吸水剖面同位素污染控制研究

以濮城油田为研究对象,分析了油田注水同位素污染产生的主要原因是同位素用量问题和吸附污染与沉淀污染。从水动力学原理出发相应的污染解决办法：合理设计同位素用量;对于因水质腐蚀而出现的吸附污染,尽量采用“降低比强度法”和“注入零强度微球法”进行控制;对于沉淀污染应根据注入水的矿化度,流动温度和选用与注入水密度相匹配的同位素微球进行控制,并提出了实施过程应注意的事项,通过实施,可以有效地控制同位素污染。

The Control of Injection Profile Isotopic Contamination

By using Pucheng Oilfield as an object of study, an analysis is carried out on the main causes of isotopic contamination induced by isotopic usage, adsorption and precipitation contaminations in oilfield water injection Starting from the concept of hydrodynamics, corresponding solution to the contaminations is found out, which includes that the isotopic usage is properly designed,the adsorption contamination caused by water corrosion would be controlled by using the methods of "reducing specific strength" and "injecting the microsphere of zero strength",precipitation contamination is controlled according to the salinity, flowing temperature of injected water and by selecting the isotopic microsphere matching the density of injected water, matters of attention are proposed Isotopic contamination would be effectively controlled in application