Deng Xiao, Bashir Ahmed, Kamal Muhammad Shahzad, Raza Arshad, Patil Shirish, Zhou Xianmin, Mahmoud Mohamed, Shakil Hussain Syed Muhammad
Center for Integrative Petroleum Research, King Fahd University of Petroleum & Minerals, 31261 Dhahran, Saudi Arabia.
Department of Petroleum Engineering, King Fahd University of Petroleum & Minerals, 31261 Dhahran, Saudi Arabia.
ACS Omega. 2024 Dec 5;9(50):48899-48917. doi: 10.1021/acsomega.4c07387. eCollection 2024 Dec 17.
Wetting characteristics of a hydrocarbon reservoir are generally quantified for cost-effective field development. The wetting process of rock by oil is a complex process involving reactions among compounds (rock, oil, and brine), the impact of environmental conditions (temperature, pressure, etc.), and treatment history (coring, transportation, etc.). There has not been much attention given to understanding the mechanisms causing different rock wetting states to quantify rock's wettability. This work aims to provide an in-depth insight into rock wettability influencing factors including CO & H. In addition, advanced computational approaches such as molecular dynamics simulation, computational fluid dynamics, and machine learning for wettability have also been reviewed to govern the undiscovered interactions and mechanisms of this complex process. The key observation is that the polarity of organic components (asphaltenes and long-chain acids) determines the oil wetness in crude oil. In addition, acidic polar organics dominate oil-wetting in carbonate rocks; basic polar organics are key in sandstone. Also, environmental factors such as water films, brine salinity, and pH influence wettability significantly.
为了实现经济高效的油田开发，通常需要对油气藏的润湿性进行量化。原油对岩石的润湿过程是一个复杂的过程，涉及化合物（岩石、原油和盐水）之间的反应、环境条件（温度、压力等）的影响以及处理历史（取芯、运输等）。目前，对于导致岩石呈现不同润湿状态的机制以及如何量化岩石润湿性，人们关注较少。这项工作旨在深入了解包括CO和H在内的影响岩石润湿性的因素。此外，还综述了分子动力学模拟、计算流体动力学和机器学习等先进的计算方法，以探究这一复杂过程中尚未被发现的相互作用和机制。关键观察结果是，有机成分（沥青质和长链酸）的极性决定了原油中的油湿性。此外，酸性极性有机物在碳酸盐岩的油湿过程中起主导作用；碱性极性有机物则是砂岩油湿的关键因素。此外，水膜、盐水盐度和pH值等环境因素对润湿性也有显著影响。
