渗吸研究中的典型问题与研究方法概述

Typical problems and research methods in the study of imbibition

在渗吸实验中,挂壁现象、门槛跳跃、马兰戈尼效应等典型问题严重影响以质量法和体积法为代表的传统实验方法的测量精度。同时传统实验方法无法对因岩心非均质性造成的液体在岩心内部分布的差异性、渗吸驱动力问题、渗吸前缘的变化规律等热点问题做出更加深入的研究与解释。因此在结合以CT技术、分子模拟技术等现代科学技术的基础上,逐渐形成了渗吸研究一体化研究方法,主要包括传统实验方法和现代科技手段一体化、微观与宏观一体化、多学科综合研究的一体化。该一体化方法理念在岩心尺度下引入了分子尺度和油藏尺度,从定性和定量两个方面研究了渗吸理论和渗吸规律,加强实验和现场应用的结合,体现当前多学科协同发展的理念和潮流,同时对渗吸研究工作的开展具有指导和借鉴意义。

In the imbibition experiment,the typical problems such as the phenomenon of the hanging wall,meniscus jump and Marangoni effect,severely restricts the precision of traditional experiments like quality or volume methods.At the same time, the traditional experimental method can make neither a deep research nor a detailed explanation on the difference of liquid distribution caused by core heterogeneity,the imbibition force, and the change of the imbibition front shape.In combination on the basis of CT technology,molecular simulation technology and modern science and technology,gradually formed the imbibition on the integration of research methods, including the integration of the traditional methods and modern technology integration,micro and macro integration,multi-disciplinary comprehensive study.The integrated methods introduces molecular scale and reservoir scale to the core experiment,which can be used to study the theory of imbibition from both the respects of quality and quantity,to strengthen the combination of experimental and field application. It is of guidance and reference for the development of imbibition study.