基于示踪剂技术定量评价水驱波及系数及应用

The quantitative evaluation and application of water drive sweep coefficient based on tracer technology

目前示踪剂技术已经得到广泛应用,调剖、堵水、产能测试、煤层气开发等等都可看到示踪剂的应用,但笔者调研发现,目前应用示踪剂定量评价水驱波及系数研究相对减少。笔者结合海上油田存在测试资料少,高含水期挖潜难度大问题,通过示踪剂理论结合水驱油理论,创新提出示踪剂定量评价水驱波及系数方法,该方法结合油田实际示踪剂测试数据,实现注示踪剂井组内不同油井水驱波及系数定量评价,并根据水驱波及系数大小,明确油田挖潜方向。本文基于该方法在渤海A油田进行应用,定量评价注示踪剂井组内不同油井波及系数,并成功指导井组内关停井侧钻研究,实施后侧钻井生产效果较好,预计增加技术可采储量9.03×10~4m^3,极大改善了渤海A油田开发效果,同时本文方法也为渤海相似油田的挖潜研究提供一定借鉴意义。

At present, tracer technology has been widely used. The application of tracer can be seen in profile control, water plugging, deliverability testing and coal bed gas development. However, the author found that the research on the quantitative evaluation of water drive wave coefficient with tracer is relatively reduced. Because of few test data in offshore oilfield, and it is difficult to tap potential in high water cut stage.The method of quantitative evaluation of water drive sweep coefficient is put forward by the tracer theory combined with the theory of water drive oil. This method combines the actual tracer test data of the oilfield to realize the water drive coefficient of different oil wells in the well group of the injection tracer well group. Through quantitative evaluation, and according to the water flooding sweep coefficient, the direction of tapping the potential of oilfield is defined. Based on this method,this method is used in the Bohai A oilfield to quantitatively evaluate the water drive sweep coefficient of different wells in the injection tracer well group, and successfully guide the research on the sidetrack drilling in the well group. The effect of the sidetrack drilling well is better and the technical recoverable reserves will be increased about 9.03 ×10^4 m3, and the development effect of the Bohai A oilfield is greatly improved. At the same time, this paper has made a great improvement in the development effect of the oilfield. The method also provides some reference for the potential research of similar oilfields in Bohai.