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我国最早采用现代技术开采和最早注水开发的玉门老君庙油田,在67年的开发历史中先后采用测井、油藏工程、岩心、数值模拟、水矿化度分析等方法,研究不同开发时期的剩余油分布规律。这些方法各有特点,同时又存在各自的局限性。而同位素示踪技术对注水开发过程中的油水分布关系和剩余油研究针对性更强,其原理为:对注水井注入两种同位素示踪剂,根据对应油井产出示踪剂质量浓度曲线形态的变化,以及两种示踪剂峰值质量浓度产出的时间差,以色谱分离理论与对流扩散理论为基础,应用示踪剂解释软件,进行注采对应关系分析、储集层非均质性参数确定和剩余油饱和度研究。同位素示踪技术在老君庙油田M油藏4252井组的应用,为老油田后期注水开发剩余油研究提供了一种简捷直观的有效方法。
The earliest use of modern technology in our country and the earliest water injection development Laojun Temple Oilfield, in the history of 67 years of development has been logging, reservoir engineering, core, numerical simulation, water salinity analysis methods to study different development Period of remaining oil distribution. These methods have their own characteristics, but also have their own limitations. The isotope tracing technique has more targeted research on the distribution of oil and water in the process of waterflooding and researches on remaining oil. The principle is that two kinds of isotope tracers are injected into the injection well, and according to the curve form of the mass concentration of the tracer produced by the well Changes and the time difference of peak mass concentration of two tracers, based on chromatographic separation theory and convection-diffusion theory, applying tracer interpretation software to analyze the correspondence between injection and production, determining the reservoir heterogeneity parameters And remaining oil saturation studies. The application of isotope tracing technique in M52 reservoir 4252 in Laojunmiao Oilfield provides an easy and intuitive way to study the remaining oil in later oilfield development of old oilfields.