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本文利用三厘米波段探测油层平面物理模型含水饱和度的分布,获得了清昕的水驱油及相反的油驱水两种过程的前缘曲线族,与巴克利—莱弗里持理论曲线一致;推导并验证了微波信号随模型的含水饱和度S_N、孔隙度φ、厚度H而成指数衰减的规律;并通过实验建立了微波接收信号vg(或1g)与sw、φ、H的关系曲线,据此曲线即可测定厚5cm以下的油层平面物理模型含水饱和度**及孔隙度的分布。其分辨率、测量误差、实用性均优于解剖法、电阻法、电容法、X射线法、同位素示踪法等。为观察油田模型注水前缘变化过程、研究驱油机理、残余油分布规律,寻求最佳注采方案(最合理的布井、最好的驱油工艺),提高油田采收率***提供了一种快速、准确、简便的实验方法。
In this paper, we use the three centimeter band to detect the distribution of water saturation in the reservoir physical model, and obtain the frontier curve family of Qingxin water flooding and opposite oil flooding, which is consistent with the Barkley-Levoli theory curve The law of exponential decay of the microwave signal with the water saturation S_N, the porosity φ and the thickness H of the model has been deduced and verified. The relationship between the received signal vg (or 1g) and sw, φ, H has been established experimentally , According to the curve to determine the thickness of 5cm below the reservoir physical model of water saturation ** and porosity distribution. Its resolution, measurement error, practicality are better than anatomical method, resistance method, capacitance method, X-ray method, isotope tracing method. In order to observe the variation process of oilfield water injection front, study the mechanism of oil displacement and the distribution of residual oil, seek the best injection scheme (the most rational well drilling and the best oil displacement technology) and improve the oil recovery *** Provide A fast, accurate and simple experimental method.