鲁克沁构造带稠油成藏机制研究

吐哈盆地台南凹陷鲁克沁构造带中的北西走向断层受挤压强烈 ,封闭性好 ;而北东走向断层封闭性差 ,常成为油气运移的良好通道。由于本区断块圈闭的有效性差 ,故不具备大规模聚集稀油的条件 ,但对稠变到一定程度的稠油能起较好的封堵作用。鲁克沁构造带高粘重质油的形成是原油运移和成藏阶段双重稠变作用的结果 ,并且油气的聚集是一个动态的过程。随着原油的逐渐稠变 ,所需要的封堵条件逐渐降低 ,油气的聚集过程才趋于稳定。鲁克沁构造带构造后期变革主要表现在构造幅度的增大 ,而未发生强烈的断裂作用 ,因此 ,前侏罗系油藏得以完好地保存     

利用原油含氮化合物研究油气运移

利用咔唑类非烃化合物作为油气运移示踪剂 ,探讨了松辽盆地新站油田油藏可能的油源和成藏模式。对其原油中吡咯类化合物的丰度、异构体参数的绝对大小与相对变化的研究结果表明 ,该油田原油间运移分馏效应并不显著 ,新站油田原油具有原地与近源性 ,由此推测邻近的齐家—古龙凹陷为其主要的生油灶。根据对吡咯类化合物的分析 ,判断出油气注入点在大安北鼻状构造两条主要断裂间的隆起高部位 ,即英 411及大415一带。油气主要通过断层作垂向运移及侧向扩散聚集。油气的运移、聚集受构造控制 ,首先聚集于构造的高部位 (即北端 ) ,而后作侧向分配。该过程受断裂构造控制 ,两条主要断裂间的油气再次侧向运移方向为北北西—南南东 ,与断层走向一致     

断弯褶皱和断层褶皱中的油气运移聚集行为

断弯褶皱和断层褶皱是前陆冲断带中的两种典型构造形式。运用有关断层中流体运移和封堵理论及方法，结合塔里木盆地库车前陆冲断带的油气勘探实例，对断弯褶皱和断展褶皱中油气运移和聚集行为进行分析讨论。初步认为断展褶皱中的油气运移与聚集能力优于断弯褶皱。具有特征表现在断弯褶皱中是：1）台阶状逆断层具有较强的封堵能力，使得其上、下盘构造被隔离为两个不同的油气运移与聚集体系；2）上盘背斜圈闭中的油气主要来自于褶皱后翼的向斜凹隐；3）背斜圈闭中的储层有可能被轴面变形条带分隔为3个隔离油气舱；在断展褶皱中其特征是1）断层端点的扩展作用过程，就是在断层阀机制作用下，油气沿断层带从下部地层向上部背斜核部运移输送的过程。2）断层上、下盘及背斜两翼可以构成一个统一的油气运移聚集体系。3）背斜储层中的油气往往处于异常流体压力状态。     

断弯褶皱和断展褶皱中的油气运移聚集行为

断弯褶皱和断展褶皱是前陆冲断带中的两种典型构造形式.运用有关断层中流体运移和封堵理论及方法,结合塔里木盆地库车前陆冲断带的油气勘探实例,对断弯褶皱和断展褶皱中油气运移和聚集行为进行分析讨论.初步认为断展褶皱中的油气运移与聚集能力优于断弯褶皱。具体特征表现在断弯褶皱中是:1)台阶状逆断层具有较强的封堵能力,使得其上、下盘构造被隔离为两个不同的油气运移与聚集体系;2)上盘背斜圈闭中的油气主要来自于褶皱后翼的向斜凹陷;3)背斜圈闭中的储层有可能被轴面变形条带分隔为3个隔离油气舱;在断展褶皱中其特征是1)断层端点的扩展作用过程,就是在断层阀机制作用下,油气沿断层带从下部地层向上部背斜核部运移输送的过程.2)断层上、下盘及背斜两翼可以构成一个统一的油气运移聚集体系.3)背斜储层中的油气往往处于异常流体压力状态.     

辽河东部凹陷茨榆坨低位潜山油气成藏研究

根据潜山区域构造、断层活动期、油气生成期、成藏期的配置关系及断层封闭性特点，对辽河东部凹陷茨榆坨低位潜山进行了研究。研究结果表明，茨榆坨潜山为一典型的低位潜山构造带，其构造形态是一平行型背向传递带；储集层为太古界花岗岩，储集空间主要为构造裂缝及溶蚀孔隙，其发育程度受断层控制。采用原油族组成、类异戊二烯烃和萜烷等地化参数，对牛居-长滩洼陷和茨榆坨地区的油气进行了油源对比，并利用生物标志化合物ω(甾烷C29口aααα20S)／ω(20S 20R)和ω(C29ββ)／ω(ββ αα)、正构烷烃主峰碳数、原油物性等指标，对油气运移过程中的运移效应进行了分析，确定潜山的油气来自牛居-长滩洼陷。对油气运移通道条件与运移过程分析认为，茨东、茨西断层控制了油气在潜山内的运移和聚集，断层和不整合面是油气运移的良好通道，油气向茨榆坨潜山的运聚具有氧化型成藏模式。     

辽河东部凹陷茨榆坨低位潜山油气成藏研究

根据潜山区域构造、断层活动期、油气生成期、成藏期的配置关系及断层封闭性特点 ,对辽河东部凹陷茨榆坨低位潜山进行了研究。研究结果表明 ,茨榆坨潜山为一典型的低位潜山构造带 ,其构造形态是一平行型背向传递带 ;储集层为太古界花岗岩 ,储集空间主要为构造裂缝及溶蚀孔隙 ,其发育程度受断层控制。采用原油族组成、类异戊二烯烃和萜烷等地化参数 ,对牛居长滩洼陷和茨榆坨地区的油气进行了油源对比 ,并利用生物标志化合物w(甾烷C2 9ααα2 0S) /w(2 0S +2 0R)和w(C2 9ββ) /w(ββ +αα)、正构烷烃主峰碳数、原油物性等指标 ,对油气运移过程中的运移效应进行了分析 ,确定潜山的油气来自牛居长滩洼陷。对油气运移通道条件与运移过程分析认为 ,茨东、茨西断层控制了油气在潜山内的运移和聚集 ,断层和不整合面是油气运移的良好通道 ,油气向茨榆坨潜山的运聚具有氧化型成藏模式。     

断层封堵性在油气储层研究中应用

断层与油气圈闭密切相关,在油气的形成过程中既可以对油气运移起通道作用,又可以起遮挡作用。断层封堵是断层在形成过程中或在形成以后,由于构造、沉积、成岩等地质因素影响形成的对地层流体的封堵机制。     

鲁克沁地区稀油油藏成藏过程分析

鲁克沁构造带工业稀油油流的获得,打破了鲁克沁地区只有稠油的历史,开辟了新的勘探领域。油源对比表明,鲁克沁构造带东段鲁8和鲁10井的稀油来自台南凹陷石炭系烃源岩;玉东9井稀油来自台南凹陷下侏罗统的煤系源岩。结合流体包裹体均一温度特征和埋藏史,综合分析了稀油成藏期次,认为鲁8和鲁10井的成藏期为在古近纪末-新近纪早期;推测玉东9井成藏期在新近纪早中期。其成藏过程为:古近纪末-新近纪早期,台南凹陷石炭系烃源岩生成的稀油,通过晚燕山-喜山期构造运动形成的断裂向浅层运移,进入三叠系和侏罗系储层,形成稀油油藏;新近纪中新世,台南凹陷下侏罗统煤系烃源岩成熟排烃,生成的煤系油沿三叠系顶部不整合面和断裂向上倾方向的鲁克沁构造带东段进行运移,并进入三叠系砂岩形成稀油油藏。     

永安镇油气田成藏地质条件与油气富集规律

永安镇断块油气田油源充足储层发育、圈闭条件优越，具备形成丰富油气聚集有有利条件。油气分布受断层控制，中、低断块区油气最富集。油气呈阶梯状运移和聚集，因而由低到高断块区依次出现低饱和油藏、高饱和油藏、油气藏和纯气藏完整序列，同时原油逐渐变粘、变重。     

东营凹陷古近系浅层稠油油藏封堵机制

东营凹陷古近系浅层稠油油藏封堵机制认识不清的问题已成为制约下步油气勘探的关键。以永北鼻状构造沙三上亚段稠油为例,根据研究区三维地震、测录井、钻井岩心、岩石薄片、物性测试及试油资料,结合埋藏史及流体包裹体显微荧光分析,对古近系浅层稠油油藏的封堵机制进行研究。结果表明:沙三上亚段稠油主要紧邻不整合面发育,风化黏土层可作为稠油垂向封堵层;扇三角洲平原以泥石流沉积为主,与扇三角洲前缘存在物性分异,对扇三角洲前缘稠油具有侧向物性封堵作用;大气淡水的破坏使早期原油发生稠化,在10000 m Pa·s原油黏度范围之外形成稠油封堵带或沥青带,可以侧向封堵下倾方向的原油;浅层稠油成藏过程划分原始地层沉积、早期原油充注、早期原油稠化、晚期原油充注4个阶段;沙三上亚段稠油油藏发育"两期油气充注、多重封堵机制、油藏分带展布"的成藏模式,早期低熟油发生稠化形成稠油或沥青,晚期成熟的稀油与早期稠油部分混合,由扇三角洲平原向扇三角洲前缘依次展布沥青带、混合带、稀油带。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

Perspherical Approaches for Electrons in Atoms and Charged Excitons in Quantum Wells

Instead of following Fock’s expansion,we solve the Schrodinger equation for some quantum mechanical manybody systems such as electrons in atoms and charged excitons in quantum wells in a similar way in hyperspherical coordinates by expanding the wave functions into orthonormal complete basis sets of the hyperspherical hannonics(HHs)of hyperangles and generalized Laguerre polynomials(GLPs)of the hyperradius.This leads the equation to     

Advances in broadband wireless communications under high-mobility scenarios

Future mobile communication systems aim at providing very high data transmission rates, even in high-mobility scenarios such as high-speed wheel-track trains, maglev trains, highway vehicles, airplanes, guided missiles or spacecraft. A particularly important commercial application is the strong and increasing worldwide demand for high- speed broadband wireless communications （up to 574.8 km/ h test speeds or 380 km/h commercial speeds） in railways, providing data, voice and video services for applications such as onboard entertainment services to passengers, train control, train dispatch, train sensor status handling and sur- veillance. In such high-mobility scenarios, there are a number of communication challenges, including fast hand- over, location updating, high-speed channel modeling, estimation and equalization, anti-Doppler spreading tech- niques, fast power control, and dedicated network architec- ture. Because signal transmission in very high-speed scenarios will inevitably experience serious deterioration, it is imperative to develop key broadband mobile communi- cation techniques for such high-speed vehicles.     

Wuhan University Journal of Natural Sciences TOTAL CONTENTS

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Scale-based spatial data model for GIS

Being the primary media of geographical information and the elementary objects manipulated, almost all of maps adopt the layer-based model to represent geographic information in the existent GIS. However, it is difficult to extend the map represented in layer-based model. Furthermore, in Web-Based GIS, It is slow to transmit the spatial data for map viewing. In this paper, for solving the questions above, we have proposed a new method for representing the spatial data. That is scale-based model. In this model we represent maps in three levels: scale-view, block, and spatial object, and organize the maps in a set of map layers, named Scale-View, which associates some given scales.Lastly, a prototype Web-Based GIS using the proposed spatial data representation is described briefly.     

英文诗歌中的喻类修辞

为了有助于提高英文爱好者的个人情操、文化素养和学习兴趣,以及专业人员对英语学习和研究进行多途径的探索,本文通过一些精选诗歌的引证和分析,着重论述了喻类修辞法在英文诗歌中的运用其及效果。     

Man Is Unable to Change the Miserable Life——Analysis of the Arrangement of Four Characters in The Glass Menagerie

Tennessee Williams is considered as one of the most important American playwrights since World War II.The Glass Menagerie is his first successful drama,which describes a tragic situation of family and means to say that Man is unable to change the miserable life,no matter whatever means he try,This essay focuses on the analysis of the arrangement of the four main characters:Laura.Amanda,Jim and Tom to reveal the theme.Laura is fragile.Amanda is brave.Jim is vital.Tom is sensible.And all of them develop and try the different means to struggle against life,but fail tragically.With the evidence,the paper comes to conclusion naturally that Man is unable to change the miserable life,and he dooms to fail.     

Characterization of root-nodulating bacteria on Retama raetam in arid Tunisian soils

The aim of this study is to investigate the diversity of Retama raetam root-nodule bacteria isolated from arid regions of Tunisia. Twelve isolates, chosen as representative for different 16S rRNA gene patterns, were characterized by 16S rRNA gene sequencing and phenotypic analysis. Isolates were assigned to Sinorhizobium, Rhizobium and Agrobacterium. Symbiotic properties of Sinorhizobium and Rhizobium isolates showed a large diversity in their capacity to infect their host plant and fix atmospheric nitrogen. Strain RK 22 identified as Rhizobium was the most effective isolate.     

An Affordable Accurate Evaluation of the Binding Conformations Predicted by Molecular Docking Studies in Bio-System

正Recently,docking has been widely used to predict the binding-modes of protein-inhibitors,when the crystal complexes structure was absent.Most docking algorithms are able to generate a large number of probable conformations,it,however,is difficult to effectively evaluate these docking poses and identify the most reasonable bindingmode.In the present study,on the basis of the crystallographic data of human 3-hydroxy-3-methylglutaryl coenzyme     

WIMAX与WI-FI技术分析及联合组网

介绍了WiMAX与Wi-Fi两种无线宽带接入技术,并对两者之间的关系及相互之间的影响做了对比及分析,并对WiMAX的关键技术进行了详细说明,最后对两者的联合组网方式做了简单的探讨。