聚丙烯酰胺在煤粉上的吸附性能  

Study on Adsorption Characteristic of PAM on Coal Powder

作　　者：肖庆华[1] 孙晗森 杨宇[1] 郑军[1] 冯文光[1] 

机构地区：[1]成都理工大学能源学院 [2]中联煤层气责任有限公司

出　　处：《钻井液与完井液》2013年第4期46-48,94-95,共3页Drilling Fluid & Completion Fluid

基　　金："十二五"国家重大专项"大型油气田及煤层气开发"专题"煤层气井压裂新技术研究"(2011ZX05060-002)

摘　　要：采用紫外分光光度计和静态氮吸附仪研究了聚丙烯酰胺在煤粉上的吸附量和对煤粉微观孔隙的伤害机理。主要研究了聚丙烯酰胺浓度、液固比、氯化钠含量对聚丙烯酰胺在煤粉上吸附性能的影响以及煤粉吸附聚丙烯酰胺后的比表面和孔径变化。实验结果表明,聚丙烯酰胺在煤粉上3 h时吸附可达到平衡,吸附量与聚丙烯酰胺浓度、液固比、氯化钠含量有关;煤粉吸附聚丙烯酰胺后比表面变小,部分小孔隙被堵塞,孔径为2～4 nm的孔隙相对变少。The adsorption of PAM on coal powder and the damage mechanism of micro-pores of coal powder are studied by using the UV spectrophotometer and static nitrogen adsorption analyzer.The effects of concentration of PAM,liquid-solid ratio,sodium chloride content on the adsorption and the variation of specific surface area and aperture of coal powder after PAM being adsorbed are also researched.The experimental results show that it can be balanced when the adsorption time is up to 3 h,and the amount of adsorption is related to the concentration of PAM,the sodium chloride content and the liquidsolid ratio,as well as the specific surface area is reduced and aperture between 2-4 nm is decreased relatively after PAM being adsorbed.

关 键 词：煤层气井 地层损害 聚丙烯酰胺 煤粉 吸附 比表面 

分 类 号：TE37[石油与天然气工程—油气田开发工程]