应用稀有气体同位素判识油田水淹现象--以辽河盆地黄沙坨油田为例  

IDENTIFYING THE PHENOMENA OF WATER FLOOD IN OIL FIELDS USING NOBLE GAS ISOTOPE——EXAMPLED BY THE HUANGSHATUO OILFIELD IN THE LIAOHE BASIN

作　　者：张晓宝[1] 史朋[1,2] 马素萍[1] 李传浩[3] 戴本亮[4] 张瑞[1] 段国禄[5] 宋成鹏[1] 王宏勇[1] 

机构地区：[1]中国科学院地质与地球物理研究所气体地球化学重点实验室,兰州730000 [2]中国科学院研究生院,北京100049 [3]中国石油长庆油田公司第三采油厂,宁夏银川750006 [4]中国石油辽河油田公司采油一厂,辽宁 [5]中国石油青海油田公司勘探开发研究院,青海敦煌736202

出　　处：《石油实验地质》2009年第3期258-261,共4页Petroleum Geology & Experiment

基　　金：国家基金面上项目“稀有气体作为油气田开发示踪剂的基础理论与应用研究”资助(40472971)

摘　　要：采集了辽河盆地黄沙坨油田注水开采所利用的水源井水、处理后的水源井水、注水井水和生产井原油样品,脱附了其中的水溶气和油溶气,测量了其3He/4He,4He/20Ne和40Ar/36Ar,发现它们可以判识生产井水淹现象和水淹程度。研究表明:(1)黄沙坨油田水源井、处理后的水源井水及注水井中水3、He/4He4、He/20Ne和40Ar/36Ar均具有大气成因的特征;(2)黄沙坨油田原油40Ar/36Ar误差范围内与空气值接近,说明原油遭受了水淹,40Ar/36Ar可以成为油田遭水淹的示踪剂,但它与4He/20Ne之间没有线性关系,因此不能反映油田受水淹的程度;(3)黄沙坨油田原油4He/20Ne和3He/4He大于大气值,且两者呈较好的线性关系,说明其不但可以作为生产井油层遭受水淹的示踪剂,也可作为油层遭受水淹程度的指标。The source water for water injection, source water after procession, water of an injection well, and oil crude of a production well were sampled and degassed. The ^3He/^4He, ^4He/^20 Ne and ^40 Ar/^36Ar of the gases from the waters and oils were analyzed. We found that they can he used for identifying the phenomena and degree of water flood of a production well. Our research shows that the ^3He/^4 He, ^1He/^20Ne and ^40Ar/^36Ar of the source water for water injection, source water after procession and water of an injection well characterize an atmosphere source. The ^40Ar/^36 Ar of crude oil in the Huangshatuo oil field is near that of the air in an error range, indicating that it was flooded by water and can be usod as a tracer of water flood in an oil field, however it has no relation with ^4He/^20Ne and can not be used for reflecting the degree of water flood. The ^4He/^20 Ne and ^3He/^4 He of the oil from the Huangshatuo oil field were larger than those of air and they have a better liner relation, indicating they can be used for tracing water flood and its degree of an oil bed in a production well.

关 键 词：水淹 示踪 稀有气体 黄沙坨油田 辽河盆地 

分 类 号：TE39[石油与天然气工程—油气田开发工程]