摘要
为了消除特殊钻井条件下钻井液中大量混入有机添加剂对荧光录井的影响,有效识别钻探过程中的油气显示,国内外录井界都在尝试一种新的录井方法定量荧光录井技术。通过近两年的试验性应用,证实定量荧光录井技术在解决上述难题上卓有成效,提高了荧光录井资料的可信度和应用范围。该文在简介了定量荧光录井技术的检测原理、方法和特点的基础上,以现场应用实例为依据,阐述了该项技术在下面几个方面的应用效果:(1)能消除钻井液污染,有效识别油气层;(2)更有利于轻质油的发现;(3)在裂缝或页岩层等特殊储层,定量荧光分析解释更有优势;(4)在识别微弱油气显示及低阻油层的评价效果较好;(5)可在现场准确判定储层原油性质;(6)为油源评价提供了一项新的解释资料。总之,定量荧光分析仪较高的检测灵敏度,较实用的分析评价软件,提高了荧光录井资料的使用价值,具有较好的推广应用前景。
In order to eliminate the affection of heavy mixing a lot of organic additive to drilling fluid on fluorescence logging under special drilling condition and distinguish effectively oil-gas show during exploration,the logging industry home and aboard are trying a new logging method-quantitative fluorescence logging technology.It is testified that the quantitative fluorescence logging has made fruitful results in solving above problem by about two years′ application.It has improved the confidential degree and application range of fluorescence logging data.On the basis of briefly introducing the measuring principle,method and characteristic,the paper elaborates the applying results of this technology in following aspects in the light of wellsite application examples.(1)eliminating drilling fluid pollution,effectively spotting oil-gas zone;(2)being suitable for finding light oil;(3)having the advantage in special reservoir such as fracture or shale;(4)having the better result in discriminating weak oil-gas show and sticking zones;(5)providing a new interpreting data for oil source and low resistivity reservoir evaluation;(6)diagonsising reservoir oil property accurately at wellsite.In brief,the higher detecting sensitivity and the practical analysing and evaluating software of quantitative fluorescence analyser prompt the application value of fluorescence logging information and it has better expanding application prospect.
关键词
定量荧光分析仪
岩屑录井
荧光录井
油气勘探
〔Quantitative fluorescence analyser〕,Cuttinglogging,Fluorescense logging,Distinguishing,Drilling fluid additive,Pollution,Oil gas exploration,Interpretation,Evaluation
