荧光显微图像量化表征方法研究

Study on the method of quantitative characterization for fluorescence microscopic image

荧光显微图像技术是目前唯一直接观察岩石孔隙中油水分布状态的微观图像量化分析方法,在油水层识别及水淹层评价应用方面,已充分体现出解决储集层含水问题的技术优势。但目前该项技术应用仅限于人工定性观察、经验判断,因而制约了该项技术的发展。为了解决此难题开展了相关研究,以颜色识别描述技术、荧光显微图像技术为基础,以数学及计算机编程技术为手段,通过对以往定性描述的荧光颜色、荧光亮度等特征进行量化表征,选择原油各组分面积百分含量、波长、亮度及组分间色差等共18项参数用于评价解释,建立了油水层的定量化应用方法,并建立了油质、胶质色差与油质亮度、波长判断图板,经过85口井的试用证实,解释符合率达到87.9%。

Currently,the technique of fluorescence microscopic image is the only quantitative analysis method for directly observing oil-water distribution status in rock pores. In the aspects of oil and water layer identification and watered-out zones evaluation,the technical superiorities were adequately embodied in solving water-bearing problems. At present,it is applied in human observation and experience judgment,so that its development is restricted. In order to solve this problem,the related researches are carried out. Taking color identification and description technique and fluorescence microscopic image technique as bases and mathematical and computer programming as means,through making quantitative characterization of fluorescence color and brightness of the previous qualitative description,eighteen parameters were selected to be used in evaluation and interpretation,such as percentage of areas of each component in crude oil,wave length,brightness,chromatic difference between components and the other parameters. Therefore,the quantization method for oil-water layers and diagnostic chart of oiliness and gel chromatic difference with oiliness brightness and wave length were respectively set up,which were given trials in 85 wells,the coincidence rate has reached 87.9%.