东营洼陷史深100地区沙三中储层沉积相分析

在对油气储层进行精细描述及评价过程中,油气储层在地下的空间展布及其属性的分布特征一直是研究重点,而不同环境成因的砂体其储层性质不同,流体在其中的运动规律不同,开发特征也不同,因此沉积微相研究是精细油藏描述和地质模型研究中的重要内容。本文在了解区域地质背景基础上,利用储层岩石学特征、沉积构造、沉积结构等特征进行沉积相分析,建立了东营洼陷史深100地区沙三中储层沉积相模式,进而划分了其亚相和微相。     

史131地区沙三中储层沉积相分析

在对油气储层进行精细描述及评价过程中,油气储层在地下的空间展布及其属性的分布特征一直是研究重点,而不同环境成因的砂体其储层性质不同,流体在其中的运动规律不同,开发特征也不同,因此沉积微相研究是精细油藏描述和地质模型研究中的重要内容。本文在了解区域地质背景基础上,利用储层岩石学特征、沉积构造、沉积结构等特征进行沉积相分析,建立了东营洼陷史131地区沙三中储层沉积相模式,进而划分了英亚相和微相。     

海外河油田沉积微相与出砂的关系研究

辽河油田东营组为滨浅湖沉积环境,属于鸟足状三角洲沉积模式。依据沉积标志将三角洲前缘亚相划分为水下分流河道、河口砂坝、水下分流间三种沉积微相类型,本文对不同相带储层物性、孔隙结构及相带与油层出砂关系进行了研究。认为东营组沉积微相决定了储层的物性和孔隙结构,进而决定了不同相带油层的出砂规律,其中河道间砂出砂最重,累计出砂与时间呈乘幂关系;其次是河口砂坝,累计出砂与时间呈线性关系;水下分流河道出砂最少,水洗5～10年后,累计出砂量与时间呈对数关系。     

姚店井区长6油层基于测井曲线元的沉积微相识别技术研究

姚店油田位于陕北斜坡构造带东南部,1985年投入开发,自1988年至今已累计上报探明含油面积109.20km2,石油地质储量5573.00×104t.无论在勘探阶段还是在开发阶段,在寻找非构造隐蔽油气藏(鄂尔多斯盆地延长组低孔低渗储层大多属于该类油气藏)时,沉积微相及其沉积环境的研究就显得尤为重要.针对这些问题,完善沉积微相判别技术,提高了测井资料的解释效果,建立起一套实用的、精细的、可持续更新的、符合开发现状的测井沉积微相解释方案,为制定老油田的开发调整方案奠定必要的地质基础.     

苏北盆地海安凹陷沉积演化模式及生储盖组合分析

本文在层序地层学、储层沉积学、地球物理等理论指导下,应用地震、钻井及分析化验等资料,对苏北盆地海安凹陷的沉积充填演化模式、展布规律及其油气成藏特征进行了综合分析。受构造活动、物源供给和水位升降变化等多种因素的影响,海安凹陷先后发育成盆前期广盆相沉积、成盆早期滨海湖盆沉积、成盆中期断陷湖盆沉积及成盆后期河泛平原沉积的四期纵向叠置的沉积体系组合。通过上述基础研究,本文还综合分析了海安凹陷生储盖组合与地层沉积体系的分布配置关系,化分三套有利的生储盖组合,各组合的空间配置关系各异。     

扶余油田沉积微相测井相模式研究

以取心井单井相分析为基础,研究各沉积微相的测井曲线特征,建立起扶余油田沉积微相测井相模式;应用测井相研究扶余油田中区13个小层的沉积微相及储层含油性特征。     

西藏尼玛县阿索东地区早白垩世郎山组沉积环境及沉积微相分析

通过查明郎山组沉积环境及沉积微相分析,为碳酸盐岩沉积环境的研究提供基础依据。选取西藏尼玛县文部乡朵尔杰查东郎山组实测地层剖面,系统镜下显微特征分析。研究区郎山组为一套碳酸盐岩沉积建造,生物丰富,主要为圆笠虫、固着蛤和腹足类等。根据郎山组岩性组合、地球化学特征、沉积环境及显微特征,结合文献、前人研究划分的24个标准微相类型,将其沉积环境划分为开阔台地、台地边缘浅滩、台沟相等三个沉积亚相;内碎屑灰岩、含内碎屑泥晶灰岩、含生物碎屑含内碎屑泥晶灰岩、生物碎屑泥晶灰岩、含燧石结核（条带）泥晶灰岩、泥晶-粉晶灰岩、泥晶灰岩七个沉积微相。     

红岗明水气藏沉积微相研究

利用现有岩芯资料、测井资料和地震资料,对沉积相标志进行综合研究,认为浅层明水沉积属于河流沉积体系,亚相类型属于曲流河沉积模式,主要发育曲流点坝、废弃河道及泛滥平原共三种微相,其中曲流点坝广泛发育,是最重要的储层微相类型。     

利用多学科数据进行沉积相随机模拟研究

以Y油田为例,探讨应用测井、地质和地震资料及标点过程方法进行沉积微相三维建模的方法,并研究了该区砂体的定量结构模式和概率分布.结果表明:Ng2组砂体的结构模式近似于"千层饼"状;东营组砂体的定量结构模式为"迷宫状".综合多学科资料,可以有效的提取三维相建模所需要的地质统计学参数及概率关系,进而建立符合研究区地质特点的沉积相模型,并对储层预测的多解性进行有效评价.     

尚店油田B9块沉积特征研究

B9块与主要物源区有一定的距离,但临近次要物源区。确定物源方向后,根据取芯井的各项资料,通过对岩石特征、岩石颜色、颗粒结构、沉积构造等进行分析研究,确定B9块馆陶组为曲流河相沉积,而东营组则由于气候潮湿、雨水充沛,在斜坡带发育三角洲沉积。在对沉积环境有了认识的基础上,才能够进一步开展区块的精细地质研究,并对区块的下一步开发起到指导作用。     

Low doses of a red wine ingredient figh diabetes in mice

Aresearch group led by Prof. ZHAI Qiwei from the Institute for Nutritional Sciences under the CAS Shanghai Institutes for Biological Sciences has discovered that even relatively low doses of resveratrol--a chemical found in the skins of red grapes and in red wine--can improve the sensitivity of mice to the hormone insulin, according to a report in the October,2007 issue of Cell Metabolism. As insulin resistance is often characterized as the most critical factor contributing to the development of Type 2 diabetes, the findings“provide a potential new therapeutic approach for preventing or treating” both conditions, the researchers said.     

Students' Reactions to the Introduction of Videoconferencing for Classroom Instruction

This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors.     

Cooler temperatures inductive to locust outbreaks

Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007.     

Exploring Multiplexity: Social Network Structures in a Computer-Supported Distance Learning Class

A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction.     

Molecular motor assembly of a biomimetic system

Active biological molecules and functional structures can be fabricated into a bio-mimetic system by using molecular assembly method. Such materials can be used for the drug delivery, disease diagnosis and therapy, and new nanodevice construction.     

To serve and promote science development via innovation

CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing.     

Tracing the origin and early radiation of birds——Paleornithologist ZHOU Zhonghe

With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants."     

The Role of Intermediating Institutions in the Diffusion of Electronic Data Interchange (EDI): How Industry Associations Intervened in Denmark, Finland, and Hong Kong

Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies.     

The Information Environment and Universal Service

This essay focuses on universal service and the Internet as means to support social and political participation. The emphasis on access to telecommunications systems in conventional approaches to universal service is contrasted with access to content. A model of the information environment is described that accounts for the roles of content and conduit, both of which are necessary conditions to achieve true access. A method is outlined for employing information indicators to observe or measure the information environment.     

How Electronic Publishers are Protecting Against Piracy: Doubts About Technical Systems of Protection

The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means.