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基于卷积神经网络与特征聚类的荧光薄片分析方法

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石油学报 2024年第3期45卷 548-558页

作者：孙歧峰李克昊段友祥张依旻宫法明中国石油大学(华东)青岛软件学院计算机科学与技术学院山东青岛266580 中国石油大学(华东)地球科学与技术学院山东青岛266580

荧光薄片是研究储层原油性质、分布特征以及孔隙结构的重要手段。但目前荧光薄片数据处理仍以人工方式为主,分析效率低且受人为因素影响。基于卷积神经网络,提出一种无监督自动分割方法。首先统计出不同组分在紫外光源激发下产生的荧光... 详细信息

荧光薄片是研究储层原油性质、分布特征以及孔隙结构的重要手段。但目前荧光薄片数据处理仍以人工方式为主,分析效率低且受人为因素影响。基于卷积神经网络,提出一种无监督自动分割方法。首先统计出不同组分在紫外光源激发下产生的荧光颜色,建立出荧光颜色图版与标准色系图谱以此确定划分标准,然后使用卷积神经网络提取出荧光图像的高级语义特征,通过相似性和连续性约束进行特征融合,通过计算与荧光色系图谱的空间距离与角度确定相似度划分类别,最终实现荧光图像中颗粒、孔隙、油质沥青、胶质沥青、沥青质沥青等组分的自动划分与定量分析。荧光薄片图像的实验证明,该方法不需要大量标记样本且总体各项平均误差较低,能够满足实际生产需求。

关键词：荧光薄片微观剩余油卷积神经网络无监督学习特征聚类

基于深度残差网络的随钻方位电磁波电阻率测井反演方法

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石油钻探技术 2024年第5期52卷 97-104页

作者：孙歧峰倪虹升岳喜洲张鹏云宫法明中国石油大学(华东)计算机科学与技术学院中海油田服务股份有限公司油田技术研究院

随钻方位电磁波电阻率测井可以提供丰富的地下信息，帮助完成储层位置确定和边界探测等任务，但常用的基于物理方程的迭代反演方法计算效率较低，在实时地质导向中受到诸多限制。为此，提出了一种基于深度残差网络的随钻方位电磁波电阻... 详细信息

随钻方位电磁波电阻率测井可以提供丰富的地下信息，帮助完成储层位置确定和边界探测等任务，但常用的基于物理方程的迭代反演方法计算效率较低，在实时地质导向中受到诸多限制。为此，提出了一种基于深度残差网络的随钻方位电磁波电阻率测井资料智能反演方法。该方法将残差块中的卷积层和池化层替换为全连接层，并使用多头注意力机制来理解输入数据的关联性，以解决非线性回归问题；通过评估模型深度和宽度，并使用贝叶斯超参数调优算法找到随钻电磁波电阻率反演方法中最优的超参数，以提高反演模型的性能。该方法在模型试验中的平均准确率达到98.5%；在实际测井资料的平均准确率达到97.2%，单点反演时间约为0.01 s。研究表明，随钻方位电磁波电阻率测井反演方法能够快速准确地反演测井资料。

关键词：深度残差网络随钻测井方位电阻率深度学习多头注意力机制反演

Logging-while-drilling formation dip interpretation based on long short-term memory

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Petroleum Exploration and Development 2021年第4期48卷 978-986页

作者： sun qifeng LI Na DUAN Youxiang LI Hongqiang TANG Haiquan College of Computer Science and Technology in China University of Petroleum Qingdao 266580China Drilling Technology Research Institute of Shengli Petroleum Engineering Corporation Limited SinopecDongying 257000China Measurement and Control Technology Research Institute of Shengli Petroleum Engineering Corporation Limited.Dongying 257000 China

Azimuth gamma logging while drilling(LWD)is one of the important technologies of geosteering but the information of real-time data transmission is limited and the interpretation is *** study proposes a method of applying artificial intelligence in the LWD data interpretation to enhance the accuracy and efficiency of real-time data *** examining formation response characteristics of azimuth gamma ray(GR)curve,the preliminary formation change position is detected based on wavelet transform modulus maxima(WTMM)method,then the dynamic threshold is determined,and a set of contour points describing the formation boundary is *** classification recognition model based on the long short-term memory(LSTM)is designed to judge the true or false of stratum information described by the contour point set to enhance the accuracy of formation ***,relative dip angle is calculated by nonlinear least square *** of azimuth gamma data and application of real-time data processing while drilling show that the method proposed can effectively and accurately determine the formation changes,improve the accuracy of formation dip interpretation,and meet the needs of real-time LWD geosteering.

关键词： logging while drilling azimuth gamma stratigraphic identification artificial intelligence long short-term memory wavelet transform

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电力线损的影响因素与治理对策分析

集成电路应用 2024年第8期41卷 340-341页

作者：孙启峰王璐玥孔凡珺国网江苏电力有限公司盐城供电分公司江苏224000

阐述在电力输送过程中电力线损的原因,包括输电系统因素、人工操作因素、运行管理因素。从提高输电系统技术水平、提升人工操作规范性、完善运行管理体系方面,探讨电力线损治理对策。

关键词：运行管理体系电力线损影响因素

ShuffleNet-based comprehensive diagnosis for insulation and mechanical faults of power equipment

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High Voltage 2021年第5期6卷 861-872页

作者： Yanxin Wang Jing Yan qifeng sun Yiming Zhao Tingliang Liu State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong UniversityXi'anShaanxi ProvinceChina School of Foreign Studies Xi'an Jiaotong UniversityXi'anShaanxi ProvinceChina

Despite the complicated fault mechanism of power equipment,with the increasing promotion and development of the Ubiquitous Power Internet of Things(UPIoT),the fault information of power equipment can be instantly saved,which makes possible intelligent diagnosis via fault *** study proposes a new method to implement comprehensive intelligent diagnosis by adopting the ShuffleNet light-weight convolution neural network(SLCNN).Considering the requirements of the UPIoT intelligent terminal,this study constructs six models,which are measured in terms of recognition accuracy,model storage,and calculation cost when applied to insulation and mechanical *** with the existing models,the SLCNN outperforms them significantly in terms of recognition accuracy,with an accuracy of 95.77%and 99.9%in insulation and mechanical fault diagnoses,*** SLCNN also demonstrates obvious advantages in other performance indicators,all of which contribute to its use in the accurate and reliable fault diagnosis of power equipment in the UPIoT ***,through comparing feature maps,it is discovered that the aliasing degree and boundary of insulation defects are not as obvious as those of mechanical faults,which means that insulation fault diagnosis is much more difficult than mechanical fault diagnosis.

关键词： fault diagnosis insulation

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电能计量误差与计量改进对策分析

集成电路应用 2024年第8期41卷 344-345页

作者：孔凡珺孙启峰王璐玥国网江苏省电力有限公司盐城供电分公司江苏224002

阐述针对电能计量误差的原因,提出降低电能计量误差改进措施,通过优化电能表的选型与维护、提升互感器的精度与可靠性、增强二次回路的设计与监控,提升计量的准确性和系统的稳定性。

关键词：电能计量计量误差计量改进二次回路

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储能技术在光伏并网发电系统中的应用

集成电路应用 2024年第8期41卷 334-335页

作者：王璐玥孔凡珺孙启峰国网江苏电力有限公司盐城供电分公司江苏224000

阐述储能技术在光伏并网发电系统中的作用,探讨储能技术在光伏并网发电系统中的应用,包括实现光伏峰谷平衡调节、支持光伏应急备用供电,以及解决光伏并网频率调控问题。

关键词：光伏并网峰谷平衡调节并网频率调控储能技术

Precise design strategies of nanomedicine for improving cancer therapeutic efficacy using subcellular targeting

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Signal Transduction and Targeted Therapy 2020年第1期5卷 279-293页

作者： Xianglei Fu Yanbin Shi Tongtong Qi Shengnan Qiu Yi Huang Xiaogang Zhao qifeng sun Guimei Lin Department of Pharmaceutics Key Laboratory of Chemical Biology(Ministry of Education)School of Pharmaceutical SciencesCheeloo College of MedicineShandong UniversityJinan 250012 ShandongChina School of Mechanical and Automotive Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353 ShandongChina The Second Hospital Cheeloo College of MedicineShandong UniversityJinan 250033 ShandongChina

Therapeutic efficacy against cancer relies heavily on the ability of the therapeutic agents to reach their final *** optimal targets of most cancer therapeutic agents are usually biological macromolecules at the subcellular level,which play a key role in ***,to improve the therapeutic efficiency of drugs,researchers need to focus on delivering not only the therapeutic agents to the target tissues and cells but also the drugs to the relevant subcellular *** this review,we discuss the most recent construction strategies and release patterns of various cancer cell subcellular-targeting nanoformulations,aiming at providing guidance in the overall design of precise ***,future challenges and potential perspectives are illustrated in the hope of enhancing anticancer efficacy and accelerating the translational progress of precise nanomedicine.

关键词： therapeutic drugs precise

Plasma Surface Modification of Li_(2)TiSiO_(5)Anode for Lithium-Ion Batteries

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Energy Engineering 2024年第10期121卷 2769-2776页

作者： Shangqi sun Lingchao Xiao qifeng Qian Yunfeng Deng School of Materials Science and Engineering Tianjin UniversityTianjin300072China School of Mechanical Engineering and Rail Transit Changzhou UniversityChangzhou213164China Zhejiang sunoren Solar Technology Co. Ltd.Haining314400China

Solving intrinsic structural problems such as low conductivity is the main challenge to promote the commercial application of Li_(2)TiSiO_(5).In this study,Li_(2)TiSiO_(5)is synthesized by the sol-gelmethod,and the surface modification of Li_(2)TiSiO_(5)is carried out at different temperatures using low-temperature plasma to enhance its lithium storage *** morphological structure and electrochemical tests demonstrate that plasma treatment can improve the degree of *** peak position of the plasma-treated Li_(2)TiSiO_(5)is shifted to a lower angle,and the shift angle increases with increasing sputtering ***_(2)TiSiO_(5)after 300 W bombardment shows excellent capacity(144.7 mA·hg^(−1)after 500 cycles at 0.1 Ag^(−1))and rate performance(140 mA·hg^(−1)at 5 Ag^(−1)).Electrochemical analysis indicates that excellent electrochemical performance is attributed to the enhancement of electronic and ionic conductivity by plasma bombardment.

关键词： Plasma Li_(2)TiSiO_(5) surface modification anode