碳酸盐中低度水引起的湿度变化的孔尺度建模
Ruoyu Li1, Kishore K Mohanty1, Qinjun Kang2
1Hildebrand Department of Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas 78712, United States.
Langmuir : the ACS journal of surfaces and colloids
|November 13, 2025
概括
低盐度水泛滥通过改变石油-水-岩石接触线的湿度来增强石油回收. 这项研究开发了一个孔尺度模型,以了解碳酸盐中的这些复杂相互作用,揭示了影响回收效率的因素.
科学领域:
- 石油工程是石油工程中的一个.
- 物理化学 物理化学
- 计算科学 计算科学
背景情况:
- 湿度的改变是增强石油回收 (EOR) 的关键.
- 低度水 (LSW) 泛滥是一种具有成本效益和环保的EOR方法.
- 在碳酸盐中,LSW在石油-水-岩石接触线上的物理化学机制尚未完全理解.
研究的目的:
- 为碳酸盐开发一个物理可扩展的,孔尺度的可湿性改变模型.
- 调查接触线动态对流体流动和石油回收的影响.
- 阐明LSW在改变湿度和增强石油回收方面的作用.
主要方法:
- 开发了一种联接多相流,溶液运输,反应和卡西-巴克斯特效应的格子博尔茨曼法 (LBM) 模型.
- 进行了理论分析,以确定三相接触线上的关键无维参数.
- 通过对油滴运动和微流体芯片模拟的实验数据验证了模型.
主要成果:
- 该模型准确地模拟了LSW驱动的湿度变化和流体动力学.
- 在碳酸微流体中,接触线吸附率在角落附近降低.
- 油的老化和高相粘度可以减轻LSW效应,而高初始和水则会增强它.
结论:
- 开发的孔尺度模型为碳酸盐中的多尺度接触线现象提供了洞察力.
- 三相接触线在湿度变化和液体动力驱动的石油回收方面发挥着至关重要的作用.
- 诸如石油老化,相位粘度和初始水和等因素显著调节了LSW洪水的有效性.
更多相关视频
12:18Pore-scale Imaging and Characterization of Hydrocarbon Reservoir Rock Wettability at Subsurface Conditions Using X-ray Microtomography
Published on: October 21, 2018
14.5K
08:02Reservoir Condition Pore-scale Imaging of Multiple Fluid Phases Using X-ray Microtomography
Published on: February 25, 2015
13.0K
相关概念视频
Porosity and Absorption of Aggregate
723
Aggregates contain pores of varying sizes; while some are completely enclosed within the particles, others open onto the surface, allowing water to penetrate. The porosity of aggregates is a major factor contributing to the overall porosity of concrete, given that aggregates constitute about three-quarters of concrete's volume.
When all pores in an aggregate are filled with water, the aggregate is considered saturated and surface-dry. If left in dry air, water will evaporate until the...
When all pores in an aggregate are filled with water, the aggregate is considered saturated and surface-dry. If left in dry air, water will evaporate until the...
723
Pore Size Distribution
423
In concrete, the pore size distribution significantly influences the material's properties. Capillary pores, markedly larger than gel pores, form a vast network within partially hydrated cement paste, reducing the concrete's strength and increasing its permeability. This heightened permeability leads to a greater risk of damage from environmental factors like freeze-thaw cycles and chemical attacks, with the extent of vulnerability also being tied to the water-to-cement ratio.
Adequate...
Adequate...
423
Osmosis and Osmotic Pressure of Solutions
45.8K
A number of natural and synthetic materials exhibit selective permeation, meaning that only molecules or ions of a certain size, shape, polarity, charge, and so forth, are capable of passing through (permeating) the material. Biological cell membranes provide elegant examples of selective permeation in nature, while dialysis tubing used to remove metabolic wastes from blood is a more simplistic technological example. Regardless of how they may be fabricated, these materials are generally...
45.8K
Entropy and Solvation
8.2K
The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ...
8.2K
Porosity in Cement Paste
424
The porosity of concrete is a measure of the void spaces within its structure. These spaces impact its strength and durability significantly. When water and cement interact, a chemical reaction called hydration creates a semi-solid paste. This paste includes combined water, making up approximately 23% of the cement's dry mass, and gel water, which fills minuscule voids known as gel pores, accounting for about 28% of the cement gel volume.
The balance of water to cement in the mix is...
The balance of water to cement in the mix is...
424
