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Pore structure characteristics and controlling factors of different lithofacies in lacustrine shale: A case study of Fengcheng Formation in Mahu Sag， Junggar Basin

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Journal of Earth Science 2024年

作者： Jiahao Lü Fujie Jiang Jing Xue Tao Hu Yuping Wu Chenxi Zhang Meiling Hu Renda Huang Key Laboratory of Petroleum Resource Research， Institute of Geology and geophysics， Chinese Academy of Sciences State Key Laboratory of Petroleum Resources and Prospecting， China University of Petroleum (Beijing) college of Geosciences， China University of Petroleum (Beijing) University of Chinese Academy of Sciences Research Institute of Oriental Geophysical Company，CNPC

The practice of shale oil exploration and development all over the world has shown that reservoir quality is a key factor restricting oil and gas production， the study of ultra-deep (4 500 m) reservoirs in petroliferous basins is a hot spot for oil and gas exploration in the world today. In this paper， taking the Fengcheng Formation (P1f) in Mahu Sag of Junggar Basin as an example， through experiments such as geochemistry， whole rock analysis， FE-SEM， N2 adsorption， and CO2 adsorption， the lithofacies are separated， and the pore structure properties of the various lithofacies are compared. Discuss the primary influencing elements that lead to pore structure differences. The results reveal that the shale of the P1f can be separated into four lithofacies (namely felsic shale， mixed shale， lime shale and dolomitic shale)， according to the mineral composition. The shale pores of P1f develop intergranular pores， intragranular pores， organic pores and micro-fractures. Among them， intergranular pores， intragranular pores and micro-fractures are the most developed， and the pore size is larger， which is a favorable storage space. Different lithofacies have different pore development characteristics. With the change of lithofacies (mixed shale - dolomitic shale - lime shale - felsic shale)， the size of the developed pores changes from small to large， and the pore structure changes from "Mainly microporous" to "mainly macropores". The felsic shale has developed laminae， mainly mesopores and macropores， with the largest pore diameter and the highest content of brittle minerals， which is the dominant lithofacies in the shale oil reservoir of the P1f. TOC， felsic and clay minerals all affect the pore development of shale in the P1f， but the influence of organic matter and inorganic minerals on pore volume varies with pore size. The purpose of this article is to characterize the pore structures and regulators of various lithofacies in lacustrine shale and to provide new ideas for

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Preliminary research and scheme design of deep underground in situ geo-information detection experiment for Geology in Time

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International Journal of Mining Science and Technology 2024年第1期34卷 1-13页

作者： Heping Xie Ru Zhang Zetian Zhang Yinshuang Ai Jianhui Deng Yun Chen Yong Zhou Mingchuan Li Liqiang Liu Mingzhong Gao Zeqian Yang Weiqiang Ling Heng Gao Qijun Hao Kun Xiao Chendi Lou State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering Sichuan UniversityChengdu 610065China college of Water Resource&Hydropower Sichuan UniversityChengdu 610065China Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization Institute of Deep Earth Sciences and Green EnergyShenzhen UniversityShenzhen 518060China Institute of Geology and geophysics Chinese Academy of SciencesBeijing 100029China Yalong River Hydropower Development Company Limited Chengdu 610051China

The deep earth,deep sea,and deep space are the main parts of the national“three deep”strategy,which is in the forefront of the strategic deployment clearly defined in China’s 14th Five-Year Plan(2021-2025)and the Long-Range Objectives Through the Year *** is important to reveal the evolutionary process and mechanism of deep tectonics to understand the earth’s past,present and *** academic con-notation of Geology in Time has been given for the first time,which refers to the multi-field evolution response process of geological bodies at different time and spatial scales caused by geological processes inside and outside the *** on the deep in situ detection space and the unique geological envi-ronment of China Jinping Underground Laboratory,the scientific issue of the correlation mechanism and law between deep internal time-varying and shallow geological response is given *** research and frontier exploration on deep underground in situ geo-information detection experiments for Geology in Time are designed to be carried out,which will have the potential to explore the driving force of Geology in Time,reveal essential laws of deep earth science,and explore innovative technologies in deep underground engineering.

关键词： Deep underground Geology in Time China Jinping Underground Laboratory In situ detection

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Identification of the non-stationarity of extreme temperature events and teleconnections with solar activity and large-scale atmospheric circulation: A case study in the Yangtze River Economic Belt

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Journal of Earth Science 2024年

作者： Lin Zhang Jingyun Ling Shengzhi Huang Hongbin Zhan Yi Wu Menggui Jin Qiang Huang State Key Laboratory of Eco-hydraulics in Northwest Arid Region， Xi'an University of Technology college of Design and Engineering， National University of Singapore Yinshanbeilu Grassland Eco-Hydrology National Observation and Research Station， China Institute of Water Resources and Hydropower Research Department of Geology and geophysics， Texas A&M University， college Station School of Earth System Science， Tianjin University School of Environmental Studies， China University of Geosciences

In recent decades， extreme climate events have become a major problem worldwide. To understand the uncertainty in the response of extreme events to global warming， regional assessments are required for various climatic and geographic regions. The spatiotemporal distribution of extreme temperature events in the Yangtze River Economic Belt (YREB) from 1960 to 2019， including interannual changes and their teleconnections with solar activity and large-scale atmospheric circulation， were analyzed using eight indices of extreme temperature events. Over the past six decades， the climate in the YREB region has seen a warming trend， characterized by an increase in extreme warm events and a decrease in extreme cold events. The extreme temperature indices exhibit strong spatial variability. The warm extremes display a significant upward trend across the YREB， while cold extremes are primarily concentrated in the western part of the region. In recent decades， both warm and cold extremes have significant interannual variations， and these events predominantly oscillate over periods of less than four years. After 1985， the relationship between El Ni?o-Southern Oscillation (ENSO)， Arctic Oscillation (AO)， Pacific Decadal Oscillation (PDO) and extreme temperature events has changed significantly compared with pre-1985， and the direction of the phase angle can determine the positive and negative effects of the two time-series. ENSO， AO and PDO mainly have positive impacts on extreme temperature events， with ENSO and AO exerting greater impacts than PDO. In contrast， solar activity mainly has a negative impact on these events. Furthermore， the notable interdecadal changes in extreme temperature events， especially warm extremes， may be caused by the shift in the PDO phase. Therefore， the results of the study are important for the YREB region to take effective measures to mitigate the potential impacts of human activities on regional warming.

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Beyond microbial carbon use efficiency

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National Science Review 2024年第04期11卷 33-35页

作者： Ke-Qing Xiao Chao Liang Zimeng Wang Jingjing Peng Yao Zhao Ming Zhang Mingyu Zhao Shuiqing Chen Yong-Guan Zhu Caroline L.Peacock State Key Lab of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of Sciences University of Chinese Academy of Sciences Institute of Applied Ecology Chinese Academy of Sciences Department of Environmental Science and Engineering Fudan University college of Resources and Environmental Sciences China Agricultural University State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences State Key Laboratory of Agricultural Microbiology College of Resources and Environment Huazhong Agricultural University Key Laboratory of Cenozoic Geology and Environment Institute of Geology and Geophysics Chinese Academy of Sciences School of Earth and Environment University of Leeds

Microbial carbon use efficiency (CUE)is defined as the proportion of microbial biomass growth C versus substrate C uptake, and thus provides a useful measure of microbially driven accumulation and loss of soil organic carbon (SOC)[1]. In a recent study published in Nature [2],the authors used a data-driven machinelearning approach to conclude that CUE promotes global SOC storage based on a positive correlation between CUE and SOC content and that, based on sensitivity analysis, CUE is at least four times as important as six other evaluated factors,namely plant C inputs, C input allocation, non-microbial C transfer, substrate decomposability, environmental modifications and vertical transport.

关键词： SOIL-CARBON ORGANIC-MATTER

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Quantitative prediction model for the depth limit of oil accumulation in the deep carbonate rocks:A case study of Lower Ordovician in Tazhong area of Tarim Basin

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Petroleum Science 2024年第1期21卷 115-124页

作者： Wen-Yang Wang Xiong-Qi Pang Ya-Ping Wang Zhang-Xin Chen Fu-Jie Jiang Ying Chen State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China college of Geosciences China University of Petroleum(Beijing)Beijing102249China Research Institute of Exploration and Development PetroChina Southwest Oil&Gas Field CompanyChengdu610041SichuanChina Chemical and Petroleum Engineering Schulich School of EngineeringUniversity of CalgaryCalgaryT2N 1N4Canada

With continuous hydrocarbon exploration extending to deeper basins,the deepest industrial oil accumulation was discovered below 8,200 m,revealing a new exploration ***,the extent to which oil exploration can be extended,and the prediction of the depth limit of oil accumulation(DLOA),are issues that have attracted significant attention in petroleum *** it is difficult to characterize the evolution of the physical properties of the marine carbonate reservoir with burial depth,and the deepest drilling still cannot reach the ***,the DLOA cannot be predicted by directly establishing the relationship between the ratio of drilling to the dry layer and the *** this study,by establishing the relationships between the porosity and the depth and dry layer ratio of the carbonate reservoir,the relationships between the depth and dry layer ratio were obtained *** depth corresponding to a dry layer ratio of 100%is the *** on this,a quantitative prediction model for the DLOA was finally *** results indicate that the porosity of the carbonate reservoir,Lower Ordovician in Tazhong area of Tarim Basin,tends to decrease with burial depth,and manifests as an overall low porosity reservoir in deep *** critical porosity of the DLOA was 1.8%,which is the critical geological condition corresponding to a 100%dry layer ratio encountered in the *** depth of the DLOA was 9,000 *** study provides a new method for DLOA prediction that is beneficial for a deeper understanding of oil accumulation,and is of great importance for scientific guidance on deep oil drilling.

关键词： Deep layer Tarim Basin Hydrocarbon accumulation Depth limit of oil accumulation Prediction model

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早寒武纪清江丝菌牵出硫酸盐还原菌与地球环境协同演化历史

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Science Bulletin 2024年第10期69卷 1486-1494页

作者：崔琳浩朱珂磊李瑞云常超吴来源刘伟傅东静刘沛余邱浩唐国强李秋立 Robert R.Gaines 陶昕王寅李金华张兴亮 State Key Laboratory of Continental Dynamics Shaanxi Key Laboratory of Early Life and EnvironmentsDepartment of GeologyNorthwest UniversityXi’an 710069China Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Department of Geology Pomona CollegeClaremont CA 91711USA State Key Laboratory of Microbial Metabolism School of Life Sciences and BiotechnologyShanghai Jiao Tong UniversityShanghai 200240China

Sulfate reduction is an essential metabolism that maintains biogeochemical cycles in marine and terrestrial *** reducers are exclusively prokaryotic,phylogenetically diverse,and may have evolved early in Earth’s ***,their origin is elusive and unequivocal fossils are *** we report a new microfossil,Qingjiangonema cambria,from518-million-year-old black shales that yield the Qingjiang *** is a long filamentous form comprising hundreds of cells filled by equimorphic and equidimensional pyrite microcrystals with a light sulfur isotope *** lines of evidence indicate Qingjiangonema was a sulfate-reducing bacterium that exhibits similar patterns of cell organization to filamentous forms within the phylum Desulfobacterota,including the sulfate-reducing Desulfonema and sulfide-oxidizing cable *** analyses confirm separate,independent origins of multicellularity in Desulfonema and in cable *** clock analyses infer that the Desulfobacterota,which encompass a majority of sulfate-reducing taxa,diverged~2.41 billion years ago during the Paleoproterozoic Great Oxygenation Event,while cable bacteria diverged~0.56 billion years ago during or immediately after the Neoproterozoic Oxygenation *** together,we interpret Qingjiangonema as a multicellular sulfate-reducing microfossil and propose that cable bacteria evolved from a multicellular filamentous sulfate-reducing *** infer that the diversification of the Desulfobacterota and the origin of cable bacteria may have been responses to oxygenation events in Earth’s history.

关键词： Cambrian Qingjiangonema Sulfate-reducing bacteria Cable bacteria Qingjiang biota Black shale

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Geophysical evidence of large-scale silica-rich fluid flow above the continental subduction interface

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Science China Earth Sciences 2024年第9期67卷 2796-2809页

作者： Yuantong MAO Liang ZHAO Marco G.MALUSA Stefano SOLARINO Silvia PONDRELLI Baolu SUN Coralie AUBERT Simone SALIMBENI Elena EVA Stéphane GUILLOT State Key Laboratory of Lithospheric and Environmental Coevolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China college of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Department of Earth and Environmental Sciences University of Milano-BicoccaMilan 20126Italy Istituto Nazionale di Geofisica e Vulcanologia Osservatorio Nazionale TerremotiGenova 16145Italy Istituto Nazionale di Geofisica e Vulcanologia Sezione di BolognaBologna 40127Italy Université Grenoble Alpes Université Savoie Mont BlancCNRSIRDUGEISTerreGrenoble 38000France

Fluids in subduction zones can have major effects on subduction ***,geophysical constraints on the scale and impact of fluid flow during continental subduction are still *** we analyze the VP/VS ratios in the Western Alpine region,hosting one of the best-preserved fossil continental subduction zones worldwide,to investigate the impact of fluid flow during continental *** found a belt of high VP/VS ratios>1.9 on the upper-plate side of the subduction zone,consistent with a partially serpentinized upper-plate mantle,and a belt of unusually low VP/VS ratios<1.7 on the lower-plate side,at depths shallower than 30 *** propose that these low VP/VS ratios result from a widespread network of silica-rich veins,indicating past fluid flow along the continental subduction *** results suggest that past fluid flow may have reduced the effective stress along the subduction interface thus favoring continental subduction.

关键词： Western Alps Crustal structure Receiver function Vp/Vs ratio Silica enrichment

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A Hybrid Dung Beetle Optimization Algorithm with Simulated Annealing for the Numerical Modeling of Asymmetric Wave Equations

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Applied geophysics 2024年第3期21卷 513-527,618页

作者： Wei Xu-ruo Bai Wen-lei Liu Lu Li You-ming Wang Zhi-yang college of Information Science and Technology Beijing University of Chemical TechnologyBeijingPRC Key Laboratory of Petroleum Resources Research Institute of Geology and GeophysicsChinese Academy of SciencesBeijingPRC University of Chinese Academy of Sciences BeijingChina Aramco Research Center-Beijing Aramco AsiaBeijingChina

In the generalized continuum mechanics(GCM)theory framework,asymmetric wave equations encompass the characteristic scale parameters of the medium,accounting for microstructure *** study integrates two theoretical branches of the GCM,the modified couple stress theory(M-CST)and the one-parameter second-strain-gradient theory,to form a novel asymmetric wave equation in a unified *** modeling of the asymmetric wave equation in a unified framework accurately describes subsurface structures with vital implications for subsequent seismic wave inversion and imaging ***,employing finite-difference(FD)methods for numerical modeling may introduce numerical dispersion,adversely affecting the accuracy of numerical *** design of an optimal FD operator is crucial for enhancing the accuracy of numerical modeling and emphasizing the scale ***,this study devises a hybrid scheme called the dung beetle optimization(DBO)algorithm with a simulated annealing(SA)algorithm,denoted as the SA-based hybrid DBO(SDBO)*** FD operator optimization method under the SDBO algorithm was developed and applied to the numerical modeling of asymmetric wave equations in a unified *** the DBO and SA algorithms mitigates the risk of convergence to a local *** numerical dispersion outcomes underscore that the proposed SDBO algorithm yields FD operators with precision errors constrained to 0.5‱while encompassing a broader spectrum *** result confirms the efficacy of the SDBO ***,the numerical modeling results demonstrate that the new FD method based on the SDBO algorithm effectively suppresses numerical dispersion and enhances the accuracy of elastic wave numerical modeling,thereby accentuating scale *** result is significant for extracting wavefield perturbations induced by complex microstructures in the medium and the analysis of scale effects.

关键词： Finite-difference Asymmetric wave equation Numerical modeling DBO algorithm SA algorithm

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Chemical, carbon and sulfur isotopic compositions constrain the origin of Upper Carboniferous-Lower Triassic gases in eastern Sichuan Basin, SW China

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Science China Earth Sciences 2024年第10期67卷 3169-3185页

作者： Chunfang CAI Ilya KUTUZOV Wenhua MEI Daowei WANG Bing LUO Shipeng HUANG Bing HE Alon AMRANI China University of Petroleum National Key Lab Petroleum Resource&EngineeringBeijing 102249China State Key Laboratory of Lithospheric and Environmental Coevolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Institute of Earth Sciences The Hebrew UniversityJerusalem 91904Israel college of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Yulin University Yulin 719000China Research Institute of Exploration and Development Southwest Oil&Gas Field CompanyPetroChinaChengdu 610051China PetroChina Research Institute of Petroleum Exploration and DevelopmentBeijing 100083China

Methane dominated gas is one of the cleanest energy resources;however, there is no direct method to determine its source rock. Natural gases produced from the eastern Sichuan Basin together with seismic data were studied for their sources and secondary alteration by thermochemical sulfate reduction(TSR). Our results demonstrate that Upper Permian to Lower Triassic(P_(3)ch-T_(1)f) gases in the surrounding of the Kaijiang-Liangping area show volatile organic sulfur compounds(VOSCs) δ^(34)S values close to those of the associated H_(2)S, and may have been altered by methane-dominated TSR, resulting in positive shift in methane δ^(13)C_(1)values with increasing TSR extents. Other(or group 2) gases produced from the P_(3)ch-T_(1)f reservoirs from the southern area and the Upper Carboniferous to Middle Permian(C_(2)h-P_(2)q) from the eastern Sichuan Basin are not significantly changed by TSR, show similar δ^(34)S values between the kerogens and some VOSCs, and may have been derived from the Lower Silurian and Middle Permian source rocks. This study demonstrates a case for the first time showing the δ^(34)S values of VOSCs can be used as a tool for direct correlation between non-TSR altered gas and source rocks. Methane-dominated gas pools can be found using gas and source rock geochemistry combined with seismic data.

关键词： Sulfur isotopes Volatile organic sulfur compounds Thermochemical sulfate reduction Sichuan Basin Gas-source rock correlation

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类嫦娥五号玄武岩的非克里普贡献年轻月球陨石

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Science Bulletin 2024年第5期69卷 601-605页

作者：许晶瑶李秋立路凯李献华 State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring(Ministry of Education) School of Geosciences and Info-PhysicsCentral South UniversityChangsha 410083China college of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China

Lunar basalts offer key insights into the magmatic and thermal evolution of the *** constraints deduced from the Apollo and Luna mission samples,as well as lunar meteorites,had previously suggested that lunar volcanism occurred as early as ca.≥4.37 billion years ago(Ga)[1]and ceased around 2.9-2.8 Ga[2],with two major pulses occurring in 3.95-3.58 and 3.38-3.08 Ga[3].But analysis of lunar basaltic samples recently returned by the Chang’e-5 mission reveals 2-billion-year-old volcanism on the Moon,representing the youngest lunar basalts reported to date[4,5].One of the most popular hypotheses for the cause of longlived volcanism on the Moon is that the source region for young lunar volcanism was enriched in radioactive heat-producing elements[2,6].Lunar samples from 3.5 to 3.0 Ga exhibit a gradual increase in the potassium,rare-earth elements,and phosphorus(KREEP)-like component contribution[3],consistent with the radioactive heat-producing elements ***,the demonstrably non-KREEP origin for the 2-billion-year-old Chang’e-5 basalts implies a possible transition in lunar volcanism away from a KREEP-like component contribution occurred between 3.0 and 2.03 Ga[7].Therefore,studying the characteristics and origin of magmatic activity during the period from 3.0 to2.03 Ga is essential to address the timing of the possible transition and to thus extend our understanding of sustaining long-lived volcanism on the ***,this goal is currently hampered by limited available lunar materials.

关键词： magmatic origin basalt

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