页岩油气开发影响下的地下水污染风险评价方法综述

Review on Groundwater Contamination Risk Assessment Methods in Shale Oil and Gas Development

摘要:

水平钻井与水力压裂等原位开采技术的应用引发了世界页岩油气开采的热潮，但由此可能造成的地下水污染风险导致公众的强烈担忧。对页岩油气开发造成地下水污染的主要途径与风险评价方法进行了综述。在已有研究的基础上，首先介绍了页岩油气开发造成地下水污染的特征污染物、污染途径与迁移驱动力，然后综述了页岩油气开发影响下的地下水污染风险主要评价方法，指出了指数叠加法、过程模拟法和统计方法在页岩油气开发场景中的研究现状与发展方向，最后对页岩油气开发影响下的地下水污染评价方法的后续研究方向进行了展望。

Abstract:

The application of in-situ extraction techniques such as the horizontal drilling and hydraulic fracturing sparked a global shale oil and gas extraction boom， but the potential risk of the groundwater contamination has raised significant concerns among the public. In this paper， we review main pathways and risk assessment methods of the groundwater contamination associated with the shale oil and gas development. Building upon the existing research， the characteristic pollutants， contamination pathways and migration driving forces of the groundwater contamination in the shale oil and gas development are presented. Subsequently， the principal assessment methods of the groundwater contamination risk caused by the shale oil and gas development are summarized， and the research status and future directions of the index-based method， process-based method and statistical method within the shale oil and gas landscape are discussed. Finally， potential areas for future research are outlined.