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1.
依据沉积体系、断层及其活动期次、不整合特征等分析结果,探讨了辽河东部凹陷古近系输导体系特征及其对油气运移的控制作用。研究结果表明,研究区发育连通砂体、断层和不整合3种输导体系。砂体的连通性与孔渗性、断层两盘岩性配置关系与断层活动性、不整合类型、不整合面上下岩性配置关系是影响输导体系运移效率的主要因素。分析了输导体系对油气运移的控制作用,认为沙一、二段和沙三段的连通砂体是油气横向运移的主要通道,牛青断层和茨东断层是沙一、二段和沙三段油气侧向运移的通道,更是沙一、二段和东营组重要的油源断层;沙一、二段与沙三段之间的不整合是茨榆坨潜山及牛居构造中油气重要的横向运移通道。同时还指出,各类输导体系之间的配置关系决定盆地的整体运移效率,茨东断层和牛青断层在整个输导体系中起重要的瓶颈作用。  相似文献   

2.
对准噶尔盆地西北缘三叠纪末期的压实驱动型成藏动力系统进行了研究。研究结果表明,根据输导格架(连通砂体、不整合面、断裂等)空间上的配置关系和相互组合形式,探讨了压实驱动型成藏动力系统油气输导体系特征,划分出3种输导体系类型,确定了其分布范围。乌-夏地区油气是通过断裂-砂体输导体系进行运移;克拉玛依及其斜坡区域的油气是以连通砂体-不整合面为主要输导体系;百口泉地区、凹陷内部的油气以连通砂体为主要输导体系。该区三叠纪末期油气主要沿夏子街地区砂体-断裂输导体系运移,油气分布与输导体系密切相关。  相似文献   

3.
对准噶尔盆地西北缘三叠纪末期的压实驱动型成藏动力系统进行了研究。研究结果表明 ,根据输导格架(连通砂体、不整合面、断裂等 )空间上的配置关系和相互组合形式 ,探讨了压实驱动型成藏动力系统油气输导体系特征 ,划分出 3种输导体系类型 ,确定了其分布范围。乌夏地区油气是通过断裂砂体输导体系进行运移 ;克拉玛依及其斜坡区域的油气是以连通砂体不整合面为主要输导体系 ;百口泉地区、凹陷内部的油气以连通砂体为主要输导体系。该区三叠纪末期油气主要沿夏子街地区砂体断裂输导体系运移 ,油气分布与输导体系密切相关  相似文献   

4.
综合利用露头、钻井、岩心和地震资料,对断层、不整合、砂体的输导能力进行评价,认为南部乌夏断裂带大断裂及其伴生断裂是研究区的油源断裂,为油气由深部向浅部垂向运移提供了重要通道;八道湾组和清水河组砂岩厚度大,泥质隔层少,横向连通性好,成岩作用弱,物性好,为油气横向运移的通道;不整合面上部的近物源底砾岩,分选差、物性差,对油气的横向输导作用不大.深浅2套断裂、上下2套毯状砂层匹配构成了研究区高效的网毯式输导格架.综合分析构造背景、输导体系、储层岩性-物性与含油性关系,提出了"断-毯-梁"三因素控藏的认识.断裂(油源断层、油藏断层)控制油气聚集层位,毯状输导砂体控制平面分布,鼻状构造背景控制相对聚集,储集层岩性、物性控制富集程度.成藏体系分析,建立了宽缓斜坡带源外沿梁网毯式输导成藏模式,指出毯内断层遮挡的断块圈闭、砂体上倾尖灭岩性圈闭、地层超覆圈闭和次级断裂沟通的毯上砂体构造-岩性圈闭、岩性圈闭为最有利的勘探目标.  相似文献   

5.
摘要:为了确定南堡凹陷东一段油气运移输导通道及其在油气成藏中的控制作用,在油藏精细解剖基础上分析了油气分布与源岩之间的空间匹配关系,开展了南堡凹陷东一段油气输导特征的研究,结果表明:南堡凹陷东一段油气运移输导通道主要有2种,一种是油源断裂的垂向输导通道,将沙三段或沙一段---东三段源岩生成的油气运移至东一段。另一种是砂体的侧向输导通道,将侧向分流至东一段的油气侧向运移至油源断裂附近的正向构造上聚集成藏。油气运移输导通道对油成藏与分布有3个主要的控制作用:①油源断裂垂向输导为东一段油气运移成藏提供了油源;②砂地比大于20%的区域是东一段油气聚集的有利区域;③油源断裂附近的正向构造是为东一段油气聚集的有利部位。  相似文献   

6.
根据油气单一运移通道特征,建立惠民凹陷南部地区油气运移通道组合类型,并系统总结其成藏作用.结果表明:惠民凹陷南部地区主要发育连通砂体、断层及不整合3种油气运移通道,形成了砂体—断层—砂体、砂体—断层—不整合和砂体—不整合3种组合类型;这些组合类型不仅控制了油气运移模式,发育反“Z”字型输导运移模式、阶梯状输导运移模式等,而且控制了油气空间分布特征;砂体—断层—不整合型和砂体—不整合型决定曲堤地区油气具有“多层系分布、油气藏类型多样、运移距离远”的特征;单一的砂体—断层—砂体组合类型决定钱官屯地区油气具有“单层系分布、油气藏类型单一、运移距离近”的特点.  相似文献   

7.
松辽盆地尚家油田油气输导体系及特征   总被引:2,自引:0,他引:2  
分析尚家油田扶余杨大城子及葡萄花油层油气输导体系,发现油田主要存在断裂简单型输导体系及断裂与砂体组合复合型输导体系.空间构造形态控制油气的运移方式,正向构造脊线是三肇凹陷青山口组生成的油气向尚家地区侧向运移的主要通道和聚集场所;输导体系与油气成藏各种控制因素在时间上的合理匹配决定了尚家油田油气的聚集成藏.断层型输导体系输导能力的变化具有周期幕式特征,而断裂与砂体组合输导体系的输导能力主要受控于断裂与砂体的对接模式及砂体自身的输导能力.在尚家油田同向断层与砂体组合模式及反向断层与砂体组合模式中的连续型和错接型组合模式具备侧向的输导能力,而反向断层与砂体组合模式中的离散型不具有侧向输导能力.通过有效通道空间系数的计算及各油层组油显示层段的统计结果证实,尚家油田在扶余油层中扶一油层组砂体侧向输导能力强,杨大城子油层中杨一油层组砂体侧向输导能力强.  相似文献   

8.
油气沿断裂走向运移研究   总被引:3,自引:0,他引:3  
依据断层活动性、断裂走向联井测线资料、断裂带内部结构及其与砂体的匹配关系、油藏分布特征等对惠民凹陷唐庄 肖庄地区油气沿断裂走向运移进行研究,并通过地球化学特征对运移路径的评价结果进行佐证.研究结果表明:断裂是具有一定体积和复杂内部结构的三维地质体,是油气运移的重要通道,油气在断裂纵向、横向和走向上均具有运移分量;油气沿断裂走向运移方式可分为断裂内部输导脊运移和砂体-断裂输导脊运移;断裂活动的不同时期,油气沿断裂走向运移分别以不同的输导方式为主且是逐渐过渡的,断层活动期、静止初期或短暂静止期以断裂内部输导脊运移为主,长期静止时通过砂体 断裂输导脊运移为主.  相似文献   

9.
东营凹陷网毯式油气成藏体系油气运聚探讨   总被引:2,自引:1,他引:2  
运用网毯式油气成藏体系的新理论,对东营凹陷中浅层的输导层及其油气运移特征、所对应的网毯输导体系中的油气成藏过程进行了分析。结果表明,对油气运移起重要作用的输导层主要有连通砂体和断层,连通砂体包括仓储层和其下与之相连的三角洲前缘砂体,断层对油气的输导作用不仅与断层的级别和类型有关,还与断层的幕式活动有关。根据其油气聚集的特征,可将该区油气藏划分成仓储层和聚集网层两大类9种油气藏类型。  相似文献   

10.
油气输导系统及油气运移特征决定了油气藏的形成与分布.从阜东斜坡典型的陆相缓坡特点出发,以中上侏罗统非构造油气藏为主要研究对象,研究了输导系统发育特征及油气运聚模式.指出阜东斜坡带输导系统及油气运聚过程具有3个特征:①阜东斜坡带的油气输导系统由砂体单一输导系统、砂体—断层复合输导系统、砂体—不整合面复合输导系统3种类型组成;②成藏期古构造特征、地层压力特征及古流体势特征表明研究区属于油气有利聚集带,尤其是东南部阜5井区;③研究区内油气运聚模式主要包括阜东斜坡中、北部受砂体—不整合面控制的油气侧向运移聚集模式和阜东斜坡东南部受砂体—断层输导系统及砂体—不整合面输导系统共同控制的油气运聚模式.  相似文献   

11.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

12.
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.  相似文献   

13.
In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.  相似文献   

14.
The non-orthogonal localized molecular orbital(NOLMO)is the most localized representation of electronic degrees of freedom.As such,NOLMOs are thus potentially the most efficient for linear scaling calculations of electronic structures for large systems.However,direct ab initio calculations with NOLMO have not been fully implemented and widely used,partly because of the slow convergence issue in the optimization of NOLMO.We devel-  相似文献   

15.
A hierarchical equations of motion(HEOM)approach is developed for general open quantum systems coupled to fermionic environment.The HEOM method is in principle formally exact,as it resolves nonperturbatively the combined effects of many-body interaction,system-bath dissipation,and non-Markovian memory.In practice,the HEOM approach is highly accurate and efficient for the characterization of strongly correlated quantum impurity sys-  相似文献   

16.
The concept of nanopore analysis, using the pore-forming protein a-hemolysin to detect individual nucleic acids at a single-molecule level, was first proposed in 1996. Over the past two decades, tremendous progress has been made in the nanopore field, and nanopore analysis has become a label-free and high-throughput method for probing bio- molecules and other analytes with single-molecule sensi- tivity, especially holds the promising for "third generation" DNA sequencing. However, challenges still remain in the experimental strategies and the design of whole nanopore-based instruments. Here, we proudly present a special topic dedicated to the topic of "Nanopore Analysis", with 8 reviews/articles providing up to date coverage of the experimental strategies, theoretical calcu- lations and simulations, and instrument design. Reviews and articles on the experimental strategies cover control of DNA partitioning into a nanopore, detection of target DNA, and the advantages of nanopore-based DNA sequencing. The theoretical calculations and simulations discuss the translocation behavior of DNA, and an inte- grated measurement system and data analysis software are presented for instrument design.  相似文献   

17.
1 Rise of studies on climate change's effects on biodiversity
Until the 1980s, climate change and biodiversity were studied as two independent disciplines for more than a century. In 1992, the Ecological Society of America's annual report named climate change, biodiversity, and the sustainable ecological system as the three major global environmental issues of the twenty-first century [1].  相似文献   

18.
<正>1 Introduction Endeavours on learning methods have long occupied the mind spaces of scholars and there have been theories abound on how people learn and in what way organisations can use some of the knowledge gained in the art of learning to maximise human productivity.While the theories by themselves are not solutions to problems,they are steps of inquiry that provide us with interesting perspectives that we can use to extend our knowledge of the dimensions of learning.This paper is an exploratory work on the theories postulated by three notable scholars including Zimmerman  相似文献   

19.
本文我们应用有理混合吸引子条件去证明具非唯一不动点的映射Ciric型的若干不动点定理.结果推广并改进已知的一些结果.  相似文献   

20.
本文主要利用给出的次线性算子分别与BMO函数及Lipschitz函数生成的交换子在变指数L~(p(·))(R~n)空间上的有界性,证明了其在变指数Herz-Morrey空间MK_(q,p(·))~α~((·)),λ(R~n)上的有界性.  相似文献   

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