煤层气水与矿井水水质对比分析-以沁水盆地为例  

Comparative Analysis of Coalbed Methane Water and Mine Water Quality-Taking Qinshui Basin as an Example

作　　者：徐延勇[1] Xu Yanyong(China United Coalbed Methane Co.Ltd.,Beijing 100011)

机构地区：[1]中联煤层气有限责任公司,北京100011

出　　处：《石化技术》2022年第6期153-155,共3页Petrochemical Industry Technology

摘　　要：煤层气水和矿井水都是重要的非常规水资源,但其赋存状态及水质不同,因此分析煤层气井水水质及矿井水质对选取处理两种非常规水的方法具有重要的意义。通过胡底工区5个煤层气井排水水质分析结果显示,煤层气水主要呈碱性,呈现高总固体溶解度、高碱度的特点。煤层气水阴离子主要以HCO_(3)^(-)为主,阳离子以Na^(+)、K^(+)离子为主。矿井水呈弱酸性,矿井水阴离子主要以HCO_(3)^(-)、SO_(4)^(2-)为主,阳离子主要以Mg^(2+)为主。由阴阳离子含量可以看出,煤层气水水质类型主要为Na、K-Cl-HCO_(3)型,而矿井水水质类型主要为Mg、Ca-SO_(4)。本次研究结果能为煤层气水和矿井水处理提供科学依据。Coalbed methane water and mine water are important unconventional water resources,but their occurrence status and water quality are different.Therefore,analysis of coalbed methane water quality and mine water quality is of great significance for the selection of two unconventional water methods.The results of water quality analysis of 5 coalbed methane wells in Hudi work area show that the coalbed methane water is mainly alkaline,showing high total solid solubility,and high alkalinity.The water anion of coalbed methane is mainly HCO_(3)^(-),and the cation is mainly Na^(+)and K^(+) ions.Mine water is weakly acidic and water anions in the mine are mainly HCO_(3)^(-) and SO_(4)^(2-),and the cations are mainly Mg^(2+).It can be seen from the content of anion and cation that the water quality of coalbed methane is mainly Na,K-Cl-HCO_(3),while the water quality of mine water is mainly Mg and Ca-SO_(4).The results of this study can provide scientific basis for coalbed methane water and mine water treatment.

关 键 词：煤层气水 矿井水 水质分析 非常规水资源 

分 类 号：TD74[矿业工程—矿井通风与安全]