检索结果-南通市图书馆

Geoscience Frontiers 2013年第6期4卷 779-786页

作者： xiaoyue gao Luofu Liu Zhenxue Jiang Xiaoqing Shang Guodong Liu State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum (Beijing) Basin and Reservoir Research Center China University of Petroleum (Beijing)

The unconformity surface at the bottom of the Paleogene is one of the most important migration pathways in the Sikeshu Sag of the Junggar Basin,which consists of three layers：upper coarse clastic rock,lower weathering crust and leached *** upper coarse clastic rock is characterized by higher density and lower SDT and gamma-ray logging parameters,while the lower weathering crust displays opposite *** transport coefficient of the unconformity surface is controlled by its position in respect to the basal sandstone; it is higher in the ramp region but lower in the adjacent uplifted and sag *** content of saturated hydrocarbons increases with the decrease of the content of nonhydrocarbons and *** content of benzo[c] carbazole decreases as the content of benzo[a]carbazole and [alkyl carbazole]/[alkyl ＋ benzo carbazole] *** suggests that the unconformity surface is an efficient medium for the transportation of hydrocarbons.

关键词： Transportation and accumulation of hydrocarbons Lithology Rock density SDT and gamma-ray logging Benzo carbazole Alkyl carbazole

Gas Occurrence and Accumulation Characteristics of Cambrian–Ordovician Shales in the Tarim Basin, Northwest China

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2018年第5期92卷 1948-1958页

作者： LIU Luofu WANG Ying CHEN Yiting SHEN Baojian gao xiaoyue State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum (Beijing) Basin and Reservoir Research Center China University of Petroleum (Beijing) Wuxi Research Institute of Petroleum Geology SINOPEC

The Tarim Basin is located in northwestern China and is the biggest basin in China with huge oil and gas resources. Especially the Lower to Middle Cambrian and Middle to Upper Ordovician possess the major marine source rocks in the Tarim Basin and have large shale gas resource potential. The Cambrian–Ordovician shales were mainly deposited in basin–slope facies with thicknesses between 30–180 m. For shales buried shallower than 4500 m, there is high organic matter abundance with TOC（total organic carbon） mainly between 1.0% and 6.0%, favorable organic matter of Type I and Type II, and high thermal maturity with RoE as 1.3%–2.75%. The mineral composition of these Cambrian–Ordovician shale samples is mainly quartz and carbonate minerals while the clay minerals content is mostly lower than 30%, because these samples include siliceous and calcareous shale and marlstone. The Cambrian and Ordovician shales are compacted with mean porosity of 4% and 3%, permeability of 0.0003×10^（-3）–0.09×10^（-3） μm^2 and 0.0002×10^（-3）–0.11×10^（-3） μm^2, and density of 2.30 g/m^3 and 2.55 g/m^3, respectively. The pores in the shale samples show good connectivity and are mainly mesopore in size. Different genetic types of pores can be observed such as intercrystal, intergranular, dissolved, organic matter and shrinkage joint. The reservoir bed properties are controlled by mineral composition and diagenesis. The maximum adsorption amount to methane of these shales is 1.15–7.36 cm^3/g, with main affecting factors being organic matter abundance, porosity and thermal maturity. The accumulation characteristics of natural gas within these shales are jointly controlled by sedimentation, diagenesis, hydrocarbon generation conditions, reservoir bed properties and the occurrence process of natural gas. The natural gas underwent short-distance migration and accumulation, in-place accumulation in the early stage, and adjustment and modification in the later stage. Finally, the Yulin（well Y1） and Tazho

关键词： shale gas occurrence accumulation Cambrian Ordovician Tarim Basin Urumqi China

The characteristics of unconformity surface at the bottom of the Paleogene and its significance in hydrocarbon migration in the Sikeshu Sag of the Junggar Basin, Northwest China

在线全文

学校读者我要写书评

暂无评论

Chinese Journal Of Geochemistry 2013年第2期32卷 181-190页

作者： gao xiaoyue LIU Luofu WANG Ying JIANG Zhenxue LIU Guodong SHANG Xiaoqing State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum (Beijing) Basin and Reservoir Research Center China University of Petroleum (Beijing)

The unconformity surface at the bottom of the Paleogene, located in the Sikeshu Sag of the Junggar Basin, Northwest China, is one of the most important hydrocarbon migration pathways and characterized by 3 layers of upper coarse clastic rock, lower weathering crust and leached zone. The upper coarse clastic rock displays features of higher density, lower SDT and gamma-ray logging while the weathering crust in the lower part displays opposite features. The formation water is of NaHCO 3 type but at lower mineralization degree. The QGF indices are generally between 2.19 and 3.77 and the GOI parameters vary from 1% to 5%. From the southeast to the northwest of the sag, the content of saturated hydrocarbon increases from 30.81% to 53.74% while that of non-hydrocarbon and asphaltene decreases. The Pr/nC 17 decreases from 0.65 to 0.47 while the Ph/nC 18 decreases from 0.66 to 0.27, and the content of benzo[c] carbazole declines while the benzo[a] carbazole amount and (alkyl carbazole)/(alkyl+benzo carbazole) ratio both increase. These revealed that the hydrocarbons migrated from the sag to the ramp region along the unconformity surface.

关键词：中国西北地区油气运移通道准噶尔盆地不整合面古近系凹陷底部苯并咔唑

再生混凝土抗冻性能试验研究及孔隙分布变化分析

在线全文

学校读者我要写书评

暂无评论

材料导报 2021年第16期35卷 16028-16034页

作者：邓祥辉高晓悦王睿赵崇基西安工业大学建筑工程学院西安710021 铁科院(深圳)研究设计院有限公司深圳518057 深圳城市轨道交通减振降噪工程实验室深圳518057

再生混凝土抗冻耐久性与混凝土结构内部孔隙分布变化密切相关。为研究再生混凝土结构内部孔隙分布与抗冻耐久性的定量关系,选取再生粗骨料取代率为0%、25%、50%、75%、100%的普通再生混凝土和引气再生混凝土作为研究对象,进行冻融循环... 详细信息

再生混凝土抗冻耐久性与混凝土结构内部孔隙分布变化密切相关。为研究再生混凝土结构内部孔隙分布与抗冻耐久性的定量关系,选取再生粗骨料取代率为0%、25%、50%、75%、100%的普通再生混凝土和引气再生混凝土作为研究对象,进行冻融循环试验和核磁共振试验,测试混凝土试件质量、动弹性模量、抗折强度以及结构内部孔隙分布情况。结果表明:在冻融循环试验中,加入引气剂可有效改善试件内部的中孔(0.01~0.05μm)和大孔(0.05~1μm)的占比,从而提高其抗冻性能;在10种不同配比中,引气天然骨料混凝土的抗冻性能最佳,其次是再生粗骨料替代率为50%的引气再生混凝土,其内部孔隙结构相比再生粗骨料替代率为25%、75%和100%的引气再生混凝土更加稳定;再生混凝土冻融循环后的抗折强度变化与结构内部孔隙的分布和占比密切相关。

关键词：再生混凝土冻融循环核磁共振孔隙分布抗折强度

术前雾化吸入对胸外科患者术后肺部并发症影响的Meta分析

在线全文

学校读者我要写书评

暂无评论

解放军护理杂志 2018年第10期35卷 9-14页

作者：高小月侯黎莉同济大学附属上海市肺科医院肿瘤科上海200433 上海交通大学医学院附属第九人民医院护理部上海200011

目的评价术前雾化吸入对胸外科患者术后肺部并发症发生率的影响。方法 2017年1月,计算机检索万方数据库、维普中文期刊全文数据库、中国期刊全文数据库(China National Knowledge Infrastructure,CNKI)、中国生物医学文献数据库(China B... 详细信息

目的评价术前雾化吸入对胸外科患者术后肺部并发症发生率的影响。方法 2017年1月,计算机检索万方数据库、维普中文期刊全文数据库、中国期刊全文数据库(China National Knowledge Infrastructure,CNKI)、中国生物医学文献数据库(China Biology Medicine disc,CBMdisc)、PubMed、Web of Science、Cochrane Library等数据库,查找关于术前雾化吸入对胸外科患者术后肺部并发症影响的随机对照研究(randomized controlled trials,RCT),检索时限均从建库至2016年12月。纳入的参考文献由2名研究人员独立进行质量评价并提取资料,采用RevMan 5.3软件进行Meta分析。结果最终纳入9篇文献,共804例研究对象。Meta分析结果显示,术前雾化吸入可减少胸外科患者术后肺不张的发生率[RR=0.28,95%CI(0.15,0.51),P<0.01]、肺部感染的发生率[RR=0.25,95%CI(0.13,0.48),P<0.01]。结论术前雾化吸入能够降低胸外科手术患者术后肺不张等肺部并发症的发生率。

关键词：术前雾化吸入胸外科手术肺部并发症肺不张

在线全文

学校读者我要写书评

暂无评论

伊犁盆地阿吾拉勒山西缘二叠系沉积特征研究

中国矿业大学学报 2015年第5期44卷 877-884页

作者：马文礼刘洛夫宋博高小跃邓思哲中国石油大学油气资源与探测国家重点实验室北京102249 中国石油大学盆地与油藏研究中心北京102249 中国地质调查局西安地质调查中心陕西西安710054

二叠系是伊犁盆地目前主要的勘探目标之一,伊犁盆地二叠系铁木里克组是主要的烃源岩层位,深入研究伊犁盆地二叠纪沉积特征对指导油气勘探具有重要意义.以阿吾拉勒山西缘野外实测剖面为基础,结合前人成果,通过岩性和岩石组合分析、沉积... 详细信息

二叠系是伊犁盆地目前主要的勘探目标之一,伊犁盆地二叠系铁木里克组是主要的烃源岩层位,深入研究伊犁盆地二叠纪沉积特征对指导油气勘探具有重要意义.以阿吾拉勒山西缘野外实测剖面为基础,结合前人成果,通过岩性和岩石组合分析、沉积相分析,研究了该地区二叠纪沉积环境演化过程,明确了该地区铁木里克组暗色泥岩的形成环境.结果表明:阿吾拉勒山西缘二叠纪发育滨浅湖、辫状河三角洲平原、辫状河、冲积扇、火山喷发5种沉积相,整体属于陆相湖盆边缘环境;受控于区域大地构造演化,研究区在二叠纪发生过2次湖侵—湖退,沉积环境经历了冲积扇—辫状河—滨浅湖—辫状河三角洲平原—滨浅湖—辫状河—辫状河三角洲平原—辫状河—冲积扇的演化过程,于三叠纪初演变为物源区;研究区铁木里克组暗色泥岩形成于沼泽环境.

关键词：沉积相露头二叠系阿吾拉勒山伊犁盆地

互联网金融发展、内部控制质量与中小企业融资约束

在线全文

学校读者我要写书评

暂无评论

财会通讯（下） 2019年第10期 120-124页

作者：胡振兴郜晓月王豪河南理工大学财经学院

基于欧拉方程投资模型构建'投资—现金流'敏感性模型,利用PCA构建互联网金融发展指数,选取2009—2016年中小板上市公司作为样本,考察互联网金融的发展对中小企业融资约束的影响,并在此基础上进一步研究了货币宽松程度、内部控制质量对... 详细信息

基于欧拉方程投资模型构建'投资—现金流'敏感性模型,利用PCA构建互联网金融发展指数,选取2009—2016年中小板上市公司作为样本,考察互联网金融的发展对中小企业融资约束的影响,并在此基础上进一步研究了货币宽松程度、内部控制质量对中小企业融资约束的影响。实证结果分析表明:互联网金融发展在一定程度上可以缓解中小企业融资约束;对于内部控制质量较高的中小企业而言,互联网金融对于缓解其融资约束的效果更为显著。该研究的结果,对于加快互联网金融发展、提升内部控制质量和缓解中小企业融资约束,具有一定的现实意义。

关键词：互联网金融发展内部控制质量中小企业融资约束欧拉方程投资—现金流敏感性

The Main Control Factors for Shale Gas Accumulation and Exploration Problems in Shale Gas of South China

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2015年第A1期89卷 250-250页

作者： JIANG Zhenxue TANG Xianglu LI Zhuo JI Wenming gao xiaoyue YUAN Yuan WANG Pengfei State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum Beijing 102249 Institute of Unconventional Natural Gas Research China University of Petroleum Beijing 102249

The shale gas exploration in China has achieved remarkable profits, and four national shale gas demonstration zones （Fuling Jiaoshiba, Changning - Weiyuan, Zhaotong, and Yanchang） have been established. Recently, nearly 400 drilling wells have been accomplished, including 143 vertical wells and 130 horizontal wells. But the shale gas production varies widely, as the main control factors of enrichment conditions and accumulation mechanism of shale gas is still not enough studied, which fundamentally restricts the shale gas exploration and development process.

关键词：

2015年2月天津市大气颗粒物数浓度变化及其与气象条件的关系

在线全文

学校读者我要写书评

暂无评论

环境工程学报 2017年第7期11卷 4125-4132页

作者：杨志文元洁吴琳高晓月毛洪钧南开大学环境科学与工程学院天津300071 天津市环境监测中心天津300191

2015年2月16—28日,采用APS-3321空气动力学粒径谱仪在天津市环境监测中心站连续监测0.5~10μm间不同粒径大气颗粒物数浓度,并同步记录气象参数,研究了大气颗粒物的数浓度变化和粒径分布特征,运用Spearman统计分析方法初步探讨了气象因... 详细信息

2015年2月16—28日,采用APS-3321空气动力学粒径谱仪在天津市环境监测中心站连续监测0.5~10μm间不同粒径大气颗粒物数浓度,并同步记录气象参数,研究了大气颗粒物的数浓度变化和粒径分布特征,运用Spearman统计分析方法初步探讨了气象因素对大气颗粒物数浓度的影响。结果表明,该地区大气颗粒物5 min平均数浓度为285个·cm^(-3),其中0.5~1.0μm粒径颗粒物对总粒子数浓度贡献较大,约占96.7%。观测期间共出现颗粒物数浓度显著增高的9个污染事件,不同粒径中污染事件颗粒物数浓度最大值的主导气象因素不同:对于0.5~1.0μm,其与相对湿度呈明显的正相关性;对于1.0~2.5μm,其与气象因素无明显相关性;对于2.5~10μm,其与相对湿度呈明显负相关性、与风速呈明显正相关性。颗粒物数浓度受气象条件影响较大,其中相对湿度影响最为显著,当相对湿度小于70%时,颗粒物数浓度随着湿度的增加而增加;当相对湿度大于70%时,颗粒物数浓度随着湿度的增加而减少。此外,烟花爆竹燃放对颗粒物数浓度短暂上升贡献突出,主要集中在0.5~1.0μm粒径的亚微米颗粒物。

关键词：颗粒物数浓度粒径分布气象因素烟花爆竹

Main Factors Control the Shale Gas Accumulation in the Yudongnan Area,Southwest China

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2015年第A1期89卷 263-263页

作者： LI Zhuo JIANG Zhenxue LIU Luofu gao xiaoyue JI Wenming XIONG Fengyang SONG Yan State Key Laboratory of Petroleum Resources andProspecting Beijing 102249 Unconventional Natural Gas Research Institute China University of Petroleum Beijing 102249

Shale gas exploration has made great progresses in ancient marine shales in southern china, especially in the Jiaoshiba-Fuling area. However, rare succeed exploration and production cases outside Sichuan basin were reported. The main reason for this issue can be attributed to the misunderstandings of the mechanisms of shale gas accumulation and key controlling factors.

关键词：