西南地区页岩气开发压裂返排液处理现状及达标排放研究

Study on the Status of Shale Gas Development Fracturing and Returning Liquid Treatment in Southwest China and Its Emission Standard

摘要: 页岩气是赋存于有机质泥页岩及其夹层中，以吸附和游离状态为主要存在方式的非常规天然气，是一种重要的非常规天然气资源，已成为油气资源领域重要的组成部分，并将成为未来很长一段时期填补天然气供应缺口的重要战略性资源，为我国经济的可持续发展提供能源保障。然而页岩气在开采的过程中需要消耗大量的淡水资源，同时又产生大量的页岩气压裂返排液废水，页岩气开采环保压力大，妥善解决页岩气开发时压裂返排液水污染问题是影响页岩气产业发展的关键。目前西南地区大量压裂返排液尚未被有效的处置，本文在调查大量的压裂返排液处置政策及处置现状基础上，提出了西南地区压裂返排液的处置方式。

Abstract: Shale gas is an unconventional natural gas that exists in organic mud shale and its interlayers and is mainly in the form of adsorption and free state. It is an important unconventional natural gas resource and has become an important component in the field of oil and gas resources. In part, it will become an important strategic resource to fill the gap in natural gas supply for a long period of time, and provide energy security for the sustainable development of China’s economy. However, in the process of mining, shale gas needs to consume a large amount of fresh water resources, and at the same time, it generates a large amount of shale gas-splitting and liquid-discharge wastewater. The shale gas mining has great environmental pressure and properly solves the fracturing flowback during shale gas development. The problem of liquid water pollution is the key to the development of the shale gas industry. At present, a large number of fracturing return fluids have not been effectively disposed of in Southwest China. On the basis of investigating a large number of fracturing return fluids disposal policies and disposal status quo, this paper puts forward the disposal methods of fracturing return fluids in Southwest China.