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Two stages power generation test of the hot dry rock exploration and production demonstration project in the Gonghe Basin,northeastern Qinghai-Tibet plateau,China

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China Geology 2024年第3期7卷 409-421页

作者： Er-yong Zhang Dong-guang Wen Gui-ling Wang xian-peng jin Lin-you Zhang Hai-dong Wu Wen-shi Wang Cheng-ming Ye Wei Weng Kuan Li jin-sheng Wu xian-chun Tang Chong-yuan Zhang Qing-da Feng Sheng Lian Li-sha Hu Gui-lin Zhu Xing-long Xie Bin Wu Dan Wang Xue Niu Zhao-xuan Niu Dong-lin Liu Hui Zhang Wen-hao Xu Shu-qing Yao Li Yang Center for Hydrogeology and Environmental Geology Survey China Geological SurveyMinistry of Natural ResourcesTianjin 300304China Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological SciencesChina Geological SurveyShijiazhuang 050061China Institute of Exploration Techniques Chinese Academy of Geological SciencesChina Geological SurveyLangfang 065000China Institute of Exploration Engineering China Geological SurveyMinistry of Natural ResourcesBeijing 100083China Institute of Exploration Technology Chinese Academy of Geological SciencesChengdu 611734China Chinese Academy of Geological Sciences China Geological SurveyBeijing 100037China Institute of Geomechanics Chinese Academy of Geological SciencesChina Geological SurveyBeijing 100081China Geoscience Documentation Center China Geological SurveyMinistry of Natural ResourcesBeijing 100083China

The Hot Dry Rock(HDR)is considered as a clean and renewable energy,poised to significantly contribute to the global energy decarbonization *** HDR projects worldwide have accumulated valuable experience in efficient drilling and completion,reservoir construction,and fracture *** 2019,China Geological Survey(CGS)initiated a demonstration project of HDR exploration and production in the Gonghe Basin,aiming to overcome the setbacks faced by HDR *** the ensuing four years,the Gonghe HDR project achieved the first power generation in 2021,followed by the second power generation test in *** establishing the primary well group in the initial phase,two directional wells and one branch well were *** progress was made in successfully constructing the targeted reservoir,realizing inter-well connectivity,power generation and grid connection,implementing of the real-time micro-seismic monitoring.A closed-loop technical validation of the HDR exploration and production was ***,many technical challenges remain in the process of HDR industrialization,such as reservoir fracture network characterization,efficient drilling and completion,multiple fracturing treatment,continuous injection and production,as well as mitigation of induced seismicity and numerical simulation technology.

关键词： Power generation Hot dry rock(HDR) Enhanced geothermal system(EGS) Genesis mechanism Gonghe Basin Directional drilling Reservoir construction Circulation test Induced seismicity Clean energy exploration engineering

CaH2-promoted activity of Ni-carbonate interface for CO2 methanation

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Journal of Energy Chemistry 2025年第1期100卷 522-532页

作者： jin-peng Wang Guo-Cui Mao Hui-Lin Jiang Bao-Xia Dong Yun-Lei Teng School of Chemistry and Chemical Engineering Yangzhou University

Transition metal-carbonate interfaces often act as active sites in heterogeneous catalytic *** interface between transition metal and metal carbonate exhibits a dynamic equilibrium during the CO2hydrogenation reaction,involving surface carbonate hydrogenation and ***,there have been few reports on engineering the activity of the interface between transition metal and alkaline earth metal carbonate for catalytic *** work demonstrated that the incorporation of CaH2in Ni/CaCO3enhances the CO2methanation activity of the *** CO2conversion for Ni/CaH2-CaCO3reached 68.5%at 400°C,which was much higher than that of the Ni/CaCO3（31.6%） and Ni/CaH2-CaO （42.4%） ***,the Ni/CaH2-CaCO3catalysts remained stable during the stability test for 24 h at 400°C and 8 *** research revealed that CaH2played a crucial role in promoting the activity of the Ni-carbonate interface for ***2could modify the electronic structure of Ni and tune the structural properties of CaCO3to generate medium basic sites （OH groups）,which are favorable for the activation of H2and ***-situ Fourier transform infrared spectroscopy （FTIR） analysis combined with density functional theory calculations demonstrated that CO2activation occurs at the hydroxyl group （OH） on the CaH2-modified Ni-carbonate surface,leading to the formation of CO3H****,our study has confirmed that CO2methanation over the Ni/CaH2-CaCO3catalysts proceeds via the formate pathway.

关键词： Metal hydride Ni catalysts Carbonate Metal-carbonate interface

聚丙烯酰胺反相乳液深部调驱先导试验初步结果

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油田化学 2006年第1期23卷 81-84页

作者：雷占祥陈月明陈耀武闫军金显鹏中国石油大学(华东)石油工程学院山东东营257061 胜利油田东胜精攻石油开发集团股份有限公司山东东营257100 中国石油大庆油田公司井下作业分公司大庆161512

题示反相乳液（W／O乳液）以油田污水携带进入地层设定位置后，在环境温度、矿化度及转相剂作用下发生相反转，原分散相中所含的聚丙烯酰胺和交联剂迅速溶于水并生成可流动的水基凝胶，起深部调剖、液流转向及驱替作用。胜利孤岛油田中... 详细信息

题示反相乳液（W／O乳液）以油田污水携带进入地层设定位置后，在环境温度、矿化度及转相剂作用下发生相反转，原分散相中所含的聚丙烯酰胺和交联剂迅速溶于水并生成可流动的水基凝胶，起深部调剖、液流转向及驱替作用。胜利孤岛油田中二南Ng^3-4先导试验区，原始地温69℃，地下原油黏度20～100mPa·s，产出水矿化度5．5g／L，注入水矿化度7．2g／L，包括5口注水井，21口采油井，试验前处于聚驱后的水驱阶段。设计注入聚丙烯酰胺反相乳液在注入水中的稀释液，其中前置段塞浓度8g／L，段塞尺寸8×10^3m，折合反相乳液64t，主体段塞6g／L，1．2×10^4m^3，72t，以及顶替液（注入水）1．2×10^4m^3，连续注入45天。预测先导试验区采收率将提高1．05％，其中高、中、低渗层分别提高0．50％，1．48％，2．47％，含水率降低2．65％，增产油效果将延续至2010年。注水井21-4的调驱作业于2004年12月底开始，共注入反相乳液25吨，转相剂1．75吨，施工注入压力由7．5MPa升至9．5MPa，作业后注水压力由6．8MPa升至7．0MPa；2005年4月统计，对应51：2油井平均日产液量上升21．3％，日产油量上升37．0％，含水率下降1．1％，有4口井产油量增加，1口井持平。图5表2参8。

关键词：聚丙烯酰胺反相乳液交联聚合物可流动凝胶地下成胶体系调驱剂深部调剖注入工艺聚合物驱后油藏胜利孤岛油田

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模糊层次分析法在调剖措施选区中的应用

石油钻采工艺 2006年第4期28卷 36-39页

作者：雷占祥陈月明姜汉桥刘小波金显鹏赵金玲中国石油大学石油工程学院山东东营257061 中国石油大学提高采收率中心北京102249 胜利油田东辛采油厂山东东营257061 大庆油田有限责任公司黑龙江大庆161512 长庆油田公司陕西延安716000

目前调剖措施选区中存在影响因素多、盲目性大等缺陷，为此，引入模糊层次分析法。在0．1—0．9标度的基础上量化调剖措施各评价参数，建立模糊一致矩阵，结合最大隶属度原则，优选出不同区块各评价参数的隶属度，最后将这些隶属度值组... 详细信息

目前调剖措施选区中存在影响因素多、盲目性大等缺陷，为此，引入模糊层次分析法。在0．1—0．9标度的基础上量化调剖措施各评价参数，建立模糊一致矩阵，结合最大隶属度原则，优选出不同区块各评价参数的隶属度，最后将这些隶属度值组合得到各评价参数对最终结果的评价结果。该方法结合了定性和定量分析，消除了专家权重分配困难的缺陷，减少了人为因素的影响。基于以上原理，将此方法应用在聚丙烯酰胺反相乳液调剖选区中，结果表明该方法可降低调剖区块选择的盲目性，使决策结果更加科学合理，并能提高调剖措施成功率。

关键词：模糊层次分析法模糊一致矩阵调剖决策分析选区

The first power generation test of hot dry rock resources exploration and production demonstration project in the Gonghe Basin,Qinghai Province,China

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China Geology 2022年第3期5卷 372-382页

作者： Er-yong Zhang Dong-guang Wen Gui-ling Wang Wei-de Yan Wen-shi Wang Cheng-ming Ye Xu-feng Li Huang Wang xian-chun Tang Wei Weng Kuan Li Chong-yuan Zhang Ming-xing Liang Hong-bao Luo Han-yue Hu Wei Zhang Sen-qi Zhang xian-peng jin Hai-dong Wu Lin-you Zhang Qing-da Feng jing-yu Xie Dan Wang Yun-chao He Yue-wei Wang Zu-bin Chen Zheng-pu Cheng Wei-feng Luo Yi Yang Hao Zhang En-lai Zha Yu-lie Gong Yu Zheng Chang-sheng Jiang Sheng-sheng Zhang Xue Niu Hui Zhang Li-sha Hu Gui-lin Zhu Wen-hao Xu Zhao-xuan Niu Li Yang Center for Hydrogeology and Environmental Geology Survey China Geological SurveyMinistry of Natural ResourcesBaoding 071051China Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological SciencesChina Geological SurveyShijiazhuang 050061China Department of Natural Resources of Qinghai Province Xining 810001China Institute of Exploration Techniques Chinese Academy of Geological SciencesChina Geological SurveyLangfang 065000China Department of Hydrogeology and Environmental Geology China Geological SurveyMinistry of Natural ResourcesBeijing 100037China Chinese Academy of Geological Sciences China Geological SurveyBeijing 100037China Beijing Institute of Exploration Engineering China Geological SurveyMinistry of Natural ResourcesBeijing 100083China Institute of Geomechanics Chinese Academy of Geological SciencesChina Geological SurveyBeijing 100081China Institute of Geophysical and Geochemical Exploration Chinese Academy of Geological SciencesChina Geological SurveyLangfang 065000China Institute of Exploration Technology Chinese Academy of Geological SciencesChina Geological SurveyChengdu 611734China Geoscience Documentation Center China Geological SurveyMinistry of Natural ResourcesBeijing 100083China Jilin University Changchun 130012China Oil and Gas Survey China Geological SurveyMinistry of Natural ResourcesBeijing 100083China Guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhou 510640China Institute of Geophysics China Earthquake AdministrationBeijing 100081China Institute of the Hydrogeology and Engineering Geology of Qinghai Xining 810008China

Hot dry rock(HDR)is a kind of clean energy with significant *** the 1970s,the United States,Japan,France,Australia,and other countries have attempted to conduct several HDR development research projects to extract thermal energy by breaking through key ***,up to now,the development of HDR is still in the research,development,and demonstration *** HDR exploration borehole(with 236℃ at a depth of 3705 m)was drilled into Triassic granite in the Gonghe Basin in northwest China in ***,China Geological Survey(CGS)launched the HDR resources exploration and production demonstration project in *** three years of efforts,a sequence of significant technological breakthroughs have been made,including the genetic model of deep heat sources,directional drilling and well completion in high-temperature hard rock,large-scale reservoir stimulation,reservoir characterization,and productivity evaluation,reservoir connectivity and flow circulation,efficient thermoelectric conversion,monitoring,and geological risk assessment,*** the whole-process technological system for HDR exploration and production has been preliminarily established *** first power generation test was completed in November *** results of this project will provide scientific support for HDR development and utilization in the future.

关键词： Hot dry rock Directional drilling Reservoir stimulation Microseismic monitoring Organic Rankine cycle(ORC) Power generation test Energy geological survey engineering Gonghe Basin Qinghai Province China

Characterization of the new scintillator Cs2LiYCl6:Ce3+

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Nuclear Science and Techniques 2018年第1期29卷 39-44页

作者： Kui-Nian Li xian-peng Zhang Qiang Gui peng jin Geng Tian Northwest Institute of Nuclear Technology Xi’an 710024China School of Nuclear Science and Technology Xi’an Jiaotong University Xi’an 710049 China Beijing Glass Research Institute Beijing 101111 China

The first domestic inorganic scintillator, Cs_2LiYCl_6:Ce^(3+)(CLYC), was grown at Beijing Glass Research Institute using the vertical Bridgman method. In this work, we evaluated the performance of this new CLYC crystal in terms of its gamma-ray energy resolution and pulse shape discrimination(PSD) capability between neutrons and gamma rays. The decay times associated with different scintillation mechanisms were obtained by fitting decay functions to the neutron and gamma-ray waveform structures. We found an energy resolution of * 4.5% for 662-ke V gamma rays and efficient neutron/gamma PSD with a figure of merit of * 2.6. Under gamma-ray excitation, there is an ultrafast scintillation mechanism in CLYC with a decay time of approximately 2 ns, whereas there is no evidence of ultrafast decay under thermal neutron excitation. This work contributes to the promotion of domestic development of CLYC.

关键词： Cs2LiYCl6:Ce3+ Energy resolution Pulse shape discrimination Decay time Thermal neutrons

Convergence of Bregman Peaceman–Rachford Splitting Method for Nonconvex Nonseparable Optimization

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Journal of the Operations Research Society of China 2023年第4期11卷 707-733页

作者： peng-Jie Liu jin-Bao Jian Bo He xian-Zhen Jiang College of Mathematics and Physics Guangxi Key Laboratory of Hybrid Computation and IC Design AnalysisCenter for Applied Mathematics and Artificial IntelligenceGuangxi University for NationalitiesNanning530006GuangxiChina College of Mathematics and Information Science Guangxi UniversityNanning530004GuangxiChina School of Mathematics China University of Mining and TechnologyXuzhou221116JiangsuChina

This work is about a splitting method for solving a nonconvex nonseparable optimization problem with linear constraints,where the objective function consists of two separable functions and a coupled ***,based on the ideas from Bregman distance and Peaceman–Rachford splitting method,the Bregman Peaceman–Rachford splitting method with different relaxation factors for the multiplier is ***,the global and strong convergence of the proposed algorithm are proved under general conditions including the region of the two relaxation factors as well as the crucial Kurdyka–Łojasiewicz ***,when the associated Kurdyka–Łojasiewicz property function has a special structure,the sublinear and linear convergence rates of the proposed algorithm are ***,some preliminary numerical results are shown to indicate the effectiveness of the proposed algorithm.

关键词： Nonconvex nonseparable optimization Peaceman-Rachford splitting method Bregman distance Kurdyka-Łojasiewicz inequality Convergence rate

Twelve-year outcomes after revascularization for ostial/shaft lesions in unprotected left main coronary artery

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Journal of Geriatric Cardiology 2020年第6期17卷 338-343页

作者： xian-peng YU Yu LI Ji-Qiang HE Ze-Ning jin Department of Cardiology Beijing Anzhen HospitalCapital Medical UniversityBeijingChina Department of Cardiology and Macrovascular Disease Beijing Tiantan HospitalCapital Medical UniversityBeijingChina

Objective To evaluate a very long-term clinical outcomes of patients treated with coronary artery bypass grafting(CABG) and percutaneous coronary intervention(PCI) with drug-eluting stents(DES) for ostial/shaft lesions in unprotected left main coronary artery(ULMCA). Methods & Results A total of 472 patients with isolated ostial/shaft lesions in ULMCA were enrolled, who received DES implantation or underwent CABG between January 2003 and July 2009 in Beijing Anzhen Hospital. The major endpoints of this study were death, repeat revascularization, non-procedural myocardial infarction(MI) and stroke. The median follow-up was twelve years(interquartile range: 9.4–14.0 years) in the overall patients. There were no significant differences of incidence of death(23.3% vs. 25.6%, P = 0.227), repeat revascularization(27.3% vs. 28.4%, P = 0.423), non-procedural MI(20.0% vs. 14.5%, P = 0.561), and stroke(6.1% vs. 9.3%, P = 0.255) between PCI and CABG groups before multivariate adjusting. After adjusting covariates with multivariate Cox hazard regression model, there were still no significant differences between PCI and CABG groups. Conclusions During the median follow-up of twelve years, we found that PCI with DES was as effective and safe as CABG in patients with left main ostial/shaft lesion in this observational study.

关键词： Coronary artery bypass grafting Left main ostial/shaft lesions Percutaneous coronary intervention Prognosis

Exploring the Interplay between Local Chain Structure and Stress Distribution in Polymer Networks

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Chinese Journal of Polymer Science 2024年第6期42卷 874-885页

作者： jin-Tong Xue Yang Bai Li peng xian-Bo Huang Zhao-Yan Sun School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei230026China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China National-certified Enterprise Technology Center Kingfa Science and Technology Co.Ltd.Guangzhou510663China

The mechanical behavior of polymer networks is intrinsically correlated with the local chain topology and chain *** this study,we delve into this relationship through the lens of coarse-grained molecular dynamics(CG-MD)*** aim is to illuminate the intricate interplay between local topology and stress distribution within polymer monomers,cross-linkers,and various components with distinct cross-link connections,thereby elucidating their collective impact on the mechanical properties of polymer *** mainly focus on how specific local structures contribute to the overall mechanical response of the *** particular,we employ local stress analysis to unravel the mechanics of these *** findings reveal the diverse responses of individual components,such as junctions,strands,cross-linkers between junctions,and dangling chain ends,when subjected to ***,we observe that these components exhibit varying degrees of deformation tolerance,underscoring the significance of their roles in determining the mechanical characteristics of the *** investigations highlight junctions as primary contributors to stress accumulation,and particles with higher local stress showing a stronger correlation between stress and Voronoi ***,our results indicate that both strands and cross-linkers between junctions exhibit heightened stress levels as strand lengths *** study enhances our understanding of the multifaceted factors governing the mechanical attributes of cross-linked polymer systems at the microstructural level.

关键词： Local chain structure Local stress Molecular dynamics simulation