论文部分内容阅读
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。
Water source well water, treated water source well, injection well water and production well crude oil samples used for water injection in Huangsha Tuo Oilfield of Liaohe Basin were collected, and the water-soluble gas and oil-dissolved gas were desorbed, and the 3He / 4He, 4He / 20Ne and 40Ar / 36Ar, found that they can identify the phenomenon of flooding wells and the degree of flooding. The results show that: (1) He3He, 4He4, He / 20Ne and 40Ar / 36Ar all have the characteristics of atmospheric genesis in Huangshangtuo oilfield water well, treated water source well and injection well; (2) Huangsha Tuo The 40Ar / 36Ar error of the crude oil is close to the air value, which indicates that the crude oil has been flooded. However, 40Ar / 36Ar can become a tracer flooded by the oilfield. However, it does not have a linear relationship with 4He / 20Ne and therefore can not reflect the oilfield (3) 4He / 20Ne and 3He / 4He of crude oil in Huangshangtuo Oilfield are larger than the atmospheric value, and the two have a good linear relationship, indicating that they can not only be used as tracer , But also as an indicator of the degree of water flooding.