| 基于热中子探测评价裂缝的示踪剂特性研究 |
| |
| 引用本文： | 陈前,张锋,张泉滢,王新光,邱飞,王阳,李向辉,谭海洲.基于热中子探测评价裂缝的示踪剂特性研究[J].中国石油大学学报(自然科学版),2020(2):52-57. |
| |
| 作者姓名： | 陈前 张锋 张泉滢 王新光 邱飞 王阳 李向辉 谭海洲 |
| |
| 作者单位： | 中国石油大学（华东）地球科学与技术学院;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;河南省科学院同位素研究所有限责任公司;中国石化胜利油田动态监测中心 |
| |
| 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)。 |
| |
| 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Gd 2O 3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,Gd 2O 3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 |
Tracer characteristics based on thermal neutron detection method for fractures |
| |
| CHEN Qian,ZHANG Feng,ZHANG Quanying,WANG Xinguang,QIU Fei,WANG Yang,LI Xianghui,TAN Haizhou.Tracer characteristics based on thermal neutron detection method for fractures[J].Journal of China University of Petroleum,2020(2):52-57. |
| |
| Authors: | CHEN Qian ZHANG Feng ZHANG Quanying WANG Xinguang QIU Fei WANG Yang LI Xianghui TAN Haizhou |
| |
| Institution: | (School of Geosciences in China University of Petroleum(East China),Qingdao 266580,China;Laboratory for Marine Mineral Resources,Qingdao National Laboratory for Marine Science and Technology,Qingdao 266071,China;Isotope Research Institute of Henan Academy of Sciences Company Limited,Zhengzhou 450000,China;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 Gd 2O 3 is 0.68%and 0.03%,respectively. |
| |
| Keywords: | fracture evaluation thermal neutron detection tracer content nuclear well logging Monte Carlo Simulation |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
