煤层气井产出水中氯离子变化规律回归分析模型  

Prediction model for the ion concentration change of co-produced water from coalbed methane wells

作　　者：朱卫平[1,2] 唐书恒[2] 王晓峰[2] 李忠诚[2] 王珊珊[2] 吴敏杰[2] 

机构地区：[1]中国石油吐哈油田公司,新疆哈密839009 [2]中国地质大学能源学院,北京100083

出　　处：《煤田地质与勘探》2012年第5期34-36,41,共4页Coal Geology & Exploration

基　　金：国家重点基础研究发展计划(973计划)项目(2009CB219604);国家科技重大专项课题(2008ZX05034-003;2008ZX05039-003)

摘　　要：基于沁水盆地枣园区块大量煤层气井产出水分析化验数据,通过数学统计方法,研究总结了产出水中氯离子浓度与排采时间的变化规律。指出排采初期氯离子对环境影响最大,远超出国家Ⅱ类饮用水标准;同时利用SPSS软件进行了非线性回归分析,建立了氯离子浓度变化数学模型。通过模型可以合理预测氯离子浓度达到国家标准所需要的时间,为煤层气井产出水水质变化监测及地面水质处理提供了技术支持。Based on the huge chemical analysis data of the produced water gathered from the CBM wells in Zaoyuan block,Qinshui basin,the change of chloride ion concentration with time was investigated by statistical methods.The results show that the chloride ion concentration far exceeds the class Ⅱ drinking water standards in the early drainage stage.Therefore,the produced water has the biggest influence on the environments in the early drainage stage.A mathematical model is established by nonlinear regression analysis using SPSS.This model can well forecast the time needed for the water to reach the state’s standards.Hence,it can provide technical support for the CBM produced water quality monitoring and treatement on ground.

关 键 词：煤层气 煤层气井产出水 离子浓度 预测模型 

分 类 号：TD741[矿业工程—矿井通风与安全]