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Study of the gas sources of the Ordovician gas reservoir in the Central-Eastern Ordos Basin

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Petroleum Science 2022年第3期19卷 949-962页

作者： ji-jun li Zi-Wei Song Chun-lin Zhang Shuang-Fang Lu Mei-jun Dong Shu-Ning Zhang jun jiang Key Laboratory of Deep Oil and Gas China University of Petroleum(East China)QingdaoShandong266580China PetroChina Research Institute of Petroleum Exploration and Development Beijing100083China

The source of the natural gas in the Lower Paleozoic Ordovician strata in the Ordos Basin,China is a controversial *** the present study,the genesis and distribution characteristics of the Ordovician natural gas were qualitatively investigated based on the composition of the natural gas and the hydrocarbon isotopic ***,the kinetics of the carbon isotope were analyzed to determine the proportions of the gas in the Ordovician gas reservoir contributed from the Carboniferous-Permian and Ordovician *** results show the *** to the Upper Paleozoic natural gas,the Ordovician natural gas has a large dryness *** core areas where gypsum-salt rocks are developed,the gypsum-salt rocks completely isolate the gas *** weathering crust of the reservoir in the fifth member of the Majiagou Formation(Ma_(5)^(1+2))originates primarily from the Upper Paleozoic coal-measure source rocks,while the Ma_(5)^(5)and the pre-salt natural gas are mainly derived from the Ordovician source *** the areas where the gypsum-salt rocks are relatively well-developed,the gypsum-salt rocks isolate the gas source to some extent,the pre-salt gas reservoir is mainly derived from the Lower Paleozoic source rocks,and this contribution gradually increases with increasing *** the areas where the gypsum-salt rocks are not developed,the proportion of the contribution of the Upper and Lower Paleozoic source rocks to the gas source of the Ordovician gas reservoir is mainly controlled by the volume of gas generated and the other accumulation conditions,and it does not reflect the isolation effect of the gypsum-salt rocks on the gas *** Ordovician natural gas accumulation models in the central-eastern Ordos Basin can be divided into four types according to the differences in the gas sources.

关键词： Ordos Basin Majiagou Formation Carbon isotope kinetics Gypsum layer Gas source

Carbon and oxygen isotopic constraints on paleoclimate and paleoelevation of the southwestern Qaidam basin, northern Tibetan Plateau

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Geoscience Frontiers 2017年第5期8卷 1175-1186页

作者： lin-lin li Chao-Dong Wu Chang-Fu Fan ji-jun li Chang-Hao Zhang Key Laboratory of Crustal Dynamics Institute of Crustal DynamicsChina Earthquake AdministrationBeijing 100085China Key Laboratory of Orogenic Belts and Crustal Evolution Ministry of EducationSchool of Earth and Space SciencesPeking UniversityBeijing 100871China Institute of Oil&Gas Peking UniversityBeijing 100871China MLR Key Laboratory of Metallogeny and Mineral Resource Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China No.1 Oil Producing Plant of PetroChina Qinghai Oilfield Company Dunhuang 736202China Exploration Department PetroChina Qinghai Oilfield CompanyDunhuang 736202China

We investigate the growth of the northern Tibetan Plateau and associated climate change by applying oxygen and carbon isotopic compositions in Cenozoic strata in the southwestern Qaidam basin. The X-ray diffraction and isotopic studies reveal that the carbonate minerals are mainly authigenic and they do not preserve any evidence for detrital carbonate and diagenesis. The isotope data show large fluctuations in the δ^(18)O and δ^(13)C values in the middle-late Eocene, indicating relatively warm and seasonal dry *** positive correlation of the δ^(18)O and δ^(13)C values in the Oligocene and the positive shift of the δ^(13)C values from the Eocene to Oligocene suggest that the climate changed to arid in the Oligocene. However,the δ^(18) values show negative shift, which is closely related to the global cooling event. During the Miocene, the δ^(13)C values vary between-2‰ and-4‰, whereas the δ^(18)O values show continuous negative shift. The mean δ^(18) values decrease from-8.5‰, in the early Miocene to-10.0‰, in the late Miocene. The stable isotope-based paleoaltimetry results suggest that the elevation of the southwestern Qaidam basin was approximately 1500 m in the middle-late Eocene and Oligocene. Subsequently, during Miocene the crustal uplift process started and the elevation reached approximately 2000 m in the early Miocene and 2500 m in the late Miocene, which suggests large-scale growth of the northern Tibet Plateau during the Miocene.

关键词： Carbon and oxygen isotopes Northern Tibetan Plateau Qaidam basin Paleoelevation

Synthesis,Structure and Elastic Properties of a New Hybrid Perovskite Material:[C6H14N2]KBr3

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Chinese Journal of Structural Chemistry 2020年第1期39卷 174-181,6页

作者： Muhammad Azeem ZHANG Hong ji li-jun DONG li-Yuan LU Pei-Xiang li Wei School of Physics and Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Hubei Key Laboratory of Optical Information and Pattern Recognition Wuhan Institute of TechnologyWuhan 430205China School of Materials Science and Engineering Nankai UniversityTianjin 300350China

A new hybrid organic-inorganic perovskite(HOIP)material,[C6H14N2]KBr3,has been synthesized via hydrothermal method and fully characterized.[C6H14N2]KBr3 has a three-dimensional perovskite structure and crystalizes in a trigonal P3121 space *** elastic properties of[C6H14N2]KBr3 were fully calculated via the density functional theory calculations,which reveal the elastic moduli(11.54~14.07 GPa),shear moduli(4.56~5.68 GPa),Poisson’s ratios(0.18~0.32),bulk modulus(8.51 GPa)and acoustic velocity(2.57~2.74 kms^-1).Additional nanoindentation experiments in the form of single-crystals confirmed the validity of our theoretical approach.[C6H14N2]KBr3 exhibits higher stiffness and thermal stability than the well-known photovoltaic CH3NH3PbI3,which makes it worthwhile for exploring optoelectronic properties.

关键词： hybrid perovskite density functional theory elastic properties acoustic velocity nanoindentation

Degradation of microcystin-RR in water by chlorine dioxide

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Journal of China University of Mining and Technology 2008年第4期18卷 623-628页

作者： ji Ying HUANG jun-li FU jiao WU Ming-song CUI Chong-wei School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin Heilongjiang 150090 China

Due to the potent hepatotoxicity and tumor-promoting activity of microcystins, a successful removal of these toxins during drinking water treatment processes is of increasing concem. The oxidation kinetics of MC-RR by chlorine dioxide （ClO2） was studied with HPLC and characterization of the reaction products was performed with UV-spectrometry, TOC and LC-MS. Our experimental results show that the oxidation process is a second order overall and a first order with respect to ClO2 and MC-RR. The activation energy of MC-RR degradation by ClO2 is 53.07 kJ/mol. The rate constant k of the action can be increased by increasing temperature and decreasing pH value and ranged from 6.11 × 10^2 L/（***） to 5.29× 10^2 L/（mol-min） at pH from 3.44 to 10.41 at 10℃. Reaction products were determined to be organic and volatile, because they could be almost removed from aqueous solution by heating for 15 min at 60 ~C. In addition, the main oxidation products have m/z values of 1072 and are identified as dihydroxy isomers of MC-RR.

关键词： microcystin-RR ClO2 reaction kinetics UV-spectrometry TOC LC-MS

Diels-Alder Addition of Dicyclopentadiene with Cyclopentadiene in Polar Solvents

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Chemical Research in Chinese Universities 2008年第2期24卷 175-179页

作者： ZHANG Xiang-wen jiANG Qiang XIONG Zhong-qiang ZOU ji-jun WANG li MI Zhen-tao Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and Technology Tianjin University Tianjin 300072 P. R. China

Diels-Alder addition of dicyclopentadiene and cyclopentadiene in polar solvents has been studied to produce tricyclopentadiene（TCPD） that is a potential high-density fuel precursor. GC and MS analysis shows that the adducts contain two isomers, namely exo- and endo-TCPD. Theoretical simulation shows that although the transition state of endo-TCPD has a lower activation energy, exo-TCPD is thermodynamically preferred. Polar solvents can accelerate the reaction rate and improve the exo/endo ratio of TCPD because the transition state of exo-TCPD has a higher polarity than that of endo-TCPD. The solvent effect follows the order of polarity： benzyl methanol〉cyclohexanone〉toluene. The conversion rises when the temperature ranges from 120 to 150 ℃, but the selectivity of TCPD slightly decreases. Increasing the pressure can improve the conversion but the exo/endo ratio of TCPD is unchanged. The apparent kinetics in different solvents was determined via nonlinear regression. The activation energies are 99.47, 101.15, and 107.32 kJ/mol for benzyl methanol, cyclohexanone, and toluene, respectively. The optimal reaction conditions are as follows： benzyl methanol as solvent, temperature 150 ℃, and pressure 900 kPa. After an 11-hour reaction, a conversion of 58.0%, a TCPD selectivity of 95.7%, and an exo/endo ratio of 1/5.3 has been obtained.

关键词： High density fuel Dicyclopentadiene Cyclopentadiene Diels-Alder addition Solvent effect

Kinetics and fractionation of hydrogen isotopes during gas formation from representative functional groups

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Petroleum Science 2021年第4期18卷 1021-1032页

作者： Shuang-Fang Lu Guo-Qi Feng Ming-li Shao ji-jun li Hai-Tao Xue Min Wang Fang-Wen Chen Wen-Biao li Xiao-Ting Pang aResearch Institute of Unconventional Oil&Gas and New Energy China University of PetroleumQingdaoShandong 266580China Exploitation and Development Research Institude of jilin Oilfield Company CNPCSongyuanJilin138000China

A gold tube simulation device was used to study the cleavage of representative compounds into *** goal of this study is to investigate hydrogen isotope composition change of gaseous hydrocarbons during *** chromatography and isotopic analyses were conducted to determine how the yield of natural gas components and their hydrogen isotopic composition were related to experimental temperature and heating rate.A chemical kinetic model for the generation of each component of the natural gas and for the hydrogen isotopic fractionation was established and calibrated based on the *** indicate that the hydrogen isotopic fractionation during the evolution of various gas-forming organic materials can be satisfactorily described by chemical kinetic *** regular methane generation,the reactions at low-activation-energy region had a greater contribution than the high-activation-energy *** the reactions with high-activation-energy region had greater contribution of deuterium-rich *** with carbon isotope fractionation,this results in a greater hydrogen isotopic fractionation,which is more sensitive to changes in *** study lays a foundation for further investigations of genesis and maturity of natural gas provided by hydrogen isotopic *** also provides fundamental knowledge for investigating the filling history of natural gas reservoir and for identifying.

关键词： Gas-forming compounds Pyrolysis Hydrogen isotopes Fractionation Chemical kinetics

Impact of transgenic Bacillus thuringiensis cotton on a non-target pest Tetranychus spp. in northern China

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Insect Science 2006年第4期13卷 279-286页

作者： XIAO-MU MA XIAO-XIA liU QING-WEN ZHANG ji-jun li AI-MIN REN College of Agronomy and Biotechnology China Agricultural University Beijing Handan Academy of Agriculture Science Handan Hebei China

Field studies were carried out to evaluate the effect of two transgenic cotton varieties （SGK321 carrying CryIA ＋ CpTI and DP99B carrying CryIAc） and the conventional variety （shiyuan321-parental line of SGK321） on spider mites, Tetranychus spp. from 2002 to 2004. In 2002, this experiment included three treatments： Bt cotton field （SGK321） treated with acaricides against spider mites, untreated non-Bt cotton field （Shiyuan321）, and untreated Bt cotton field （SGK321）. In 2003-2004, there are four types of treatments after a new transgenic Bt cotton variety, DP99B （non-chemical control）, was added into the experiments. The results showed that there were no significant difference in densities of spider mites among Bt without acaricides and non-Bt without acaricides cotton fields, nor was there a significant difference in damage of spider mites to cotton among these treatments （P 〉 0.1）. However, there are significant differences （P 〈 0.05） in densities of spider mites and damage caused by spider mites between cotton fields with and without acaricides. Acaricide significantly reduced the densities of spider mites in Bt cotton （P 〈 0.05）. These results suggest that Bt cotton has no effect on spider mites populations. However, spider mites have the potential for severe damage in Bt cotton fields. Acaricides are essential tools in controlling cotton spider mites in northern China.

关键词： acaricide Bt cotton non-target Tetranychus spp.

多壁碳纳米管-炭复合泡沫材料的制备和吸附性能

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无机化学学报 2007年第12期23卷 2007-2012页

作者：纪立军叶超梁吉先进成形制造教育部重点实验室清华大学机械工程系北京100084

通过在聚氨酯泡沫模板中沉积多壁碳纳米管,用炭的预制体酚醛树酯将碳纳米管粘接固定在一起,经过高温碳化过程制备了碳纳米管-炭复合泡沫材料。红外光谱结果表明利用浓硫酸和浓硝酸的混合溶液处理可以使复合泡沫表面活化形成羧基和羟基,... 详细信息

通过在聚氨酯泡沫模板中沉积多壁碳纳米管,用炭的预制体酚醛树酯将碳纳米管粘接固定在一起,经过高温碳化过程制备了碳纳米管-炭复合泡沫材料。红外光谱结果表明利用浓硫酸和浓硝酸的混合溶液处理可以使复合泡沫表面活化形成羧基和羟基,从而使复合泡沫具备较强的分子吸附能力。扫描电镜和氮吸附实验表明这种复合泡沫同时具备大孔和介孔,大孔能够满足流体自由流动的通畅性,介孔可以满足中分子的吸附需要。对标定物维生素B12的吸附实验证明这种复合泡沫对中分子量的生化分子具有有效的吸附能力。这种宏观尺寸的泡沫材料与传统的颗粒状活性炭相比具有简化工艺,提高吸附效率的应用潜力。

关键词：复合材料泡沫碳纳米管吸附 VB12

Immediate Surgical Intervention for Penile Fracture: a Case Report and literature Review

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Chinese Medical Sciences Journal 2011年第2期26卷 132-134页

作者： jin Wen Han-zhong li Zhi-gang ji Hong-jun li Department of Urology Peking Union Medical College Hospital Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730 China

PENILE fracture is a critical urological emergency, which is caused by the rupture of the tunica albuginea of the corpus cavernosum following blunt trauma to the erect penis. Traumatic injuries of the penis often occur in the erected state.1 Due to the possible embarrassment, this condition has been under- reported. Typically, the patient reports a snap or cracking sound accompanied by sharp pain and rapid penile detu- mescence, followed by immediate development of swelling and angulation.2 The common causes include direct injuries, forceful masturbation, or vigorous sexual intercourse.3 Most injuries to the penis need immediate surgical treatment. Here we report a case of penile fracture caused by traumatic injury.

关键词： penile fracture surgical intervention