微波加热技术在页岩气开采中的应用研究综述

Comprehensive review of the application of microwave heating technology in shale gas extraction

近年来,随着全球能源需求不断增长,页岩气作为一种新兴油气资源在全世界范围内掀起了勘探开发热潮。页岩气传统开采方式受限于气体赋存状态和储层复杂特性难以被高效开采,因此寻求一种新型开采方式对页岩气开发具有重要的现实意义。微波加热作为一种高效、环保且可控的新型热采技术,展现出巨大的潜力和广泛的应用前景,有望成为页岩气开发中常规热采方法的理想替代。总结分析页岩气开采技术种类,对比突出微波加热技术在页岩气开采领域的发展潜力;概括微波加热的物理原理和作用机理,综述微波加热提高页岩气采收率的相关数值模拟和实验研究,阐述微波加热影响页岩气采收率的作用机理,总结微波特性(如频率、功率、加热方式)和矿物物性(如介电常数、含水率)对页岩气采收率的影响,讨论现有研究的不足进行,提出未来大规模应用微波加热方法的展望。为充分发挥微波加热技术的发展潜力,该技术需要进一步深化理论和实验研究,将尺度升级至矿场实验,全方位验证微波加热在实际储层条件下的可行性和适用性。

In recent years,spurred by the escalating global demand for energy,shale gas has ignited a worldwide surge in exploration and development,establishing itself as a burgeoning oil and gas resource.Traditional methods of shale gas extraction encounter limitations imposed by the state of gas occurrence and the intricate characteristics of reservoir complexity,posing challenges to efficient extraction.Consequently,the pursuit of a new extraction method holds paramount practical importance for the development of shale gas.Microwave heating,recognized for its efficiency,environmental friendliness,and controllability as a thermal recovery technology,has demonstrated remarkable potential and extensive application prospects,positioning itself as an ideal alternative to conventional thermal recovery methods in shale gas development.This paper furnishes a detailed summary of diverse shale gas extraction methods,critically evaluates the advantages and disadvantages of each,accentuating the developmental potential of microwave heating in the realm of shale gas extraction.Following this,a concise overview is provided of the physical principles and mechanisms governing microwave heating.Building upon this foundation,the paper presents a comprehensive review of numerical simulations and experimental research on microwave heating aimed at enhancing shale gas recovery.The paper elucidates the mechanisms through which microwave heating influences shale gas recovery,encapsulating the impacts of microwave characteristics(such as frequency,power,and heating method)and mineral properties(such as dielectric constant,water content)on shale gas recovery.It also addresses existing research limitations and outlines prospects for the future large-scale application of microwave heating methods.Despite the considerable development potential showcased by microwave heating technology,further theoretical and experimental research is imperative to scale up to field experiments,providing a holistic validation of the feasibility and applicability of microwave heating under actual reservoir conditions.