引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览次   下载 本文二维码信息
码上扫一扫!
分享到: 微信 更多
基于热中子探测评价裂缝的示踪剂特性研究
陈前1,张锋1,2,张泉滢1,王新光1,2,邱飞1,王阳1,李向辉3,谭海洲4
(1.中国石油大学(华东)地球科学与技术学院,山东青岛 266580;2.海洋国家实验室海洋矿产资源评价与探测技术功能实验室,山东青岛266071;3.河南省科学院同位素研究所有限责任公司,河南郑州 450000;4.中国石化胜利油田动态监测中心,山东东营 257000)
摘要:
针对裂缝热中子示踪探测方法,从中子双组扩散理论入手结合蒙特卡洛数值模拟方法,分析压裂前后地层热中子分布影响因素,并模拟不同类型示踪剂及含量的热中子裂缝响应规律,筛选最佳示踪剂并给出其在支撑剂中含量的上、下限。结果表明:压裂前后热中子计数变化量主要受裂缝宽度和标记支撑剂中示踪剂含量的影响;钆对裂缝宽度变化反应最灵敏,钆元素是作为标记支撑剂的最佳示踪元素;随支撑剂中Gd2O3含量的增加,热中子计数率降低,热中子计数变化量D增加;示踪剂中氧化钆的上、下限值随裂缝宽度呈指数降低,且当裂缝宽度为1.0 cm时,Gd2O3的质量分数上限为0.68%,下限为0.03%。
关键词:  压裂裂缝  热中子探测  示踪剂含量  核测井  蒙特卡洛模拟
DOI:10.3969/j.issn.1673-5005.2020.02.006
分类号:
文献标识码:A
基金项目:国家自然科学基金项目(41574119,41974127);国家科技重大专项(2017ZX05019005-005);中央高校基本科研业务费专项( 17CX02070)
Tracer characteristics based on thermal neutron detection method for fractures
CHEN Qian1, ZHANG Feng1,2, ZHANG Quanying1, WANG Xinguang1,2, QIU Fei1, WANG Yang1, LI Xianghui3, TAN Haizhou4
(1.School of Geosciences in China University of Petroleum(East China), Qingdao 266580, China;2.Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China;3.Isotope Research Institute of Henan Academy of Sciences Company Limited, Zhengzhou 450000, China;4.Shengli Oilfield Dynamic Monitoring Center, SINOPEC, Dongying 257000, China)
Abstract:
Aiming at thermal-neutron tracer detection method of fractures, the dual-group diffusion theory and Monte Carlo numerical simulation method are combined to analyze the thermal neutron characteristic distribution of the formation before and after fracturing. In addition, the fracture responses of thermal neutron count-rate to different types and content of tagged proppants were simulated. The best tracer was selected and its upper and lower limits were calculated in tagged proppants. The results show that the change in thermal neutron count before and after fracturing is mainly dominated by fracture width and the tracer content of tagged proppant. The gadolinium is the best tracer for tagged proppant, which is sensitive to the variety of fracture width. Moreover, with the increase of gadolinium oxide content in tagged proppant, the thermal neutron count-rate declines and the change of thermal neutron count rate (D) increases accordingly. The upper and lower limits of gadolinium oxide in the tracer decrease exponentially with the fracture width. When the fracture width is 1.0 cm, the upper and lower limit of Gd2O3 is 0.68% and 0.03%, respectively.
Key words:  fracture evaluation  thermal neutron detection  tracer content  nuclear well logging  Monte Carlo Simulation
版权所有 中国石油大学学报(自然科学版)编辑部 Copyright©2008 All Rights Reserved
主管单位:中华人民共和国教育部 主办单位:中国石油大学
地址: 青岛市黄岛区长江西路66号中国石油大学期刊社 邮编:266580 电话:0532-86983496 E-mail: journal@upc.edu.cn
本系统由:北京勤云科技发展有限公司设计