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Numerical simulation of the dynamic migration mechanism and prediction of saturation of tight sandstone oil

Science China Earth Sciences 2024年第1期67卷 179-195页

作者： Gaohui CAO Mian LIN likuan zhang Lili JI Wenbin JIANG Institute of Mechanics Chinese Academy of SciencesBeijing 100190China School of Engineering Science University of Chinese Academy of SciencesBeijing 100049China Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China

Quantitative characterization of tight sandstone oil migration and accumulation is an emerging research frontier in the field of oil and gas exploration.In this study,a conceptual model containing multiple basic geological elements is developed,and a nonlinear seepage numerical model for tight sandstone oil migration and accumulation is established.The effects of the slip effect,overpressure driving force,buoyancy,and capillary force on the migration and accumulation of tight oil are examined.The results showed that(1)the differences in oil migration and accumulation between tight and conventional reservoirs are reflected in the growth mode of oil saturation,distribution characteristics of oil and water,and extent of the effect of the formation dip angle;(2)the slip effect has a significant impact when the average pore throat radius is less than 150 nm and the overpressure driving force and capillary force are the main mechanical mechanisms controlling oil migration and accumulation in tight sandstone,while the coupling effect of buoyancy,capillary force,and overpressure driving force controls the upper and lower limits of oil saturation.Finally,a dimensional and dimensionless identification chart for rapidly predicting the oil saturation of tight sandstone is proposed and verified using the measured data.This study provides a basis for analyzing the migration and accumulation mechanisms of tight sandstone oil and a new approach for predicting oil saturation.Additionally,we developed digital and visual analysis methods for the migration results,enriching the expression of the dynamics of hydrocarbon accumulation.

关键词： Tight sandstone Migration and accumulation Dynamics Oil saturation Numerical simulation

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关于高纯石英原料矿石地质学评价方法的探讨

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岩石学报 2024年第4期40卷 1311-1326页

作者：张亮刘磊朱黎宽王红杰原垭斌中国地质科学院郑州矿产综合利用研究所郑州450006 国家非金属矿资源综合利用工程技术研究中心郑州450006 自然资源部高纯石英资源开发利用工程技术创新中心郑州450006 中国科学院深海科学与工程研究所三亚572000

高纯石英资源是一种重要的战略性资源。本文结合高纯石英成矿地质特征及其对后期选矿提纯、材料加工等的影响,系统总结了高纯石英原料中杂质的赋存状态、形成机理以及评价方法等,得出:(1)可以作为高纯石英原料的潜在岩石类型有花岗伟晶... 详细信息

高纯石英资源是一种重要的战略性资源。本文结合高纯石英成矿地质特征及其对后期选矿提纯、材料加工等的影响,系统总结了高纯石英原料中杂质的赋存状态、形成机理以及评价方法等,得出:(1)可以作为高纯石英原料的潜在岩石类型有花岗伟晶岩(包括不含暗色矿物的伟晶状花岗岩)、脉石英以及水晶,岩浆演化晚期的伟晶状花岗岩-伟晶岩早期阶段的NYF型花岗伟晶岩结晶形成的石英纯度更高,后期适当的变形变质作用更有利于高纯石英矿床的形成。高纯石英原料矿石中石英矿物呈现无色透明至半透明,矿物构造裂隙少,伟晶岩型矿石矿物组成通常为石英、钠长石、条纹长石、白云母等,黑云母等暗色矿物含量极少,基本不见锂辉石、独居石等稀有金属矿物和电气石、萤石等含挥发分矿物。(2)影响高纯石英的主要地质因素包括脉石矿物及晶界杂质、包裹体、晶格杂质等。其中包裹体类型、数量和尺寸是包裹体评价的关键指标,天然石英矿物中的气液两相包裹体、矿物包裹体和<10μm包裹体应尽量少;Al和Ti是晶格杂质元素评价标志性元素,通常要求天然石英矿物中Al<50×10-6和Ti<10×10-6。(3)建议按照手标本特征-石英矿物特征-石英中包裹体特征-晶格元素赋存状态及含量的顺序,从宏观到微观,综合借助光学显微镜、扫描电子显微镜(SEM)、阴极荧光光谱分析系统(SEM-CL)、激光剥蚀电感耦合等离子质谱仪(LA-ICP-MS)等开展地质学评价和研究工作。

关键词：高纯石英矿石特征包裹体晶格杂质元素评价方法

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面向主从区块链的多级索引构建方法

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计算机研究与发展 2024年第3期61卷 799-807页

作者：王俊陆张桂月杜立宽李素陈廷伟辽宁大学信息学院沈阳110036

主从区块链是一种面向领域的、采用高效密码学原理进行大数据可信化通信及存储的新型信息处理技术.随着领域数据规模的指数级增长,现有主从区块链系统存在的查询效率低、溯源时间长等问题愈发严重.针对这些问题,提出一种面向主从区块链... 详细信息

主从区块链是一种面向领域的、采用高效密码学原理进行大数据可信化通信及存储的新型信息处理技术.随着领域数据规模的指数级增长,现有主从区块链系统存在的查询效率低、溯源时间长等问题愈发严重.针对这些问题,提出一种面向主从区块链的多级索引构建方法(multi-level index construction method for master-slave blockchain,MSMLI).首先,MSMLI引入权重矩阵,基于主链结构将整个主从区块链进行分片,并对各个分片进行权重赋值;其次,针对每个分片内的主区块链,提出基于跳跃一致性哈希的主链索引构建方法(master chain index construction method based on jump consistent Hash,JHMI),输入节点关键值和索引槽位数量,输出主链索引;最后,引入布隆过滤器,改进基于列的选择函数,对各个主区块对应的从属区块链构建2级复合索引.在3种约束条件和2类数据集上的实验结果表明,MSMLI对比现有方法,平均能够缩减9.28%的索引构建时间,提升12.07%的查询效率,同时降低24.4%的内存开销.

关键词：区块链索引分片跳跃一致性哈希改进布隆过滤器

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Quantitative characterization of pore structure of the CarboniferousePermian tight sandstone gas reservoirs in eastern Linqing depression by using NMR technique

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Petroleum Research 2018年第2期3卷 110-123页

作者： Tao Fang likuan zhang Naigui Liu Liqiang zhang Weimin Wang Lan Yu Chao Li Yuhong Lei School of Geosciences China University of PetroleumShandong266580China Institute of Geology and Geophysics Chinese Academy of SciencesBeijing100029China Key Laboratory of Petroleum Resources Research Chinese Academy of SciencesBeijing100029China Institute of Quantum Electronics School of Electronics Engineering and Computer SciencePeking UniversityBeijing100871China Research Institute of Exploration and Development Sinopec Shengli Oilfield CompanyShandong257000China

Micro-nano scale pores can accurately and fastly be measured by the nuclear magnetic resonance(NMR)technique,which provides a new method to quantitatively characterize pore structures in tight sandstone.Based on the method of calibration of mercury pressure data for NMR T_(2) spectrum,for the measurement inaccuracy due to the mercury saturation less than 100%in tight sandstone,the mercury pressure curve and T_(2) spectrum is used to cumulate from the maximum pore on the right boundary to the small pores in the left,the range of pore-throat radius measured by the mercury injection in the leftward cumulative curve is selected as a comparable interval of NMR pore-throat radius,and the longitudinal interpolation method and the least square method are utilized to construct the distribution curve of pore-throat radius transformed by T_(2) spectrum.The modified method is used to obtain NMR T_(2) spectrum,conversion coefficient of pore-throat radius and pore-throat radius distribution of the Carboniferous-Permian tight sandstone gas reservoirs in the eastern Linqing depression,and characteristics of reservoir pore structures are quantitatively investigated;in addition,in combination with analysis of thin section and scanning electron microscopy,the reservoir effectiveness and cause of the pore structure variability in the tight sandstone are also well studied.The results show that the NMR pore-throat radius curve obtained by the modified method has a high consistency with the mercury injection curve,and the NMR test accuracy of tight sandstone is significantly improved.In the study area,the pore-throat radius of the Carboniferous-Permian tight sandstone mainly ranges from 0.002 to 2 mm,the pore is generally submicro-nano scale,but the pore-throat radius distribution of different types of sandstone varies significantly.The lithic quartz sandstone is rich in siliceous matter and poor in plastic detritus and matrix,generally dominated by submicro-scale pore-throats including micro-scale porethroats;lithic feldspar sandstone

关键词： NMR T_(2)spectrum Mercury injection Conversion coefficient Pore-throat Rock fabric Microfacies Tight sandstone Linqing depression

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东秦岭伟晶岩型高纯石英矿地球化学、锆石U-Pb及Hf同位素研究:对高纯石英找矿方向的探讨

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中国地质 2024年第1期51卷 42-56页

作者：赵海波王红杰张勇马驰朱黎宽中国地质调查局西宁自然资源综合调查中心青海西宁810000 中国地质科学院郑州矿产综合利用研究所河南郑州450006 自然资源部高纯石英资源开发利用工程技术创新中心河南郑州450006 合肥工业大学资源与环境工程学院安徽合肥230009 东华理工大学核资源与环境国家重点实验室江西南昌330013 东华理工大学地质调查研究院江西南昌330013

[研究目的]高纯石英是战略性新兴产业的关键基础材料,是世界稀缺的战略性矿产资源。目前美国以Spruce-Pine花岗伟晶岩作为原料生产的4N8及以上高端石英砂产品几乎垄断国际市场。东秦岭4N级伟晶岩型高纯石英矿点的发现为研究高纯石英形... 详细信息

[研究目的]高纯石英是战略性新兴产业的关键基础材料,是世界稀缺的战略性矿产资源。目前美国以Spruce-Pine花岗伟晶岩作为原料生产的4N8及以上高端石英砂产品几乎垄断国际市场。东秦岭4N级伟晶岩型高纯石英矿点的发现为研究高纯石英形成机制、实现找矿突破和建立成矿模型提供了难得的机遇。[研究方法]通过对东秦岭新发现的伟晶岩型高纯石英矿点开展野外调查,并与美国Spruce-Pine高纯石英矿床伟晶岩开展岩石地球化学、锆石U-Pb同位素年代学和Hf同位素等方面的对比研究。[研究结果]东秦岭10号高纯石英矿形成于早泥盆世,锆石U-Pb年龄为(406.8±0.8)Ma,稍早于美国Spruce-Pine的高纯石英花岗伟晶岩形成时代。东秦岭高纯石英矿点伟晶岩与美国Spruce-Pine高纯石英矿床伟晶岩形成温度均为600℃左右。东秦岭高纯石英矿点伟晶岩与美国Spruce-Pine高纯石英矿床伟晶岩具有相似的岩石地球化学特征,表现I型花岗岩和高分异演化特征,源区物质来源既有下地壳,也有幔源物质。仅通过对东秦岭高纯石英矿点伟晶岩和灰池子花岗岩体空间关系、形成时代和岩石地球化学特征,是不足以完全反演源区特征及成岩成矿过程,对于东秦岭高纯石英矿点伟晶岩和灰池子花岗岩体是否存在同源演化仍需要进一步研究。[结论]东秦岭与美国Spruce-Pine高纯石英矿床在花岗岩类型、岩浆特征和形成温度等方面具有相似性,为进一步揭示高纯石英成矿地质背景和实现找矿突破提供理论依据。

关键词：岩石地球化学锆石U-Pb Hf同位素高纯石英伟晶岩矿产勘查工程东秦岭

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Timing of granite pegmatite-type high-purity quartz deposit in the Eastern Qinling,China:constraints from in-situ LA-ICP-MS trace analyses of quartz and monazite U–Pb dating

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Acta Geochimica 2022年第2期41卷 197-207页

作者： Yong zhang Haibo Zhao Lei Liu Jiayong Pan likuan Zhu Guoqi Liu Xiaotian zhang State Key Laboratory of Nuclear Resources and Environment(East China University of Technology) Nanchang 330013China Zhengzhou Institute of Multipurpose Utilization of Mineral Resources CAGSZhengzhou 450006China Institute of Geological Survey of East China University of Technology Nanchang 330013China Xining Center of Natural Resources Comprehensive Survey CGSXining 810000China

Eastern Qinling,China is one of the important rare metal metallogenic provinces with extensively distributed granite pegmatite dikes.The No.5 granite pegmatite intruded into the granitic gneiss of the Qinling Group,and the major minerals are quartz(39.8%),K-feldspar(18.8%),albite(36.3%),muscovite(3.4%),and garnet(1.1%).Monazite U–Pb isotopic dating indicates that the No.5 pegmatite from the Eastern Qinling was emplaced at ca.420.2±2.2 Ma,which confirms that highpurity quartz mineralization probably formed during the Early Devonian.In-situ laser ablation inductively coupled plasma mass spectrometry analysis of quartz show that quartz samples from Eastern Qinling have total trace element concentrations(Al,Ti,Sc,Li,B,Cr,Mn,and Fe)ranging from 23.2 to 52.8 ppm,slightly higher than the quartz(impurity element content from 13.4 to 25.9 ppm)of the Spruce Pine high-purity quartz deposit in western North Carolina.The No.5 pegmatite of Eastern Qinling could be defined as one high-purity quartz deposit of China.

关键词： Monazite LA-ICP-MS U-Pb High-purity quartz Granite pegmatite Eastern Qinling

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Two-dimensional materials for future information technology: status and prospects

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Science China(Information Sciences) 2024年第6期67卷 1-147页

作者： Hao QIU Zhihao YU Tiange ZHAO Qi zhang Mingsheng XU Peifeng LI Taotao LI Wenzhong BAO Yang CHAI Shula CHEN Yiqi CHEN Hui-Ming CHENG Daoxin DAI Zengfeng DI Zhuo DONG Xidong DUAN Yuhan FENG Yu FU Jingshu GUO Pengwen GUO Yue HAO Jun HE Xiao HE Jingyi HU Weida HU Zehua HU Xinyue HUANG Ziyang HUANG Ali IMRAN Ziqiang KONG Jia LI Qian LI Weisheng LI Lei LIAO Bilu LIU Can LIU Chunsen LIU Guanyu LIU Kaihui LIU Liwei LIU Sheng LIU Yuan LIU Donglin LU likuan MA Feng MIAO Zhenhua NI Jing NING Anlian PAN Tian-Ling REN Haowen SHU Litao SUN Yue SUN Quanyang TAO Zi-Ao TIAN Dong WANG Hao WANG Haomin WANG Jialong WANG Junyong WANG Wenhui WANG Xingjun WANG Yeliang WANG Yuwei WANG Zhenyu WANG Yao WE Department of Applied Physics The Hong Kong Polytechnic University Key Laboratory for Micro-Nano Physics and Technology of Hunan Province College of Materials Science and EngineeringHunan University College of Integrated Circuits Zhejiang University Shenzhen Geim Graphene Center Shenzhen Key Laboratory of Layered Materials for Value-Added ApplicationsTsinghua-Berkeley Shenzhen Institute & Institute of Materials ResearchTsinghua Shenzhen International Graduate SchoolTsinghua University State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and EngineeringInternational Research Center for Advanced PhotonicsZijingang CampusZhejiang University National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information TechnologyChinese Academy of Sciences CAS Key Laboratory of Nanophotonic Materials and Devices & Key Laboratory of Nanodevices and Applications i-LabSuzhou Institute of Nano-Tech and Nano-Bionics (SINANO)Chinese Academy of Sciences College of Chemistry and Chemical Engineering Hunan University Key Laboratory of Quantum State Construction and Manipulation (Ministry of Education) Department of PhysicsRenmin University of China School of Integrated Circuits Beijing National Research Center for Information Science and Technology (BNRist)Tsinghua University School of Electronic Science and Engineering Nanjing University The State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology Shaanxi Joint Key Laboratory of GrapheneSchool of MicroelectronicsXidian University Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education School of Physics and TechnologyWuhan University School of Integrated Circuits Huazhong University of Science and Technology Center for Nanochemistry (CNC) Beijing Science and Engineering Center for NanocarbonsBeijing National Laboratory for Molecular SciencesCollege of Chemistry and Molecular EngineeringPeking University State Key Laboratory for Artificial Microstruct

Over the past 70 years, the semiconductor industry has undergone transformative changes,largely driven by the miniaturization of devices and the integration of innovative structures and materials. Two-dimensional(2D) materials like transition metal dichalcogenides(TMDs) and graphene are pivotal in overcoming the limitations of silicon-based technologies, offering innovative approaches in transistor design and functionality, enabling atomic-thin channel transistors and monolithic 3D integration. We review the important progress in the application of 2D materials in future information technology, focusing in particular on microelectronics and optoelectronics. We comprehensively summarize the key advancements across material production, characterization metrology, electronic devices, optoelectronic devices, and heterogeneous integration on silicon. A strategic roadmap and key challenges for the transition of 2D materials from basic research to industrial development are outlined. To facilitate such a transition, key technologies and tools dedicated to 2D materials must be developed to meet industrial standards, and the employment of AI in material growth, characterizations, and circuit design will be essential. It is time for academia to actively engage with industry to drive the next 10 years of 2D material research.

关键词： two-dimensional (2D) materials information technology production technology standardization of characterization microelectronicdevices optoelectronic devices multi-functional integration

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基于GC-IMS分析不同储存时间金露梅红茶中挥发性有机物

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食品研究与开发 2024年第10期45卷 44-51页

作者：张艳荣吴家虞景慧刘力宽左文明李锦萍曾阳青海师范大学生命科学学院青海省青藏高原药用动植物资源重点实验室青海西宁810008 青海省农业技术推广总站青海西宁810008 高原科学与可持续发展研究院青海西宁810008

为研究储存时间对金露梅红茶中挥发性有机物(volatile organic compounds,VOCs)的影响,采用气相-离子迁移色谱(gas chromatography-ion mobility spectroscopy,GC-IMS)技术测定2019年、2020年、2021年金露梅红茶中VOCs组成。结果表明,GC-IMS技术从不同时间金露梅红茶样品中鉴定出61个信号峰,通过内置数据库定性出43种VOCs,包括20种醛类、8种酮类、7种醇类、2种酯类、2种烯类、2种吡嗪类和1种呋喃类等。通过主成分分析(prin-cipal component analysis,PCA)2019年样品和2020年、2021年样品差异较大。由指纹图谱分析发现,随着储存时间的延长,2021年样品中VOCs的种类和浓度相对较大,2019年样品中VOCs的种类和浓度最小。通过偏最小二乘法中变量投影重要性值(variable importance for the projection,VIP)判定,分析出金露梅红茶中14种潜在特征性VOCs,结合聚类热图结果发现,金露梅红茶随着储存时间的延长,乙醇、苯甲醛(M)、2-甲基丁醛(D)、二甲基三硫、NF-12等含量逐渐升高,而3-羟基丁酮、己醛、丙酮、反式-2-戊烯醛、壬醛(M)、2-己烯醛(M)、NF-3、NF-4、NF-18等含量逐渐降低。

关键词：金露梅红茶储存时间挥发性有机物气相-离子迁移色谱

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Radiolarian and Detrital Zircon in the Upper Carboniferous to Permian Bancheng Formation,Qinfang Basin,and the Geological Significance

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Journal of Earth Science 2018年第3期29卷 594-606页

作者： Xue Ke Zongyan zhang Jianghai Yang Huazhou Yao likuan Zhu Weihong He Institute of Geological Survey China University of GeosciencesWuhan 430074China Wuhan Center of China Geological Survey Wuhan 430205China State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesWuhan 430074China School of Earth Sciences China University of GeosciencesWuhan 430074China Zhengzhou Institute of Multipurpose Utilization of Mineral Resources Chinese Academy of Geological SciencesZhengzhou 450006China

The Bancheng Formation exposed along the Shift Reservoir nearby Bancheng Town, Qinfang Basin, southern Guangxi, is mainly composed of thin-bedded chert. The radiolarian assemblages in the studied section suggest it was a pelagic setting and the age of the Bancheng Formation is Late Carboniferous to Early Permian. The detrital zircon U-Pb ages from the section are characterized by a Permian peak at -282 Ma. Detrital zircon provenance analysis suggests that the Permian detrital zircons in the Bancheng Formation were likely from volcanic-magmatic arc rocks related to the subducfton of the Paleo-Tethyan Ocean. The long-lived deposition （from Upper Devonian to Middle Permian, about 125 Ma） of the radiolarian cherts in the Qinfang Basin was comparable with that deposited in Ailaoshan Ocean. The radiolarian assemblages in Qinfang Basin show a Tethyan affinity. Together with the Permian subduction-related arc volcanic rocks and the E-MORB type basalts to the northwest of the study area, our data support the existence of a Permian arc-related basin in the Qinfang area.

关键词： Qinfang Basin Bancheng Formation detrital zircon radiolarian Permian arc-related basin.

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Characteristics of silty laminae in zhangjiatan Shale of southeastern Ordos Basin,China:Implications for shale gas formation

Characteristics of silty laminae in Zhangjiatan Shale of sou...

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中国科学院地质与地球物理研究所2015年度（第15届）...

作者： Yuhong Lei Xiaorong Luo Xiangzeng Wang Lixia zhang Chengfu Jiang Wan Yang Yuxi Yu Ming Cheng likuan zhang Key Laboratory of Petroleum Resources Research Institute of Geology and GeophysicsChinese Academy of Sciences Shaanxi Yanchang Petroleum(Group) Co. Ltd. State Department of Geological Science and Engineering Geology and Geophysics ProgramMissouri University of Science and Technology University of Chinese Academy of Sciences

Shale oil and gas have been discovered in the lacustrine organicrich zhangjiatan Shale of the Upper Triassic Yanchang Formation,Ordos Basin,China.Core observations indicate abundant silty laminae in the producing shales.This study documents the stratigraphic distribution of silty laminae and their relationship with interlaminated clay laminae.The type,structure,and characteristics of pores and mineral composition of silty laminae were observed and analyzed through thin section and scanning electron microscopy,X-ray diffraction,low-pressure CO and N adsorption,mercury porosimetry,and helium pycnometry.Results from silty laminae are compared with those of clayey laminae.The frequency and thickness of silty laminae vary over a wide range.The thickness ranges from 0.2 to 4 mm and is 1.5 mm on average;the frequency ranges from 4 to 32 laminae/m and is 23 laminae/m on average.The thickness percentage of silty laminae in the measured segments ranges from 6%to 17%.Silty laminae consist of quartz,feldspar,mixed-layer montmorillonite,and chlorite.In comparison to clayey laminae,non-clay detrital grains are larger,quartz and feldspar are more common,and clay minerals are less abundant.Pores in silty laminae are primary interparticle,dissolutional,intercrystalline,and microfracture types.Mesopores(2-50 nm in diameter) and macropores(50 nm-1 μm) are common,whereas,micropores(<2 nm) are rare;the distribution of pore diameters is multimodal.However,microscopic pores with a diameter commonly smaller than 100 nm are common in clayey laminae.Thus,pore volume and surface area of micropores in silty laminae are less than those in the adjacent clayey laminae,and vice versa for meso- and macropores.The porosity of shales increases with the proportion of silty laminae in the shales.The silty laminae provide the storage space and flow conduit for oil and gas,and they play a significant role in the migration,accumulation,occurrence,and amount of gas in the shales.

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