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Characteristics， Distribution Patterns， and Classification of Volcanic Reservoirs in the Huanghua Depression， Bohai Bay Basin， China

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Journal of Earth Science 2022年

作者： Jian Huang Changqian Ma Shihui Zhang Muyue Xu Da Lou Chongbiao Leng mutian qin Hongjun Li State Key Laboratory of Geological Processes and Mineral Resources (GPMR)， Faculty of Earth Sciences， China University of Geosciences (Wuhan) Yichang Earthquake Monitoring Center Station Hubei Earthquake Agency Dagang Oilfield Company， China National Petroleum Corporation Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education， China University of Geosciences (Wuhan) Institute of Geophysics & Geomatics， China University of Geosciences (Wuhan) College of Marine Geosciences， Ocean University of China

Identifying volcanic reservoir types and their distribution patterns in volcanic edifices is important for accurate prediction and exploration of hydrocarbon reservoirs. Herein， we analyzed the distribution patterns of different reservoir levels in volcanic edifices， discussed controlling factors， and reclassified reservoir types. This was done using core observations， whole-rock geochemistry， and reservoir physical property analysis， combined with logging， drilling， seismic， and oil-gas test data. Reservoirs can be divided into three classes based on their physical properties. The Mesozoic intermediate and basic rocks formed class I reservoirs， most lithologies formed class II reservoirs， and diabase intrusions and tight volcanic rocks formed class III reservoirs. Reservoirs form in different lithologies in the Huanghua Depression due to weathering. Tectonic faults deepen the influence of weathering leading to the formation of reservoirs in tight. Additionally， volcanic rhythms and fractures control the vertical distribution of Cenozoic basaltic reservoirs. Volcanic reservoirs are classified into five types based on the main controlling factors and distribution patterns in volcanic edifices: tectonic-alteration， vesicle-fracture， weathered-effusive， weathered-eruptive， and weathered-tectonic types. Among these， the weathered-eruptive type can easily form class I reservoirs， making it the best target for exploration. Whereas the weathered- tectonic and vesicle-fracture types tend to develop class II reservoirs and can be potential targets. The new classification takes into account the relationship between reservoir levels and their distribution in volcanic edifices， it is more conducive to igneous reservoir prediction in the Huanghua Depression. This study provides a novel idea for the classification and comparative study of igneous reservoirs in petroliferous basins.

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Characteristics of the Cretaceous Magmatism in Huanghua Depression and Their Relationships with Hydrocarbon Enrichment

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Journal of Earth Science 2020年第6期31卷 1273-1292页

作者： Fengming Jin Jian Huang Xiugang Pu Changqian Ma Lixin Fu Chongbiao Leng Da Lou mutian qin Dagang Oilfield Company China National Petroleum CorporationTianjin 300280China State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430078China School of Earth Sciences China University of GeosciencesWuhan 430074China

The Huanghua depression located in the hinterland of the Bohai Bay Basin in eastern China is a typical area for the research of multistage magmatic activities with hydrocarbon enrichment,many high-yield wells related to igneous rocks were discovered within the Cretaceous strata in recent ***,the spatial and temporal distribution of Cretaceous igneous rocks remains unclear,and the relationships among magmatic sequence,lithology,and hydrocarbon enrichment have been poorly *** order to solve these problems,core observation,logging analysis,major element analysis,zircon U-Pb chronology,oil-bearing grade statistics and reservoir spaces analysis were used to subdivide the magmatism cycles and to investigate the characteristics of igneous *** results show that the Mesozoic magmatism in Huanghua depression started in 140.1±1.4 Ma and could be divided into two stages including the Early Cretaceous stage and Late Cretaceous *** Early Cretaceous magmatism principally developed basic-intermediate rocks in the north zone,and could be subdivided into 3 cycles with their forming ages of 140,125–119,and 118–111 Ma,*** contrast,the late stage mainly developed intermediate-acid rocks centralized in the south zone and formed at 75–70 *** GR and SP curves are good indicators for the contrast of different lithologies,lithofacies and for magmatic sequences *** magmatism may have an advantage to form reservoirs,since basalt in cycle III in the Early Cretaceous and dacite porphyrite in the Late Cretaceous have great exploration *** and tectonic fractures have an important influence on the formation of reservoir spaces and hydrocarbon *** characteristics of Cretaceous magmatism and igneous reservoirs in Huanghua depression and adjacent areas are summarized,providing important information for igneous reservoirs research and oil-gas exploration in the Cretaceous in related areas.

关键词： Cretaceous magmatism magmatic sequences division igneous reservoir hydrocarbon enrichment Huanghua depression oil-gas reservoir space

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Petrophysical Texture Heterogeneity of Vesicles in Andesite Reservoir on Micro-Scales

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Journal of Earth Science 2021年第4期32卷 799-808页

作者： mutian qin Shuyun Xie Jianbo Zhang Tianfu Zhang Emmanuel John M.Carranza Hongjun Li Jiayi Ma State Key Laboratory of Geological Processes and Mineral Resources(GPMR) School of Earth SciencesChina University of GeosciencesWuhan 430078China School of Geography and Information Engineering China University of GeosciencesWuhan 430074China PetroChina Hangzhou Institute of Petroleum Geology Hangzhou 310023China Geological Sciences School of AgriculturalEarth and Environmental SciencesUniversity of KwaZulu-NatalWestville 3629South Africa Dagang Oilfield Company China National Petroleum CorporationTianjin 300280China

It is of great significance to study the spatial distribution patterns and petrophysical complexity of volcanic vesicles which determine whether the reservoir spaces of the volcanic rocks can accumulate oil and gas and enrich high yields or *** this paper,the digital images of three different textures of vesicular andesite samples,including spherical vesicular andesite,shear deformation vesicular andesite,and secondary filling vesicular andesite,are obtained by microscopic morphology X-CT imaging *** spatial micro-vesicle heterogeneity of vesicular andesite samples with different textures is quantitatively analyzed by fractal and multifractal methods such as box-counting dimension and the moment *** is found that the shear stress weakens the spatial homogeneity since vesicles rupture are accelerated,elongated directionally,and connected with one another under the strain;the secondary filling breaks the vesicles,which significantly enhances the spatial *** addition,shear stress and secondary filling increase the complexity of vesicle microstructures characterized by different fractal and multifractal *** conclusions will provide important theoretical and practical insights into understanding the degassing of volcanic rocks and prediction of high-quality volcanic reservoirs.

关键词： volcanic vesicles fractal and multifractal microscopic morphology heterogeneity X-CT imaging

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面向电力物联网三维空间几何信道建模的研究

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电子与信息学报 2022年第9期44卷 3051-3057页

作者：秦剑华杨穆天路永玲王真胡成博国网江苏省电力有限公司电力科学研究院南京211103 中国石油大学信息科学与工程学院科研院所北京102249

当前研究主要采用椭圆模型描述第6代(6G)电力物联网(IoT)物理层多节点通信场景,忽视了信号传输路径的俯仰角对系统性能造成的影响。为解决这一问题,该文通过建立3维半椭球体几何传输模型描述6G电力物联网物理层通信场景,提高了电力物联... 详细信息

当前研究主要采用椭圆模型描述第6代(6G)电力物联网(IoT)物理层多节点通信场景,忽视了信号传输路径的俯仰角对系统性能造成的影响。为解决这一问题,该文通过建立3维半椭球体几何传输模型描述6G电力物联网物理层通信场景,提高了电力物联网异构网物理层数据传输分析过程中的准确度。在提出的传输分析算法中,通过推导电力物联网通信无线传输信道中不同传输路径的复冲激响应函数表达式,揭示物理层数据的传输特性。数值分析不同传输路径间的互相关特性,探索电力物联网的时域传输特性,验证上述信道传输特性仿真结果的正确性,对于分析与设计电力物联网无线通信系统具有重要的理论依据和技术支撑。

关键词： 6G电力物联网 3维半椭球体信道模型异构网传输特性

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