井间示踪剂技术在油田生产中的应用

The application of interwell tracer method in oilfield production.

对于注水开发的油田，井间示踪剂技术能提供油层的非均质程度、注入水的地下分配状况及流动特征等信息，已成为重要的油藏工程手段，近年来获得了迅猛的发展和广泛应用。从１９９４ 年以来，中原油田先后在６ 个采油厂８０ 多个井组进行了试验和推广，不断完善和发展了示踪剂的施工工艺、监测技术及数值分析方法，主要应用于以下４ 个方面：①结合测井资料，判断出水层位，确定堵剂类型及用量； ②识别大孔道及验证断层的密封性；③通过对油藏的再认识，指导区块调剖堵水方案的编制；④预测油藏采收率。井间示踪剂技术在中原油田取得了很好的应用效果，在确定区块综合治理措施中发挥了重要的指导作用。总结了试验过程中的一些经验和认识，认为应用井间示踪剂技术，还可决定三次采油驱油剂的用量、类型、施工参数，并可评价驱油效果，为中原油田开展下一步三次采油项目提供技术储备。

For a water flooding oilfield, interwell tracer method as a important oil reservoir engineering means, has gained rapid development and extensive application in recent years. It can feedback many reservoir informations such as heterogeneity of oil bearing formations, distribution and flowing features of injection water etc.. Since 1994, it has been under gone the experiment and application in more than 80 well groups of Zhongyuan oil field, and obtained better application efficiency. Its operational technology, monitoring technique and method of numerical analysis are successively developed and completed. This method has been applied mainly in following aspects: ①combined with the result of data of well logging to determine the water production zone and determine the type and amount of plugging agent used; ②to identify the large passageways and to certify the sealing property of a fault; ③to guide the making of a profile adjustment and water plugging program and ④predict the recovery factor of the oil reservoir. Interwell tracer technique gives a very good result of application in Zhongyuan oil field. An important guiding effect is developed in the determination of comprehensive block adjustment. A summarization of the experience and recognition in the technical process recognizes that interwell tracer method can also be applied to determine the type, amount of agents used in tertiary production and operational parameters can be used to evaluate the result of oil displacement. Thus it gives a technical reservation for the tertiary recovery which will be applied in Zhongyuan oil field.