检索结果-南通市图书馆

Dolomite reservoir formation and diagenesis evolution of the Upper Ediacaran Qigebrak Formation in the Tabei area,Tarim Basin

引用

Science China Earth Sciences 2023年第10期66卷 2311-2331页

作者： Xudong CHEN Qilu XU Fang HAO Yongquan CHEN Yan YI Fangjie HU Xiaoxue WANG jinqiang tian Guangwei WANG National Key Laboratory of Deep Oil and Gas China University of Petroleum(East China)Qingdao266580China School of Geosciences China University of PetroleumQingdao266580China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao266071China Research Institute of Exploration and Development PetroChina Tarim Oilfield CompanyKorla841000China

Ancient dolomite reservoirs play an increasingly important role in deep oil and gas exploration.The mechanism of formation and preservation of dolomite reservoirs is complex,which is always the key issue.With the discovery of deep oil and gas in the Ediacaran dolomites of the world,the upper Ediacaran Qigebrak Formation in the Tabei area has begun to attract attention,but its reservoir space difference and formation mechanism have yet to be clarified.Based on ultra-deep drilling cores and field outcrops in the Tabei area,the lithofacies,reservoir space,and formation mechanism are systematically analyzed by macro to micro,and qualitative to quantitative petrology:(1)The types of dolomite can be divided into five major categories,including microbial dolomite,granular dolomite,residual granular dolomite,crystalline dolomite and karst breccias.(2)The main types of reservoir space are microbial-framework pores,microbial-mold pores,and non-fabric selective dissolution pores.Spongiomicrobialite,karst breccias,and fine-grained dolomite are the dominant reservoir rock types.(3)High-frequency sedimentary cycles and meteoric dissolution are the key factors of reservoir formation.Two sets of large-scale reservoirs are present:the first set is mainly controlled by the supergene karst of the Keping movement,and the second set is mainly controlled by high-frequency sedimentary cycles in the penecontemporaneous period.The reservoirs formed at the shallow burial stage and were preserved until the deep burial stage.(4)The quality of a deep reservoir depends on the geological events that affect the processes of pore reduction and increase.Cementation,compaction and pressure solution are the main destructive diagenetic processes;however,the reservoir space can still be effectively preserved under the influence of constructive diagenetic processes,such as meteoric dissolution and early dolomitization.This research has important theoretical and practical significance for revealing the formation mechanism of upper Ediacaran deep dolomi

关键词： Deep oil and gas Dolomite reservoir Main controlling factors Tarim Basin Qigebrak Formation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Perspectives on the management of synthetic biological and gene edited foods

引用

Biosafety and Health 2020年第4期2卷 193-198页

作者： Rui He Qin Cao Jiejun Chen jinqiang tian China National Center for Biotechnology Development Beijing 100039China

Synthetic biology,gene editing and transgene technologies that involving gene manipulation are widely used in food research and development.In recent decades,China has formulatedmany policies and regulations to govern the safety of genetically modified agricultural organisms.Based on the comparative analysis of technical connotations on synthetic biology,gene editing and transgenes and related risksregarding the safety of food,environment and the management of genetically modified agricultural organisms,this paper puts forward the following suggestions on 1)management of synthetic biological and gene-edited foods(in this paper,“food”refers to“edible agricultural products and food”),2)promoting the gradual process of industrialization on gene-edited and synthetic biological foods through lessons learned from the practice on genetically modified crops,3)speeding up the industrialization of gene-edited foods and prudently promoting the application of synthetic biological foods,4)urgently establishing and updating policies and regulations related to gene-edited and synthetic biological foods,5)unifying the legislation and supervision of synthetic biological,gene-edited and genetically modified foods 6)establishing ethical principles and bottom lines for genetically manipulated foods.

关键词： Synthetic biology Gene editing Transgene Edible agricultural product Food Food safety Environmental safety

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Numerical Simulation Study on the Effect of Horizontal Well Reservoir Stimulation for Gas Hydrate Production

引用

Acta Geologica Sinica(English Edition) 2022年第2期96卷 701-712页

作者： LI Xiaoyang tian Yingying ZHANG Xin SONG Gang ZHAO Ming LIANG jinqiang HUANG Wei MENG Fanle Institute of Exploration Techniques China Geological SurveyLangfangHebei 065000China Directional Drilling Technology Innovation Center China Geological SurveyLangfangHebei 065000China Guangzhou Marine Geological Survey China Geological SurveyGuangzhou 511466China Research Institute of Petroleum Exploration and Development Beijing 100083China

A new gas hydrate reservoir stimulation method of in-situ fracturing with transient heating is proposed, in line with analysis of the technological bottlenecks faced by marine gas hydrate production. This method injects the developed chemical reagents into a hydrate reservoir through hydraulic fracturing, releasing heat during the chemical reaction to increase the hydrate decomposition rate. The chemical reaction product furthermore has a honeycomb structure to support fractures and increase reservoir permeability. Based on the geological model of natural gas hydrate in the South China Sea, three development methods are simulated to evaluate hydrate production capacity, consisting of horizontal well, fractured horizontal well and in-situ fracturing with transient heating well. Compared with the horizontal well, the simulation results show that the cumulative gas production of the fractured horizontal well in one year is 7 times that of the horizontal well, while the cumulative gas production of in-situ fracturing with transient heating well is 12 times that of the horizontal well, which significantly improves daily efficiency and cumulative gas production. In addition, the variation patterns of hydrate saturation and temperature-pressure fields with production time for the three exploitation plans are presented, it being found that three sensitive parameters of fracture conductivity, fracture half-length and fracture number are positively correlated with hydrate production enhancement. Through the simulations, basic data and theoretical support for the optimization of gas hydrate reservoir stimulation scheme has been provided.

关键词： natural gas hydrate horizontal well reservoir stimulation transient heating seepage channel hydraulic fracturing production enhancement technology

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

深部热流体活动背景下氦气的成因来源与运聚机制——以莺歌海盆地乐东底辟区为例

引用

石油勘探与开发 2024年第3期51卷 655-666页

作者：冯子齐郝芳胡林胡高伟张亚震黎阳明王维李昊肖俊杰田金强深层油气全国重点实验室(中国石油大学(华东)) 山东青岛266580 中国石油大学(华东)地球科学与技术学院山东青岛266580 青岛海洋科技中心海洋矿产资源评价与探测技术功能实验室山东青岛266237 中海石油(中国)有限公司海南分公司海口570312

基于地球化学参数及分析数据,应用热守恒方程、质量平衡定律及瑞利分馏模型等方法,通过对莺歌海盆地乐东底辟区的壳源氦气原位产率和外部通量、幔源初始氦浓度及热驱动机制等定量分析,探讨深部热流体活动背景下氦气的成因来源及运聚机... 详细信息

基于地球化学参数及分析数据,应用热守恒方程、质量平衡定律及瑞利分馏模型等方法,通过对莺歌海盆地乐东底辟区的壳源氦气原位产率和外部通量、幔源初始氦浓度及热驱动机制等定量分析,探讨深部热流体活动背景下氦气的成因来源及运聚机制。研究结果表明:(1)乐东底辟区氦气的来源以壳源氦为主,幔源为辅。其中,研究区幔源^(3)He/^(4)He值为(0.002~2.190)×10^(-6),R/R_(a)值为0.01~1.52,测算幔源He贡献占比为0.09%~19.84%,占比较小;而壳源贡献占比则高达80%以上。(2)壳源氦的原位^(4)He产量仅为(4.10~4.25)×10^(-4)cm^(3)/g,外部^(4)He通量则显著高值,为(5.84~9.06)×10^(-2)cm^(3)/g,表明壳源氦气以外部输入为主,推测与地层流体受大气补给以及深部岩石-水相互作用有关。(3)底辟区深部热流体活动显著影响地温场,^(3)He初始质量体积与对应焓的比值(W)为(0.004~0.018)×10^(-11) cm^(3)/J,来自深部地幔的热贡献(XM)为7.63%~36.18%,揭示底辟热流体对幔源^(3)He迁移具有一定的热驱动作用。(4)研究区氦气的初次运移方式以平流为主,二次运移受控于水热脱气和气液分离过程;氦气从深部至浅部的运移过程中,CO_(2)/^(3)He值由1.34×10^(9)升至486×10^(9),指示受到壳幔混合和脱气效应影响,存在CO_(2)规模性析出和^(3)He的明显逸散。在深部热流体影响下,氦气运移聚集机制包括:深部热驱动扩散、平流释放、垂向水热脱气,浅部横向迁移、远离断裂的圈闭聚集,分压平衡、完整密闭的盖层封存等方面。

关键词：深部热流体氦气成因来源运移聚集机制乐东底辟区莺歌海盆地

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Development and Preliminary Evaluation of a Double-cell Ozonesonde

引用

Advances in Atmospheric Sciences 2014年第4期31卷 938-947页

作者： ZHANG jinqiang XUAN Yuejian YAN Xiaolu LIU Mingyuan tian Hongmin XIA Xiang'ao PANG Li ZHENG Xiangdong Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric Physics Chinese Academy of Sciences Chinese Academy of Meteorological Sciences Chengdu University of Information Technology Jiangsu Radio Scientific Institute Co. Ltd

Ozonesondes are widely used to obtain ozone concentration profiles from the surface to the upper atmosphere.A kind of double-cell ozonesonde has been developed at the Institute of Atmospheric Physics （IAP）,Chinese Academy of Sciences （named the ＂IAP ozonesonde＂） based on previous experience over the past 20 years of developing the singlecell GPSO3 ozonesonde.The IAP ozonesonde is of the Electrochemical Concentration Cell （ECC） type.A detailed description of the IAP ozonesonde is firstly provided in the present paper,followed by a presentation of results from a series of launches carried out to evaluate its performance.The analysis involved comparing its observations with measurements from the GPSO3 and ECC ozonesondes （Model type ENSCI-Z） as well as a Brewer spectrophotometer.The results showed that the IAP ozonesonde is a vast improvement over the GPSO3 ozonesonde,able to capture vertical ozone structures very well and in good agreement with ECC ozonesonde measurements.The average difference in the ozone partial pressure between the IAP and ECC ozonesondes was 0.3 mPa from the surface to 2.5 km,close to zero from 2.5 to 9 km and generally less than 1 mPa for layers higher than 9 km.The apparent deviation is likely caused by a decreasing pump flow rate in the IAP ozonesonde which needs further improvement.The total ozone amounts measured by the IAP ozonesonde profiles were highly comparable with the Brewer data with a relative difference of 6％.The development of the IAP ozonesonde and its strong performance will surely accelerate the process of conventional observations of ozone profiles over China in the near future as well as provide more data for ozone research in general.

关键词： ozonesonde development evaluation performance

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Impacts of the atmospheric apparent heat source over the Tibetan Plateau on summertime ozone vertical distributions over Lhasa

引用

Atmospheric and Oceanic Science Letters 2021年第3期14卷 66-71页

作者： Wenjun Liang Zhen Yang Jiali Luo Hongying tian Zhixuan Bai Dan Li Qian Li jinqiang Zhang Haoyue Wang Bian Ba Yang Yang Key Laboratory of Semi-Arid Climate Change and College of Atmospheric Sciences Lanzhou UniversityLanzhouChina Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Department of Atmospheric Science Yunnan UniversityKunmingChina Atmospheric Observation Centre of Lhasa Meteorological Bureau LhasaChina Institute of Arid meteorology China Meteorological AdministrationLanzhouChina

青藏高原(TP)是一个对气候变化敏感的地区,其上空的臭氧分布影响着青藏高原及其周边地区的大气环境.北半球夏季青藏高原上空臭氧柱总量相对较低的现象,及其时空变化受到广泛关注.本研究利用北半球夏季5年的拉萨上空臭氧的气球测量数据,... 详细信息

青藏高原(TP)是一个对气候变化敏感的地区,其上空的臭氧分布影响着青藏高原及其周边地区的大气环境.北半球夏季青藏高原上空臭氧柱总量相对较低的现象,及其时空变化受到广泛关注.本研究利用北半球夏季5年的拉萨上空臭氧的气球测量数据,研究高原上空大气视热源(Q1)对臭氧垂直分布的影响并探讨了该过程的机制.结果表明,当TP上空对流层整体的Q1相对较高时,拉萨上空对流层臭氧浓度下降.大气更强的上升运动伴随着TP主体区域上空的Q1的增大.因此,当夏季Q1较高时,由于近地表低浓度臭氧空气向上输送,拉萨上空的对流层臭氧浓度下降.

关键词：臭氧青藏高原大气视热源上升运动

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Comparison of Clinical and Epidemiological Characteristics of Asymptomatic and Symptomatic SARS-CoV-2 Infection in Children

引用

Virologica Sinica 2020年第6期35卷 803-810页

作者： Jiehao Cai Xiangshi Wang Jun Zhao Yanling Ge Jin Xu He tian Hailing Chang Aimei Xia Jiali Wang jinqiang Zhang Zhongqiu Wei Jingjing Li Chuning Wang Jianshe Wang Qirong Zhu Xiaowen Zhai Mei Zeng Department of Infectious Diseases Children’s Hospital of Fudan UniversityShanghai 201102China Department of Pediatrics Shanghai Public Health Clinical Center of Fudan UniversityShanghai 201102China Department of Clinical Laboratory Children’s Hospital of Fudan UniversityShanghai 201102China Department of Infectious Diseases Xiamen Children’s HospitalChildren’s Hospital of Fudan University Xiamen BranchShanghai 201102China Department of Hematology Children’s Hospital of Fudan UniversityShanghai 201102China

To understand the epidemiological and clinical features of the symptomatic and asymptomatic pediatric cases of COVID-19,we carried out a prospective study in Shanghai during the period of January 19 to April 30,2020.A total of 49 children(mean age 11.5±5.12 years)confirmed with SARS-CoV-2 infection were enrolled in the study,including 11(22.4%)domestic cases and 38(77.6%)imported cases.Nine(81.8%)local cases and 12(31.6%)imported cases had a definitive epidemiological exposure.Twenty-eight(57.1%)were symptomatic and 21(42.9%)were asymptomatic.Neither asymptomatic nor symptomatic cases progressed to severe diseases.The mean duration of viral shedding for SARS-CoV-2 in upper respiratory tract was 14.1±6.4 days in asymptomatic cases and 14.8±8.4 days in symptomatic cases(P>0.05).Forty-five(91.8%)cases had viral RNA detected in stool.The mean duration of viral shedding in stool was 28.1±13.3 days in asymptomatic cases and 30.8±18.6 days in symptomatic participants(P>0.05).Children<7 years shed viral RNA in stool for a longer duration than school-aged children(P<0.05).Forty-three(87.8%)cases had seropositivity for antibodies against SARS-CoV-2 within 1–3 weeks after confirmation with infection.In conclusion,asymptomatic SARS-CoV-2 infection may be common in children in the community during the COVID-19 pandemic wave.Asymptomatic cases shed viral RNA in a similar pattern as symptomatic cases do.It is of particular concern that asymptomatic individuals are potentially seed transmission of SARS-CoV-2 and pose a challenge to disease control.

关键词： SARS-CoV-2 infection Children Epidemiology Viral shedding Seropositivity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

南海珠江口盆地惠州凹陷东南缘远源凸起带油气成因及来源

引用

地学前缘 2022年第5期29卷 176-187页

作者：段威田金强李三忠于强陈瑞雪龙祖烈中国海洋大学海洋高等研究院和海洋地球科学学院/深海圈层与地球系统前沿科学中心/海底科学与探测技术教育部重点实验室山东青岛266100 青岛海洋科学与技术国家实验室海洋矿产资源评价与探测技术功能实验室山东青岛266100 中国石油大学(华东)地球科学与技术学院山东青岛266580 中海油实验中心深圳实验中心广东惠州516000 中海石油(中国)有限公司深圳分公司广东深圳518000

惠州凹陷是中国南海珠江口盆地东部最重要的富生烃凹陷,位于其东南缘的远源凸起带普遍缺失烃源岩地层,距离油源远,是典型的源外远源油气藏,油藏中原油成因及来源尚未明确。通过对惠州凹陷内原油和烃源岩样品进行生物标志化合物、同位素... 详细信息

惠州凹陷是中国南海珠江口盆地东部最重要的富生烃凹陷,位于其东南缘的远源凸起带普遍缺失烃源岩地层,距离油源远,是典型的源外远源油气藏,油藏中原油成因及来源尚未明确。通过对惠州凹陷内原油和烃源岩样品进行生物标志化合物、同位素特征的系统对比,结合对断裂-砂体-不整合运移通道和遮挡条件的分析,应用Pathway软件模拟分析三维油气运移路径,跳出静态模式的禁锢,从动态的角度分析油气成藏过程。本文认为,惠州凹陷东南缘远源凸起带原油主要来源于文昌组烃源岩,其生物标志物主要表现为低C_(19)/C_(23)三环萜烷值(0.25)、低ETR值(0.4)和低双杜松烷T/C_(30)藿烷值(<1)。油气三维运移路径模拟结果显示,油气在惠州凹陷H26洼生成后,在惠-流构造脊控制下沿优势运移路径向东沙隆起方向运移,并在构造脊顶端的远源凸起带L11-1油田聚集成藏。远源凸起带的原油与同一优势运移路径上的其他油田原油样品的生物标志物特征和碳同位素特征具有非常高的相似性。故本文推断,远源凸起带原油主要来自惠州凹陷H26洼陷文昌组中深湖相烃源岩。

关键词：珠江口盆地惠州凹陷远源凸起带生物标志化合物特征油气成因及来源

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

坡积体隧道洞口预加固方案设计及效果评价

引用

现代隧道技术 2022年第S1期59卷 832-843页

作者：刘军军田彦超田茂锦李金强张良傅鹤林中国建筑一局(集团)有限公司中南大学土木工程学院

浅埋隧道洞口的不稳定坡积体使隧道面临着边仰坡失稳或塌方的危险。以罗汉山2号隧道为工程背景，对不采用预加固方案(方案一)、仅采用超前大管棚(方案二)、同时采用地表注浆和超前管棚(方案三)3种洞口加固设计方案进行研究，并利用数值... 详细信息

浅埋隧道洞口的不稳定坡积体使隧道面临着边仰坡失稳或塌方的危险。以罗汉山2号隧道为工程背景，对不采用预加固方案(方案一)、仅采用超前大管棚(方案二)、同时采用地表注浆和超前管棚(方案三)3种洞口加固设计方案进行研究，并利用数值模拟对加固效果进行分析评价，研究加固前后的仰坡稳定性、隧道开挖稳定性及支护结构应力等变化规律。结果表明：对于洞口坡积体仰坡，方案三可将初始安全系数0.76提高至1.14。对于隧道断面稳定性，相比于方案一，方案二可在地表沉降、拱顶下沉方面分别减少30.6%、35.9%的位移值，但在水平收敛及仰拱隆起方面无明显改善作用，而方案三在地表沉降、拱顶下沉、水平收敛及仰拱隆起方面分别降低72.4%、78.2%、60.2%、46.2%。对于锚杆轴力，相比于方案一，方案二和方案三在最大拉应力方面分别降低2.6%、29.9%,在最大压应力方面分别降低14.2%、50%。对于初期支护受力，相比于方案一，方案二和方案三在洞顶最大弯矩值方面分别降低19.6%、38.9%。对于二次衬砌受力，相比于方案一，方案二和方案三在最大压应力方面分别降低26.7%、66.6%。

关键词：隧道坡积体洞口加固方案效果评价仰坡稳定性断面稳定性支护结构受力

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

万米钻探工程的石油地质理论依据与勘探方向

引用

石油实验地质 2023年第5期45卷 973-981页

作者：金晓辉孟庆强孙冬胜田金强梁世友李强中国石化石油勘探开发研究院北京102206 山东科技大学山东青岛266590 中国石油大学(华东) 山东青岛266555 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

油气资源是关系着我国经济发展的重要战略资源。我国陆上主力油田经过50余年开采,油田含水率已超90%。我国石油和天然气对外依存度已分别由2013年的58.9%和29.2%提高到2022年的71.2%和40.2%,已进入石油安全警戒线,影响国家安全。为了寻... 详细信息

油气资源是关系着我国经济发展的重要战略资源。我国陆上主力油田经过50余年开采,油田含水率已超90%。我国石油和天然气对外依存度已分别由2013年的58.9%和29.2%提高到2022年的71.2%和40.2%,已进入石油安全警戒线,影响国家安全。为了寻找更多接替储量,油气勘探向“更深、更复杂”超深层的万米勘探新领域推进,近期国内油公司相继实施了“深海一号”、“深地一号”油气勘探计划,探索实践了智能导钻新技术,推动了万米勘探计划的实施,9 000 m以深的井也发现了油气藏。通过近期的勘探实践,从超深层成烃、成储与成藏机理等方面,论证了万米钻探的石油地质理论依据,指出超深层具有多途径生烃,已经突破120~160℃的生烃门限;“三元控储”理论指出,大于4 500 m的深层、超深层仍发育有效的储集体;多期成藏与保持是超深层规模油气藏发育的有利条件。四川盆地海相深层资源总量约为15.22×10^(12) m~3,其绵长裂陷槽周缘震旦系、川中古隆起周缘龙王庙组、城口海槽南侧米仓山—大巴山地区龙王庙组、川西上古生界深层等具有千亿立方米的资源规模。塔里木海相深层总资源量约为152.62×10~8 t油当量,其中塔北隆起、塔中隆起、麦盖提斜坡的中下奥陶统岩溶以及满加尔西缘中下寒武统台缘带、阿瓦提—顺托果勒中下寒武统台内滩等是具有亿吨级规模的勘探领域。鄂尔多斯盆地西南缘的中新元古界近期也有重要的油气发现。准噶尔盆地准中深洼带、塔里木盆地库车坳陷深层等碎屑岩领域也是万米勘探的重要领域。

关键词：多途径生烃深层成储机理早成藏持续深埋万米勘探领域油气勘探

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：