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Journal of Wuhan University of Technology(Materials Science) 2024年第1期39卷 160-166页

作者： A Visagan P Ganesh Department of production Technology Madras Institute of TechnologyChennai-600044India

We investigated the parametric optimization on incremental sheet forming of stainless steel using Grey Relational Analysis(GRA) coupled with Principal Component Analysis(PCA). AISI 316L stainless steel sheets were used to develop double wall angle pyramid with aid of tungsten carbide tool. GRA coupled with PCA was used to plan the experiment conditions. Control factors such as Tool Diameter(TD), Step Depth(SD), Bottom Wall Angle(BWA), Feed Rate(FR) and Spindle Speed(SS) on Top Wall Angle(TWA) and Top Wall Angle Surface Roughness(TWASR) have been studied. Wall angle increases with increasing tool diameter due to large contact area between tool and workpiece. As the step depth, feed rate and spindle speed increase,TWASR decreases with increasing tool diameter. As the step depth increasing, the hydrostatic stress is raised causing severe cracks in the deformed surface. Hence it was concluded that the proposed hybrid method was suitable for optimizing the factors and response.

关键词： single point incremental forming AISI 316L taguchi grey relation analysis principal component analysis surface roughness scanning electron microscopy

Horizontal well spacing optimization and gas injection simulation for the ultra-low-permeability Yongjin reservoir

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Energy Geoscience 2024年第1期5卷 196-203页

作者： Yao Zhang Chengyuan Lv Zengmin Lun Shuxia Zhao Yingfu He Ran Gao SINOPEC Exploration and production Research Institute BeijingChina

Optimal spacing for vertical wells can be effectively predicted with several published methods,but methods suitable for assessing the proper horizontal well spacing are *** work proposes a method for calculating the optimal horizontal well spacing for an ultra-low permeability reservoir e the Yongjin reservoir in the Juggar Basin,northwestern *** result shows that a spacing of 640m is the most economical for the development of the *** better develop the reservoir,simulation approaches are used and a new model is built based on the calculated well *** the reservoir has an ultralow permeability,gas injection is regarded as the preferred enhanced oil recovery(EOR)*** of different gases including carbon dioxide,methane,nitrogen and mixed gas are *** results show that carbon dioxide injection is the most efficient and economical for the development of the ***,if the reservoir produces enough methane,reinjecting methane is even better than injecting carbon dioxide.

关键词： Ultra-low-permeability reservoir Well spacing optimization Numerical simulation Gas injection EOR

Effects of fluid flow rate and viscosity on gravel-pack plugging and the optimization of sand-control wells production

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Petroleum Exploration and Development 2019年第6期46卷 1251-1259页

作者： DONG Changyin ZHOU Yugang CHEN Qiang ZHU Chunming LI Yanlong LI Xiaobo LIU Yabin Key Laboratory of Unconventional Oil&Gas Development(China University of Petroleum(East China)) Ministry of EducationQingdao 266580China Qingdao Institute of Marine Geology Qingdao 266073China production optimization-COSL Tianjin 300459China

Series of experiments were performed to simulate the invasion of formation sand into and the plugging process of gravel-pack at different viscosities and flowing rates of *** types of formation sands with the medium size of 0.10 mm and 0.16 mm and the quartz sand and ceramsite of 0.6-1.2 mm were used in the experiments.A new viscosity-velocity index(the product of fluid viscosity and velocity)was put forward to characterize the influencing mechanism and law of physical property and flow condition of formation fluid on gravel-pack plugging,and a new method to optimize the production rate of wells controlling sand production with gravel-packing was *** results show that the permeability of formation sand invaded zone and final permeability of plugged gravel-pack have negative correlations with viscosity and flow velocity of fluid,the higher the flow velocity and viscosity,the lower the permeability of formation sand invaded zone and final permeability of plugged gravel-pack will *** flow velocity and viscosity of fluid are key factors affecting plugging degree of the gravel *** viscosity-velocity index(v-v index)can reflect the flow characteristics of fluid very well and make it easier to analyze the plugging mechanism of gravel *** different combinations of fluid viscosity and flow velocity,if the v-v index is the same or close,their impact on the final gravel permeability would be the same or *** the increase of the v-v index,the permeability of plugged gravel zone decreases first,then the reduction rate slows down till the permeability *** optimizing production and increasing production step by step,the optimal working scheme for sand-control well can reduce the damage to gravel-pack zone permeability caused by sand-carrying fluid effectively,and increase well productivity and extend the sand control life.

关键词： gravel-pack sand retention experiment plugging law viscosity-velocity index working scheme optimization method plugging simulation

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Diminishing the Perception Bias in the Working Environment Using a Network Generation-Based Framework

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Tsinghua Science and Technology 2024年第3期29卷 671-683页

作者： Jun Qian Tongda Zhang Xiao Sun Yueting Chai Department of Automation Tsinghua UniversityBeijing 100084China Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518055Chinaand with Systems Optimization LaboratoryStanford UniversityPalo AltoCA 94305USA

Income inequality is widespread in human society and has important implications for human ***’s perception of the environment bridges income inequality and individual behavioral *** research suggests that social income inequality is usually biased,either overestimated or ***,such phenomena have not been fully explored with quantitive prove,especially in the working environment based on performance data of actual *** fact,the correct perception of people is the basis of a fair environment for their production ***,the perception bias may weaken the adaptability and competitiveness of a company in the *** paper first confirms the prevalence of individual perception bias of income inequality within the working environment based on actual production *** results show that people tend to underestimate income inequity around them,and this underestimation grows with the real unfairness of the working ***,this paper proposes a network generation-based framework with a three-layer structure to correct perception bias using a cooperative network reengineering *** the framework,a homophily-based generative network model is proposed as the key *** simulation results show that our proposed framework effectively reduces individuals’perception bias of income inequality.

关键词： income inequality perception bias Gini coefficient factory production cooperative networkreengineering homophily-based generative network model

Pricing and production strategies in remanufacturing from the perspectives of supply chain: Review and future directions

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Frontiers of Engineering Management 2024年第1期11卷 1-15页

作者： Kai LI Yan LI Nenggui ZHAO School of Management Hefei University of TechnologyHefei 230009China Key Laboratory of Process optimization and Intelligent Decision-making Ministry of EducationHefei 230009China

Remanufacturing is widely recognized as beneficial to the environment and a circular economy. However, remanufacturing is more complex than traditional manufacturing due to the effects of government policy, uncertainty of consumer preferences, competition and cooperation among firms, and so on. These factors motivate academics to optimize remanufacturing outcomes, especially for product pricing and production. This study reviews the published literature on pricing and production strategies in remanufacturing from four perspectives of supply chain, namely, government policy, consumer characteristics, relationships among firms, and supply chain structures. Review results can benefit scholars/practitioners in the future by highlighting the challenges and opportunities in remanufacturing strategies.

关键词： remanufacturing reverse and closed-loop supply chain circular economy

A New Distribution Method for Wet Steam Injection optimization

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Fluid Dynamics & Materials Processing 2024年第1期20卷 109-126页

作者： Jingjing Gao Xingkai Zhang Hubei Key Laboratory of Oil and Gas Drilling and production Engineering Yangtze UniversityWuhan434000China

A new approach and a new related distribution system are proposed to address the issue of uneven steam injection caused by the different suction capacities of the used wells during the application of steam“stimulation”methods for enhanced oil *** new distribution system consists of a swirler,spiral dividing baffles,and critical flow *** simulations are used to analyze the flow-field and degree of steam homogeneity obtained with such an *** results indicate that a higher inlet pressure leads to better ***,the internal flow field becomes more stable,and the deviation from an even distribution reduces to±4.0%even when the resistance of each branch is ***,field tests have yielded satisfactory results.

关键词： Cyclical steam stimulation homogeneous distribution gas-liquid two-phase flow critical flow nozzle

Hybrid data-driven framework for shale gas production performance analysis via game theory, machine learning, and optimization approaches

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Petroleum Science 2023年第1期20卷 277-294页

作者： Jin Meng Yu-Jie Zhou Tian-Rui Ye Yi-Tian Xiao Ya-Qiu Lu Ai-Wei Zheng Bang Liang Petroleum Exploration and production Research Institute SINOPECBeijing100083PR China Jianghan Oilfield Company Research Institute of Exploration and DevelopmentSINOPECWuhan430223HubeiPR China

A comprehensive and precise analysis of shale gas production performance is crucial for evaluating resource potential,designing a field development plan,and making investment ***,quantitative analysis can be challenging because production performance is dominated by the complex interaction among a series of geological and engineering *** fact,each factor can be viewed as a player who makes cooperative contributions to the production payoff within the constraints of physical laws and *** by the idea,we propose a hybrid data-driven analysis framework in this study,where the contributions of dominant factors are quantitatively evaluated,the productions are precisely forecasted,and the development optimization suggestions are comprehensively *** specifically,game theory and machine learning models are coupled to determine the dominating geological and engineering *** Shapley value with definite physical meaning is employed to quantitatively measure the effects of individual factors.A multi-model-fused stacked model is trained for production forecast,which provides the basis for derivative-free optimization algorithms to optimize the development *** complete workflow is validated with actual production data collected from the Fuling shale gas field,Sichuan Basin,*** validation results show that the proposed procedure can draw rigorous conclusions with quantified evidence and thereby provide specific and reliable suggestions for development plan *** with traditional and experience-based approaches,the hybrid data-driven procedure is advanced in terms of both efficiency and accuracy.

关键词： Shale gas production performance Data-driven Dominant factors Game theory Machine learning Derivative-free optimization

China’s Energy System Development Prospect and New Quality Productive Forces

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China Oil & Gas 2024年第3期31卷 29-35页

作者： Zhang Sheng SINOPEC Petroleum Exploration and production Research Institute

Entering the post epidemic recovery stage,China’s economic development features acceleration of industrial structure optimization and *** energy demand is increasing rigidly,energy utilization efficiency is steadily improving,with cleaner energy consumption proportion *** direct relationship between China’s economic growth and its emissions may be *** quality productive forces as characterized by innovation,greener and smarter manufacturing,industrial integration and promotion of high-quality economic development,are highly consistent with China’s energy transformation to drive an all-round green and low-carbon development in economy and *** are bound to play an increasing important role in achieving energy security and build China’s strength in energy.

关键词： promotion acceleration Quality

Modeling and optimization for oil well production scheduling

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Chinese Journal of Chemical Engineering 2016年第10期24卷 1423-1430页

作者： Jin Lang Jiao Zhao The Institute of Industrial Engineering and Logistics optimization Northeastern University State Key Laboratory of Synthetical Automation for Process Industries Northeastern University School of Automobile Chang'an University

In this paper,an oil well production scheduling problem for the light load oil well during petroleum field exploitation was *** oil well production scheduling was to determine the turn on/off status and oil flow rates of the wells in a given oil reservoir,subject to a number of constraints such as minimum up/down time limits and well *** problem was formulated as a mixed integer nonlinear programming model that minimized the total production operating cost and start-up *** to the NP-hardness of the problem,an improved particle swarm optimization(PSO) algorithm with a new velocity updating formula was developed to solve the problem *** experiments on randomly generated instances were carried out to evaluate the performance of the model and the algorithm's *** with the commercial solver CPLEX,the improved PSO can obtain high-quality schedules within a much shorter running time for all the instances.

关键词：油井生产安排混合整数非线性的编程(MINLP ) 改进粒子群优化

optimization of adsorbent dose and contact time for the production of jackfruit waste nutrient-enriched biochar

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Waste Disposal and Sustainable Energy 2023年第1期5卷 63-74页

作者： Denis Nsubuga Isa Kabenge Ahamada Zziwa Vianney Andrew Yiga Yusufu Mpendo Mawejje Harbert Ronald Kizza Noble Banadda Kerstin D.Wydra Department of Agricultural and Biosystems Engineering Makerere UniversityP.O.Box 7062KampalaUganda Department of Mechanical Engineering Makerere UniversityP.O.Box 7062KampalaUganda Department of Agricultural production Makerere UniversityP.O.Box 7062KampalaUganda School of Engineering University of British ColumbiaEME242-1137 Alumni AveKelownaBCCanada Plant production and Climate Change Erfurt University of Applied SciencesLeipziger Straβe 7799085ErfurtGermany

Raw biochar can be enriched with nutrients from digestates through adsorption producing nutrient-enriched *** nutrient-enriched biochar can be used as a soil amendment to support sustainable *** study assessed the effect of adsorbent dose and contact time on the jackfruit waste biochar adsorption of essential nutrients of nitrogen,phosphors and potassium from the *** surface methodology(RSM)using central composite design(CCD)was utilized to optimize the adsorbent dose and contact time during the adsorption *** adsorbent dose of 20–70 mg/g and contact time range of 48–120 h were used in this *** optimal adsorbent dose and contact time were found to be 20 mg/g and 114.6 h,*** corresponding optimum nitrogen,phosphorus and potassium adsorbed were 17.44,20.94,and 21.36 mg/g,*** for the prediction of these values for nitrogen,phosphorus and potassium had R2 values of 0.9801,0.9804 and 0.9843,respectively,and non-significant lack of fit(p<0.05).This indicates the suitability of the models in predicting the adsorption conditions of adsorbent dose and contact time to produce high-quality nutrient-enriched biochar.

关键词： Adsorption Response surface methodology Digestate Nutrient-enriched biochar