核壳型荧光纳米示踪剂的油藏适应性评价  

Reservoir Adaptability Evaluation of Core-shell Fluorescent Nanotracers

作　　者：姜红瑶 秦世群 陈金建 代吉建 林波[1] 高春雨 阮潇潇 杨雨晴 柳建新[2,3] JIANG Hong-yao;QIN Shi-qun;CHEN Jin-jian;DAI Ji-jian;LIN Bo;GAO Chun-yu;RUAN Xiao-xiao;YANG Yu-qing;LIU Jian-xin(No.1 Oil Production Plant,Sinopec Henan Oilfield Branch,Nanyang Henan 474780,China;School of Petrolcum Engineering,Yangtze University,Wuhan Hubei 430100.China;Leak Prevention and Plugging Research Laboratory,National Engineering Laboratory of Oil and Gas Dilling Techmology,Wuhan Hubei 430100,China)

机构地区：[1]中国石化河南油田分公司采油一厂,河南南阳474780 [2]长江大学石油工程学院,湖北武汉430100 [3]油气钻井技术国家工程实验室防漏堵漏研究室,湖北武汉430100

出　　处：《当代化工》2022年第7期1572-1576,共5页Contemporary Chemical Industry

基　　金：湖北省自然科学基金(项目编号:2017CFB486)。

摘　　要：研究了一种用于油田开发的新型荧光纳米示踪剂的性能,该示踪剂由亲水层-隔离层-荧光物质三层核壳结构构成。研究结果表明:该示踪剂具有较宽的检测范围(5×10^(-3)~0.5 mg·L^(-1))和较高的检测精度(10^(-9)数量级);在矿化度105 mg·L^(-1)、二价离子质量浓度500 mg·L^(-1)、pH值5~9、温度75℃以内具有较小的测量误差;由于示踪剂亲水层的特性,该示踪剂在石英砂表面吸附率仅为5%,静态吸附量为0.25μg·g^(-1),且在油相中基本不溶解。因此该类型示踪剂具有油藏条件适应性好、成本低廉、施工简单、检测便利快速等特点,可实现示踪剂浓度的在线快速检测分析。The performance of a new fluorescent nano tracer for oilfield development was investigated. The tracer consists of a three-layer core-shell structure of hydrophilic layer-isolation layer-fluorescent substance. The results showed that the tracer had a wide detection range(5×10^(-3)~0.5 mg·L^(-1)) and high detection accuracy(10^(-9) order of magnitude). It had a small measurement error under a wide range of reservoir conditions: mineralization 105 mg·L^(-1),divalent ion mass concentration 500 mg·L^(-1), pH 5~9, and temperature below 75 ℃. Due to the characteristics of the hydrophilic layer of the tracer, the adsorption rate of the tracer on the surface of quartz sand was only 5%, the static adsorption amount was 0.25 μg·g^(-1), and it was basically insoluble in the oil phase. Therefore, this type of tracer has the characteristics of good adaptability to reservoir conditions, low cost, simple construction, convenient and fast detection, it can realize online rapid detection and analysis of tracer mass concentration.

关 键 词：示踪剂 荧光 纳米 核壳结构 

分 类 号：TE357[石油与天然气工程—油气田开发工程]