放射性同位素示踪剂技术研究油水井间高渗透层

Radioactive Isotope Tracer to Study Crosshole High Permeabile Formation

赵永强¹ 王秀鹏² 史　田² 于秋玉² 韩红霞² 程同军²

1. 中国地质大学,武汉，2. 胜利油田有限公司临盘采油厂

Linpan Oil Production Plant , Sheng Li Oilfield Co. LTD. , Shandong 251507 , P. R. China

研究油水井间的高渗透带及大孔道对油田开发具有重要意义。现场常用的普通示踪剂只能定性监测井间高渗透带或大孔道,放射性同位素示踪剂技术主要是在水井中注入一种氚放射性同位素示踪剂,通过不同部位油井放射性示踪剂产出计算及峰值特征分析,利用解释软件处理推导出多种地层参数,在此基础上计算出油水井之间存在的高渗透层及大孔道参数,为下步注采调整方案及封堵大孔道控水稳油等工作提供可靠的依据。该技术在2 个断块开展了现场试验,均取得成功。

At the late period of development of complex and small fault-block oilfield with water flooding , the high permeabile and big pore pathes formed in cross holes lead to the low oil displacement and increasement of water cut sharply. By injecting radioactive istope tracer ,the high permeabile zones and big pore pathes can be identified. That is , a radioactive isotope tracer-deuterium is injected into the hole , based on the produced amount and it’s spike value’s properties analysis of the tracer on different locations in the hole ,with the help of interpretation software ,the various parameters are concluded , so the high permeabile formation and big pore pathes can be calculated , providing a reliable evidence for adjusting program of injection and production and plugging the big pore pathes.