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Study on forward modeling of through-casing resistivity logging

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Science china Earth Sciences 2008年第S2期51卷 207-211页

作者： GAO Jie1,LIU FuPing2,BAO DeZhou3,CHENG Xi3 & ZHANG YuLing4 1 china University of Petroleum,beijing 102249,china 2 beijing institute of graphic co.munication,beijing 102600,china 3 china Petroleum Logging co. LTD.,Xi’an 710021,china 4 china National Logging corporation,beijing 100101,china china University of Petroleum Beijing China beijing institute of graphic co.munication Beijing China china Petroleum Logging co. LTD. Xi’an China china National Logging corporation Beijing China

Through-casing resistivity logging (TCRL) is a new kind of logging method for formation evaluation,reservoir monitoring and saturation changes tracking. In this paper,the basic principle of TCRL is de-tailed,and the modified transmission line equation method (MTLEM) is first proposed in china. The MTLEM has been employed to simulate the responses of TCRL,on the basis of which,the effects of formation resistivity,cement and casing on the responses of TCRL are analyzed,and the signals in-duced in different formations are also calculated,which can help the design of TCRL tool and data processing and interpretation in china.

关键词： through-casing resistivity logging (TCRL) modified transmission line equation method (MTLEM) casing cement sheath

Acid/alkali gated photochromism of two diarylperfluorocyclopentenes

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Science china Chemistry 2007年第5期50卷 581-586页

作者： CHEN ZiHui1, ZHAO ShengMin2, LI ZhongYu1, ZHANG Zhi1 & ZHANG FuShi1 1 The Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, beijing 100084, china 2 Lab of Printing & Packing Materials and Technology-beijing Area Major Laboratory, beijing institute of graphic co.munication, beijing 100084, china The Key Lab of Organic Optoelectronics & Molecular Engineering of Ministry of Education Department of Chemistry Tsinghua University Beijing China Lab of Printing & Packing Materials and Technology-beijing Area Major Laboratory Beijing Institute of Graphic Communication Beijing China

Two novel diarylfuorocyclopentenes, which underwent gated photochromism, were synthesized. It was found that the photochromic property of these diarylethenes could be switched by alternative addition of acids/alkalis,... 详细信息

关键词： photochromism, diarylethene, gated reactivity, pyridinium betaine

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井工煤矿甲烷排放精准监测与核算

煤炭科学技术 2024年第4期52卷 119-130页

作者：解北京李晓旭张景顺栾铮李军陈伟王兹尧汤效平中国矿业大学(北京)应急管理与安全工程学院北京100083 中国矿业大学(北京)地球科学与测绘工程学院北京100083 华电电力科学研究院有限公司北京100071

甲烷作为全球第二大温室气体,具有增温潜势高、寿命短的特点,主要来源于煤炭、油气生产、农业、畜牧业和废弃物处理等领域。积极稳妥有序控制甲烷排放,兼具减缓全球温升的气候效益、能源资源化利用的经济效益、协同控制污染物的环境效... 详细信息

甲烷作为全球第二大温室气体,具有增温潜势高、寿命短的特点,主要来源于煤炭、油气生产、农业、畜牧业和废弃物处理等领域。积极稳妥有序控制甲烷排放,兼具减缓全球温升的气候效益、能源资源化利用的经济效益、协同控制污染物的环境效益和减少生产事故的安全效益。甲烷也是煤矿生产排放中最主要的温室气体,目前对煤矿甲烷的排放监测及其在煤矿三维立体空间内的浓度分布研究将成为我国甲烷排放控制行动的重点,对煤矿企业更好顺应国家战略具有重要意义。选取山西某高瓦斯矿井、陕西某低瓦斯矿井进行甲烷排放监测核算,以固定监测、手工监测、无人机监测及矿后活动监测等方式研究我国高低瓦斯矿井甲烷分布,并对其甲烷排放量开展分析。结果表明:①美国Climate TRACE网站公布的山西某高瓦斯矿井、陕西某低瓦斯矿井2022年度甲烷排放量与实测法计算的结果差异较大,其中公布的某低瓦斯矿井年度甲烷排放量为实测法计算结果的10.92倍,自上而下的监测核算方法准确性不足,无法为碳交易提供可靠的数据支持。②矿后活动监测核算发现,采用IPCC缺省值计算的矿后活动甲烷排放量是实测法计算的3~5倍,且不同粒径和暴露时间下煤样反馈的矿后活动排放量差异较大。亟需一套统一精准的测试标准,为未来碳市场交易提供公平准确的数据。

关键词：井工煤矿甲烷排放 IPCC缺省值精准监测核算排放因子

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The Calculation of The Tetraquark(Q■1q2■3)Masses

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The Calculation of The Tetraquark(Q■1q2■3)Masses

The computation of The Tetraquark(q1q2■3■4)Masses with Positive Parity

中国数学力学物理学高新技术交叉研究学会第十三届学术年会

作者： Tian Yimin beijing institute of graphic co.munication,beijing,china,102600

In Jaffe and Wilczek’ s diquark model,we perform a schematic study of the tetraquarks(Qqqq) in the flavor(3 + 6) *** Lie group way, we calculate the masses of the tetraquarks(Qqqq).

关键词： Tetraquark diquark

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The Computation of The Tetraquark(q1q2■3■4)Masses with Pos...

The Influence of Deposition Temperature on the Epitaxial Growth of La_(0.7)Ca_(0.3)MnO_3 Thin Film

中国数学力学物理学高新技术交叉研究学会第十三届学术年会

作者： Zhang Ao beijing institute of graphic co.munication,beijing,china,102600

Using the color-magnetic interaction Hamiltonian with SU(3)

关键词： Tetraquark Hamiltonian symmetry

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北京印刷学院学报 2011年第4期19卷 72-75页

作者： YANG Shao-bo,ZHANG Ao(beijing institute of graphic co.munication,beijing 102600,china)

The growth conditions of La0.7Ca0.3MnO3(LCMO) epitaxial thin film are *** results indicate that the deposition temperature plays a crucial role on the growth mode of LCMO thin *** is an optimal deposition temperature,To,for the epitaxial growth of LCMO thin *** only at the To,the real epitaxial LCMO thin film can be *** the deposition temperature deviates from the To,the thin film tends to be polycrystalline,although it orientes growth along a certain direction(a or c axis).Moreover,the experimental results show that just only for the epitaxial thin film the ferromagnetic-paramagnetic transition temperature(*** courier temperature Tc) equals to the metal-semiconductor transition temperature(Tp).The ferromagnetic state shows metallicity and the paramagnetic state exhibits semiconducting character.

关键词： epitaxial polycrystalline thin film electric and magnetic phase transition

Mourning for renowned pharmacologist Professor Geng-Tao Liu

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World Journal of Gastroenterology 2010年第20期16卷 2577-2578页

作者： Lian-Sheng Ma,beijing Baishideng BioMed Scientific co.,Ltd.,beijing 100025,china beijing Baishideng BioMed Scientific co. Ltd Ocean International Center No. 62 Dongsihuan Zhonglu Chaoyang District Beijing 100025 China

At 22:08 h on February 27,2010,Professor Geng-Tao Liu,a renowned pharmacologist affiliated with the Department of Pharmacology,institute of Materia Medica,Chi-nese Academy of Medical Sciences,beijing,an academi-cian o... 详细信息

关键词： Mourning for renowned pharmacologist Professor Geng-Tao Liu Figure

Phase relationship of complex multi-component system in chromate cleaner production

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Progress in Natural Science:Materials International 2007年第7期17卷 845-850页

作者： Ge Xinlei~1 Wang Xidong~(1,3**) Zheng Shili~2 Zhang Mei~1 Zhang Yi~2 (1.Department of Physical Chemistry,University of Science and Technology beijing,beijing 100083,china 2.institute of Process Engineering,Chinese Academy of Sciences,beijing 100080,china 3.college of Engineering,Peking University,beijing 100871,china) Department of Physical Chemistry University of Science and Technology Beijing Beijing 100083 China college of Engineering Peking University Beijing 100871 China institute of Process Engineering Chinese Academy of Sciences Beijing 100080 China

The phase relationships of the complex multi-component systems in the liquid-phase oxidization and separation process related with the chromate cleaner production are investigated theoretically and *** phase diagram of main system Fe- Cr2O4-KOH-O2of oxidization process and the relationship of its standard Gibbs free energy change with temperature are calculated.A se- ries of phase diagrams of the separation process at different temperatures,such as K（Na）OH-K（Na）2CrO4-H2O,KOH-KAlO2-H2O, K（Na）OH-K（Na）2co3-H2O,K（Na）OH-K（Na）Hco3-H2O and K（Na）Hco3-K（Na）2CrO4-H2O have also been *** ex- periments are carried out to verify the calculated *** results showed that the sub-molten salt media are suitable for the oxidization and separation processes;FeCr2O4can be oxidized across a wide range of temperature;K（Na）2CrO4can be separated from K（Na）AlO2system at appropriate temperature and proper concentration;the crystallization of carbonate is easier than that of K（Na）2CrO4.

关键词： chromite chromate system thermodynamics calculation phase diagram

RESID HYDROcoNVERSION—A NEW APPROACH IN PROCESSING INFERIOR RESIDUAL OILS

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石油学报（石油加工） 2001年第1期17卷 35-41页

作者： LI Zhi qiang, LIU Jia ming, SUN Li li (beijing Design institute, SINOPEC, beijing 100724, china) 中国石油化工公司北京设计所北京 100724 中国石油化工总公司北京设计所北京 100724

In order to meet the market demands for more premium distillates and the more stringent requirements of environment protection, china refineries should find a better way for deep processing of residues. This paper describes the necessity, overview and application of the resid hydroconversion process in china. Qilu Petrochemical co. built the first vacuum resid hydrodesulfurization (VRDS) unit with a capacity of 840 kt/a of Gudao vacuum residue in 1986. And Dalian West Pacific Petrochemical co. Ltd. built the first atmospheric resid hydrodesulfurization (ARDS) unit with the capacity of 2 Mt/a in 1992. beijing Design institute SINOPEC did the engineering design of these two units. Some modifications on the units were carried out, which gives the adaptability and flexibility in processing inferior crudes such as high sulfur crudes.

关键词：加氢裂化残油市场需求环境保护