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基于EDA的照明设备电磁兼容性(EMC)设计与测试

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中国照明电器 2024年第9期 103-105页

作者：吕隆飞刘晶周口师范学院机械与电气工程学院河南周口466001

电磁兼容性关系到产品的性能和用户安全,直接影响着产品能否顺利通过国际认证,进入全球市场。因此,本文将对EDA工具在照明设备EMC设计和测试中的应用展开深入探讨,以期为照明设备设计师和制造商提供科学、实用的参考和指导。

关键词：照明设备电磁兼容性 EDA

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基于力位感知技能学习的轴孔柔顺装配方法

图学学报 2024年第2期45卷 250-258页

作者：路龙飞王峻峰赵世闻李广丁鑫涛华中科技大学机械科学与工程学院湖北武汉430074

针对传统机器人轴孔装配方法建立精确几何接触模型难、学习方法需要样本大和初始姿态偏差大且成功率低的问题,提出了一种基于力位感知装配技能学习的机器人轴孔柔顺装配方法。在搜孔阶段均匀采集轴未入孔的力和力矩样本数据,构建力-动... 详细信息

针对传统机器人轴孔装配方法建立精确几何接触模型难、学习方法需要样本大和初始姿态偏差大且成功率低的问题,提出了一种基于力位感知装配技能学习的机器人轴孔柔顺装配方法。在搜孔阶段均匀采集轴未入孔的力和力矩样本数据,构建力-动作数据集,搭建多层感知机(MLP)和注意力模块网络进行监督学习、生成力-动作映射判别模型,根据装配过程中的六维力信号预测下一步装配动作,减小轴中心线与孔中心线的夹角和距离,完成轴孔对准操作;在插孔阶段设计了一种以位置控制为内环的柔顺控制算法,通过设置轴端面的期望接触力,在六维力传感器数据反馈的作用下以主动顺应方式实时调整轴的位置和方向。以最小间隙为0.1 mm的单轴孔为对象,设计了100组装配实验,在平均时间为15.1s内的装配成功率为94%。通过与其他装配方法比较,提高了轴孔装配的效率和成功率。

关键词：轴孔装配力位感知技能学习注意力机制阻抗控制

川东北地区二叠系大隆组深层页岩气储层孔隙结构及其分形特征

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石油实验地质 2024年第2期46卷 263-277页

作者：何陈诚赵永强俞凌杰卢龙飞刘伟新潘安阳李楚雄中国石化石油勘探开发研究院无锡石油地质研究所江苏无锡214126 中国石化油气成藏重点实验室江苏无锡214126 页岩油气富集机理与高效开发全国重点实验室江苏无锡214126 国家能源页岩油研发中心江苏无锡214126

页岩储层特性是影响页岩气富集和开采的关键因素之一。四川盆地北部发育的上二叠统大隆组是重要的海相优质烃源岩,而针对川东北地区大隆组页岩储层的研究还有待深入。以川东北地区大隆组深层页岩为研究对象,利用高分辨率场发射扫描电镜... 详细信息

页岩储层特性是影响页岩气富集和开采的关键因素之一。四川盆地北部发育的上二叠统大隆组是重要的海相优质烃源岩,而针对川东北地区大隆组页岩储层的研究还有待深入。以川东北地区大隆组深层页岩为研究对象,利用高分辨率场发射扫描电镜、二氧化碳吸附、氮吸附及高压压汞等技术,开展大隆组深层页岩储层不同孔径孔隙结构的定性—定量研究,并运用基于二氧化碳吸附的V-S模型、氮吸附的FHH模型和高压压汞的分形几何模型对不同孔径的孔隙进行分形拟合,表征页岩孔隙结构的复杂程度和非均质性特征。结果表明,川东北地区大隆组深层页岩储层发育丰富的纳米级有机孔和少量的无机孔,有机孔发育特征随有机质显微组分不同和分布形式差异而显示强的非均质性。大隆组深层页岩孔隙结构与龙马溪组深层页岩相似,以介孔和微孔为主,占总孔体积的90%以上;页岩孔隙结构主要受有机质丰度的影响。分形特征研究结果显示,深层页岩宏孔非均质性强于介孔和微孔。其原因可能为深层页岩微孔孔径较小,分布集中,成因单一,受成岩作用影响较小,孔隙结构较为简单,具有较小分形维数;而宏孔孔径较大,分布范围较广,成因多样,易受成岩作用影响,表现出强非均质性。深层页岩微孔—介孔因其丰富的储集空间和较强的自相似性,有利于页岩气的赋存、渗流和开采。

关键词：非均质性分形维数孔隙结构页岩储层大隆组二叠系川东北地区

陆相页岩层系岩心含水量现场分析技术及初步应用

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石油实验地质 2024年第2期46卷 420-427页

作者：贾梦瑶鲍云杰李志明冷筠滢刘旺威何晋译卢龙飞黎茂稳中国石化石油勘探开发研究院无锡石油地质研究所江苏无锡214126 中国石油化工集团公司油气成藏重点实验室江苏无锡214126 页岩油气富集机理与高效开发全国重点实验室江苏无锡214126 国家能源页岩油研发中心江苏无锡214126 中国石化石油勘探开发研究院北京102206

陆相页岩层系的流体分析是页岩油选层评价的重要基础。针对陆相页岩层系流体表征技术的现状和钻井现场的需求,基于岩心样品中水分易于散失的特性,探索建立了适用于井场基于微波的岩样含水快速测试方法。岩心出筒擦除表面的钻井液之后,... 详细信息

陆相页岩层系的流体分析是页岩油选层评价的重要基础。针对陆相页岩层系流体表征技术的现状和钻井现场的需求,基于岩心样品中水分易于散失的特性,探索建立了适用于井场基于微波的岩样含水快速测试方法。岩心出筒擦除表面的钻井液之后,第一时间采集具有代表性的块状岩样加载到破碎主机上破碎处理呈颗粒状,将颗粒状的样品倒入加载到微波含水测定仪的样品杯中,2 s后即可得到岩样水分的质量分数,测试绝对误差平均0.15%。初步应用研究表明:一是岩样水分检测结果可以转换为水分在样品孔隙系统中占据的孔隙空间,结合井场热解等资料快速计算样品的视孔隙度,为井场决策提供数据支撑;二是结合岩样块密度和热解数据等资料,计算岩心样品的视含油饱和度和视含水饱和度,实现井场岩样流体的快速评价。该方法的应用不需要对岩样进行洗油和烘干处理,缩短了分析周期,丰富了适用于井场的岩心孔隙度、流体分析实验技术手段和方法。

关键词：岩心含水量视含油饱和度视含水饱和度视孔隙度陆相页岩井场分析技术

陆相页岩层系岩心中气态烃井场测定技术初步应用及展望

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石油实验地质 2024年第1期46卷 183-190页

作者：贾梦瑶鲍云杰李志明申宝剑曹婷婷刘鹏杨振恒卢龙飞黎茂稳中国石化石油勘探开发研究院无锡石油地质研究所江苏无锡214126 中国石化油气成藏重点实验室江苏无锡214126 页岩油气富集机理与高效开发全国重点实验室江苏无锡214126 国家能源页岩油研发中心江苏无锡214126 中国石化石油勘探开发研究院北京102206

陆相页岩层系的流体分析是页岩油甜点评价的重要基础,针对岩心样品中气态烃易于散失的特性和页岩油钻井现场的需求,研发了井场岩心气态烃快速采集测定装置及方法,探讨了基于岩心气态烃分析和热解含油性分析资料快速计算视气油比和估算... 详细信息

陆相页岩层系的流体分析是页岩油甜点评价的重要基础,针对岩心样品中气态烃易于散失的特性和页岩油钻井现场的需求,研发了井场岩心气态烃快速采集测定装置及方法,探讨了基于岩心气态烃分析和热解含油性分析资料快速计算视气油比和估算游离油损失的方法。研究表明,该装置适用于全直径岩心和块状样品的气态烃检测,既可以实现全直径岩心在常温、常压下逸散气态烃的采集测定,也可以测定块状岩心样品的气态烃总量,气态烃检测相对误差10%,测试结果可以转换为单位质量岩样气态烃含量。全直径岩心逸散气分析可实现岩心气态烃的非破坏式采集和测定,反映了页岩层系垂向上含油气性及其非均质性的变化特征。视气油比可反映页岩层系含油气性和可流动性的趋势,视气油比越大,代表相应页岩层系页岩油可流动性越好。利用视气油比可估算岩心经历降压降温脱气过程中游离烃的损失量,在建立岩心降温降压脱气过程的热解游离烃损失恢复方法中具有较大应用潜力。岩心气态烃井场测定技术丰富了适用于井场的岩心流体分析实验技术手段和方法,为陆相页岩层系流体评价及甜点确定提供数据支撑。

关键词：气态烃含量视气油比游离油损失恢复可流动性评价页岩油气陆相页岩

An isotope study of the accumulation mechanisms of high-sulfur gas from the Sichuan Basin, southwestern China

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Science China Earth Sciences 2016年第11期59卷 2142-2154页

作者： LIU WenHui Tenger ZHANG ZhongNing luO HouYong ZHANG DianWei WANG Jie LI LiWu GAO Bo lu longfei ZHAO Heng Sinopec Petroleum Exploration & Production Research Institute Beijing 100083 China Key Laboratory of Petroleum Accumulation Mechanisms SINOPEC Wuxi 214151 China Wuxi Research Institute of Petroleum Geology Sinopec Petroleum Exploration & Production Research Institute Wuxi 214151 China Lanzhou Center for Oil and Gas Resources Institute of Geology and Geophysics Chinese Academy of Sciences Lanzhou 730000 China

The mechanism of hydrogen sulfide(H_2S) generation plays a key role in the exploration and development of marine high-sulfur natural gas, of which the major targets are the composition and isotope characteristics of sulfur-containing *** source rocks, reservoir rocks, natural gases and water-soluble gases from Sichuan Basin have been analyzed with an online method for the content of H_2S and isotopic composition of different sulfur-containing compounds. The results of comparative analysis show that the sulfur-containing compounds in the source rocks are mainly formed by bacterial sulfate reduction(BSR), and the sulfur compounds in natural gas, water and reservoir are mainly formed by thermal sulfate reduction(TSR). Moreover, it has been shown that the isotopically reversion for methane and ethane in high sulfur content gas is caused by TSR. The sulfur isotopic composition of H_2S in natural gas is inherited from the gypsum or brine of the same or adjacent layer,indicating that the generation and accumulation of H_2S have the characteristics of either a self-generated source or a near-source.

关键词： H_2S TSR Sulfur-containing natural gas Sulfur isotope Hydrocarbon accumulation mechanism Sichuan Basin

Formation, preservation and connectivity control of organic pores in shale

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Petroleum Exploration and Development 2021年第4期48卷 798-812页

作者： BORJIGIN Tenger lu longfei YU Lingjie ZHANG Wentao PAN Anyang SHEN Baojian WANG Ye YANG Yunfeng GAO Zhiwei Oil&Gas Resources Survey China Geological SurveyBeijing 100083China Wuxi Petroleum Geology Institute Sinopec Exploration&Production Research InstituteWuxi 214126China College of Geosciences China University of Petroleum(Beijing)Beijing 102249China

In view of strong heterogeneity and complex formation and evolution of organic pores,field emission scanning electron microscopy(FESEM),Raman spectrum and fluid injection+CT/SEM imaging technology were used to study the macerals,organic pores and connectivity of organic pores in the lower Paleozoic organic-rich shale samples from Southern *** with the mechanism of hydrocarbon generation and expulsion and pore forming mechanism of organic matter-based activated carbon,the relationships between organic pore development and the organic matter type,hydrocarbon generation process,diagenesis and pore pressure were explored to reveal the controlling factors of the formation,preservation and connectivity of organic pores in shale.(1)The generation of organic pores goes on through the whole hydrocarbon generation process,and is controlled by the type,maturity and decomposition of organic matter;the different hydrocarbon generation components and differential hydrocarbon-generation evolution of kerogen and solid asphalt lead to different pore development characteristics;organic pores mainly develop in solid bitumen and hydrogen-rich kerogen.(2)The preservation of organic pores is controlled by maturity and diagenesis,including the steric hindrance effect of in-situ hydrocarbon retention,rigid mineral framework formed by recrystallization,the coupling mechanism of pore-fluid pressure and shale brittleness-ductility transition.(3)The Ro of 4.0%is the maturity threshold of organic pore extinction,the shale layers with Ro larger than 3.5%have high risk for shale gas exploration,these shale layers have low gas contents,as they were in an open state before uplift,and had high hydrocarbon expulsion efficiency and strong aromatization,thus having the"congenital deficiency"of high maturity and pore densification.(4)The pores in the same organic matter particle have good connectivity;and the effective connectivity between different organic matter pores and inorganic pores an

关键词： shale gas organic matter pore maturity hydrocarbon generation process diagenesis Ordovician Wufeng Formation Silurian Longmaxi Formation

A novel high-Cr CoNi-based superalloy with superior high-temperature microstructural stability, oxidation resistance and mechanical properties

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International Journal of Minerals,Metallurgy and Materials 2024年第6期31卷 1373-1381页

作者： Xiaorui Zhang Min Zou Song lu longfei Li Xiaoli Zhuang Qiang Feng Beijing Advanced Innovation Center for Materials Genome Engineering State Key Laboratory for Advanced MetalsUniversity of Science and Technology BeijingBeijing 100083China

A novel multicomponent high-Cr CoNi-based superalloy with superior comprehensive performance was prepared,and the evaluation of its high-temperature microstructural stability,oxidation resistance,and mechanical properties was conducted mainly using its cast polycrystalline *** results disclosed that the morphology of theγ′phase remained stable,and the coarsening rate was slow during the long-term aging at 900–1000℃.The activation energy forγ′precipitate coarsening of alloy 9CoNi-Cr was(402±51)kJ/mol,which is higher compared with those of CMSX-4 and some other Ni-based and Co-based ***,there was no indica-tion of the formation of topologically close-packed phases during this *** these factors demonstrated the superior microstructural stability of the *** mass gain of alloy 9CoNi-Cr was 0.6 mg/cm^(2) after oxidation at 1000℃ for 100 h,and the oxidation resistance was comparable to advanced Ni-based superalloys CMSX-4,which can be attributed to the formation of a continuous Al_(2)O_(3) protective ***,the compressive yield strength of this cast polycrystalline alloy at high temperatures is clearly higher than that of the conventional Ni-based cast superalloy and the compressive minimum creep rate at 950℃ is comparable to that of the conventional Ni-based cast superalloy,demonstrating the alloy’s good mechanical properties at high *** is partially because high Cr is bene-ficial in improving theγandγ′phase strengths of alloy 9CoNi-Cr.

关键词： CoNi-based superalloys microstructure coarsening oxidation mechanical properties

The Original Organism Assemblages and Kerogen Carbon Isotopic Compositions of the Early Paleozoic Source Rocks in the Tarim Basin, China

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Acta Geologica Sinica(English Edition) 2018年第6期92卷 2297-2309页

作者： HU Guang MENG Qingqiang WANG Jie Tengger XIE Xiaomin lu longfei luO Houyong LIU Wenhui State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu 610500China Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Mineral Shandong University of Science and TechnologyQingdao 266590ShandongChina Petroleum Exploration and Production Research Institute SinopecBeijing100083China Wuxi Research Institute of Petroleum Geology SINOPECWuxi 214151JiangsuChina Northwest University Xi'an 710069China

Original organisms are the biological precursors of organic matter in source rocks. Original organisms in source rocks are informative for oil-source rock correlation and hydrocarbon potential evaluation, especially for source rocks which have high-over level of thermal maturity. Systematic identification of original organism assemblages of the Lower Paleozoic potential source rocks and detailed carbon isotopic composition of kerogen analyses were conducted for four outcrop sections in the Tarim basin. Results indicated that the original organism assemblages of the lower part of the Lower Cambrian were composed mainly of benthic algae, whereas those of the Upper Cambrian and the Ordovician were characterized by planktonic algae. Kerogen carbon isotopic data demonstrated that the δ13 Ckerogen values of source rocks dominated by benthic algae are lower than-34‰, whereas the δ13 Ckerogen values of source rocks dominated by planktonic algae are higher than-30‰ in general. We tentatively suggested that the carbon species those are utilized by algae and the carbon isotopic fractionation during photosynthesis are the major controls for the δ13 Ckerogen values in the Lower Paleozoic source rocks in the Tarim basin. Correlating the δ13 C values of oils exploited in the Tarim basin, the original organism assemblages, and δ13 Ckerogen values of source rocks, it implied that the Lower Paleozoic oils exploited in the Tarim basin should be sourced from the source rocks with original organism assemblages dominated by planktonic algae, and the hydrocarbon sourced from the Cambrian benthic algae should be of great exploration potential in future. Original organism assemblages in source rocks can provide important clues for oil-source rocks correlation, especially for the source rocks with high thermal maturity.

关键词： Tarim basin the Lower Paleozoic source rock original organisms kerogen carbon isotopes