泥页岩比表面积测定方法研究  

The determining method researching of specific surface area for mud shale

作　　者：邱正松[1] 丁锐[1] 于连香[1] 

机构地区：[1]石油大学(华东)石油工程系

出　　处：《钻井液与完井液》1999年第1期9-11,共3页Drilling Fluid & Completion Fluid

摘　　要：泥页岩比表面积与泥页岩水化特性、力学性质以及渗水性密切相关,是评价泥页岩井壁稳定性的关键参数。实验研究证明,EGME法和亚甲基蓝吸附法是重复性好、准确可靠的泥页岩比表面积测定方法。其中,亚甲基蓝法更简便易行。亚甲基蓝法测定比表面积主要与吸附时间、动静状态、岩样粒度及离子交换预处理等因素有关,特别是受亚甲基蓝溶液初始浓度的影响最显著。The specific surface area is closely related to shale waterize property, property of mechanics and weeping property. It is a key factor for evaluating borehole stability of mud shale. It shows that the EGME and methylene blue test adsorption methods are well repeating, correct and reliable testing methods of specific surface area. Among them, the methylene blue test method is more convient, it is mainly related to adsorption time, moving or still condition, sample particle size and ionic exchanging & foreprocessing factors and so on. It is apparently affected by the original concentration of methylene blue test solution.

关 键 词：泥页岩 比表面积 测定方法 研究 井眼稳定 油气井 

分 类 号：TE26[石油与天然气工程—油气井工程]