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13th International Field Exploration and development Conference, IFEdC 2023

作者： Li, Ning Gong, ren-Bin ren, Liang ren, Shu-Hang Sun, Jiang- tao Yu, Xiao Gan, Chun-Ting Research Institute of Petroleum Exploration and Development PetroChina Beijing China Artificial Intelligence Technology R&D Center for Exploration and Development CNPC Beijing100083 China Technology Consult Center Research Institute of Petroleum Exploration and Development PetroChina Beijing100083 China Huawei Technology Co. Ltd. Beijing100085 China

ISBN: (纸本)9789819702718

Paleozoic carbonate rock is the key field of oil-gas exploration in Tarim Basin. Fracture-cavity reservoirs are often developed in carbonate reservoirs in Tarim Oilfield, a large amount of oil and gas resources are dis-tributed in Paleozoic reservoirs with different burial depths and scales, accurately and quickly identifying these fracture-cavity reservoirs is Significant to the oil and gas exploration, development, and production of the Tarim Oilfield. With the continuous development of artificial intelligence technology, machine learning methods have been widely applied in various scenarios of oil and gas exploration and development, bringing new opportunities for the development of carbonate reservoir prediction technology. Based on drilling, logging and seismic data, this study comprehensively analyzes the structure, rock and physical properties of carbonate reservoirs in the study area, exploring the main controlling factors of carbonate reservoirs. On this basis, a sample set corresponding to the fracture-cavity reservoirs in the study area was constructed, by using machine learning methods, a prediction model for carbonate rock fracture-cavity reservoirs has been established, which can intelligently predict carbonate rock fracture and cave reservoirs in the research area. The trained model of carbonate rock fracture and cave reservoir prediction can quickly and accurately identify fracture and cave reservoirs on post stack seismic data. This study demonstrates that methods are based on machine learning can quickly and efficiently predict carbonate rock fracture-cavity reservoirs. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Forecasting

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Numerical analysis of flow instability with vortex cavitation in venturi tube 17

Numerical analysis of flow instability with vortex cavitatio...

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17th Asian International Conference on Fluid Machinery, AICFM 2023

作者： Nakashima, T. Enomoto, Y. Nakamura, T. Mechanical Engineering R&D Dept. Energy Systems Research and Development Center Toshiba Energy Systems & Solutions Corporation 20-1 Kansei-Cho Tsurumi-Ku Yokohama230-0034 Japan

The swirling flow with cavitation can cause pressure pulsations in a draft tube of a hydro turbine at off-design operating conditions. Especially at the full load condition, the cavitation volume may fluctuate greatly, causing pressure pulsations with flow rate fluctuations known as cavitation surge throughout the hydraulic system. The cases that predicted the phenomenon qualitatively using the CFd analysis have been reported previously, whereas the methods to predict the cavitation volume and the fluctuation frequency in the cavitation surge condition quantitatively have not yet been established. Therefore, in this study, unsteady CFd analysis was conducted for the experimental apparatus that simulates the flow in the draft tube downstream of a runner using the stationary guide vane and the venturi tube. In CFd analysis, the influence of the turbulence models by using LES and SST and the influence of the number of meshes in LES simulation were investigated. It was founded that LES simulation captured the vortex generation finely and improved the prediction accuracy of the cavitation volume than SST simulation. On the other hand, it was founded that too fine mesh has a small effect on the prediction accuracy of the cavitation volume, although the resolution of the vortex is improved. © Published under licence by IOP Publishing Ltd.

关键词： Cavitation

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Photonic Integrated Circuits for radar 16

Photonic Integrated Circuits for Radar

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16th Pacific rim Conference on Lasers and Electro-Optics, CLEO-Pr 2024

作者： Im, Chul-Soon Cho, Junhyung Baek, Seonu Gwon, Ji-Yeong Lee, Seungeui Bae, Youngseok Yongin R&d Center Cheoin-gu Gyeonggi-do Yongin-si17121 Korea Republic of Agency for Defense Development Yuseong P.O. Box 35 Daejeon34186 Korea Republic of

Photonic integrated circuits for radar are introduced and experimental results of Hanwha Systems are reported to substantiate their feasibility in radar. Simulateneously, we discuss current issues and approaches in re... 详细信息

ISBN: (纸本)9798350372076

关键词： Photonic integrated circuits

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WIME Systematic Innovation Method based on 6WHI and Total Factor Matrix Analysis

WIME Systematic Innovation Method based on 6WHI and Total Fa...

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2023 International Conference on Electronic, Electrical and Information Technology, EEIT 2023

作者： Li, Xianing Hou, Bing Zhang, Jiqun Xiao, Yanling Liu, Lian Mi, Lan China University of Petroleum Beijing102249 China Research Institute of Petroleum Exploration & Development Beijing100083 China Artificial Intelligence Technology R&D Center for Exploration and Development CNPC Beijing100083 China Northeast Petroleum University Daqing163318 China

The involved object of systematic innovation and management is neither a single goal nor a single meth-od. Firstly, the research object is a systematic and organic whole composed of multiple node elements with a certain degree of correlation. Secondly, the research method is multi-dimensional, comprehensive, all round and highly efficient. Innovation should break through the existing thinking framework, change the existing structure, add new components, give new energy and produce new functions. The 5W1H is a questioning approach and a problem-solving method that answers all the basic elements within a problem which are what, who, when, where, why, and how. It aims to view ideas from various perspectives and gain an in-depth understanding of a specific situation. On the basis of 5W1H analysis method, this paper puts forward the 6WHI systematic innovation management method, which increases the query words weather and if of the innovation expansion solution, increases the number of questions from 6 to 8, and expands innovative forward-looking and innovative solutions diversity, with smoother pronunciation, more exciting storm. Furthermore, a systematic innovation method based on 6WHI and total factor analysis is established, and a more general and normative model WIME method is presented. This method can be utilized as a continuous process-improvement technique in an organization. Taking the 17 letters of "if question patents"as the prefix, they are just 17 common key elements in system management and innovation. For each element mentioned above, 8 questions and answers of 6WHI are given to realize systematic management and innovation. The above two types of work are arranged according to the matrix format, and then the weighted evaluation method is introduced to evaluate the above management and innovation work, so as to give a general and standardized systematic management and innovation (WIME) method. © Published under licence by IOP Publishing Ltd.

关键词： Factor analysis

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development of Technology Enabling Selective Product realization Through Hot Stamping Heating Temperature Control 9

Development of Technology Enabling Selective Product Realiza...

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9th International Conference on Hot Sheet Metal Forming of High-Performance Steel, CHS2 2024

作者： Kong, Je Youl Yoon, Seung Chae Park, Jae Myung Park, Kye Jung Lee, Chang Yong Lee, Yul dong Lee, Chang Wook Hyundai-steel Co. Ltd Hyundai-steel R&D center Dangjin-Si31719 Korea Republic of Hyundai Motors Company Research & Development Division Hwaseong-Si18280 Korea Republic of

ISBN: (纸本)9780930767303

In response to the ever-increasing environmental and safety standards within the automotive industry, there is a continuous effort to develop diverse hot stamping steels and application methods for vehicle bodies. Tailor Welded Blanks (TWB) components, incorporating high-strength hot stamping steels, are commonly utilized for body parts requiring superior energy absorption during collisions. To meet specific design requirements, a combination of high-strength hot stamping steel and 550 MPa or 1.0 GPa grade high-toughness steels is employed. This study introduces an innovative hot stamping process that attains exceptional energy absorption characteristics of 700-800 MPa using a 1.0 GPa grade steel. The method involves temperature control during the heating process, facilitating the realization of intermediate-level high-toughness properties between the 550 MPa and 1.0 GPa grades. This approach offers the distinct advantage of using the same cold-rolled steel sheet for various applications, providing flexibility in design implementation. © CHS2 2024 . All rights reserved.

关键词： Energy absorption

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robust Adaptive Autonomous Braking Control for Intelligent Electric Vehicles*

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IFAC-PapersOnLine 2023年第2期56卷 11821-11826页

作者： dohee Kim Jinrak Park Sungdeok Kim Eo Jeong Soo Vehicle Control Development Center R&D Division Hyundai Motor Company Republic of Korea

This paper presents a two-stage autonomous braking control for electric vehicles with preview information acquired by intelligent transportation systems (ITS) or connected and autonomous vehicle (CAV) technologies. The goal of the control method is firstly to plan a speed profile to comply with a target speed and a target residual distance to an upcoming deceleration event and then to track the planned speed profile by generating tracking-driven braking control torques, which maximally employ regenerative braking. Once deceleration circumstances are perceived, the intelligent reference speed planner computes a smooth speed profile by using a current vehicle speed, a target speed, and a target residual distance. For the braking control to robustly track the planned speed profile, a chattering-free sliding mode controller is designed on the interconnected vehicle and braking system model with braking system uncertainties and external disturbances, and a sufficient condition for the sliding mode gain is introduced. Also, adaptive update laws to compensate for the braking system uncertainties provide feed-forward control efforts for the tracking control inputs. To verify the effectiveness of the proposed control approach, the control methods are applied to a real commercial vehicle and the consecutive driving experiments with various deceleration circumstances illustrate a successful tracking-driven cooperative braking performance.

关键词： Intelligent autonomous vehicles electric vehicle automotive control robust control

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Oncology research 2024年第2期32卷 421-432页

作者： SEUNG-HEE GWAK JUHYUN LEE EUNJI OH dOHYUN LEE WONSHIK HAN JONGMIN KIM KYONG-TAI KIM Department of Life Sciences Pohang University of Science and TechnologyPohang37673Korea R&D Center NovMetaPharma Co.Ltd.Pohang37668Korea Department of Surgery and Cancer Research Institute Seoul National University College of MedicineSeoul03080Korea Generative Genomics Research Center Global Green Research&Development CenterHandong Global UniversityPohang37554Korea

Genetic information is transcribed from genomic dNA to mrNA,which is then translated into threedimensional *** can undergo various post-transcriptional modifications,including rNA editing that alters mrNA sequences,ultimately affecting protein *** this study,rNA editing was identified at the 499th base(c.499)of human vaccinia-related kinase 2(VrK2).This rNA editing changes the amino acid in the catalytic domain of VrK2 from isoleucine(with adenine base)to valine(with guanine base).Isoleucine-containing VrK2 has higher kinase activity than the valine-containing VrK2,which leads to an increase in tumor cell *** we reported that VrK2 directly interacts with dystrobrevin-binding protein(dysbindin)and results in reducing its ***,we demonstrate that isoleucine-containing VrK2 decreases the level of dysbindin than valinecontaining *** interacts with cyclin d and thereby regulates its expression and *** reduction in the level of dysbindin by isoleucine-containing VrK2 further enhances the cyclin d expression,resulting in increased tumor growth and reduction in survival *** has also been observed that in patient samples,VrK2 level was elevated in breast cancer tissue compared to normal breast ***,the isoleucine form of VrK2 exhibited a greater increase in breast cancer ***,it is concluded that VrK2,especially dependent on the 167th variant amino acid,can be one of the indexes of tumor progression and proliferation.

关键词： VrK2 Kinase activity Breast cancer Tumor rNA editing Cell proliferation Cell growth

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A Convenient Analytical Model for Predicting direct-on-Line Synchronous reluctance Motor Operations at different Environments

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IEEE Transactions on Industry Applications 2023年第2期60卷 2756-2763页

作者： Liu, Cheng-Tsung Su, Ying-Jie Yen, Sheng-Chan Yang, Kuan Shih, Pei-Chun Hsu, Yu-Wei Lin, Sheng-Yang The Department of Electrical Engineering National Sun Yat-Sen University Kaohsiung80424 Taiwan The Research and Development Center Nidec Taiwan Corporation Tainan70955 Taiwan The Green Energy and System Integration R&D Department China Steel Corporation Kaohsiung81233 Taiwan

To meet the driven objectives in the metals industry with relatively severe operational environments, the induction motor is generally adopted due to its rigid structure. However, for energy conservation and environmental concerns, some globally enforced regulations have complicated the design and increased the cost of developing high-efficiency induction motors. Because the direct-on-line synchronous reluctance motor (dOL_SynrM) has a comparably robust structure with almost no rotor copper loss, it has become a potential alternative for accomplishing the desired high-efficiency operational objectives. For investigating the line-start capabilities and operational impacts of different dOL_SynrM designs for specific equipment with reasonably good performance predictions, a convenient analytical model is proposed. Supported by the results from both finite-element analyses and experimental measurements, the suitability of the proposed model can thus be confirmed. © 2023 IEEE.

关键词： Equivalent circuits

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Innovative Fluid Characterization Methodology for Ultradeep Tight reservoirs in different Formation Types: Tarim Basin Case Studies

Innovative Fluid Characterization Methodology for Ultradeep ...

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2025 International Petroleum Technology Conference, IPTC 2025

作者： Huan, Zhipeng Zhang, Wei Ni, Xiaowei Ai, Yong Cai, Liang Wang, Wei Wu, Jin Long Cao, Yingchang China University of Petroleum Shandong Qingdao China PetroChina Tarim Oilfield Company Xinjiang Korla China R&D Center for Ultra-Deep Complex Reservoir Exploration and Development CNPC Xinjiang Korla China SLB Beijing China

ISBN: (纸本)9781959025436

The Tarim Basin, located in the Xinjiang Uygur Autonomous region of China, is renowned for its substantial oil and gas reserves. The geological formations in the basin span various geological periods, contributing to its rich hydrocarbon resources. The reservoir is located deep to more than 8000 meters vertically and consists of various lithologies. The reservoirs are rich in fractures but have tight petrophysical properties. Fluid identification is crucial to locate the sweet spot for exploration and development. resistivity is the most common and straight-forward method for fluid identification, however, because of the mixed effects from pore structure, the influence of the surrounding rocks formation, sedimentary dips, and far-end fractures etc., hydrocarbons and water cannot be easily distinguished based on the resistivity difference. In tight carbonates, the Archie equation is not a satisfactory solution due to the reservoir's strong heterogeneity in mineralogy and pore structure. The compressional coefficient and Poisson's ratio do not exhibit an obvious crossover effect because of the compaction effect on rock sonic waves. New wireline logging techniques were developed to provided non-electrical solutions, including T1-T2 based nuclear magnetic resonance (NMr), advanced spectroscopy and pulsed neutron measurements. T1-T2 based 2d NMr measurements provide porosity and permeability information from T2-based analysis. When used in conjunction with T1 -based measurements, fluid identification through different T1-T2 response offers an advantage for distinguishing hydrocarbons and water. The continuous measurement enables separation and quantitation of different fluids within the pore system throughout the entire interval of the targeted reservoir. Advanced spectroscopy uses both capture and inelastic gamma ray spectroscopy measurements, providing precise dry weights for elements and minerals, along with total organic carbon (TOC). It also provides thermal neutron

关键词： Proven reserves

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Assessment of recoverable oil and gas resources by in-situ conversion of shale——Case study of extracting the Chang 7_(3) shale in the Ordos Basin

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Petroleum Science 2022年第2期19卷 441-458页

作者： Lian-Hua Hou Xia Luo Sen-Hu Lin Yong-Xin Li Li-Jun Zhang Wei-Jiao Ma Research Institute of Petroleum Exploration&Development PetroChinaBeijing100083China National Energy Tight Oil&Gas R&D Center Beijing100083China School of Geosciences China University of PetroleumQingdaoShandong266580China

The purpose of this study is to investigate the entire evolution process of shales with various total organic contents(TOC)in order to build models for quantitative evaluation of oil and gas yields and establish methods for assessing recoverable oil and gas resources from in-situ conversion of organic matters in *** simulation experiments under in-situ conversion conditions were conducted on Chang 7_(3) shales from the Ordos Basin in a semi-open system with large *** results showed that TOC and r_(o) were the key factors affecting the in-situ transformation potential of *** remaining oil and gas yields increased linearly with TOC but inconsistently with r_(o).r_(o) ranged 0.75%—1.25%and 1.05%—2.3%,respectively,corresponding to the main oil generation stage and gas generation stage of shale in-situ *** a model to evaluate the remaining oil/gas yield with TOC and r_(o) was *** TOC of shale suitable for in-situ conversion should be greater than 6%,whereas its r_(o) should be less than 1.0%.Shales with 0.75%(r_(o))could obtain the best economic *** results provided a theoretical basis and evaluation methodology for predicting the hydrocarbon resources from in-situ conversion of shale and for the identification of the optimum“sweet spots”.The assessment of the Chang 7_(3) shale in the Ordos Basin indicated that the recoverable oil and gas resources from in-situ conversion of organic matters in shale are substantial,with oil and gas resources reaching approximately 450×10^(8) t and 30×10^(12)m^(3),respectively,from an area of 4.27×10^(4) km^(2).

关键词： Shale oil In-situ conversion processing Thermal simulation experiment Hydrocarbon generation mechanism Hydrocarbon resource Ordos basin

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