荧光图像技术定量识别油层水淹程度  

Quantitative identification of reservoir watered-out degree by using fluorescence microscopic image technique

作　　者：文慧俭[1] 申家年[1] 耿长喜[2] 左铁秋[2] 

机构地区：[1]大庆石油学院,黑龙江大庆163318 [2]大庆油田有限责任公司地质录井分公司,黑龙江大庆163411

出　　处：《断块油气田》2007年第3期56-58,共3页Fault-Block Oil & Gas Field

摘　　要：利用岩石样品中油质沥青、胶质沥青、水等3种孔隙流体组分在荧光颜色和荧光强度上具有可分性的特点,依据荧光颜色、荧光强度和荧光发光面积的差异判断油层水淹状况。指出了注入水含量的增加所引发油质沥青和胶质沥青浓度的变化是荧光颜色、荧光强度和发光面积发生改变的主要原因,给出了岩样荧光显微图像特征随含水上升时的变化规律,并对荧光图像的荧光波长和相对强度进行了量化。根据密闭取心井资料确立了油层水淹程度的定量判别标准。实际资料处理表明,水淹层判断的符合率达到77%,具有现场推广价值。There is evidently different in that fluorescent color and fluorescent intensity of pore fluid composing of oil-asphalt,gel-asphalt and water.So the watered-out degree is judged based on the diversity of fluorescence colors,fluorescence intensity and luminescence area.This paper points out that the rejection water rising which can cause the contents of oil-asphalt,gel-asphalt dynamic changing is the mainly reason that brings variations in fluorescence colors,fluorescence intensity and luminescence area.Then the characteristics and variations of rock sample fluorescence microscopic image with water bearing ratio rising are studied and quantity standard of fluorescence wavelength and relative intensity is proposed.From this,the quantity standard to identify water flooding degree is established based on sealing core drilling well data.Actual filed data is processed by using this technique and processing result indicated that interpretation agreement rate reaches 77%,which establishes powerful theory foundation to identify watered-out degree automatically and quantitatively by using computer in the future and has an important value in field application.

关 键 词：水淹层 荧光图像 波长 相对强度 水淹程度 

分 类 号：TE341[石油与天然气工程—油气田开发工程]