示踪剂验证井间储层非均质性的现场应用

在古城油田B125区V2-5层系进行表面活性剂驱先导试验,注入示踪剂的目的是为了进一步了解注采井间的连通状况、平面水流方向和速度、以及油层非均质性状况。讨论了硫氰酸钠、溴化钠、磷酸二氢钠3种示踪剂在B125区的现场应用情况。在3口注水井中分别注入不同的示踪剂,在对应油井中进行示踪剂检测,根据示踪剂的检出浓度对油藏分层特性进行分析,为调剖和下一阶段注表面活性剂段塞提供了依据。

The Field Application of Tracer to Verification of the Heterogeneity of Inter-well Reservoir

The driving pilot test of surface active agent is implemented at the layers V2-5 in the area B125 of Gucheng Oilfields, in which the purposes of injecting tracers are to understand the connection states between injection- production wells, the direction and speed of plane water flowing, and the states of heterogeneity in oil reservoir. Then, the discussion is made about the application of the three tracers including sodium sulfocynanate, sodium bromide and disodium hydrogen phosphate to the worksite of the area B125. Specifically speaking, different tracers are respectively injected into 3 wells, then, followed by the tracer detection in these wells. According to the detected concentration of tracers, the analysis is given to the characteristics of oil deposit layers, providing the basis for adjusting the slug of injecting surface active agents next period.