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Acta Geochimica 2023年第1期42卷 50-62页

作者： Qian Deng Guanyu Zhao Haozhe Wang Bin Cheng zewen liao State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China CAS Center for Excellence in Deep Earth Science Guangzhou 510640China University of Chinese Academy of Sciences Beijing 100049China

Some trace elements(TEs),both bio-essential and redox-sensitive,are promising tracers of Earth’s surface processes.As an essential sedimentary organic matter,kerogen may have inherited and retained the key TEs from organisms.In this study,the distribution of TEs in kerogens from two sections(Dongkanshang and Fengtan) in South China was analyzed to explore its biogeochemical significance during Ediacaran-Lower Cambrian.Compared with V and Zn,the relative concentrations of Co,Ni,Cu,and Mo were generally higher in kerogens than in the whole rocks.Enrichment of TEs in the kerogen was involved in the selective utilization of TEs by different organic precursors and the competition of sulfide in the depositional environment.The significant content of TEs in the kerogens from deep-water facies corresponded to a more negative δ^(13) Ckeras a result of the dominant taxa of chemo autotrophs with tremendous bioaccumulation potential for trace metals and the reduction conditions favorable for organic matter preservation.Furthermore,the content variations of trace elements in the kerogens coincided with the rise and fall of the Ediacaran biota,implying that the trace elements might have played an important role in early life evolution.

关键词： Trace elements Kerogen Ediacaran-Early Cambrian Biogeochemical significance South China

Asphaltenes in oil reservior recovery

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Chinese Science Bulletin 2000年第8期45卷 682-688页

作者： zewen liao Ansong Geng Chinese Acad Sci Guangzhou Inst Geochem State Key Lab Organ Geochem Canton 510640 Peoples R China

Asphaltene is one of the important compositions in oil reservoirs, while it is also a major factor that causes difficulties in oil recovery and oil post-processings. Up to date, study on asphaltenes in oil recovery is stili a bottleneck problem, in this paper, the advances of studies on asphaltenes are reviewed, and some directions for further studying are suggested. What is reviewed in the paper includes the precipitation studies of asphaltenes, the degradation studies of asphaltenes and the applications of asphaltene’s studying in oil recovery; furthermore, it is regarded as a promising direction to study the possible applications of asphaltene’s selectively decomposing by chemical reagents in oil recovery.

关键词： asphaltenes precipitation oil recovery chemical degradation.

Comprehensive diag”nostic review of the (13)~C-enriched crude oils exemplified by TD2∈ and TZ62S in Tarim Basin, NW China

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Chinese Journal Of Geochemistry 2015年第1期34卷 62-68页

作者： Hu Liu zewen liao Haizu Zhang Yankuan Tian Bin Cheng Xiaohong Chang State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences University of Chinese Academy of Sciences Research Institute of Petroleum Exploration & Development Petro China Tarim Oilfield Company

The crude oils typically from the CambrianLower Ordovician source rocks of Tarim Basin, NW"China, such as TD2 and TZ62S, are13C-enriched with the stable carbon isotopic ratios(VPDB) approaching-28 %.In this paper, the main research viewpoints on this issue are summarized, and combined with results from organic and inorganic carbon isotope stratum curves of the outcrop at the Ya'erdang Mountain in Tarim Basin. In addition, more alternative interpretations are discussed. On one hand, the inverse fractionation features of stable carbon and hydrogen isotopes of these crude oils may imply their protogenous nature. On the other hand, the anisotropy of source rocks and contribution from older stratum source rocks need verifying as well. For the sake of the final resolution of this issue, some further study topics are recommended.

关键词：塔里木盆地综合诊断原油中国富集碳同位素比值同位素地层审查

Stable isotope(δ^(13)C_(ker),δ^(13)C_(carb),δ^(18)O_(carb)) distribution along a Cambrian outcrop section in the eastern Tarim Basin,NW China and its geochemical significance

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Geoscience Frontiers 2017年第1期8卷 163-170页

作者： Hu Liu zewen liao Haizu Zhang Yankuan Tian Bin Cheng Shan Yang State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China Sichuan Key Laboratory of Shale Gas Evaluation and Exploitation Chengdu 610091China Research Institute of Petroleum Exploration and Development PetroChina Yarim Oilfield CompanyKorla 841000XinjiangChina

This study investigated the geochemical features of the lower Paleozoic strata of Yaerdang Mountain outcrop along with the core samples from well TD2∈ in the eastern Tarim Basin,NW China.The total organic carbon abundance,hydrocarbon-generating precursor biospecies,and stable isotope ratios of organics and carbonate（δ13Cker,δ13Ccarb and δ18Ocarb） were comprehensively studied for their possible correlative constraints during sedimentary evolution.The results revealed that the δ13Cker（VPDB） of Cambrian kerogens along the outcrop section varied from-34.6‰ to-28.4‰,indicating an increasing tendency from the lower Cambrian to the upper Cambrian.This was on the whole accompanied by the variation in the δ13Ccarb and δ18Ocarb along the profile,which might be associated with the changes in the sea level and also in the compositional variation of benthic and planktonic biomass.The large variation in the stable carbon isotope ratios up to 6‰ along the outcrop section reflected the heterogeneity of the Cambrian source rocks from the eastern Tarim Basin.Hence,the 13C-enriched crude oils from well TD2∈might have been derived from a localized stratum of Cambrian source rocks.The results from this study showed the possibility of multiple source kitchens in the Cambrian-lower Ordovician portion of Tarim Basin.

关键词： Kerogen Heterogeneity Tarim Basin Stable isotope geochemistry

Data modelling for crude oil migration studies using ranking method: a rapid geo-tracer technique for geochemists

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Acta Geochimica 2018年第6期37卷 901-910页

作者： Oluwabamise L.Faboya Oluwadayo O.Sonibare Olusola T.Faboya Utkarsh Agrawal zewen liao O.Ekundayo Department of Chemical Sciences Afe Babalola University Department of Chemistry University of Ibadan School of Computer Science University of Nottingham State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences

The direction of oil charges within a field in the Niger Delta, Nigeria was determined by the sum of differences ranking method of carbazole concentrations after ascertaining other possible geological constraints on their compositional variations. The principle is that the smaller the sum, the closer the well to the source kitchen. The approach makes use of carbazoles' interaction with the matrix, which leads to a reduction in their concentration with increasing distance from the source kitchen, allowing prediction of the charging direction. A wide range of compositional variations was observed for C1(806.72–2152.90 lg/g) and C2(767–2469.72 lg/g) carbazoles within the field. Based on these results, we inferred a filling pathway orientation from west to east. This suggests that the source kitchen—the most promising region for oil exploration—is located in the western part of the oil field.

关键词： Carbazoles isomers Crude oils Charging direction Data modelling

富含木质素生物质中甲氧基的有机地球化学演化特征研究进展

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地球化学 2024年第3期53卷 409-416页

作者：黄敏王浩哲赵冠宇廖泽文中国科学院广州地球化学研究所有机地球化学国家重点实验室广东广州510640 中国科学院大学北京100049 自然资源部中国地质调查局广州海洋地质调查局广东广州511458

木质素是组成树木、泥炭和低熟煤等生物质的重要结构单元,它的单体和聚合物结构中含有丰富的甲氧基(–OCH_(3)),其含量最初随着生物质腐殖化过程中木质素与纤维素比值的增加而增加,然后在成岩过程中快速下降,在此过程中甲氧基含量及其稳... 详细信息

木质素是组成树木、泥炭和低熟煤等生物质的重要结构单元,它的单体和聚合物结构中含有丰富的甲氧基(–OCH_(3)),其含量最初随着生物质腐殖化过程中木质素与纤维素比值的增加而增加,然后在成岩过程中快速下降,在此过程中甲氧基含量及其稳定C、H同位素(δ^(13)C、δ^(2)H)演化特征具有重要的有机地球化学意义。本文综述了富含木质素生物质中甲氧基的研究进展,包括甲氧基定量评价方法,甲氧基δ2H在古气候、古环境方面(如大气降水、温度、海拔等)的应用,甲氧基含量及δ13C在甲烷资源(如煤层气)评价方面的应用等,指出建立外标定量曲线是生物质中甲氧基定量评价的有效方法,同时强调了在样品处理、实验分析过程中针对不同研究对象的注意要点。生物质进入沉积体系后甲氧基演化特征及其有机地球化学信息,如甲氧基演化对沉积地层中甲烷聚集的资源效应,以及生物质沉积演化过程中伴随甲烷的生成与释放进入大气引起的环境问题等,是值得关注的研究方向。

关键词：甲氧基木质素稳定C、H同位素演化特征有机地球化学

Kinetic studies on the pyrolysis of asphaltenes from different types of kerogens

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Chinese Science Bulletin 2000年第S1期45卷 53-59页

作者： GENG Ansong liao zewen State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China

The pyrolysis kinetics of a series of asphaltenes, from different types of kerogens, are studied in this work. The results indicate that the distributions of activation energy are over a wide range for the asphaltenes from type I kerogens. There is still a large potential of hydrocarbon generation in case the activation energy is above 350 kJ·mol-1. While the distributions of activation energy are comparatively over a narrow range for the asphaltenes from type Ⅱ and Ⅲ kerogens, there is a little or almost no potential of hydrocarbon generation with the activation energy above 350 kJ· mol-1 respectively. For the asphaltenes from some specific type of kerogens, the pyrolysis kinetics can be applied to marking their maturity. Furthermore, based on detailed discussions of the kinetics parameter frequency factor, the asphaltenes from type I kerogens are considered to be of great potential to regenerate oils, while the asphaltenes’ potential for oil-to-gas conversion tends to go down in order of

关键词： asphaltenes pyrolysis kinetics activation energy frequency factor.

Study of Pyrolysis Kinetics of Asphaltenes in Silurian Oilsands in the Tarim Basin

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Acta Geologica Sinica(English Edition) 2000年第3期74卷 680-684页

作者： liao zewen GENG Ansong State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640Guangdong

It is a special petroleum geological phenomenon that Silurian oilsands are extensively distributed in the central and northeast Tarim basin. Some geochemical studies of the oilsands have been carried out, but there is still great controversy over the hydrocarbon-regenerating potential of oilsands and the possibility of Silurian oilsands as hydrocarbon source rocks. In this study, the kinetics of asphaltenes pyrolysis was directly used to simulate the potential of Silurian oilsands for regenerating hydrocarbons. According to the experimental results, combined with other related organic geochemical analysis, it is considered that Silurian oilsands in the Tarim basin have a high hydrocarbon-regenerating potential and are latent hydrocarbon source rocks.

关键词： asphaltene pyrolysis kinetics Tarim basin Silurian

Microwave-assisted fast synthesis and red-emitting properties of a borotellurate-based phosphor with excellent thermostability

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Journal of Rare Earths 2024年第6期42卷 1036-1045,I0002页

作者： Yuefei Xiang Hong Li Hongzhi Zhang Lin Yang Canyuan liao Tongsheng Yang Junpeng Li zewen Guo Jing Zhu Key Laboratory of LCR Materials and Devices of Yunnan ProvinceYunnan Key Laboratory of Carbon Neutrality and Green Low-carbon TechnologiesSchool of Materials and Energy Yunnan University Kunming650091China

At present,with the increasing application needs of phosphor-converted white light-emitting diode(wLED),the synthetic efficiency and thermal stability of phosphor become urgent problems.Herein,this research reports a microwave-assisted fast synthesis approach to obtain a Sm^(3+)-activated borotellurate Na_(2)Y_(2)TeO_(4)(BO_(3))_(2)(NYTB)red phosphor with high crystallinity,excellent thermostability,and low chromaticity shift.For the NYTB-based phosphor,in contrast to the conventional solid-state synthesis,the microwave-assisted synthesis method involves lower synthesis temperature and shorter processing time.Additionally,the concentration quenching mechanism was determined.The w-LED device packaged with the studied phosphor exhibits a near-standard white light with proper CCT and high Ra parameters.

关键词： Borotellurate Samarium Microwave-assisted synthesis Red-emitting Thermal stability Rareearths

Quantitative assessment of gas washing of oils in the Tazhong area of the Tarim Basin,Northwest China

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Science China Earth Sciences 2009年第1期52卷 12-21页

作者： YANG ChuPeng GENG AnSong liao zewen SUN YongGe ZHANG LüHui State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou510640China Graduate University of Chinese Academy of Sciences Beijing 100049China

Gas washing has been known in the Tazhong area of the Tarim Basin,but its quantitative assessment has not yet been reported.Here the influence of gas washing fractionation in the area was discussed based on the gas chromatogram data of 68 oils and the results of the mixing experiments of a black oil and a condensate.The results show that the intensity of gas washing fractionation decreased generally from northern to southern part and vertically from deep reservoirs to shallow reservoirs.The gas washing fractionation was mainly controlled by fault systems in this area,with the increase of n-alkane mass depletion positively correlated to the number and scale of faults.Gas washing fractionation appears to have affected the hydrocarbon property,and as a result the diversity of the crude oils is markedly controlled by gas washing.In addition,the occurrence of waxy oil in this area may be resulted from multiple factors including gas washing,mixed filling and migration fractionation.

关键词： gas washing n-alkane mole fraction n-alkane mass depletion Tazhong area Tarim Basin