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Characteristics of Tight Sandstone Reservoirs and Controls of Reservoir Quality: A Case Study of He 8 Sandstones in the Linxing Area, Eastern Ordos Basin, China

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Acta Geologica Sinica(English Edition) 2019年第3期93卷 637-659页

作者： gao xiangdong WANG Yanbin LI Yong GUO Hui NI Xiaoming WU Xiang ZHAO Shihu College of Geoscience and Surveying Engineering China University of Mining and TechnologyBeijing 100083China Shandong Provincial Key Laboratory of Depositional Mineralization&Sedimentary Minerals Shandong University of Science and TechnologyQingdao 266590ShandongChina Development and Research Center of China Geological Survey Beijing 100037China School of Energy Science and Engineering Henan Polytechnic UniversityJiaozuo 454000HenanChina China United Coalbed Methane Corporation Limited Beijing 100015China

Determining the process of densification and tectonic evolution of tight sandstone can help to understand the distribution of reservoirs and find relatively high-permeability *** on integrated approaches of thin section,scanning electron microscopy(SEM),cathode luminescence(CL),nuclear magnetic resonance(NMR),X-ray diffraction(XRD),N2 porosity and permeability,micro-resistivity imaging log(MIL)and three-dimensional seismic data analysis,this work discussed the reservoir characteristics of the member 8 of the Permian Xiashihezi Formation(He 8 sandstones)in the Linxing area of eastern Ordos Basin,determined the factors affecting reservoir quality,and revealed the formation mechanism of relatively high-permeability *** results show that the He 8 sandstones in the Linxing area are mainly composed of feldspathic litharenites,and are typical tight sandstones(with porosity<10%and permeability<1 mD accounting for 80.3%of the total samples).Rapid burial is the main reason for reservoir densification,which resulted in 61%loss of the primary *** this process,quartz protected the original porosity by resisting *** cementation(including carbonate,clay mineral and siliceous cementation)further densified the sandstone reservoirs,reducing the primary porosity with an average value of 28%.The calcite formed in the eodiagenesis occupied intergranular pores and affected the formation of the secondary pores by preventing the later fluid intrusion,and the Fe-calcite formed in the mesodiagenetic stage densified the sandstones further by filling the residual intergranular *** clay minerals show negative effects on reservoir quality,however,the chlorite coatings protected the original porosity by preventing the overgrowth of *** dissolution of feldspars provides extensive intergranular pores which constitute the main pore type,and improves the reservoir *** tectonic movements play an important role in improving the reservoir ***

关键词： tight gas reservoir quality high-permeability reservoirs Linxing area eastern Ordos Basin

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High-throughput microfluidic production of carbon capture microcapsules:fundamentals,applications,and perspectives

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International Journal of Extreme Manufacturing 2024年第3期6卷 330-361页

作者： xiangdong Liu Wei gao Yue Lu Liangyu Wu Yongping Chen College of Electrical Energy and Power EngineeringYangzhou UniversityYangzhouJiangsu 225127People’s Republic of China Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjingJiangsu 210096People’s Republic of China Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application School of Environmental Science and EngineeringSuzhou University of Science and TechnologySuzhouJiangsu 215009People’s Republic of China

In the last three decades,carbon dioxide(CO_(2)) emissions have shown a significant increase from various *** address this pressing issue,the importance of reducing CO_(2) emissions has grown,leading to increased attention toward carbon capture,utilization,and storage *** these strategies,monodisperse microcapsules,produced by using droplet microfluidics,have emerged as promising tools for carbon capture,offering a potential solution to mitigate CO_(2) ***,the limited yield of microcapsules due to the inherent low flow rate in droplet microfluidics remains a *** this comprehensive review,the high-throughput production of carbon capture microcapsules using droplet microfluidics is focused ***,the detailed insights into microfluidic chip fabrication technologies,the microfluidic generation of emulsion droplets,along with the associated hydrodynamic considerations,and the generation of carbon capture microcapsules through droplet microfluidics are *** review highlights the substantial potential of droplet microfluidics as a promising technique for large-scale carbon capture microcapsule production,which could play a significant role in achieving carbon neutralization and emission reduction goals.

关键词： carbon capture microcapsules droplet microfluidic high-throughput production carbon neutralization

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Hybrid photoanode films based on sparse ZnO rod array-TiO_2 nanoparticles in dye-sensitized solar cells

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Science China(Physics,Mechanics & Astronomy) 2012年第7期55卷 1183-1188页

作者： WANG CaiLu gao xiangdong LI XiaoMin JIANG ZhengWu YANG ZhengHong GU ZhengYing HE Peng State Key Lab of High Performance Ceramics and Superfine Microstructures Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education Tongji UniversityShanghai 200092China

ZnO-TiO2 hybrid photoanodes were fabricated via the doctor-blade method by integrating vertically-grown sparse ZnO arrays with hydrothermal TiO2 nanoparticles. A special surface-coating technique was developed to deposit a thin TiO2 layer on the surface of ZnO rods. Microstructure, optical and photoelectrochemical performance of the hybrid photoanodes were investigated. The denser ZnO array exhibited bad filling behavior of nanoparticles in the interspace of ZnO rods, strong scattering and low conversion efficiency (0.27%). The sparser array showed a much better integrated microstructure, improved transmittance and high conversion efficiency (2.68%). The surface modification of ZnO rods by the TiO2 thin layer was found useful in improving the interfacial microstructure between the ZnO rod and the TiO2 bulk film, and the total conversion efficiency of 3.01% was achieved, higher than that of the pure TiO2 nanoparticle cell (2.93%). The increased scattering effects on the incident light, the enhanced electron transportation at TiO2/dye/electrolyte interface, and the inhabited recombination were responsible for this improvement.

关键词： hybrid photoanode ZnO TiO2 dye-sensitized solar cells

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ARTIFICIAL NEURAL NETWORK AND FUZZY LOGIC CONTROLLER FOR GTAW MODELING AND CONTROL

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Chinese Journal of Mechanical Engineering 2002年第1期15卷 53-56页

作者： gao xiangdong Faculty of Mechanical and Electrical Engineering，Guangdong University of Technology， Guangzhou 510090，China Huang Shisheng South China University of Technology Faculty of Mechanical and ELectrical Engineering Guangdong University of Technology Guangzhou 510090 South China University of Technology

An artificial neural network(ANN) and a self-adjusting fuzzy logiccontroller(FLC) for modeling and control of gas tungsten arc welding(GTAW) process are *** discussion is mainly focused on the modeling and control of the weld pool depth with ANN and theintelligent control for weld seam tracking with FLC. The proposed neural network can produce highlycomplex nonlinear multi-variable model of the GTAW process that offers the accurate prediction ofwelding penetration depth. A self-adjusting fuzzy controller used for seam tracking adjusts thecontrol parameters on-line automatically according to the tracking errors so that the torch positioncan be controlled accurately.

关键词： Artificial neural network Fuzzy logic control Weld pool depth Seamtracking

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The trends of migration in China, 1949-2019

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China Population and Development Studies 2020年第1期3卷 154-159页

作者： xiangdong gao Xinxian Wang The Center for Modern Chinese City Studies School of Public AdministrationEast China Normal University3663 North Zhongshan RoadShanghai 200062China School of Public Administration East China Normal University3663 North Zhongshan RoadShanghai 200062China

Based on relevant policy documents and census data,the authors analyze the characteristics and trends of China’s population migration since the founding of People’s Republic of China(PRC)in *** study finds that over the past 70 years,population migration in China has exhibited distinct stage-specific *** the founding of PRC to the period of reform and opening-up that got underway in 1978,China witnessed a shift from free population movement to restricted population movement,as well as a shift from population movement driven by the recovery of national economy to that driven by political *** the launch of the reform and opening-up policy,China’s population migration entered an entirely new stage of development,exhibiting the following trends:(1)population migration was highly active,and there were changes in the size of the migrant population;(2)with regard to the direction of migration,rural to urban migration remained the dominant pattern,but the proportion of urban to urban migrants also rose;(3)with regard to the choice of destination,inter-provincial migrants were increasingly concentrated in the coastal areas of Eastern China,whilst the large cities in the Central and Western China were more favored by intra-provincial migrants;(4)the distances inter-provincial migrants traveled increased;(5)migration was motivated mainly by economic factors,yet the importance of social factors was on the rise;and(6)the educational level of migrants went up significantly and the sex ratio gradually became ***,we must gain a deeper understanding of the trends and characteristics of population migration,taking into consideration the interrelationship between population migration and socioeconomic *** begin,the equalization of basic public services and thorough-going reform of the household registration system can contribute to the development of a new urbanization strategy.

关键词： Population migration Migration characteristics Development trend

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Insights into genetic diversity and phenotypic variations in domestic geese through comprehensive population and pan-genome analysis

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Journal of Animal Science and Biotechnology 2024年第1期15卷 88-107页

作者： Guangliang gao Hongmei Zhang Jiangping Ni Xianzhi Zhao Keshan Zhang Jian Wang xiangdong Kong Qigui Wang Chongqing Academy of Animal Science Rongchang DistrictChongqing 402460China Livestock and Poultry Multi‑Omics Key Laboratory of Ministry of Agriculture and Rural Affairs College of Animal Science and TechnologySichuan Agricultural UniversityChengdu 611130China Chongqing Engineering Research Center of Goose Genetic Improvement Rongchang DistrictChongqing 402460China Department of Cardiovascular Ultrasound and Non‑Invasive Cardiology Sichuan Academy of Medical Sciences and Sichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengdu611731China Ultrasound in Cardiac Electrophysiology and Biomechanics Key Laboratory of Sichuan Province University of Electronic Science and Technology of ChinaChengdu611731China JiguangGene Biotechnology Co. Ltd.Nanjing210032China Jiangsu Agri-Animal Vocational College Taizhou225300China Poultry Science Institute Chongqing Academy of Animal ScienceNo.51 Changzhou AvenueRongchang DistrictChongqing 402460P.R.China

Background Domestic goose breeds are descended from either the Swan goose(Anser cygnoides)or the Greylag goose(Anser anser),exhibiting variations in body size,reproductive performance,egg production,feather color,and other phenotypic *** a pan-genome facilitates a thorough identification of genetic variations,thereby deepening our comprehension of the molecular mechanisms underlying genetic diversity and phenotypic *** To comprehensively facilitate population genomic and pan-genomic analyses in geese,we embarked on the task of 659 geese whole genome resequencing data and compiling a database of 155 RNA-seq *** constructing the pan-genome for geese,we generated non-reference contigs totaling 612 Mb,unveiling a collection of 2,813 novel genes and pinpointing 15,567 core genes,1,324 softcore genes,2,734 shell genes,and 878 cloud genes in goose ***,we detected an 81.97 Mb genomic region showing signs of genome selection,encompassing the TGFBR2 gene correlated with variations in body weight among ***-wide association studies utilizing single nucleotide polymorphisms(SNPs)and presence-absence variation revealed significant genomic associations with various goose meat quality,reproductive,and body composition *** instance,a gene encoding the SVEP1 protein was linked to carcass oblique length,and a distinct gene-CDS haplotype of the SVEP1 gene exhibited an association with carcass oblique ***,the pan-genome analysis revealed enrichment of variable genes in the“hair follicle maturation”Gene Ontology term,potentially linked to the selection of feather-related traits in geese.A gene presence-absence variation analysis suggested a reduced frequency of genes associated with“regulation of heart contraction”in domesticated geese compared to their wild *** study provided novel insights into gene expression features and functions by integrating gene expression patterns across multiple orga

关键词： Gene-CDS haplotype Goose GWAS Pan-genome Presence-absence variation Selection signal

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中国流动人口省际迁移距离及变化

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人口研究 2018年第6期42卷 25-34页

作者：高向东华东师范大学公共管理学院华东师范大学中国现代城市研究中心上海200062

改革开放以来,中国流动人口规模不断增大,跨省流动人口比重也在不断提升,虽然关于流动人口省际迁移的研究较多,但是针对省际迁移距离的研究则不多见。文章利用2000和2010年人口普查数据考察人均迁移距离及其省际差异,研究发现:2000～201... 详细信息

改革开放以来,中国流动人口规模不断增大,跨省流动人口比重也在不断提升,虽然关于流动人口省际迁移的研究较多,但是针对省际迁移距离的研究则不多见。文章利用2000和2010年人口普查数据考察人均迁移距离及其省际差异,研究发现:2000～2010年我国流动人口省际人均迁移距离有所增加,2000年人均迁移距离为980.51千米,2010年为994.82千米;人均迁移距离变动存在区域差异性,迁移距离增加的省份主要分布在西部,而迁移距离降低的省份主要分布在东部;人均迁移距离存在性别差异性,女性更加倾向于近距离迁移,2010年男性的人均迁移距离为1000.75千米,女性则为987.01千米,迁移距离的性别差异在不断缩小。同时,文章还从经济因素、年龄结构和迁移规模3个方面探讨了流动人口省际迁移距离的影响因素。

关键词：流动人口省际迁移迁移距离

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微间隙焊缝磁光成像检测及跟踪方法

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机械工程学报 2015年第11期51卷 71-77页

作者：高向东吴嘉杰广东工业大学机电工程学院广州510006

在激光对接焊过程中,必须精确检测焊缝位置并控制激光束始终对中焊缝。针对小于0.05 mm的微间隙对接焊缝,通过对焊件施加感应磁场,利用法拉第磁旋光原理构成磁光传感器,获取焊缝磁光图像。针对焊缝磁光图像,以焊缝磁光图像的灰度直方图... 详细信息

在激光对接焊过程中,必须精确检测焊缝位置并控制激光束始终对中焊缝。针对小于0.05 mm的微间隙对接焊缝,通过对焊件施加感应磁场,利用法拉第磁旋光原理构成磁光传感器,获取焊缝磁光图像。针对焊缝磁光图像,以焊缝磁光图像的灰度直方图为特征模版,研究一种基于均值漂移算法的激光焊焊缝检测与跟踪方法。通过均值漂移与粒子滤波相结合的算法,利用粒子滤波能够对图像大范围搜索目标的特点,实现焊缝全自动跟踪。同时,根据相似度Bhattacharyya系数对焊缝特征模版进行更新,提高焊缝跟踪精度。试验结果表明,利用均值漂移与粒子滤波相结合的算法能够从焊缝磁光图像中有效检测焊缝特征,实现焊缝的自动跟踪。

关键词：微间隙焊缝磁光成像均值漂移粒子滤波焊缝跟踪

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上海远郊区流动人口集聚研究

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城市发展研究 2009年第2期16卷 105-108+115页

作者：高向东华东师范大学中国现代城市研究中心人口研究所

远郊区流动人口集聚是大城市人口分布变动的新动向。本文论述了上海远郊区流动人口集聚的现象和集聚过程的阶段性,分析了远郊区流动人口集聚的利弊及动力机制,指出了经济发展是远郊区流动人口集聚的根本动力,提出了调控远郊区流动人口... 详细信息

远郊区流动人口集聚是大城市人口分布变动的新动向。本文论述了上海远郊区流动人口集聚的现象和集聚过程的阶段性,分析了远郊区流动人口集聚的利弊及动力机制,指出了经济发展是远郊区流动人口集聚的根本动力,提出了调控远郊区流动人口集聚的对策建议。

关键词：远郊区流动人口集聚上海

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基于X65钢的摩擦螺柱焊可行性焊接工艺

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上海交通大学学报 2016年第12期50卷 1898-1901页

作者：田路高辉焦向东北京石油化工学院能源工程先进连接技术研究中心北京102617

影响管线钢摩擦螺柱焊焊接性能的主要焊接工艺参数包括主轴转速、进给速度、焊接压力.在参考其他摩擦焊研究方法的基础上,以X65钢为对象,利用实验室现有的摩擦焊设备,进行大量不同工艺参数组合下的焊接试验.通过对焊接接头的宏观形貌、... 详细信息

影响管线钢摩擦螺柱焊焊接性能的主要焊接工艺参数包括主轴转速、进给速度、焊接压力.在参考其他摩擦焊研究方法的基础上,以X65钢为对象,利用实验室现有的摩擦焊设备,进行大量不同工艺参数组合下的焊接试验.通过对焊接接头的宏观形貌、金相、力学等性能的测试分析来评定接头质量,期望得出以X65钢为代表的管线钢摩擦螺柱焊的可行性焊接工艺,为实际生产提供指导.

关键词：摩擦螺柱焊金相分析力学性能

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