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Aliphatic biomarker signatures of early Oligocene-early Miocene source rocks in the central Qiongdongnan Basin:Source analyses of organic matter

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Acta Oceanologica Sinica 2023年第3期42卷 1-18页

作者： Min xu Dujie Hou Xiong Cheng Jun Gan xinde xu Gang Liang Wenjing Ding School of Energy Resources China University of GeosciencesBeijing 100083China Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism Ministry of EducationBeijing 100083China Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering Beijing 100083China Exploration and Development Resource Institute Hainan Branch of China National Offshore Oil CorporationHainan 570300China China National Offshore Oil Corporation(CNOOC)Research Institute Co. Ltd.Beijing 100028China

The geochemical signatures of fifty-four rock samples and three supplementary drill stem test(DST)oils from the Yacheng-Sanya formations in the central Qiongdongnan Basin(CQB)were *** of the early Oligocene-early Miocene(36–16 Ma)palaeovegetation and source analyses of organic matter(OM)were conducted using aliphatic biomarkers in ancient sediments and DST *** the interpreted aquatic and terrigenous OM contributed to the CQB source rocks(SRs)but had varying relative *** four distribution patterns derived from n-alkanes,terpanes,and steranes are representative of four OM composition models of the Yacheng-Sanya SRs,including model A,model B,model C,and model D,which were classified based on the increasing contribution from terrigenous OM relative to aquatic *** terrigenous higher plantderived biomarkers,including oleanane,des-A-oleanane,C_(29)ααα20R sterane,bicadinanes,the C_(19)/(C_(19)+C_(23))tricyclic terpane ratio,and other n-alkane-derived ratios suggest that angiosperms had increased proportions in the palaeoflora from early Oligocene to early Miocene,and the bloom of terrigenous higher plants was observed during deposition of upper Lingshui Formation to lower Sanya *** findings are consistent with the incremental total organic carbon and free hydrocarbons+potential hydrocarbons(S_1+S_2)in the lower Lingshuilower Sanya strata with a significant enrichment of OM in the E_3l_1-N_1s_2 *** maturity-and environmentsensitive aliphatic parameters of the CQB SRs and DST oils suggest that all the samples have predominantly reached their early oil-generation windows but have not exceeded the peak oil windows,except for some immature Sanya Formation *** addition,most of the OM in the analysed samples was characterised by mixed OM contributions under anoxic to sub-anoxic ***,terrestrial-dominant SRs were interpreted to have developed mainly in the Lingshui-Sanya formations and were deposit

关键词： aliphatic biomarkers early Oligocene-early Miocene organic matter sources palaeovegetation reconstruction Qiongdongnan Basin

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Experimental Simulation Study of the Dominant Enrichment Area of Terrestrial Organic Matter in the Shallow-Delta Sedimentary System of the Yacheng Formation in the Qiongdongnan Basin

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Acta Geologica Sinica(English Edition) 2022年第5期96卷 1693-1703页

作者： xu xinde YANG Xibing QU Tong GAO Gang LIANG Gang LI Xing CNOOC China Limited Zhanjiang BranchZhanjiangGuangdong 524057China State Key Laboratory of Petroleum Resources and Prospecting China’s University of PetroleumBeijing 102249China College of Geosciences China’s University of PetroleumBeijing 102249China CNOOC China Limited Hainan BranchHaikou 570312China

Shallow-delta sedimentary systems receive both terrestrial and marine organic matter. As oil and gas exploration activities determine that the source rocks of the deep-water area of the Qiongdongnan Basin, northern South China Sea, are generally rich in and even dominated by terrestrial organic matter, this has led many researchers to examine the rules governing terrestrial organic matter enrichment in shallow-delta sea sedimentary systems. However, the deep burial of source rocks in deep-water areas and the relatively small amount of drilling undertaken have greatly restricted the study of these rules. In this study, the ‘forward modeling' research method was used to observe and analyze the deposition and preservation of terrestrial organic matter through flume experiments, where the depositional results were carefully depicted and sampled. The total organic carbon content of selected samples was measured and when combined with qualitative observations and quantitative comparison results, the dominant enrichment areas of terrestrial organic matter were identified. The experimental results show that the overbank parts of the delta front, the dune countercurrent surface, the low-lying parts, the delta front slope area and the shallow-prodelta sea area are where terrestrial organic matter is predominantly enriched. This provides an important basis and guidance for the prediction of the development areas of marine source rocks with terrestrial input in the deep-water areas of the Qiongdongnan Basin.

关键词： shallow-delta sea sedimentary system deep water area terrestrial organic matter flume experiment enrichment area Qiongdongnan Basin

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Petroleum Origins and Accumulation Patterns in the Weixinan Sag in the Beibu Gulf Basin,Using Subsag B as an Example

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Acta Geologica Sinica(English Edition) 2020年第5期94卷 1515-1530页

作者： GAO Gang xu xinde QU Tong GAN Jun DANG Wenlong ZHOU Xiaoxiao LIU Fengyan School of Geosciences Chinese University of PetroleumBeijing 102249China State Key Laboratory of Petroleum Resource and Prospecting Chinese University of PetroleumBeijing 102249China Research Institute of Zhanjiang Branch of CNOOC Ltd.Zhanjiang Guangdong 524057China Exploration&Development Research Institute Petro China Huabei Oilfield CompanyRenqiuHebei 062552China

Crude oil has been discovered in the Paleogene and Neogene units of the Weixinan Sag in the Beibu Gulf *** determine the source and accumulation mode of this crude oil,12 crude oil samples and 27 source rock samples were collected and an extensive organic geochemical analysis was conducted on *** on the geological conditions and the analytical results,the types,origins and accumulation patterns of crude oil in the study area were *** for a shallowly-buried and biodegraded crude oil deposit in Neogene rocks,the crude oil samples in the study area were *** of the crude oils were derived from lacustrine source *** to biomarker compositions,the crude oils could be divided into two families,A and B,distinctions that were reinforced by differences in carbon isotope composition and spatial ***-source correlation analysis based on biomarkers revealed that Family A oils were derived from the mature oil shale at the bottom of the second member of the Liushagang Formation,while the Family B oils formed in the mature shale of the Liushagang *** Family A oils,generated by oil shale,mainly migrated laterally along sand bodies and were then redistributed in adjacent reservoirs above and below the oil shale layer,as well as in shallow layers at high structural positions,occupying a wide distribution *** Family B oils were generated by other shale units before migrating vertically along faults to form reservoirs nearby,resulting in a narrow distribution range.

关键词： crude oil family oil shale shale petroleum migration Weixinan Sag Beibu Gulf Basin

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Deep Learning and Network Analysis:Classifying and Visualizing Geologic Hazard Reports

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Journal of Earth Science 2024年第4期35卷 1289-1303页

作者： Wenjia Li Liang Wu xinde xu Zhong Xie Qinjun Qiu Hao Liu Zhen Huang Jianguo Chen School of Geography and Information Engineering China University of GeosciencesWuhan430078China Key Laboratory of Geological Survey and Evaluation of Ministry of Education China University of GeosciencesWuhan430078China School of Computer Science China University of GeosciencesWuhan430078China Key Laboratory of Urban Land Resources Monitoring and Simulation Ministry of Natural ResourcesShenzhen518034China Hubei Key Laboratory of Intelligent Vision Based Monitoring for Hydroelectric Engineering China Three Gorges UniversityYichang443002China Wuhan Geomatics Institute Wuhan430074China Faculty of Earth Resources China University of GeosciencesWuhan430074China

If progress is to be made toward improving geohazard management and emergency decision-making,then lessons need to be learned from past geohazard information.A geologic hazard report provides a useful and reliable source of information about the occurrence of an event,along with detailed information about the condition or factors of the *** such reports,however,can be a challenging process because these texts are often presented in unstructured long text formats,and contain rich specialized and detailed *** text classification is commonly used to mine disaster text data in open domains(e.g.,news and microblogs).But it has limitations to performing contextual long-distance dependencies and is insensitive to discourse *** deficiencies are most obviously exposed in long text ***,this paper uses the bidirectional encoder representations from Transformers(BERT),to model long ***,utilizing a softmax layer to automatically extract text features and classify geohazards without manual *** latent Dirichlet allocation(LDA)model is used to examine the interdependencies that exist between causal variables to visualize *** proposed method is useful in enabling the machine-assisted interpretation of text-based ***,it can help users visualize causes,processes,and other geohazards and assist decision-makers in emergency responses.

关键词： geologic hazard network analysis latent dirichlet allocation text classification deep learning

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Meso-Zeaxanthin:One of Important Carotenoids for Human Health

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Journal of Northeast Agricultural University(English Edition) 2010年第3期17卷 76-81页

作者： xu xinde JIANG Lianzhou ZHANG Lihua SHAO Bin Zhejiang Medicine Co. Ltd. Xinchang Pharmaceutical Factory Xinchang 312500 Zhejiang China College of Food Sciences Northeast Agricultural University Harbin 150030 China

As one of optical isomers of zeaxanthin, meso-zeaxanthin is an important ingredient of macular pigment. Compared with lutein and zeaxanthin, meso-zeaxanthin may display strong functions as antioxidant and filtering short-wavelength, for example, the blue light. Comparisons among lutein, zeaxanthin and meso-zeaxanthin as well as functions and distributions together with the source of meso-zeaxanthin were discussed. The application as a supplement of diet and issues should be studied in the future for mesozeaxanthin were also analyzed.

关键词： meso-zeaxanthin function distribution source application

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几种β-胡萝卜素微胶囊干粉的压缩特性和成型机理

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化工学报 2007年第2期58卷 452-459页

作者：许新德姚善泾邵斌浙江大学化学工程与生物工程学系浙江杭州310027 浙江医药股份有限公司新昌制药厂浙江新昌312500

为了比较几种不同配方和生产工艺得到的β-胡萝卜素干粉的压缩特性和形成片剂的能力,考察了其干粉的粉体特征,以及在压缩过程中粉体的微观结构变化,并通过Heckel方程和Kawatika方程具体表征其压缩行为,分析其成型机理,结合加速实验时各... 详细信息

为了比较几种不同配方和生产工艺得到的β-胡萝卜素干粉的压缩特性和形成片剂的能力,考察了其干粉的粉体特征,以及在压缩过程中粉体的微观结构变化,并通过Heckel方程和Kawatika方程具体表征其压缩行为,分析其成型机理,结合加速实验时各片剂中β-胡萝卜素的保留率的变化,认为以明胶为壁材,通过淀粉床流化干燥技术得到的β-胡萝卜素微胶囊干粉在挤压时主要是通过塑性变形成型,而且其中的β-胡萝卜素稳定性好,这种干粉最适合于制成片剂。

关键词： β-胡萝卜素干粉 Heckel方程 Kawatika方程挤压性成型机理

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两种微囊化β-胡萝卜素干粉在水中的溶解性能

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化工学报 2007年第7期58卷 1792-1797页

作者：许新德姚善泾邵斌浙江大学化学工程与生物工程学系浙江杭州310027 浙江医药股份有限公司新昌制药厂浙江新昌312500

溶解性能是粉粒状物质的一个重要理化指标,但在测量过程中由于细小微粉易结“团块”并黏附在器壁或搅拌桨上,会影响测量结果。本研究自行设计了一个新的实验装置,以水分散液色度作为监控指标,可以准确地测定微囊化β-胡萝卜素干粉在水... 详细信息

溶解性能是粉粒状物质的一个重要理化指标,但在测量过程中由于细小微粉易结“团块”并黏附在器壁或搅拌桨上,会影响测量结果。本研究自行设计了一个新的实验装置,以水分散液色度作为监控指标,可以准确地测定微囊化β-胡萝卜素干粉在水中的溶解性能。通过分析其溶解动力学和溶解活化能,找出了其溶解行为的限速因子,并提出了改善其溶解性能的对策,对优化微囊化β-胡萝卜素干粉的配方具有很好的指导意义。

关键词： β-胡萝卜素微囊化干粉溶解性能水分散液色度溶解动力学溶解活化能

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Measurement and Influence Factors of the Flowability of Microcapsules with High-content β-Carotene

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Chinese Journal of Chemical Engineering 2007年第4期15卷 579-585页

作者：许新德姚善泾韩宁邵斌 Department of Chemical and Biochemical Engineering Zhejiang University Hangzhou 310027 China Xinchang Pharma. Factory Zhejiang Medical Co. Ltd. Xinchang 312500 China

The flowability of five kinds of microencapsulation powders,with differentβ-carotene contents and by two alternative particle-forming technologies ***-drying and starch-catching beadlet technology,was meas- *** actual flow properties of the five powders were compared based on bin-flow test,and three flow indexes (Hausner ratio,repose angle and flow index)were *** was found that the repose angle is the most suitable index to reflect the flowability of these powders for the particle properties would not be altered due to compaction or tapping during the measuring *** size and particle size distribution play most important roles in the flowability of these granular materials,which was also influenced by other factors like shape,surface texture,sur- face roughness,*** with wall material of gelatin and a layer of modified starch absorbed on the sur- face showed excellent flowabilities and good mechanical properties,and they are favorable for tabletting to supply β-carotene.

关键词： β-carotene microcapsule powders flowability Hausner ratio repose angle

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三角洲—浅海沉积体系陆源有机质分布控制因素

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沉积学报 2020年第3期38卷 648-660页

作者：屈童高岗徐新德刘凤妍中国石油大学(北京)油气资源与探测国家重点实验室北京102249 中国石油大学(北京)地球科学学院北京102249 中海石油(中国)有限公司湛江分公司广东湛江524057 华北油田分公司勘探开发研究院河北任丘062552

三角洲—浅海沉积体系中同时存在陆源有机质与海洋有机质,向深水方向陆源有机质的分布受限,但越来越多的深水区油气勘探实践发现陆源有机质的贡献,证明陆源有机质在深水区的存在及其对油气生成具有重要意义。通过系统分析陆源有机质的... 详细信息

三角洲—浅海沉积体系中同时存在陆源有机质与海洋有机质,向深水方向陆源有机质的分布受限,但越来越多的深水区油气勘探实践发现陆源有机质的贡献,证明陆源有机质在深水区的存在及其对油气生成具有重要意义。通过系统分析陆源有机质的分布规律,从而阐述了影响陆源有机质分布的主要因素及其相互关系。研究结果表明:陆源有机质的分布受碎屑粒度、矿物组成、有机质组成、水动力类型、水动力强度、水体盐度及pH值等多因素控制,各因素间相互联系、相互影响。将其控制因素可系统归纳为物源条件、搬运条件及沉积与保存条件。水动力类型与水动力强度是陆源有机质存在于深水区的关键因素,生物作用可能成为陆源有机质分布的主控因素,环境因素及成岩作用是影响陆源有机质保存的重要因素。

关键词：三角洲—浅海沉积体系陆源有机质分布规律影响因素

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琼东南盆地深水东区Y8-1含气构造天然气来源及侧向运聚模式

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地球科学 2019年第8期44卷 2609-2618页

作者：张迎朝甘军徐新德梁刚李兴中海石油(中国)有限公司湛江分公司

综合钻井天然气地球化学、地震资料,分析了琼东南盆地深水东区Y8-1构造天然气成因、来源及侧向运聚模式.天然气轻烃C6、C7组成分析表明,Y8-1构造天然气既有别于松东凹陷北坡的油型气,也不同于深水L17-2气田的煤型气.根据天然气乙烷、丙... 详细信息

综合钻井天然气地球化学、地震资料,分析了琼东南盆地深水东区Y8-1构造天然气成因、来源及侧向运聚模式.天然气轻烃C6、C7组成分析表明,Y8-1构造天然气既有别于松东凹陷北坡的油型气,也不同于深水L17-2气田的煤型气.根据天然气乙烷、丙烷碳同位素特征,判断Y8-1构造天然气具有煤型气和油型气混合成因特征.选择盆地东部典型煤型气、油型气作为端元,计算得到Y8-1构造天然气中煤型气占53.3%、油型气占46.7%,分别来源于松南-宝岛凹陷下渐新统崖城组陆源海相烃源岩、始新统湖相烃源岩,两套烃源岩均具备生成成熟-高成熟天然气的地质条件.松南-宝岛凹陷中烃源岩生成的天然气沿断裂、构造脊、砂岩层侧向长距离运移,在Y8-1崖城组、花岗岩基岩圈闭中聚集成藏.

关键词：天然气成因轻烃碳混源气深水东区琼东南盆地

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