轻质油藏注空气低温氧化实验研究  

Experimental Study on Low Temperature Oxidation of Light Oil Reservoir by Air Injection

作　　者：张鸿[1,2] ZHANG Hong(Exploration and Development Research Institute, Liaohe Oilfield Company PetroChina,Panjin 124010, Liaoning, China;National Energy Heavy Oil R&D Center, Panjin 124010, Liaoning, China)

机构地区：[1]中国石油辽河油田分公司勘探开发研究院,辽宁盘锦124010 [2]国家能源稠(重)油开采研发中心,辽宁盘锦124010

出　　处：《承德石油高等专科学校学报》2020年第4期24-28,共5页Journal of Chengde Petroleum College

基　　金：国家科技重大专项(辽河、新疆稠油/超稠油开发技术示范工程):2016ZX05055。

摘　　要：为有效提高采收率,对辽河油田轻质油藏原油开展注空气低温氧化研究。联合运用静态低温氧化装置及气相色谱等测试手段分析低温氧化反应后气体组成和原油物理化学性质变化规律等。实验结果表明:原油注空气低温氧化过程,温度越高,氧气消耗越多,压力下降幅度越大,氧化程度越强;低温时,胶质、沥青质相对含量增大,黏度、密度增大;随着温度增高,原油轻重比增大,低温氧化反应首先从长链烷烃开始,碳链越长,越容易发生低温氧化;低温氧化以加氧反应为主,原油与氧气反应生成复杂的有机化合物。Air injection technology is a new effective EOR technology.During the low temperature oxidation of light crude oil and air carried out in Liaohe Oilfield,innovative applying methods of static low temperature oxidation devices and gas chromatography etc.The results show that the higher the temperature is,the more oxygen is consumed,the larger the pressure drop is,and the stronger the oxidation degree is;at low temperature,the relative content of gum and asphaltene increases,the viscosity and the density all increases;with the increase of temperature,the weight ratio of crude oil increases,that is to say,the longer the carbon chain is,the easier the low-temperature oxidation occurs;oxidation is dominated by oxygenation,and crude oil reacts with oxygen to form complex organic compounds.

关 键 词：注空气 轻质油藏 低温氧化 族组分 气相色谱 

分 类 号：TE357.7[石油与天然气工程—油气田开发工程]