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Sedimentary and diagenetic facies of tidal flat in epeiric sea and its related descriptive method-a case of Ma51-4 submember in Jingbian gas field of Ordos basin,China

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Petroleum 2021年第2期7卷 123-134页

作者： Xi Zhang haihua zhu Bianjun Lei Jingxuan Zhang Dongxu Wang Jinjie Yong School of Geoscience and Technology Southwest Petroleum UniversityChengdu610500China Royal Melbourne Institute of Technology University MelbourneVIC3001Australia PetroChina Changqing Oilfield Company Xi’an710018China

The Ma5_(1-4)submembers of Jingbian gas field in Ordos basin of China belongs to epeiric sea evaporative carbonate tidal flat *** zone of gypsum nodule dolostone and upper part of intertidal zone of gypsum crystal dolostone are most favorable *** carbonate rocks of Ma5_(1-4)had undergone complex ***-poraneous dolomitization and gypsification provided the material foundation of the *** selective dissolution of gypseous dolostone constructs the origin shape of pore *** dissolution and filling of various minerals in the burial period determine whether the early dissolution pores can be preserved,and the final state of the *** dissolution and filling of various minerals determined the preservation of early dissolved pores and the final condition of the *** concept of“minus cement porosity”directly reflects that sedimentary facies have great influence on the growth of reservoir in Ma5_(1-4).Combined with sedimentary microfacies and diagenetic facies,a concise numerical symbol is used to express semiquantitatively sed-imentary microfacies and diagenesis *** descriptive method has great benefit in reservoir evaluation and prediction.

关键词： Ordos Ma51-4 submember Minus cement porosity Sedimentary microfacies Diagenesis

Volcanism Pacing Slumping Gravity Flow Deposits during the Late Carboniferous in the Southern Margin of the Junggar Basin,China

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Acta Geologica Sinica(English Edition) 2023年第5期97卷 1422-1450页

作者： LI Shixin ZHANG Tingshan ZHANG Xi LIANG Zeliang JI Dongsheng Mihai Emilian POPA YONG Jinjie LUO Jinyu ZENG Jianli zhu haihua School of Geoscience and Technology Southwest Petroleum UniversityChengdu 610500China Natural Gas Geology Key Laboratory of Sichuan Province Southwest Petroleum UniversityChengdu 610500China PetroChina Xinjiang Oilfield Company KaramayXinjiang 834000China Faculty of Geology and Geophysics University of BucharestBucharest 010041Romania

Deep-water gravity depositional processes and evolution in arc systems have become topics of intense research focus in recent *** study discusses the co-evolution of volcanism and deep-water gravity flow deposits at the southern margin of the Junggar Basin,based on petrology,geochronology and geochemical *** results show that a massive collapse of unstable sediments from the slope was triggered by volcanism,resulting in the formation of slumping gravity *** occurrence of volcanic beds in the slump deposits confirm that synchronous volcanism likely affected sediment instability,triggering gravity *** Th/Yb,Ta/Yb and Th/Ta elemental ratios,U-Pb ages of detrital zircons and paleocurrent directions indicate that the North Tianshan(NTS)island arc represents the provenance of the Qianxia ***,statistical data on the pyroclastic components in the gravity flow deposits reveal an intensity index of volcanism,indicating that volcanism is strongly related to gravity flow deposits,especially in terms of the type and distribution of the deposits.A model for volcanically-triggered deep-water gravity flow deposits is established,in order to provide a more in-depth understanding of the co-evolution of volcanism and gravity flow deposits within the depositional setting of the late Paleozoic NTS oceanic subduction margin in the Junggar Basin.

关键词： volcanism trigger gravity flow deposits island arc Qianxia Formation Junggar Basin

Binary pore structure characteristics of tight sandstone reservoirs

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Petroleum Exploration and Development 2019年第6期46卷 1297-1306页

作者： zhu haihua ZHANG Tingshan ZHONG Dakang LI Yaoyu ZHANG Jingxuan CHEN Xiaohui Stake Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu 610500China School of Geoscience and Technology Southwest Petroleum UniversityChengdu 610500China School of Earth Science China University of PetroleumBeijing 102249China RMIT University MelbourneVIC 3000Australia

The pore structure and its influence on physical properties and oil saturation of the Triassic Chang 7 sandstones,Ordos Basin were discussed using thin sections,physical properties,oil saturation and mercury intrusion *** results show that the tight sandstone has a binary pore structure:when the pore throat radius is larger than the peak radius,the pore radius is significantly larger than throat size,the pore structure is similar to the bead-string model with no fractal feature,and the pore throat volume is determined by the pore *** the pore throat radius is smaller than the peak radius,the pore structure is close to the capillary model and shows fractal features,the pore size is close to the throat size,and the pore throat volume is determined by the throat *** development of pore throats larger than the peak radius provides most of the oil storage space and is the major controlling factor for the porosity and permeability variation of tight *** pore throat smaller than the peak radius(including throats with no mercury invaded)contributes major reservoir space,it shows limited variation and has little effect on the change of physical properties which is lack of correlation with oil *** pore throat larger than the peak radius is mainly composed of secondary and intergranular *** genesis and main controlling factors of large pores such as intergranular and dissolved pores should be emphasized when predicting the tight sandstones quality.

关键词： tight sandstone pore structure reservoir fractal Triassic Yanchang Formation Ordos Basin

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Effects of nano-pore system characteristics on CH4 adsorption capacity in anthracite

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Frontiers of Earth Science 2019年第1期13卷 75-91页

作者： Chang'an SHAN Tingshan ZHANG Xing LIANG Dongchu SHU Zhao ZHANG Xiangfeng WEI Kun ZHANG Xuliang FENG haihua zhu Shengtao WANG Yue CHEN School of Earth Sciences and Engineering Xi'an Shiyou UniversityXi'an 710065China Shandong Provincial Key Laboratory of Depositional Mineralization &Sedimentary Minerals Shandong University of Science and Technology Qingdao 266590China Key Laboratory of Tectonics and Petroleum Resources (China University of Geosciences) Ministry of EducationWuhan 430074China School of Geoscience and Technology Southwest Petroleum UniversityChengdu 610500China Exploration and Development Department Zhejiang Oilfield CompanyCNPCHangzhou 310023China SINOPEC Exploration Company Chengdu 610014China State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing 102249China Shaanxi Yanehang Petroleum International Exploration and Development Engineering Co.Ltd Xi'an 710075China

This study aims to determine the effects of nanoscale pores system characteristics on CH4 adsorption capacity in anthracite.A total of 24 coal samples from the southern Sichuan Basin,China,were examined systemically using coal maceral analysis,vitrinite reflectance tests, proximate analysis,ultimate analysis,low-temperature N2 adsorption-desorption experiments,nuclear magnetic resonance (NMR)analysis,and CH4 isotherm adsorption *** show that nano-pores are divided into four types on the basis of pore size ranges:super micropores (100 nm).Super micropores,micropores,and mesopores make up the bulk of coal porosity,providing extremely large adsorption space with large intemal surface *** leads us to the conclusion that the threshold of pore diameter between adsorption pores and seepage pores is 100 *** "ink bottle"pores have the largest CH4 adsorption capacity, followed by semi-opened pores,whereas opened pores have the smallest CH4 adsorption capacity which indicates that anthracite pores with more irregular shapes possess higher CH4 adsorption ***4 adsorption capacity increased with the increase in NMR porosity and the bound water ***,CH4 adsorption capacity is positively correlated with NMR permeability when NMR permeability is less than 8 ×10^-3 *** contrast,the two factors are negatively correlated when NMR permeability is greater than 8 × 10^-3 md.

关键词： CH4 adsorption capacity anthracite nanopore structure NMR physical properties

Thermal profile of work roll during strip hot rolling

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Baosteel Technical Research 2012年第4期6卷 41-43页

作者： ZHANG Guomin zhu haihua CHEN Longfu Metallurgical Process Division Research InstituteBaoshan Iron & Steel Co.Ltd. Hot Rolling Plant Baosteel Stainless Steel Co.Ltd.

The thermal expansion of work rolls during hot strip rolling was modeled by a two-dimensional difference method. The calculation model was validated by comparison between the predictions to the measured results. With that model ,the effects of rolling process parameters such as the rolling plan, mill pacing ,coolant flow rate and stepped cooling on the roll thermal profile were investigated. The result shows that stepped cooling of work rolls can be used to control complicated flatness defects such as quarter buckles during hot strip rolling.

关键词： strip hot rolling roll thermal profile quarter buckle stepped cooling

Surveying on English Mobile Learning Among University Students: Current State and Influencing Factors

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Sino-US English Teaching 2024年第3期21卷 108-119页

作者： zhu haihua CHEN Yifan REN Yanyan ZHI Yuying University of Shanghai for Science and Technology ShanghaiChina

Mobile learning integrates mobile technology with digital learning,offering flexible,personalized content and portable *** enables access to rich content and enhances learning ***,it has become mainstream to utilize mobile devices for English learning among university students’English *** current study aims to examine the current situation and influencing factors of university students’English mobile learning.98 university students in one university of Shanghai participated the study and the questionnaire was used to collect the *** results indicated that most university students already have electronic devices to support mobile *** factors,environmental factors,digital literacy,and technological capabilities are the main factors affecting university students’English mobile *** current study has implications for learners,teachers,and software *** should adjust their learning motivation,play an active role,and fully utilize the mobile platform to obtain resources and improve learning *** should incorporate the advantages of mobile teaching and promote categorized and tiered *** developers should add new functions on the basis of meeting the basic needs of learners and continuously innovate the mobile learning platform.

关键词： English learning mobile learning university students

A Process Simulation-Based Method for Engineering Change Management

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Transactions of Nanjing University of Aeronautics and Astronautics 2021年第1期38卷 173-180页

作者： YIN Leilei zhu haihua SUN Hongwei LIAO Liangchuang School of Automation Nanjing Institute of TechnologyNanjing 211167P.R.China College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016P.R.China Jiangsu Automation Research Institute Lianyungang 222006P.R.China

Engineering change management is a special form of problem solving where many rules must be followed to satisfy the requirements of product *** engineering change has great influence on the cycle and the cost of product development,it is necessary to anticipate design changes(DCs)in advance and estimate the influence effectively.A process simulation-based method for engineering change management is proposed incorporating multiple assessment ***,the change propagation model is established,which includes the formulation of change propagation influence,assessment score of DC *** the optimization process of DC solution is introduced based on ant colony optimization(ACO),and an optimization algorithm is detailed to acquire the optimal DC solution ***,a case study of belt conveyor platform is implemented to validate the proposed *** results show that changed requirement of product can be satisfied by multiple DC solutions and the optimal one can be acquired according to the unique characteristics of each solution.

关键词： change propagation simulation ant colony algorithm design change solution

An Improved Genetic Algorithm for Solving the Mixed⁃Flow Job⁃Shop Scheduling Problem with Combined Processing Constraints

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Transactions of Nanjing University of Aeronautics and Astronautics 2021年第3期38卷 415-426页

作者： zhu haihua ZHANG Yi SUN Hongwei LIAO Liangchuang TANG Dunbing College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016P.R.China Jiangsu Automation Research Institute Lianyungang 222006P.R.China

The flexible job-shop scheduling problem(FJSP)with combined processing constraints is a common scheduling problem in mixed-flow production ***,traditional methods for classic FJSP cannot be directly *** this problem,the process state model of a mixed-flow production line is *** this basis,a mathematical model of a mixed-flow job-shop scheduling problem with combined processing constraints is established based on the traditional ***,an improved genetic algorithm with multi-segment encoding,crossover,and mutation is proposed for the mixed-flow production line ***,the proposed algorithm is applied to the production workshop of missile structural components at an aerospace institute to verify its feasibility and effectiveness.

关键词： mixed-flow production flexible job-shop scheduling problem(FJSP) genetic algorithm encoding

基于数字图像相关方法的薄板结构振动功率流可视化

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振动与冲击 2021年第10期40卷 73-80页

作者：朱海华孟帆宋汉文同济大学航空航天与力学学院上海200092

通过振动功率流法研究了薄板结构振动能量的传递特性,基于数字图像相关(DIC)方法对功率流进行可视化。结构振强定义为薄板结构单位截面上的功率流,考虑各方向上的内力及质点响应,其矢量场能够清楚指明功率流的大小和方向。通过对振强及... 详细信息

通过振动功率流法研究了薄板结构振动能量的传递特性,基于数字图像相关(DIC)方法对功率流进行可视化。结构振强定义为薄板结构单位截面上的功率流,考虑各方向上的内力及质点响应,其矢量场能够清楚指明功率流的大小和方向。通过对振强及其散度场的可视化,可以直观表征结构能量的传递路径及振源位置。基于实验方法的结构振强测量,涉及被测结构表面位移场及速度场的空间导数,因此实验精度高度依赖于测量方法的空间分辨率及信噪比。数字图像相关方法作为一种非接触式的视觉测量分析手段,可对被测结构实现空间高分辨率的全场测量,且不改变系统固有特性。获得薄板结构的全场位移及速度响应,并基于空间傅里叶变换方法,在波数域上实现对空间域数据的微分计算,得到结构振强场。该研究通过对结构振强的实验研究,实现了对薄板结构振动能量传递路径及振源的可视化识别。

关键词：数字图像相关(DIC) 功率流空间傅里叶变换能量传递振源识别