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Truck and Trailer Routing Problem Solving by a Backtracking Search Algorithm

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Journal of Systems Science and Information 2020年第3期11卷 253-272页

作者： shiyi yuan Jianwen FU Feng CUI Xin ZHANG School of Economics and Management Beijing University of TechnologyBeijing 100124China Research Department of Beijing Smarter Eye Technology Co. LtdBeijing 100123China Institute of Fundamental and Interdisciplinary Sciences Beijing Union UniversityBeijing 100101China

Truck and trailer routing problem(TTRP)is one of the most frequently encountered problem in city distribution,particularly in populated and intensive *** paper addresses this problem and designs a novel backtracking search algorithm(BSA)based meta-heuristics to solve *** initial population is created by T-sweep heuristic and then based on the framework of backtracking search algorithm,four types of route improvement strategies are used as building blocks to improve the solutions of BSA in the process of mutation and *** computational experiments and results indicate that the proposed BSA algorithm can provide an effective approach to generate high-quality solutions within the satisfactory computational time.

关键词： Truck algorithm trail

Study on the Measurement of Industrial Structure “Sophistication,Rationalization and Ecologicalization” Based on the Dynamic Analysis of Grey Relations——A Case Study of Beijing-Tianjin-Hebei

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Journal of Systems Science and Information 2020年第2期11卷 130-147页

作者： shiyi yuan Xiaopeng SUN Weiguo CHEN Yongwu LI School of Economics and Management Beijing University of TechnologyBeijing 100124China

The Beijing-Tianjin-Hebei region is one of the regions with the most dynamic economies,highest degrees of openness,strongest innovation capacities and largest populations,as well as an important engine driving China’s economic ***,the development of the BeijingTianjin-Hebei region faces many difficulties,including an inefficient distribution of regional functions,imbalance in industrial structure,low sophistication,and serious overburdening of resources and the *** the overall coordinated development of the region has become an urgent *** this paper,according to the conventions of industrial structure optimization,the three core indicators of regional industrial structure rationalization,sophistication and ecologicalization are *** the help of the grey dynamic correlation model,the three indicators are coupled with the economic growth rate,and the industrial structure optimization index of the Beijing-Tianjin-Hebei region is comprehensively *** study shows that rationalization of the industrial structure in the Beijing-Tianjin-Hebei region is increasing but that this trend is not obvious;sophistication of the industrial structure is relatively high and has also been operating at a high level;however,the overall ecological level of the industrial structure in the Beijing-Tianjin-Hebei region is not high and presents the characteristics of high in the middle and low at both *** terms of the relationship between industrial structure and economic growth in the Beijing-Tianjin-Hebei region,ecologicalization of the industrial structure has the greatest influence on economic growth,followed by sophistication of the industrial structure,and rationalization of the industrial structure has the weakest influence.

关键词： ecologicalization grey dynamic analysis degrees industrial structure sophistication rationalization

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中国油田开发主体技术新进展与展望

石油勘探与开发 2018年第4期45卷 657-668页

作者：袁士义王强中国石油咨询中心北京100724 提高石油采收率国家重点实验室北京100083 中国石油勘探开发研究院北京100083

随着油田开发主体技术的不断进步,开采多年的老油田得以持续有效深化开发,原来认为难以开采的复杂油田得以有效开发动用,大幅度提高了资源的利用率和石油的保障供给能力。通过系统总结中国中高渗高含水、低渗透、稠油、复杂断块、特殊... 详细信息

随着油田开发主体技术的不断进步,开采多年的老油田得以持续有效深化开发,原来认为难以开采的复杂油田得以有效开发动用,大幅度提高了资源的利用率和石油的保障供给能力。通过系统总结中国中高渗高含水、低渗透、稠油、复杂断块、特殊岩性等油田近10年来开发主体技术取得的新进展,特别是在提高采收率技术方面取得的国际领先成就,分析了各类油田开发面临的问题与挑战,提出了"配套应用、攻关试验、超前储备"三代主体技术滚动接替的发展路线和技术方向。建议的重点研究工作有:(1)进一步完善老油田精细注水和化学驱、化学驱后提高采收率、低渗油藏注气等理论技术的研发和矿场试验;(2)加强纳米智能驱、原位改质、同井注采等颠覆性技术的基础理论方法研究;(3)超前储备适应低油价、新领域(深海、深层、非常规等)、高难度(四次采油、超低渗三次采油等)条件下提高采收率的新技术。通过开发技术及油藏管理的不断创新,推动油田开发主体技术的研发换代和有序接替,实现油田开发的可持续发展。

关键词：油藏类型油田开发提高采收率主体技术技术发展

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Progress and prospects of carbon dioxide capture,EOR-utilization and storage industrialization

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Petroleum Exploration and Development 2022年第4期49卷 955-962页

作者： yuan shiyi MA Desheng LI Junshi ZHOU Tiyao JI Zemin HAN Haishui CNPC Advisory Center Beijing 100724China State Key Laboratory of Enhanced Oil Recovery Beijing 100083China Research Institute of Petroleum Exploration&Development PetroChinaBeijing 100083China

Carbon dioxide capture,EOR-utilization and storage(CCUS-EOR)are the most practical and feasible large-scale carbon reduction technologies,and also the key technologies to greatly improve the recovery of low-permeability oil *** paper sorts out the main course of CCUS-EOR technological development abroad and its industrialization *** progress of CCUS-EOR technological research and field tests in China are summarized,the development status,problems and challenges of the entire industry chain of CO_(2) capture,transportation,oil displacement,and storage are *** results show a huge potential of the large-scale application of CCUS-EOR in China in terms of carbon emission reduction and oil production *** present,CCUS-EOR in China is in a critical stage of development,from field pilot tests to *** at the feature of continental sedimentary oil and gas reservoirs in China,and giving full play to the advantages of the abundant reserves for CO_(2) flooding,huge underground storage space,surface infrastructure,and wide distribution of wellbore injection channels,by cooperating with carbon emission enterprises,critical technological research and demonstration project construction should be accelerated,including the capture of low-concentration CO_(2) at low-cost and on large-scale,supercritical CO_(2) long-distance transportation,greatly enhancing oil recovery and storage rate,and CO_(2) large-scale and safe ***-EOR theoretical and technical standard system should be constructed for the whole industrial chain to support and promote the industrial scale application,leading the rapid and profitable development of CCUS-EOR emerging industrial chain with innovation.

关键词： carbon dioxide CCUS-EOR carbon capture transportation oil displacement carbon storage enhanced oil recovery industrialization

Stable Carbon Isotope Geochemical and Hydrochemical Features in the System of Carbonate-H_2O-CO_2 and Their Implications—Evidence from Several Typical Karst Areas of China

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Acta Geologica Sinica(English Edition) 1997年第4期71卷 446-454页

作者： Liu Zaihua, yuan Daoxian and He shiyi Institute of Karst Geology, 40 Qixing Rd., Guilin, Guangxi 541004

On the basis of hydrochemical observation and experimental calculation, the features of stable carbon isotope geochemistry in the karst dynamic systems of the Guilin Karst Experimental Site, Huanglong Ravine and Wujiangdu Dam Site are summarized in this study. Furthermore, an attempt has been made to solve several geochemical problems, such as the origin of CO2 in the system, kinetic fractionation of carbon isotopes during calcite deposition, hydrochemistry and formation of tufa, and carbon-14 dating of tufa of hydrothermal origin. The results show that three kinds of karst dynamic system can be distinguished: (1) the shallow system, such as the Guilin Karst Experimental Site, in which soil CO2 provides the an active agent for karst processes; (2) the geothermal system, such as the Huanglong Ravine, in which metamorphic or/ and juvenile CO, is the source of activity for karst; (3) the anthropogenic system, such as the Wujiangdu Dam Site, in which the stable carbon isotope geochemical and hydrochemical features have been greatly affected by human activity.

关键词： karst dynamic system stable carbon isotope geochemistry hydrochemistry tufa formation carbon source

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可动凝胶深部调驱动态预测方法研究

石油学报 2006年第4期27卷 76-80页

作者：冯其红袁士义韩冬杨山中国石油大学石油工程学院山东东营257061 中国石油勘探开发研究院北京100083 中国海洋石油有限公司湛江分公司广东湛江524057

针对目前只能借助于数值模拟才能进行可动凝胶深部调驱动态预测的问题,依据水驱动态预测方法,结合可动凝胶深部调驱的作用机理,采用体积加权法校正驱替体系地下的等效粘度,并根据残余阻力系数校正地层的非均质性,建立了可动凝胶深部调... 详细信息

针对目前只能借助于数值模拟才能进行可动凝胶深部调驱动态预测的问题,依据水驱动态预测方法,结合可动凝胶深部调驱的作用机理,采用体积加权法校正驱替体系地下的等效粘度,并根据残余阻力系数校正地层的非均质性,建立了可动凝胶深部调驱的动态预测模型。该模型可用于预测可动凝胶深部调驱的含水率、产油量、产水量等指标的变化规律,还可预测其提高采收率幅度和增油降水等指标,为可动凝胶深部调驱方案设计和效果预测提供了依据。另外,对模型的参数进行了敏感性分析,对一个实际井组的调驱效果进行了测试。

关键词：可动凝胶水驱动态预测模型开发指标原油采收率敏感性分析

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粮食价格波动与粮食安全状态传导性研究

价格理论与实践 2024年第2期 103-108页

作者：袁世一中国农业科学院农业信息研究所

研究粮食价格的传导机制,对于保障粮食安全状态稳定至关重要。本文运用STL-NAR组合模型在价格分量基础上对四种粮食(稻谷、玉米、大豆、小麦)价格进行预测,采用符号动力学将粮食价格涨跌描述为不同的价格状态。同时,运用隐马尔科夫链模... 详细信息

研究粮食价格的传导机制,对于保障粮食安全状态稳定至关重要。本文运用STL-NAR组合模型在价格分量基础上对四种粮食(稻谷、玉米、大豆、小麦)价格进行预测,采用符号动力学将粮食价格涨跌描述为不同的价格状态。同时,运用隐马尔科夫链模型构建了粮食价格与粮食安全的状态转移矩阵。研究结果表明,STL-NAR模型对稻谷、玉米、大豆和小麦价格具有良好的预测性。预测结果显示:2024年稻谷价格呈小幅上涨趋势,小麦价格呈倒“V”型趋势,玉米和大豆价格呈下降趋势。粮食安全稳定程度与价格传导之间存在一定的关系,但两者并不完全一致。当粮食安全稳定时,价格传导相对顺畅,粮食价格往往呈下降趋势;而当粮食安全的稳定性与粮食价格传导受阻时,则需要通过采取有效的政策调控措施,保障粮食安全和粮食价格稳定。

关键词：粮食安全粮食价格预测 STL-NAR 隐马尔科夫链

Key theoretical and technical issues and countermeasures for effective development of Gulong shale oil, Daqing Oilfield, NE China

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Petroleum Exploration and Development 2023年第3期50卷 638-650页

作者： yuan shiyi LEI Zhengdong LI Junshi YAO Zhongwen LI Binhui WANG Rui LIU Yishan WANG Qingzhen CNPC Advisory Center Beijing 100724China PetroChina Research Institute of Petroleum Exploration&Development Beijing 100083China PetroChina Daging Oilfield Co. Ltd.Daging 163002China

Aiming at the four issues of underground storage state,exploitation mechanism,crude oil flow and efficient recovery,the key theoretical and technical issues and countermeasures for effective development of Gulong shale oil are put *** key exploration and research on fluid occurrence,fluid phase change,exploitation mechanism,oil start-up mechanism,flow regime/pattern,exploitation mode and enhanced oil recovery(EOR)of shale reservoirs with different storage spaces,multi-scale occurrence states of shale oil and phase behavior of fluid in nano confined space were provided,the multi-phase,multi-scale flow mode and production mechanism with hydraulic fracture-shale bedding fracture-matrix infiltration as the core was clarified,and a multi-scale flow mathematical model and recoverable reserves evaluation method were preliminarily *** feasibility of development mode with early energy replenishment and recovery factor of 3o%was *** on these,the researches of key theories and technologies for effective development of Gulong shale oil are proposed to focus on:(1)in-situ sampling and non-destructive testing of core and fluid;(2)high-temperature,high-pressure,nano-scale laboratory simulation experiment;(3)fusion of multi-scale multi-flow regime numerical simulation technology and large-scale application software;(4)waterless(CO_(2))fracturing technique and the fracturing technique for increasing the vertical fracture height;(5)early energy replenishment to enhance oil recovery;(6)lifecycle technical and economic ***,a series of exploitation tests should be performed on site as soon as possible to verify the theoretical understanding,optimize the exploitation mode,form supporting technologies,and provide a generalizable development model,thereby supporting and guiding the effective development and production of Gulong shale oil.

关键词： Gulong shale oil continental shale oil nano confined space production mechanism flow mode early energy replenishment enhanced oil recovery

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注气提高采收率技术进展及前景展望

石油学报 2020年第12期41卷 1623-1632页

作者：袁士义王强李军诗韩海水中国石油天然气集团有限公司咨询中心北京100724 提高石油采收率国家重点实验室北京100083 中国石油勘探开发研究院北京100083

在跟踪调研全球注气提高采收率技术发展及应用的基础上,总结分析了国外气驱提高采收率技术发展历程及CO2驱、碳捕集利用与封存(CCUS)、烃气驱、顶部注气重力驱、空气驱等矿场成功应用实例和对中国发展气驱的启示。对中国以陆相沉积为主... 详细信息

在跟踪调研全球注气提高采收率技术发展及应用的基础上,总结分析了国外气驱提高采收率技术发展历程及CO2驱、碳捕集利用与封存(CCUS)、烃气驱、顶部注气重力驱、空气驱等矿场成功应用实例和对中国发展气驱的启示。对中国以陆相沉积为主的油藏10余年CO2驱(CCUS)、顶部注烃气驱、减氧空气驱等注气提高采收率技术领域形成的特色理论、关键技术和矿场试验进行了总结研究。参照美国注气技术发展历程,分析了中国适宜气驱的油藏类型及潜力、气源及注入方式、配套技术发展、试验类型及成效,明确了中国注气技术已处于从工业试验向工业化规模推广应用发展的关键阶段,未来5~10年有望上产至年产油(500~1000)×104t,将发展成为中国继热采、化学驱后最重要的油田提高采收率技术,对中国原油稳产将起到重要保障作用。同时分析了中国注气技术发展尚面临油藏条件、试验类型和规模、气源供给、配套技术及成本、政策支持等方面的问题,从国家和各大石油公司层面给出了加快气驱关键技术攻关试验及有效规模应用的对策建议。

关键词：注气提高采收率技术进展前景展望对策建议