醇对热采添加剂在石英砂表面吸附的影响  

The Influence of Alcohol on the Adsorption of Steam Injection Additives on the Surface of Quartz

作　　者：屈撑囤[1] 

机构地区：[1]西安石油学院化学工程系

出　　处：《西安石油学院学报》1995年第1期37-39,共3页Journal of Xi'an Petroleum Institute

摘　　要：表面活性剂在多孔介质中的吸附损失是降低其驱油效率的重要因素，降低表面活性剂在多孔介质中的吸附量可提高其驱油效率．热采添加剂是一种非离子型的高分子表面活性剂，它的胶束溶液常应用于稠油油藏的蒸气吞吐或蒸气驱中．本文对胶束溶液中热采添加剂在石英砂表面的吸附及醇对吸附的影响进行了研究，结果表明：６０℃时，热采添加剂在石英砂表面的吸附达到平衡需要２０ｈ，吸附等温线不服从Ｌａｎｇｍｕｉｒ吸附等温线，平衡吸附量为１．８ｍｇ／ｇ砂．醇可使吸附量降到０．８ｍｇ／ｇ砂以下，且醇分子量低，分子中羟基数多，加入量大，吸附量低．The loss of surfactant due to adsorption in porous medium is an important factor of lowering the oil displacement efficiency. So lowering the adsorption of surfactant in porous medium can raise the efficiency of oil displacement and recovery. In this paper,the adsorption steam injection additives and influence of alcohol on the surface of quartz are studied and the following conclusions have been drawn, i. e. it takes 20 hours for the adsorption of steam injection additives on the surface of quartz to reach balance, the isothermal curve doesn't follow Langmuir isothermal and the adsorptive capacity is 1.8mg/g quartz at 60 ℃. The adsorptive capacity can be lowered to less than 0. 82mg/g quartz by adding alcohol.

关 键 词：石英砂 吸附 醇 助剂 热效驱油 注蒸汽 

分 类 号：TE357.44[石油与天然气工程—油气田开发工程]