储层颗粒定量荧光实验关键影响因素分析及方法优化——以渤海海域为例  

Analysis of key influencing factors in quantitative fluorescence experiment of reservoir particles and its method optimization:a case study of Bohai Sea

作　　者：程焱 王波 宋建坤 陈容涛 徐文娟 王晓东 李晓东 王一帆 金首任 CHENG Yan;WANG Bo;SONG Jiankun;CHEN Rongtao;XU Wenjuan;WANG Xiaodong;LI Xiaodong;WANG Yifan;JIN Shouren(Engineering Technology Company of CNOOC Energy Development Co.,Ltd.,Tianjin 300452,China;Tianjin Company of CNOOC(China)Co.,Ltd.,Tianjin 300452,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300452 [2]中海石油(中国)有限公司天津分公司,天津300452

出　　处：《石油地质与工程》2024年第6期42-49,共8页Petroleum Geology and Engineering

摘　　要：针对储层定量荧光实验参数在古油藏丰度评价中频频失真的问题,根据该实验灵敏、易受荧光干扰的特性,设计了二氯甲烷萃取破碎颗粒测试实验,结合全岩分析、微量元素分析,明确辉绿岩、混合花岗岩、碳酸盐岩样品干扰物与纯包裹体QGF index比值分别为0.85~1.16、3.20~19.94、0.97~5.84。基于此,建立了储层颗粒定量荧光实验优化方法,去除了干扰物荧光附加值;同时修正QGF intensity计算范围,避免轻质、重质油气包裹体QGF index计算失真。将优化方法应用到渤海海域QHD5-B井,识别古油水界面位于3880 m,古油水层QGF index值判别标准为3.1。In response to the frequent distortion of experimental parameters of reservoir quantitative fluorescence in the evaluation of paleo-oil reservoir abundance,a dichloromethane extraction of broken particles was designed based on the sensitivity and susceptibility to fluorescence interference of this experiment.Combined with whole rock analysis and trace element analysis,it is clear that the QGF index ratio between the disturbance and pure inclusion in diabase,mixed granite and carbonate samples is 0.85~1.16,3.20~19.94 and 0.97~5.84,respectively.Based on this,the experimental optimization method of quantitative fluorescence of reservoir particles was established,and the added value of fluorescence of interferors was removed.At the same time,the calculation range of QGF intensity is modified to avoid the calculation distortion of QGF index for light and heavy oil and gas inclusions.The optimization method is applied to well QHD5-B in Bohai Sea,and the paleo oil-water interface is identified as 3880 m,and the criterion is QGF index value of 3.1.

关 键 词：QGF intensity QGF index计算失真 古油藏 干扰物荧光 油水界面 

分 类 号：P61[天文地球—矿床学]