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Evolution features of in-situ permeability of low-maturity shale with the increasing temperature,Cretaceous Nenjiang Formation,northern Songliao Basin,NE China

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Petroleum Exploration and Development 2022年第3期49卷 516-529页

作者： HE Wenyuan MENG Qi'an LIN Tiefeng WANG rui liu Xin MA Shengming LI Xin YANG Fan SUN Guoxin Daqing Oilfield Co.Ltd. PetroChinaDaqing 163712China Exploration and Development Research institute of Daqing Oilfield Co.Ltd. Daqing 163712China Heilongjiang Provincial Key Laboratory of Shale Oil&Tight Oil Accumulation Daqing 163712China

Temperature-triaxial pressure permeability testing at the axial pressure of 8 MPa and confining pressure of 10 MPa,closed shale system pyrolysis experiment by electrical heating and scanning electron microscopy analysis are used to study the evolution mechanism of in-situ permeability in the direction parallel to bedding of low-maturity shale from Member 2.K_(2.n_(2.)of Cretaceous Nenjiang Formation in northern Songliao Basin with mainly Type I kerogen under the effect of *** the increasing temperature,the in-situ permeability presents a peak-valley-peak *** lowest value of in-situ permeability occurs at 3.5℃.Under the same temperature,the in-situ permeability decreases with the increase of pore *** in-situ permeability evolution of low-maturity shale can be divided into 5 stages:(1)From 2.℃to 3.0℃,thermal cracking and dehydration of clay minerals improve the ***,the value of permeability is less than 0.01×10^(-3.μm^(2..(2.From 3.0℃to 3.0℃,organic matter pyrolysis and hydrocarbon expulsion result in mineral intergranular pores and micron pore-fractures,these pores and fractures form an interconnected pore network at limited scale,improving the *** the liquid hydrocarbon,with high content of viscous asphaltene,is more difficult to move under stress and more likely to retain in pores,causing slow rise of the permeability.(3.From 3.0℃to 3.5℃,pores are formed by organic matter pyrolysis,but the adsorption swelling of liquid hydrocarbon and additional expansion thermal stress constrained by surrounding stress compress the pore-fracture space,making liquid hydrocarbon difficult to expel and permeability reduce rapidly.(4)From 3.5℃to 450℃,the interconnected pore network between different mineral particles after organic matter conversion,enlarged pores and transformation of clay minerals promote the permeability to increase constantly even under stress constraints.(5)From 450℃to 500℃,the stable pore system and cro

关键词： Songliao Basin Cretaceous Nenjiang Formation low-maturity shale in-situ conversion pore-fracture structure in-situ permeability shale oil

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Characteristics of clay minerals in sediments of Hemudu area,Zhejiang,China in Holocene and their environmental significance

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China Geology 2019年第1期2卷 8-15页

作者： rui liu Xi Mei Jin Zhang De-bo Zhao Qingdao institute of Marine Geology China Geological SurveyMinistry of Natural ResourcesQingdao 266071China Pilot National Laboratory for Marine Science and Technology(Qingdao) Qingdao 266237China institute of Oceanology Chinese Academy of SciencesQingdao 266071China

The Ningshao Plain experienced sea-level fluctuation and climate change in the Holocene and gave birth to a Neolithic Civilization, the Hemudu Culture (about 5000 BC). Using XRD method, this paper studied the clay mineralogy of sediments in core HMD-13.1 from Hemudu Site area in Ningshao Plain. Results show that the clay mineral assemblages in all samples are quite consistent. They are dominated by illite (about 57%) and smectite (about 2.%), and a small amount of kaolinite (about 6%) and chlorite (about 9%). In addition, illite, chlorite, and kaolinite are originated mainly from eolian loesses. Smectite is resulted mainly from chemical weathering of local volcanic rocks outcropped. Illite crystallinity indicates the climatic characteristics of the source region, and illite chemistry index reflects the climate nature of the sedimentary area. It is our understanding that water medium properties in a sedimentary environment affect clay mineral assemblage and the distribution, based on which were cognized the Holocene transgression-regression events in the Hemudu Site area. These mineral indices are well comparable with geochemical indicators in identifying the transgression-regression events. We believe that these events affected the ancient civilization of the ancient residential communities at the time.

关键词： Clay minerals Provenance Holocene Hemudu Culture Zhejiang

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A deep‐sea sulfate‐reducing bacterium generates zero‐valent sulfur via metabolizing thiosulfate

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mLife 2022年第3期1卷 257-271页

作者： rui liu Yeqi Shan Shichuan Xi Xin Zhang Chaomin Sun CAS and Shandong Province Key Laboratory of Experimental Marine Biology Center of Deep Sea ResearchInstitute of OceanologyChinese Academy of SciencesQingdaoChina Laboratory for Marine Biology and Biotechnology Qingdao National Laboratory for Marine Science and TechnologyQingdaoChina Center of Ocean Mega‐Science Chinese Academy of SciencesQingdaoChina College of Earth Science University of Chinese Academy of SciencesBeijingChina CAS Key Laboratory of Marine Geology and Environment Center of Deep Sea ResearchInstitute of OceanologyChinese Academy of SciencesQingdaoChina

Zero‐valent sulfur(ZVS)is a crucial intermediate in the sulfur geobiochemical circulation and is widespread in deep‐sea cold ***‐oxidizing bacteria are thought to be the major contributors to the formation of ***,ZVS production mediated by sulfate‐reducing bacteria(SRB)has rarely been *** this study,we isolated and cultured a typical SRB designated Oceanidesulfovibrio marinus CS1 from deep‐sea cold seep sediment in the South China *** show that *** CS1 forms ZVS in the medium supplemented with *** and protein activity assays revealed that thiosulfate reductase(PhsA)and the sulfide:quinone oxidoreductase(SQR)played key roles in driving ZVS formation in *** *** this process,thiosulfate firstly was reduced by PhsA to form sulfide,then sulfide was oxidized by SQR to produce *** expressions of PhsA and SQR were significantly upregulated when *** CS1 was cultured in a deep‐sea cold seep,strongly indicating that strain CS1 might form ZVS in the deep‐sea ***,homologs of phsA and sqr were widely identified from microbes living in sediments of deep‐sea cold seep in the South China Sea by the metagenomic *** thus propose that SRB containing phsA and sqr genes potentially contribute to the formation of ZVS in deep‐sea cold seep environments.

关键词： cold seep in situ sulfate reducing bacteria sulfide oxidation zero‐valent sulfur

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基于太赫兹频谱的绝缘油中微量甲醇无损检测新方法

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光谱学与光谱分析 2024年第5期44卷 1405-1411页

作者：何雨欣杨丽君俞华陈奇宇成立廖瑞金输变电装备技术全国重点实验室(重庆大学电气工程学院) 重庆400044 国网山西省电力公司电力科学研究院山西太原030001

甲醇是油纸绝缘中纤维素老化的特有标志物,目前采用的顶空气相色谱/质谱测试方法过程繁琐,无法实现无损快速检测。现有的拉曼光谱和红外光谱也难以实现低浓度甲醇(mg·L^(-1)级)的感知。利用太赫兹检测技术对极性物质的敏感性,提出了一... 详细信息

甲醇是油纸绝缘中纤维素老化的特有标志物,目前采用的顶空气相色谱/质谱测试方法过程繁琐,无法实现无损快速检测。现有的拉曼光谱和红外光谱也难以实现低浓度甲醇(mg·L^(-1)级)的感知。利用太赫兹检测技术对极性物质的敏感性,提出了一种实现绝缘油中微量甲醇的无损检测新方法。通过采用克拉玛依2.#矿物绝缘油和色谱级别的甲醇配制浓度为99、59.4、19.8、9.9、4.95、2.48、1.2.、0.62.0.3.和0.15 mg·L^(-1)的含甲醇的绝缘油混合溶液。检测含微量甲醇的绝缘油在太赫兹频段的吸收光谱,发现在1.7 THz左右存在特征峰,其与油中甲醇浓度有较好的定量相关关系,初步在实验室中实现了0.15 mg·L^(-1)的绝缘油中微量甲醇的测量。基于量子化学计算分析揭示了甲醇与绝缘油之间复杂的分子间力使油与甲醇分子协同振动,是太赫兹频段特征峰的机理。甲醇和绝缘油之间复杂的分子间作用力,使得两种分子在太赫兹频段产生协同振动。同时,随着甲醇浓度的增加,甲醇分子间会形成氢键,更易缔合,减少了甲醇分子与绝缘油分子缔合的比例,从而1.7 THz左右的特征峰增长速度变缓。因此,吸收峰的强度与甲醇浓度存在非线性关系。含微量甲醇的老化绝缘油的太赫兹频谱在1.7 THz左右同样出现了吸收峰,在同一甲醇浓度时,吸收峰的强度随着老化天数的增加而增加,增幅与老化程度存在非线性关系,这可能与不同时期的绝缘油裂解的产物含量有关。聚合物和绝缘油对太赫兹波的低吸收性,有机会实现变压器上绝缘油中低浓度甲醇的快速原位检测。未来将通过进一步增大光程、绝缘油老化产物与甲醇的协同振动机理分析以及自适应大数据信号提取算法来提高测试下限,并排除老化因素的影响,实现全周期绝缘油中甲醇含量的准确无损测量。

关键词：甲醇太赫兹光谱绝缘油指纹识别

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基于监督下降法的短偏移距瞬变电磁快速反演研究

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物探与化探 2024年第5期48卷 1199-1207页

作者：饶丽婷武欣郭睿党博党瑞荣西安石油大学电子工程学院陕西西安710065 中国科学院矿产资源研究重点实验室中国科学院地质与地球物理研究所北京100029 中国科学院大学地球与行星科学学院北京100049 中国科学院地球科学研究院北京100029 清华大学电子工程系北京100084

短偏移距瞬变电磁法(简称SOTEM)通常采用传统式基于物理建模的反演方法,反演效率较低,不易灵活融入先验信息,而基于数据驱动的反演方法能够提高反演精度与效率,泛化能力却难以保证。为了提高SOTEM数据反演的精度和效率,并兼顾可靠的泛... 详细信息

短偏移距瞬变电磁法(简称SOTEM)通常采用传统式基于物理建模的反演方法,反演效率较低,不易灵活融入先验信息,而基于数据驱动的反演方法能够提高反演精度与效率,泛化能力却难以保证。为了提高SOTEM数据反演的精度和效率,并兼顾可靠的泛化能力,本文探索了一种融合物理建模与数据驱动的反演方法,将机器学习中监督下降法应用于SOTEM数据反演中。基于监督下降法的SOTEM数据反演分为线下训练和线上预测,线下训练时通过合理的训练集灵活融入先验信息,获得隐含模型特征的平均下降方向,线上预测时借助物理建模函数和训练所得下降方向,在传统反演框架下完成模型参数重建。文中利用层状大地模型构建训练集和测试集,实现了基于监督下降法的SOTEM数据一维反演,并与传统Occam算法进行了对比。结果表明:基于监督下降法的SOTEM反演效率大幅提升,反演精度较高,具有良好的泛化能力。

关键词：瞬变电磁法 SOTEM 快速反演监督下降法机器学习

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Baogutu Porphyry Cu-Mo-Au Deposit,West Junggar,Northwest China Petrology,Alteration,and mineralization

Baogutu Porphyry Cu-Mo-Au Deposit,West Junggar,Northwest Chi...

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中国科学院地质与地球物理研究所第十届(2.10年度)学术年会

作者： PING SHEN,~(1,+) YUANCHAO SHEN,~1 HONGDI PAN,~2.JINGBIN WANG,~(1,3. rui ZHANG,~4 AND YUNXIAO ZHANG~4 1 Key Laboratory of mineral Resources,{2. of Geology and Geophysics,Chinese Academy of Sciences, P.O.Box 982.,Beijing 10002.,China 2.College of Earth Sciences,Chang’an University,Xi’an 710054,China 3.hina Nonferrous Metals Resource Geological Survey,Beijing 100012.China 4 {2. of Geology,Xinjiang Geoexploration Bureau for Nonferrous Metals,Urumqi 83.000,China

Baogutu is the first porphyry Cu-Mo-Au deposit discovered in West Junggar,Xinjiang,*** is part of the Central Asian orogenic *** is associated with a Carboniferous intrusive complex that was em-placed into lower Carboniferous volcano-sedimentary sequences of the Baogutu and Xibeikulasi *** intrusive complex is made up of main stage equigranular to porphyritic diorites and quartz diorites,and minor late stage diorite *** activity occurred at about 3.0} Ma based on U-Pb(SHBIMP) analyses of zircons. The main stage diorites host the bulk of the Cu-Mo-Au mineralization at *** have been overprinted by three alteration assemblages,including an early potassic(biotite) assemblage that occurs in the center of the deposit.A propylitic assemblage surrounds the potassic zone *** of these alteration assemblages have been overprinted locally by phyllic alteration(quartz-sericite-pyrite),which is associated with the highest Cu-Mo *** and hydrothermally cemented breccias have disrupted the main stage *** late stage diorites have undergone moderate potassic alteration and contain weak Cu mineralization. Matrix-rich breccias with very weak mineralization have cut the intrusive complex and disrupted the orebody Re-Os dating of molybdenite indicates that mineralization occurred at about 3.0 Ma.

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嫦娥五号月壤纳米级单质金属铁的形成及生长规律的原位电镜研究

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空间科学与试验学报 2024年第1期1卷 72-77页

作者：李瑞李阳姚伟中国科学院地球化学研究所月球与行星科学研究中心贵阳550081 中国空间技术研究院钱学森空间技术实验室北京100094

纳米级单质金属铁(纳米铁)是无大气保护的地外星体表层长期受太空风化改造的特征产物,是记录月壤形成与演化信息的关键载体,同时也是影响月表反射光谱遥感探测的主要因素。纳米铁的形成机制除了汽化沉积作用之外,近年来在嫦娥五号月壤... 详细信息

纳米级单质金属铁(纳米铁)是无大气保护的地外星体表层长期受太空风化改造的特征产物,是记录月壤形成与演化信息的关键载体,同时也是影响月表反射光谱遥感探测的主要因素。纳米铁的形成机制除了汽化沉积作用之外,近年来在嫦娥五号月壤中还发现了分解反应和歧化反应成因的纳米铁,但其生长规律和形成条件约束目前尚不清楚。因此,本文采用先进的电镜原位加热技术,选取嫦娥五号月壤中的橄榄石、辉石和陨硫铁等含铁矿物作为研究对象,系统性地模拟月壤中含铁成分的物质在亚固相线条件下(湿度不高于800℃)的热改造过程,记录纳米铁在各矿物中的形成方式及生长规律。通过统计纳米铁的粒径尺寸,探讨不同矿物相中纳米铁的粒径分布,为遥感探测光谱数据的解译提供有价值的参考。

关键词：纳米级单质金属铁热改造过程形成机制生长规律

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Authigenic silica in continental lacustrine shale and its hydrocarbon significance

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Petroleum Exploration and Development 2022年第5期49卷 1033-1045页

作者： BAI Bin DAI Chaocheng HOU Xiulin liu Xianyang WANG rui YANG Liang LI Shixiang HE Junling DONG Ruojing PetroChina Research institute of Petroleum Exploration&Development Beijing 100083China School of Earth Sciences East China University of TechnologyNanchang 330000China Exploration and Development Research institute of PetroChina Changqing Oilfield Company Xi'an 710018China PetroChina Daqing Oilfield Company Daqing 163453China Exploration and Development Research institute of PetroChina Jilin Oilfield Company Songyuan 138099China

Taking lake basin shales of the Triassic Yanchang Formation in the Ordos Basin,NW China and the Cretaceous Qingshankou Formation in the Songliao Basin,NE China as research objects,the characteristics and origins of different types of silica in the shales have been studied by means of core observation,thin section identification,cathodoluminescence,X-ray diffraction analysis,scanning electron microscope(SEM),electron probe and rock *** results shows that the origins of silica include felsic mineral dissolution,tuffite devitrification,clay mineral transformation and siliceous mineral *** silica formed by feldspar dissolution commonly appears as spots and veins,with low degree of crystallization,and is largely aqueous opal mineral,with an average Si O2.content of 67.2..Silica formed by devitrification of tuffite mainly occurs in two forms,amorphous silica and authigenic quartz with better crystal *** authigenic silica formed during the transformation of clay minerals is embedded in the clay minerals in the form of micron-scale plates and small flakes,or mixed with clay minerals in a dispersed *** authigenic quartz formed by siliceous mineral metasomatism is in better angular crystal shape,and has an average Si O2.content of 87%.The authigenic siliceous mineral content is positively correlated with the content of terrigenous felsic *** pressure solution of felsic minerals is the main source of authigenic siliceous minerals,followed by the transformation of clay minerals,and the organic matter has some boost on the formation of authigenic *** authigenic siliceous materials of different origins have different geological characteristics and occurrence states from terrigenous quartz,which would affect the storage performance,seepage capacity and fracturing effect of continental *** the organic-rich shale has high silica content,different from terrigenous quartz,authigenic silica in this kind of shale mostly float

关键词： continental lake basin organic-rich shale authigenic quartz Qingshankou Formation Yanchang Formation Ordos Basin Songliao Basin

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Ore-bearing Formations and mineral Resource Prospects of the Peripheral Areas of the Tarim Block

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Acta Geologica Sinica(English Edition) 2000年第3期74卷 473-477页

作者： HE Jurui rui Xinjian GUO Kunyi WU Quanhuai {2. Hongying WANG Futong SUN Chuanmin Nanjing institute of Geology and mineral Resources Geological Survey of China 534 East Zhongshan Rd. Nanjing 210016 Jiangsu Bureau of Geology and mineral Resources Exploration and Development of Xinjiang Urümqi 830000 Xinjiang Chengdu institute of Technology Chengdu 610059 Sichuan 4He Jurui Born in 1946 graduated from Nanjing University in 1970 now a research fellow and director of the Research Centre of mineral Resources at the Nanjing institute of Geology and mineral Resources China Geological Survey Ministry of Land and Resources and member of the Commission on Mineral Deposits Geological Society of China. He has long been engaged in the study of mineral resources genesis of deposits and metallogenic prognosis. Tel: ***.

The tectonic development of the Tarim block has experienced four stages, i. e. Earth's core accretion and block formation in the Precambrian, margin splitting, opening-closing and piecing up in the Early Palaeozoic, rift formation and plate unification in the Late Palaeozoic, and basin-mountain coupling and landform shaping in the Meso-Cenozoic, forming six ore-bearing formations and ore deposits of various genetic types in the Tianshan Mountains, Kunlun Mountains and Altun Mountains. In the peripheral areas of Tarim there are four giant intercontinental metallogenic belts passing through, the Central Tianshan and southwestern Tianshan belts in the former USSR and the Qinling-Qilian-Kunlun and Palaeo-Tethys belts in China. According to the macro-analysis on the nearly one thousand known deposits (occurrences) and geophysical-geochemical anomalies, and the information from reconnaissance in some areas, the region has very good prospects for {2. resources. Some of the metallogenic belts may well become the reserve bases for exploration of {2. resources in China.

关键词： ore-bearing formation metallogenic condition mineral resources Tarim Xinjiang

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Porous Properties of Nano-fibriform Silica from Natural Chrysotile

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Acta Geologica Sinica(English Edition) 2006年第2期80卷 180-184页

作者： WANG Lijuan LU Anhuai WANG Changqiu LI Xuejun ZHENG Xishen ZHAO Dongjun liu rui State Key laboratory of Geological Processes and mineral Resources China University of Geosciences Beijing 100083 School of Earth and Space Science Peking University Beijing 100871 Key Laboratory of Lithosphere Tectonics and Lithoprobing Techology of Ministry of Education China University of Geosciences Beijing 100083 College of Tourism and Geography Jilin Normal University Siping Jilin 136000 Land and Resources Department Changchun Institute of Technology Changchun Jilin 130021

With the TEM and physical gas adsorption techniques, porous properties of nano-ribriform silica （MLD： 92.73.） from natural chrysotile are studied in this paper. The results indicate that porous nano-fibriform silica results from brucite octahedral sheets of nature chrysotile dissolved completely and Si-O tetrahedral sheets collapsed by acid leaching. Its length is at a micron or nanometer scale. There are two types of pores： pores among neighboring fibers and pores in nanoriber. These pores （less than 6.5 nm in diameter, mostly 2.1 nm and 3.8 nm） all belong to mesopores. The pores in fibers consist of those among SiO2.particles, those among aggregates, remnant nanotubes and capillary tubes. Nanoribriform silica proves better than the traditional silica as a carrier of catalyzer and a filler for reinforce rubber and plastics.

关键词： silica nano-ribriform porous properties chrysotile pore

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