids).
- Review of computational techniques: molecular dynamics, computational fluid dynamics, and machine learning.
Main Results:
- The polarity of organic components, particularly asphaltenes and long-chain acids, dictates oil wetness.
- Acidic polar organics are key for oil-wetting in carbonate rocks; basic polar organics are dominant in sandstone.
- Environmental factors like water films, brine salinity, and pH significantly impact wettability.
Conclusions:
- Rock wettability is governed by a complex interplay of organic composition, rock type, and environmental conditions.
- Computational approaches offer powerful tools for elucidating undiscovered wettability mechanisms.
- Accurate wettability quantification is essential for optimizing hydrocarbon recovery strategies.
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