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致密油水平井声波时差测井影响因素分析及测井响应特征研究——以鄂尔多斯盆地陇东地区长7储层为例

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西北大学学报（自然科学版） 2017年第4期47卷 585-592页

作者：时建超屈雪峰雷启鸿刘建李书恒谢启超王长胜中国石油长庆油田分公司勘探开发研究院低渗透油气田勘探开发国家工程实验室陕西西安710018

声波时差是进行测井解释和储层评价的重要手段之一,但水平井测井环境有别于直井,原有的直井解释模型已不再适用于水平测井,导致水平井测井解释存在一定问题。研究认为,层状泥质、岩石各向异性、井眼轨迹与地层几何位置关系及仪器探测深... 详细信息

声波时差是进行测井解释和储层评价的重要手段之一,但水平井测井环境有别于直井,原有的直井解释模型已不再适用于水平测井,导致水平井测井解释存在一定问题。研究认为,层状泥质、岩石各向异性、井眼轨迹与地层几何位置关系及仪器探测深度等是水平井声波时差测井的主要影响因素;受砂体内层状泥质或井眼附近泥质围岩的影响,含泥质纹层或泥质条带砂岩声波时差测井出现高异常;岩石各向异性特征是造成水平井块状砂岩及泥岩声波时差测井值低于直井的主要控制因素,且泥岩的声波时差各向异性的特征强于砂岩。同时,该研究应用数理统计法建立了水平井和直井对应岩层声波时差的相关关系,可将水平井环境下的声波时差校正为直井环境下的声波时差,对测井解释和储层评价具有较好的指导意义。

关键词：鄂尔多斯盆地致密油水平井声波时差影响因素测井响应特征

Synthesis and magnetic properties of shuriken-like nickel nanoparticles

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Journal of Materials Science & Technology 2018年第5期34卷 836-841页

作者： Shengqing Liu Jiaming Mei Chen Zhang jianchao Zhang Rongrong shi Institute of Materials Science and Engineering. School of Physical Science and Technology Lanzhou University Lanzhou 730000. China Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education. Lanzhou University Lanzhou 730000 China

Shuriken-like nickel nanoparticles were successfully synthesized by a thermal decomposition method at2009 with Nickel（Ⅱ） acetylacetonate（Ni（acac）2） as the precursor and oleylamine（OAm） as the solvent and reductant,*** phase structures,morphologies and sizes,and magnetic properties of the as-synthesized nickel products were characterized in detail by using X-ray diffraction（XRD）,X-ray photoelectron spectroscopy（XPS）,field emission-scanning electron microscopy（FE-SEM）,transmission electron microscopy（TEM）,high-resolution transmission electron microscopy（HRTEM） and vibrating sample magnetometer（VSM）.Some key reaction parameters,such as the reaction time,reaction temperature and surfactants,have important influence on the morphology of the final *** pattern indicated that the products are well-crystallized face-centered cubic（fcc） nickel *** images demonstrated that the nickel nanoparticles are shuriken-like morphology with average size around150 *** mechanism of shuriken-like Ni nanoparticles（NPs） is *** magnetic hysteresis loops of shuriken-like and spherical nickel products illustrated the ferromagnetic nature at 300 K,indicating its potential applications in magnetic storage.

关键词： Nickel Shuriken-like Magnetic Thermal decomposition

6 MW级燃气轮机机组试验台排气消音系统设计分析

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现代制造技术与装备 2023年第5期59卷 118-120,124页

作者：朱峰于凯杰史健超江涛于晓峰中海石油(中国)有限公司天津分公司天津300459 中海油能源发展装备技术有限公司天津300452

燃气轮机是海上平台的主要能源供给设备,其运行的稳定性对平台的安全生产极为重要。目前,进口燃气轮机的维修、测试大多被国外厂家垄断,维修成本高、等待时间长,因此建立燃气轮机自主维修测试体系非常有必要。文章对某型号6 MW级燃气轮... 详细信息

燃气轮机是海上平台的主要能源供给设备,其运行的稳定性对平台的安全生产极为重要。目前,进口燃气轮机的维修、测试大多被国外厂家垄断,维修成本高、等待时间长,因此建立燃气轮机自主维修测试体系非常有必要。文章对某型号6 MW级燃气轮机测试试验台的排气消音系统进行设计分析,简要介绍了其流场分析、噪声计算过程及保温层厚度计算过程,并结合分析结果总结了排气消音系统设计优化的方向。

关键词：燃气轮机海上平台排气消音系统

Multi-Scale Prediction of RUL and SOH for Lithium-Ion Batteries Based on WNN-UPF Combined Model

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Chinese Journal of Electronics 2021年第1期30卷 26-35页

作者： JIA Jianfang WANG Keke PANG Xiaoqiong shi Yuanhao WEN Jie ZENG jianchao School of Electrical and Control Engineering North University of China School of Data Science and Technology North University of China

The prediction of Remaining useful life(RUL) and the estimation of State of health(SOH) are extremely important issues for operating performance of Lithium-ion(Li-ion) batteries in the Battery management system(BMS). A multi-scale prediction approach of RUL and SOH is presented, which combines Wavelet neural network(WNN) with Unscented particle filter(UPF)model. The capacity degradation data of Li-ion batteries are decomposed into the low-frequency degradation trend and high-frequency fluctuation components by Discrete wavelet transform(DWT). Based on the WNN-UPF model, the long-term RUL of Li-ion batteries is predicted with the low-frequency degradation trend data. The high-frequency fluctuation data and RUL prediction results are integrated effectively to estimate the short-term SOH of Li-ion batteries. The experimental results show that the proposed method achieves high accuracy and strong robustness, even if the prediction starting point is set to the early stage of Li-ion batteries’ lifespan.

关键词： low-frequency degradation trend data WNN-UPF model Kalman filters high-frequency fluctuation components secondary cells RUL prediction results prediction starting point short-term SOH high-frequency fluctuation data remaining life assessment multiscale prediction approach wavelet neural nets particle filtering (numerical methods) Unscented particle filter model power engineering computing WNN-UPF combined model battery management systems capacity degradation data Lithium-ion batteries discrete wavelet transforms long-term RUL Battery management system Li-ion batteries

不同水源特征水库中溶解性有机物的光学特性对比

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净水技术 2024年第5期43卷 61-70页

作者：孙贤鹏赵燕景杨永锐史建超刘旭阳青岛市排水运营服务中心山东青岛266000 青岛市海润自来水集团有限公司山东青岛266000 烟台大学土木工程学院山东烟台264003 青岛百发海水淡化有限公司山东青岛266041

为考察A水库(“引黄工程”水源水库)与B水库(普通类型水库)的溶解性有机物(DOM)在相对分子质量大小、组成特征及来源方面的差异,采用紫外-可见光谱技术以及三维荧光光谱技术结合平行因子分析法,针对A水库和B水库水体中DOM的吸收参数特... 详细信息

为考察A水库(“引黄工程”水源水库)与B水库(普通类型水库)的溶解性有机物(DOM)在相对分子质量大小、组成特征及来源方面的差异,采用紫外-可见光谱技术以及三维荧光光谱技术结合平行因子分析法,针对A水库和B水库水体中DOM的吸收参数特征和荧光特征进行了研究。结果显示:A水库和B水库的DOM均有较强的自生源特征,但两水库的DOM在组成特征和来源上存在一定差异。B水库样本中存在长波类腐殖质C1(E_(x)=350 nm,E_(m)=454 nm)、类色氨酸物质C2(E_(x)=300 nm,E_(m)=361 nm)和类色氨酸C3(E_(x)=220 nm/250 nm,E_(m)=347 nm)3个荧光组分,而A水库样本中存在长波类腐殖质C1、类色氨酸物质C2两个荧光组分,说明A水库的组成特征相对更加简单。DOM吸收参数特征分析显示,A水库水质状况良好,其DOM相对分子质量较大,主要来自自生源;而B水库处于富营养状态,其DOM相对分子质量较小,富里酸成分和水体芳香性较高,水生环境中维管束植物输入较为丰富,主要来自入库河流和自生源。光谱指标差异性分析显示,A水库DOM外源输入比例小于B水库,同时A水库的水质污染源更多以陆源输入为主。研究揭示了水库中DOM的光学特性,可反映水库的环境污染程度和富营养化程度,为进一步探究DOM在不同水源特征水库的环境行为特征及水库水质保护等提供参考。

关键词：引黄工程水源水库溶解性有机物(DOM) 三维荧光光谱紫外-可见光谱技术平行因子分析

Ecotourism Potential: A Bibliometric Review

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Chinese Journal of Urban and Environmental Studies 2023年第3期11卷 39-59页

作者： shi Shanshan LI Mi XI jianchao Key Laboratory of Regional Sustainable Development Modeling Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences University of Chinese Academy of Sciences School of Management Zhengzhou University

Ecotourism potential is a fundamental research effort needed to promote sustainable regional tourism development, and scholars have paid greater attention to it in recent years, which has led to an increase in the publication of literature on this important and widely recognized ***, there is still no clear picture of the development direction of research on ecotourism potential. To address this issue, this study attempts to provide a comprehensive analysis of the existing research state in this field. This paper presents a more detailed review of ecotourism potential, a bibliometric analysis of 949 articles selected from 1,027 publications retrieved from the Web of Science Core Collection database, and a systematic descriptive and network analysis of the bibliometric data using the Biblioshiny tool. Here are some interesting findings:(1)research on the ecotourism potential in the academy started in 1992, with a rapid growth in the number of publications after 2013, with an overall interdisciplinary character and the emergence of a research community represented by Milcu, Balmford, Gallagher, and others;(2) ecotourism,conservation, tourism, management, and biodiversity are high-frequency keywords in this field,revealing the main research directions;(3) the development and evolution of research focus are mainly on three aspects: wildlife and biodiversity conservation, nature-based tourism and environmental values, and the modes and contributions of community participation. Future research should focus on the scientific references of ecotourism potential for promoting regional sustainable development. This paper sheds some light on the comprehensive bibliometric studies on ecotourism potential and improves our understanding of the evolution of this academic discourse theme over the last three decades.

关键词： Bibliometric methods ecotourism potential sustainable development

基于地震属性智能融合的湖相重力流沉积致密砂岩储层预测

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石油科学通报 2023年第1期8卷 1-11页

作者：万晓龙刘瑞璟时建超李伟麻书玮李桢李士祥岳大力吴胜和中国石油大学(北京)油气资源与探测国家重点实验室北京102249 中国石油大学(北京)地球科学学院北京102249 中国石油长庆油田分公司第十一采油厂西安710299 中国石油长庆油田分公司勘探开发研究院西安710018

湖相重力流是目前沉积学研究的热点与难点,也是致密油、页岩油富集的有利场所,鄂尔多斯盆地庆城油田三叠系延长组作为致密油、页岩油的典型代表已显示出巨大的勘探开发前景。然而,由于湖相重力流砂体分布认识不清,导致油田并未达到预期... 详细信息

湖相重力流是目前沉积学研究的热点与难点,也是致密油、页岩油富集的有利场所,鄂尔多斯盆地庆城油田三叠系延长组作为致密油、页岩油的典型代表已显示出巨大的勘探开发前景。然而,由于湖相重力流砂体分布认识不清,导致油田并未达到预期的开发效率。本文采用支持向量机(SVR)的机器学习方法,先优选频段再优选属性,建立分频属性与测井解释砂体厚度的非线性映射关系,实现了致密砂岩的定量预测。研究结果表明,低频地震属性适合预测厚层砂体,高频地震属性适合预测薄层砂体;采用机器学习的方法,将不同频率的地震属性智能融合,能够兼顾预测不同厚度砂体,既提高了地震属性的解释精度,又降低了地震解释的多解性,实现了砂体厚度的定量预测。检验结果显示,智能融合属性与砂体厚度的分布趋势与值域区间基本一致,智能融合属性预测砂体分布的可靠性明显提高,与测井解释砂体厚度的相关性由0.60提高至0.79,大多数井点处预测的砂体厚度误差小于5 m。继而,根据融合属性与测井解释,刻画了研究区的沉积微相展布特征:研究区目的层发育湖底扇沉积,细分为分支水道、朵叶主体、朵叶侧缘、滑塌体与朵叶间/水道间5种沉积微相;砂体主体呈扇形连片式沉积,厚度顺物源方向逐渐减薄;分支水道呈窄条带状树形分叉,下切发育于朵叶体之上;朵叶体沉积为研究区的沉积主体;滑塌体为湖底扇前端失稳滑塌形成的小规模孤立砂体,长轴方向多平行于湖底扇前端。研究成果对油田下一步高效开发具有重要意义。

关键词：地震属性智能融合储层预测致密砂岩湖相重力流

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水淹层电阻率变化规律研究

测井技术 2017年第4期41卷 428-432页

作者：冷先刚张志国陈建文蒲磊吴小宁时建超长庆油田分公司第十二采油厂地质研究所甘肃合水745400 长庆油田勘探开发研究院陕西西安710021 长庆油田苏里格研究中心陕西西安710021

注水开发油藏加密调整井测井解释准确率不高,部分高电阻率油层解释成果与试油结论不相符合,影响剩余油分布规律研究和剩余油挖潜措施效果。制约水淹层测井解释精度的关键因素是混合地层水电阻率及水淹层电阻率变化规律,研究了混合水地... 详细信息

注水开发油藏加密调整井测井解释准确率不高,部分高电阻率油层解释成果与试油结论不相符合,影响剩余油分布规律研究和剩余油挖潜措施效果。制约水淹层测井解释精度的关键因素是混合地层水电阻率及水淹层电阻率变化规律,研究了混合水地层电阻率及水淹层电阻率随着含水饱和度增大的变化规律。在建立混合水电阻率模型基础上,通过理论分析和数值模拟,讨论不同因素影响下水淹层电阻率的变化规律,以期提高水淹层解释精度和加密调整区块的开发效果。

关键词：测井解释水淹层混合地层水电阻率原始地层水注入水矿化度

Phase Structure, Microstructure and Electrical Properties of K_xNa_((1-x))NbO_3 Piezoelectric Ceramics with Different K/Na Ratio

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Journal of Wuhan University of Technology(Materials Science) 2019年第1期34卷 30-34页

作者： CHEN jianchao ZHAO Pei Key Laboratory for Green Chemical Process of Ministry of Education Hubei Key Laboratory of Plasma Chemistry and Advanced Materials School of Material Science and Engineering Wuhan Institute of Technology Faculty of Materials and Chemistry China University of Geosciences State Key Laboratory of Geological Process and Mineral Resources China University of Geosciences

The K_xNa_((1-x))NbO_3(x=0.45, 0.46, 0.47, 0.48, 0.49, 0.50) lead-free piezoelectric ceramics was fabricated by conventional solid-state sintering method. It was found that the ratio of alkaline metal would affect the microstructure, bulk density, and optimum sintering temperatures of ceramics. Meanwhile, the electrical properties were also influenced by modulating the K/Na ratio, exhibiting corresponding composition-dependent properties. The optimum electrical properties of K_xNa_((1-x))NbO_3 such as piezoelectric constant d_(33) = 115 pC/N, mechanical quality factor Q_m = 20, Curie temperature Tc = 365 ~oC, ε_(33)~T/ε_0= 588.1, dielectric loss tan δ = 0.024, bulk density(ρ) = 3.08 g/cm^3, remnant polarization(P_r) = 8.87 μC/cm^2 and coercive field(Ec) = 13.79 kV/cm were obtained at x = 0.46.

关键词： lead-free piezoelectric ceramics solid-state sintering K/Na ratio electrical properties