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Pore structure evolution of lacustrine organic-rich shale from the second member of the Kongdian formation in the Cangdong Sag,Bohai Bay Basin,China

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Petroleum Science 2022年第2期19卷 459-471页

作者： Xiao-Ping Liu Ming Guan Zhi-Jun Jin Zhe Cao Jin Lai Lun-Ju Zheng Wen-Qi Li biao sun Shan-Yong Chen State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China College of Geosciences China University of Petroleum(Beijing)Beijing102249China Research Institute of Petroleum Exploration and Development China National Petroleum CorporationBeijing100083China Institute of Energy Peking UniversityBeijing100871China State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development Beijing100083China Sinopec Petroleum Exploration and Production Research Institute Beijing102206China Wuxi Petroleum Geology Institute Research Institute of Petroleum Exploration and DevelopmentSinopecWuxiJiangsu 214126China Petro China Dagang Oil Field Company Tianjin300280China

Pyrolysis experiments were conducted on lacustrine organic-rich shale from Cangdong Sag in Bohai Bay Basin,China,to investigate the impact of hydrocarbon generation on shale pore structure evolution.Thermal evolution is found to control the transformation of organic matter,hydrocarbon products characteristics,and pore structure changes.Furthermore,pore volume and specific surface area increase with increasing maturity.In low-mature stage,the retained oil content begins to increase,pore volumes show slight changes,and primary pores are occluded by the generated crude oil of high molecular weight and density.In the oil-window stage,the retained oil content rapidly increases and reaches maximum,and pore volumes gradually increase with increasing thermal maturity.At high mature stage,the retained oil content begins to decrease,and the pore volume increases considerably owing to the expulsion of liquid hydrocarbon.In over mature stage,natural gas content significantly increases and kerogen transforms to asphalt.Numerous organic pores are formed and the pore size gradually increases,resulting from the connection of organic pores caused the increasing thermal stress.This study lays a foundation for understanding variation of hydrocarbon products during the thermal evolution of lacustrine shales and its relationship with the evolution of shale reservoirs.

关键词： Lacustrine shale Pyrolysis Thermal maturity Pore structure evolution Hydrocarbon generation evolution

Lacustrine shale oiliness influenced by diabase intrusions in the Paleogene Funing Formation,Subei Basin,China

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Petroleum Science 2023年第5期20卷 2683-2694页

作者： biao sun Xiao-Ping Liu Jie Liu Qi-Dong Liu Hong-Liang Duan Shi-Li Liu Ming Guan Tian Liu Zu-Xian Hua Kai Sheng Yu-Jie Xing State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China College of Geosciences China University of Petroleum(Beijing)Beijing102249China International Petroleum Exploration and Production Corporation SINOPECBeijing100029China Research Institute of Exploration and Development SINOPEC Jiangsu Oilfield CompanyJiangsu225009China

The research on the correlation between hydrocarbon accumulations and magmatic activities has always attracted aroused much wide attention.Existing research has primarily the hydrocarbon generations capability of source rocks and the quality of reservoirs by diabase intrusions.whereas,rare systematic research has been conducted on the oiliness and enrichment mechanism.To be specific,the diabase intrusive zone,the contact metamorphic zone and the normal shale zone of the Funing Formation in the Gaoyou Sag,Subei Basin were taken as the object of this study.Moreover,in this study,the hydrocarbon generation quality,reservoir quality,and oil-bearing quality of diabase-metamorphic zone-normal shale were evaluated using X-ray diffractions,argon ion polishing-field emission scanning electron microscope,energy spectrum,rock slice/light-sheet microscopic observations,organic geochemical tests,N_(2) gas adsorption and 2D NMR tests.The results indicated that the intrusive zone,the metamorphic zone,and the normal zone were formed in order by the degree of effect of diabase intrusions.Secondly,the oil content of different parts exhibited significant heterogeneity due to the baking effect of diabase,and the metamorphic zone had the significantly better oil-bearing nature than the intrusive zone.Lastly,a distribution model was proposed for the diabase intrusive zone-metamorphic zone-normal surrounding rock zone.

关键词： Shale reservoirs Diabase intrusion Oiliness Funing formation

Multigigawatt 50 fs Yb:CALGO regenerative amplifier system with 11 W average power and mid-infrared generation

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Photonics Research 2021年第8期9卷 1439-1445页

作者： WEIZHE WANG HAN WU CHENG LIU biao sun HOUKUN LIANG College of Electronics and Information Engineering Sichuan UniversityChengdu 610064China Beijing Wave Quanta Technology Co. Ltd.Beijing 102208China Hangzhou Yacto Technology Ltd. Hangzhou 311305China

Lasers with high average and high peak power as well as ultrashort pulse width have been all along demanded by nonlinear optics studies,strong-field experiments,electron dynamics investigations,and ultrafast spectroscopy.While the routinely used titanium-doped sapphire(Ti:sapphire)laser faces a bottleneck in the average power upscaling,ytterbium(Yb)-doped lasers have remarkable advantages in achieving high average power.However,there is still a substantial gap of pulse width and peak power between the Ti:sapphire and Yb-doped lasers.Here we demonstrate a high-power Yb:CaAlGdO4(Yb:CALGO)regenerative amplifier system,delivering 1040 nm pulses with11 W average power,50 fs pulse width,and 3.7 GW peak power at a repetition rate of 43 k Hz,which to some extent bridges the gap between the Ti:sapphire and Yb lasers.An ultrabroadband Yb-doped fiber oscillator,specially designed spectral shapers,and Yb:CALGO gain medium with broad emission bandwidth,together with a double-end pumping scheme enable an amplified bandwidth of 19 nm and 95 fs output pulse width.To the best of our knowledge,this is the first demonstration of sub-100 fs regenerative amplifier based on Yb-doped bulk medium without nonlinear spectral broadening.The amplified pulse is further compressed to 50 fs via cascaded-quadratic compression with a simple setup,producing 3.7 GW peak power,which boosts the record of peak power from Yb:CALGO regenerative amplifiers by 1 order.As a proof of concept,pumped by the high-power,50 fs pulses,7.5–11.5μm midinfrared(MIR)generation via intrapulse difference-frequency generation is performed,without the necessity of nonlinear fiber compressors.It leads to a simple and robust apparatus,and it would find good usefulness in MIR spectroscopic applications.

关键词： amplifier power pumped

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车站防暴恐单向自动通行装置的设计

铁道运营技术 2024年第2期30卷 20-22页

作者：孙彪中国铁路呼和浩特局集团有限公司科研所内蒙古呼和浩特010030

目前,大多数火车站候车厅出口仍在使用不锈钢旋转梳状单向门,此类单向门存在梳齿间隙大,无法阻止违禁物品传递等问题。针对该问题,设计单向通行的旋转门体,采用电动旋转机构,具有防夹感应和人物识别自动旋转功能,可杜绝人员逆向进入或... 详细信息

目前,大多数火车站候车厅出口仍在使用不锈钢旋转梳状单向门,此类单向门存在梳齿间隙大,无法阻止违禁物品传递等问题。针对该问题,设计单向通行的旋转门体,采用电动旋转机构,具有防夹感应和人物识别自动旋转功能,可杜绝人员逆向进入或将违禁物品向内传递,满足车站防暴恐安全管理要求,同时隔绝室内外空气流通,降低了厅内空调使用成本。

关键词：单向通行防暴恐自动通行火车站

Compact pulsed thulium‐doped fiber laser for topographical patterning of hydrogels

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Opto-Electronic Advances 2020年第6期3卷 9-17,I0001页

作者： Elizabeth Lee biao sun Jiaqi Luo Satnam Singh Deepak Choudhury Derrick Yong Xia Yu Qijie Wang Singapore Institute of Manufacturing Technology 2 Fusionopolis WayInnovis138634 Singapore School of Electrical&Electronic Engineering Nanyang Technological University50 Nanyang Avenue639798 Singapore Currently with School of Instrumentation and Optoelectronic Engineering Beihang University37 Xueyuan RoadBeijing 100083China

We report the generation of high energy 2μm picosecond pulses from a thulium-doped fiber master oscillator power amplifier system.The all-fiber configuration was realized by a flexible large-mode area photonic crystal fiber(LMA-PCF).The amplifier output is a linearly-polarized 1.5 ns,100 kHz pulse train with a pulse energy of up to 250μJ.Pulse compression was achieved with(2+2)-pass chirped volume Bragg grating(CVBG)to obtain a 2.8 ps pulse width with a total pulse energy of 46μJ.The overall system compactness was enabled by the all-fiber amplifier design and the multi-pass CVBG-based compressor.The laser output was then used to demonstrate high-speed direct-writing capability on a temperature-sensitive biomaterial to change its topography(i.***.fabricate microchannels,foams and pores).The topographical modifications of biomaterials are known to influence cell behavior and fate which is potentially useful in many cell and tissue engineering applications.

关键词： Tm-doped fiber lasers chirped pulse amplification photonic crystal fiber

SPC and Kalman filter-based fault detection and diagnosis for an air-cooled chiller

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Frontiers of Electrical and Electronic Engineering in China 2011年第3期6卷 412-423页

作者： biao sun Peter B.LUH Zheng O’NEILL Center for Intelligent and Networked Systems Department of AutomationTsinghua UniversityBeijing 100084China The Tsinghua-UTC Research Institute for Integrated Building Energy Safety and Control SystemTsinghua UniversityBeijing 100084China Department of Electrical and Computer Engineering University of ConnecticutStorrsCT 06269USA United Technology Research Center United Technologies CorporationHartfordCT 06108USA

Buildings worldwide account for nearly 40%of global energy consumption.The biggest energy consumer in buildings is the heating,ventilation and air conditioning(HVAC)systems.In HVAC systems,chillers account for a major portion of the energy consumption.Maintaining chillers in good conditions through early fault detection and diagnosis is thus a critical issue.In this paper,the fault detection and diagnosis for an air-cooled chiller with air coming from outside in variable flow rates is studied.The problem is difficult since the air-cooled chiller is operating under major uncertainties including the cooling load,and the air temperature and flow rate.A potential method to overcome the difficulty caused by the uncertainties is to perform fault detection and diagnosis based on a gray-box model with parameters regarded as constants.The method is developed and verified by us in another paper for a water-cooled chiller with the uncertainty of cooling load.The verification used a Kalman filter to predict parameters of a gray-box model and statistical process control(SPC)for measuring and analyzing their variations for fault detection and diagnosis.The gray-box model in the method,however,requires that the air temperature and flow rate be nearly constant.By introducing two new parameters and deleting data points with low air flow rate,the requirement can be satisfied and the method can then be applicable for an air-cooled chiller.The simulation results show that the method with the revised model and some data points dropped improved the fault detection and diagnosis(FDD)performance greatly.It can detect both sudden and gradual air-cooled chiller capacity degradation and sensor faults as well as their recoveries.

关键词： air-cooled chiller fault detection and diagnosis(FDD) statistical process control(SPC) Kalman filter

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硫醇甲基锡光照变色现象的研究

塑料工业 2024年第4期52卷 123-129页

作者：孙彪杨士玉李青陈树何云飞云南锡业集团(控股)有限责任公司研发中心云南昆明650106 云南锡业锡化工材料有限责任公司云南昆明661000 昆明理工大学化学工程学院云南昆明650093

硫醇甲基锡(简称甲基锡)是塑料加工过程被广泛使用的热稳定剂,在运输和使用过程中受到阳光的照射会发生变色现象。采用氙灯模拟太阳光对甲基锡进行光照变色研究,发现波长280~400 nm的紫外光照射会导致甲基锡变色,氧气的存在可以有效的... 详细信息

硫醇甲基锡(简称甲基锡)是塑料加工过程被广泛使用的热稳定剂,在运输和使用过程中受到阳光的照射会发生变色现象。采用氙灯模拟太阳光对甲基锡进行光照变色研究,发现波长280~400 nm的紫外光照射会导致甲基锡变色,氧气的存在可以有效的抑制甲基锡变色,酸值对发生变色的快慢及程度有明显的影响。甲基锡变色后新生成了醋酸-2-乙基己脂,用石油醚多次溶洗分离得到褐色粉末状的变色物质,经分析表征,其主要成分为硫化亚锡(SnS)、硫化锡(SnS_(2))以及吸附的硫醇锡。推测了甲基锡的光照变色机理,可为解释甲基锡光照变色现象及抑制变色发生提供参考。

关键词：硫醇甲基锡热稳定剂变色机理氙灯光源

新工科背景下安全工程专业实验教学改革与实践

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实验室科学 2024年第2期27卷 218-221,226页

作者：陈静刘音孙彪王相山东科技大学安全与环境工程学院山东青岛266590 山东科技大学矿业工程国家级实验教学示范中心山东青岛266590

依托安全工程专业开展实验教学改革,构建并全面实施了“三阶段、三层面、三目标”即“三三三”实验教学模式,从“课前、课中、课后”三个教学阶段,围绕“实验内容重塑、教学设计创新、育才目标达成”三个教学层面,实现“科教相长、虚实... 详细信息

依托安全工程专业开展实验教学改革,构建并全面实施了“三阶段、三层面、三目标”即“三三三”实验教学模式,从“课前、课中、课后”三个教学阶段,围绕“实验内容重塑、教学设计创新、育才目标达成”三个教学层面,实现“科教相长、虚实结合、思学创并重”三个教学目标,并以“矿井通风与安全”课程实验改革为例进行具体说明。实施成果充分体现了该模式的改革成效显著,既极大改善了实验教学弱化的不良局面,也为新时代工科专业实验教学积累了经验。

关键词：新工科安全工程实验教学改革

乡土草草地建植对辽西北连作农田土壤的改良效果研究

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草地学报 2024年第5期32卷 1572-1582页

作者：丁子健刘文李天泽白龙孙彪秦嗣军李佳欢沈阳农业大学园艺学院辽宁沈阳110866 阜新市彰武县草原生态恢复示范区管委会辽宁阜新123299

长期的耕作导致了辽西北农田土壤的严重退化。本研究以辽西北连作农田为研究对象,通过分析实验组与周边自然生境土壤理化性质和微生物群落结构差异,探讨乡土草种植对连作农田土壤的改良效果。结果表明:野古草(Arundinella anomala)草地... 详细信息

长期的耕作导致了辽西北农田土壤的严重退化。本研究以辽西北连作农田为研究对象,通过分析实验组与周边自然生境土壤理化性质和微生物群落结构差异,探讨乡土草种植对连作农田土壤的改良效果。结果表明:野古草(Arundinella anomala)草地和鹅观草(Elymus kamoji)草地的土壤pH值显著高于农田和撂荒地,养分含量显著低于农田。披碱草(Elymus dahuricus)草地和野古草草地土壤细菌的观测物种数与Chao1指数显著低于农田。土壤细菌α多样性与土壤硝态氮含量呈显著正相关关系,真菌α多样性与土壤硝态氮含量和全磷含量呈显著正相关关系。野古草、鹅观草和披碱草草地土壤细菌根瘤菌目和弗兰克氏菌目的相对丰度高于农田,芽单胞菌目的相对丰度低于农田,真菌寡囊盘菌目相对丰度高于农田和撂荒地。综上,乡土草草地建植可缓解农田土壤酸化,改善微生物群落结构,促进土壤的可持续发展。

关键词：辽西北乡土草土壤理化性质土壤细菌土壤真菌

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