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塔里木盆地海相原油热裂解的阶段性特征及其意义

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地球化学 2024年第2期53卷 174-182页

作者：路清华黄继文顾忆丁勇夏永涛孙永革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 中国石化西北油田分公司勘探开发研究院新疆乌鲁木齐830011 浙江大学地球科学学院浙江杭州310027

塔里木盆地台盆区深层油气勘探不断取得突破,原油热稳定性及其裂解特征已成为制约塔里木盆地深层下一步油气勘探与评价的瓶颈之一。本研究选择塔河地区未遭受明显次生改造原油,采用黄金管封闭体系热压模拟实验,在恒压、程序升温条件下,... 详细信息

塔里木盆地台盆区深层油气勘探不断取得突破,原油热稳定性及其裂解特征已成为制约塔里木盆地深层下一步油气勘探与评价的瓶颈之一。本研究选择塔河地区未遭受明显次生改造原油,采用黄金管封闭体系热压模拟实验,在恒压、程序升温条件下,系统分析不同热演化阶段原油热裂解产物与残余物的分子组成。结果表明,随着热演化程度的增加,伴随着原油热裂解程度增加引起的化合物裂解、环化、芳构化作用,气体和液态烃产率呈现显著的阶段性变化,并显示不同的分子地球化学特征,据此分为3个阶段:①初始裂解期(Easy Ro<1.2%),与原始油样比较,残留产物全烃色谱特征未发生显著变化;②主裂解期(1.2%

关键词：海相原油热模拟实验原油裂解阶段性深层油气塔里木盆地

Study of genetic evolution of oil inclusion and density of surface oil by measurement of fluorescence lifetime of crude oil and oil inclusion

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Science China Earth Sciences 2017年第1期60卷 95-101页

作者： LIU DeHan XIAO XianMing CHENG Peng sun yongge TIAN Hui PENG PingAn Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China School of Earth Sciences Zhejiang University Hangzhou 310058 China

By using fluorescence lifetime image microscope （FLIM） and time-correlated single photon counting （TCSPC） technique, we measured fluorescence lifetime of crude oils with density of 0.9521-0.7606 g/cm3 and multiple petroleum inclusions from Tazhong uplift of Tarim Basin. As indicated by the test results, crude oil density is closely correlated with average fluorescence lifetime following the regression equation Y=-0.0319X＋0.9411, which can thus be used to calculate density of oil inclusions in relation to fluorescence lifetime and density of corresponding surface crude. For type A oil inclusions showing brown-yellow fluorescence from Tazhong 1 well in Tarim Basin, their average fluorescence lifetime was found to be 2.144-2.765 ns, so the density of surface crude corresponding to crude trapping these oil inclusions is 0.852-0.873 g/cm3, indicating that they are matured oil inclusions trapped at earlier stage ofoil formation. For type B oil inclusions with light yellow-white fluorescence, their average fluorescence lifetime was found to be 4.0294.919 ns, so the density of surface crude corresponding to crude trapping these oil inclusions is 0.784-0.812 g/cm3, indicating that they are higher matured oil inclusions trapped at the second stage of oil formation. For type C oil inclusions showing light blue-green fluorescence, their average fluorescence lifetime was found to be 5.0634.168 ns, so the density of surface crude corresponding to crude trapping these oil inclusions is 0.743-0.779 g/cm3, indicating that they are highly-matured light oil inclusions trapped at the third stage of oil formation.

关键词： Oil inclusion Fluorescence lifetime Tarim Basin Crude density Crude charging episode

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 *** 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 *** results show that the intensity of gas washing fractionation decreased generally from northern to southern part and vertically from deep reservoirs to shallow *** 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 *** washing fractionation appears to have affected the hydrocarbon property,and as a result the diversity of the crude oils is markedly controlled by gas *** 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

Alcohol compounds in Azolla imbricata and potential source implication for marine sediments

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Science China Earth Sciences 2017年第2期60卷 348-359页

作者： MAO ShengYi ZHU XiaoWei WU NengYou JIA GuoDong sun yongge GUAN HongXiang WU DaiDai Key Laboratory of Gas Hydrate Guangzhou Institute of Energy ConversionChinese Academy of SciencesGuangzhou 510640China Key Laboratory of Marginal Sea Geology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China The Key Laboratory of Gas Hydrate Ministry of Land andResourcesQingdao Institute of Marine GeologyQingdao 266071China School of Ocean and Earth Sciences Tongji UniversityShanghai 200092China Department of Geosciences Zhejiang UniversityHangzhou 310037China Guangzhou Center for Gas Hydrate Research Chinese Academy of SciencesGuangzhou 510640China

This study investigated the composition of long-chain alkyl diols, triols, sec-alcohols, hydroxyl acids, and other hydroxylated compounds in Azolla imbricata and compared the organic alcohol components of Azolla filiculoides, Azolla microphylla, and South China Sea （SCS） sediments in order to investigate the possible indication of Azolla being the biological source of diols and triols in SCS sediment. Large amounts of diols, monohydroxy acids, and sec-alcohols with internal hydroxy groups at ω20 were detected in the three types of Azolla. Among these, 1,ω20-diol and ω20-hydroxy acid exhibited strong even-odd predominance distribution, whereas co20-sec-alcohol exhibited strong odd-even predominance distribution. In addition, small amounts of diols, triols, and dihydroxy acids with internal hydroxy groups at 9, 10 or ω9, ω 10 were detected, among which the chain length of C29 was predominate. Compounds having similar structures as those in Azolla reflected a similar biosynthetic pathway： ω20-hydroxy acid exhibiting even-odd predominance distribution is decarboxylated to ω20-sec-alcohol exhibiting odd-even predominance distribution and converted to 1, ω20-diol with even-odd predominance distribution by acyl reduction; ω9,ω10-hydroxy acid is converted to 1,20,21（1, ω9, ω10）-triol by acyl reduction, and then converted to 9,10-diol by hydrogenation and dehydration. The alcohol components in A. imbricata were clearly not the biological source of 1,13/1,14/1,15-C28, 30, 32 diols and 1,3,4-C27.29 triols in the SCS sediment. Certain marine diatoms might be the source of 1,14-C28.30 diol in inshore sediment, but the biological source of diols and triols in the SCS sediment requires further investigation.

关键词： A. imbricata Long-chain alkyl diols Long-chain alkyl triols Hydroxy acids SCS sediment

Detection and indication of 1,3,4-C27-29 triol in the sediment of northern South China Sea

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Science China Earth Sciences 2016年第6期59卷 1187-1194页

作者： ZHU XiaoWei MAO ShengYi WU NengYou JIA GuoDong sun yongge GUAN HongXiang WU DaiDai Key Laboratory of Marginal Sea Geology South China Sea Institute of OceanologyCASGuangzhou 510301China Key Laboratory of Marginal Sea Geology Guangzhou Institute of GeochemistryCASGuangzhou 510640China Key Laboratory of Gas Hydrate Guangzhou Institute of Energy ConversionCASGuangzhou 510640China Department ofGeosciences Zhejiang UniversityHangzhou 310037China Guangzhou Center for Gas Hydrate Research CASGuangzhou 510640China

After the detection of the 1,20,21-C29 long-chain triol in some sediments and freshwater pteridophytes, in this study a new homologous long-chain triol, 1,3,4-C27-29, is detected for the first time in the Site4B core sediment in the northern South China Sea. The hydroxyl location and length of the carbon chain of this newly discovered triol differ from those of 1,20,21-C29 triol. The test results of its molecular distribution and individual carbon isotope reveal that 1,3,4-C29triol has a good correlation with n-C26-30 even carbon-numbered long-chain fatty alcohols, with R2 （n=68） values of 0.905, 0.929 and 0.903, respectively, and its carbon isotope composition, at -32.3%o_1.9%o, is similar to that of rt-C26.30, at -29.13%o^0.87%o, -32.98%o^1.28%o, and -32.98%o^1.28%o. 1,3,4-C29 triol from the Site4B core sediment and terrigenous long-chain fatty alcohol （n-C26.34） show highly consistent distribution trends in the entire section; thus, the former could serve as a proxy indicator of the terrigenous input. Considering that the 1,20,21-C29 triol in previous research belongs to Azolla, which are fresh water pteridophytes, the 1,3,4-C27-29 triol identified in this study might have similar biogenetic derivation. Thus, determination of its biogenic area and growing environment could provide potential organic geochemical evidence supporting the terrigenous input and source in the northern South China Sea.

关键词： Long-chain triol Northern South China Sea Terrigenous input

The occurrence and significance of C_(25)HBI in Cenozoic saline lacustrine source rocks from the Western Qaidam Basin,NW China

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Chinese Science Bulletin 2011年第13期56卷 1390-1398页

作者： ZHANG YongDong sun yongge XIE LiuJuan JIANG AiZhu CHAI PingXia State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China Department of Earth Science Zhejiang University Hangzhou 310027 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

The saline lacustrine deposit of the Oligocene Lower Ganchaigou Formation is the main source rock for the Western Qaidam Basin,NW *** this study,abundant highly branched isoprenoids with 25 carbon atoms (C25HBI) were detected in the upper section of the Lower Ganchaigou Formation.C25HBI is a biomarker for diatoms,and can provide information regarding biogeochemical processes during production and preservation of sedimentary organic *** carbon isotopic values of C25HBI in these source rocks were in the range of-18‰ to-20‰.The relative enrichment in 13C of C25HBI suggests that these isoprenoids were derived from diatom *** this case,the diatoms used HCO3-as an additional carbon source to dissolved CO2 in water column due to their high biological ***,the diatom blooms indicated an abundant nutrient supply to the environment and high primary ***,the occurrence of 13C-enriched C25HBI could be an ideal marker for good source *** decreased concentration of CO2(aq) in the water column induced by diatom blooms can result in an enrichment in 13C of organic matter synthesized by primary *** may be a possible reason for the occurrence of 13C-enriched organic matter in the Cenozoic source rocks of the Western Qaidam *** studies have shown that the high carbon number n-alkanes sourced from diatoms have no carbon ***,the sources of n-alkanes in regional source rocks are complex,and should be considered when discussing the sources of organic matter in future studies.

关键词：柴达木盆地西部湖相烃源岩中国西北新生代盐水湖生物地球化学过程沉积有机质下干柴沟组

Factors controlling the enrichment of natural gas in Kuche depression,Tarim Basin,NW China:Molecular geochemical evidence from sedimentary organic matter

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Chinese Science Bulletin 2004年第S1期49卷 66-71页

作者： sun yongge XIAO Zhongyao LIU Dehan CHAI Pingxia XU Shiping SKLOG Guangzhou Institute of Geochemistry Chinese Academy of SciencesGuangzhou 510640China Tarim Petroleum Exploration and Development Company PetroChinaKuerle 841000China

Using molecular geochemical data from infrared spectrometer and pyrolysis gas chromatography-mass spectrometry, this paper investigates the petroleum generation characteristics of Jurassic coal measures from Kuche depression, Tarim Basin, NW China. The results showed that the Jurassic coaly rocks with medium maturity (R0%: 0.8-1.1) were enriched in gas-prone functionalities (-CH3) and low molecular weight pyrolysates (

关键词： natural gas Jurassic coal measures Kuche depression infrared spectrometer pyrolysis gas chromatography-mass spec-trometry.

Source and composition of sedimentary organic matter in the head of Three Gorges Reservoir: a multiproxy approach using δ^(13)C,lignin phenols, and lipid biomarker analyses

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Acta Geochimica 2017年第3期36卷 452-455页

作者： He Ding Changfeng Zhu Kai Zhang Shangbin Xiao Xingqian Cui yongge sun Institute of Environment and Biogeochemistry (eBig) School of Earth Science Zhejiang University College of Hydraulic and Environmental Engineering China Three Gorges University Department of Earth Atmospheric and Planetary ScienceMassachusetts Institute of Technology

A multiproxy approach including bulk organic carbon, δ^(13) C, lignin phenols, and lipid biomarker analyses were applied to characterize the source and composition of sedimentary organic matter in the head part of Three Gorges Reservoir. OM consisted of both natural(autochthonous and allochthonous) and anthropogenic *** natural OM included input from vascular plants,especially non-woody angiosperms. The allochthonous input included plankton and microbial production, likely due to localized eutrophication. Anthropogenic inputs likely derived from petroleum input and/or urban *** anthropogenic inputs were untreated sewage *** influences were concluded to be regionally specific point sources of pollution based on relative distributions and on the fact that molecular characteristics of sedimentary OM were not distributed smoothly along a gradient.

关键词： Three Gorges reservior Sedimentary organic matter δ^13C Lignin phenols Lipid biomarkers

Constraints on the diversity of crude oil types in the Lunnan Oilfield,Tarim Basin,NW China

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Chinese Science Bulletin 2004年第S1期49卷 19-26页

作者： LU Hong JIA Wanglu XIAO Zhongyao sun yongge PENG Ping’an State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China Tarim Research Institute of Exploration and Development of Petroleum China PetroleumKuerle 841000China

Hydrocarbons, include heavy oils, normal oils, waxy oils and light oils, condensate oils and gases were all found in Lunnan Oilfield, the occurrences of hydrocarbons with complicated physical properties indicates a complicated distribution of reservoirs. By the drilling data, the distribution pattern had been found that, in plan view, the density of crude oils in the western part is heavier than that of oils in the eastern part in Lunnan region, namely the crude oils were mainly found in the western part while the natural gases were mainly found in the eastern, which shows that an obvious differentiation in the east and west part was presented in the Lunnan region. Furthermore, in vertical view, the light hydrocarbons were mainly found in the Carboniferous reservoir while the heavier hydrocarbons were mainly found in the Ordovician and Triassic reservoirs. By analysis of the semi-logarithm distribution of n-alkanes, biomarker ratios and stable carbon isotopic compositions of crude oils, we have found

关键词： mixing differentiation in eastern and western part oil family light oil high waxy oil semi-logarithm distribution of n-alkanes.