江汉盆地潜江凹陷新沟嘴组致密油成藏模式与分布规律

通过岩心观察、薄片鉴定、扫描电镜、X-衍射等技术,结合测井资料,对江汉盆地潜江凹陷新沟嘴组致密油成藏特点进行分析,建立"盐韵律"成藏模式,并总结成藏主控因素及分布规律。结果表明:江汉盆地新沟嘴组下段Ⅱ油组(新下Ⅱ油组)具有源储互层发育特征,具备形成致密油的良好条件;致密油藏具有储层厚度小,中孔特低渗,烃源岩低熟,油藏含油饱和度低的特点;Ⅳ级盐韵律是油气成藏的基本运聚单元和成因单元,其形成时的水体深度、盐度及蒸发作用强弱对成藏具有明显的控制作用;油层纵向上分布于Ⅲ级盐韵律咸化—淡化转换面两侧的中盐段,平面上分布于盐湖沉积区。     

鄂尔多斯盆地西南缘彬长地区延长组长7致密油成藏条件及控制因素

通过对鄂尔多斯盆地西南缘彬长地区烃源岩、储层特征、生储盖组合以及运移动力等综合地质条件进行分析,总结延长组长7致密油油藏分布特征及主控因素。结果表明,彬长地区延长组长7烃源岩以优质张家滩油页岩为主,有利储集体主要为三角洲前缘的水下分流河道砂岩,储层物性差,孔隙度平均为8.8%,渗透率平均为0.22×10-3μm2,属于致密砂岩储层。半深湖—深湖沉积环境导致长7储层横向连通性较差,纵向泥岩夹层多,石油在过剩压力作用下以垂向或侧向短距离运移为主,当封盖能力足够时,便在物性较好的致密储层中成藏。鄂尔多斯盆地延长组长7自生自储式油藏的形成和分布主要受烃源岩、储层和盖层三大因素控制,烃源岩的发育控制油藏展布,储层物性及砂体展布和源储接触关系控制着油藏分布层位,而封盖能力对长7致密油藏的分布规模起决定作用。     

三塘湖盆地石炭系埋藏溶蚀型凝灰岩致密油成藏特征

凝灰岩致密油藏作为一种特殊的油藏类型,已受到高度关注,但前人对埋藏成岩阶段形成的凝灰岩致密油藏研究很少。本文通过对三塘湖盆地石炭系哈尔加乌组埋藏溶蚀型凝灰岩致密油成藏条件的研究,明确了成藏主控因素,并建立了成藏模式。研究表明：哈尔加乌组烃源岩有机质丰度较高,有机质类型较好,并处于成熟演化阶段,油源对比表明埋藏溶蚀型凝灰岩油藏中原油来自哈尔加乌组内部烃源岩;埋藏溶蚀型凝灰岩物性较好,溶蚀孔隙为上部烃源岩在演化过程中产生的大量有机酸对储层的溶蚀作用而形成;埋藏溶蚀型凝灰岩油藏的形成主要受哈尔加乌组成熟烃源岩分布、卡拉岗组大套烃源岩下部物性较好的凝灰岩储层及圈闭条件的控制,形成“下部成熟烃源岩供烃、上部有机酸溶蚀形成物性较好凝灰岩储层及有效圈闭存储”多项成藏条件有利配置下的成藏模式。本文研究将对其他地区埋藏溶蚀型凝灰岩油藏的分布与预测提供借鉴。     

陆相致密油藏差异化含油特征与控制因素

探讨陆相致密油藏差异化含油特征与控制因素可支撑致密油藏储层评价、深化致密油藏储层认识。通过致密油藏宏观分布、岩芯观察、油藏条件、单井产能4个方面对比分析,揭示海相、陆相致密油藏均普遍存在差异化含油现象,陆相致密油藏差异化含油具有“分布散、范围宽、差异大”的特点;通过岩芯描述、薄片鉴定、测井解释、开发区解剖等方式,阐明了准噶尔盆地吉木萨尔凹陷芦草沟组致密油藏不同尺度条件下均表现出强烈的差异化含油特性,在井位优选、井轨迹和压裂改造设计中正越来越受到重视;进行了致密油藏差异化含油控制因素探讨,提出沉积相、成岩相、断裂体系及源储配置等因素决定了致密油藏含油性的宏观差异化分布,储层层理、物性、孔隙结构、微裂缝等因素控制了致密油藏储层局部含油性差异化分布。     

富县-甘泉地区长7长8油层组成藏控制因素研究

通过对富县-甘泉地区延长组长7、长8油层组油气成藏条件分析,认为本区烃源岩为延长组长7和长9油层组的优质烃源岩;长7、长8油层组砂体整体上砂体呈北西-南东向展布,为低孔-特低渗储层;长7油层组源岩与长7和长8油层组储层直接接触,源储大面积相邻分布,整体上形成了源储紧密接触的"三明治"式源储结构特征,离源岩越近的层位,含油饱和度相对越高;富县-甘泉地区延长组的油气富集的主控因素为有效烃源岩排烃强度控制了石油的分布,有利的源储结构促进了烃源岩的排烃及其对致密砂岩的充注程度,垂向叠置砂体与广泛发育的构造裂缝构成了石油向致密砂岩充注与运移的有利垂向输导通道,持续存在的源储剩余压差与储层渗透率耦合控制了石油的富集程度。     

二连盆地致密油形成特征及勘探潜力

二连盆地普遍发育低孔、低渗透性储层,位于洼槽区及构造翼部的下白垩统巴彦花群腾格尔组下段与巴彦花 群阿尔善组顶部特殊岩性段与致密砂砾岩段储层尤为致密,空气渗透率一般小于0.5 mD。巴彦花群腾格尔组下段与 巴彦花群阿尔善组顶部发育含云灰质为特征的特殊岩性段和湖相黏土质泥岩两类优质烃源岩,致密储层与优质烃源 岩构成源储一体或互层状分布,利于油气就近运移成藏。致密储层段孔喉结构复杂,呈低产低压特征;特殊岩性段白 云石含量较高、脆性大,含油性及原油物性较好,利于储层压裂改造。虽然单个凹陷分布规模较小,但总体规模较大, 资源预测结果表明,致密油资源量达到近10×108 t。在今后较长时间内,勘探工作应为致密油与岩性油藏并重。     

鄂东南通山半坑志留系古油藏成藏解剖

鄂东南通山半坑志留系古油藏具有复杂叠合盆地的成藏特征,油源对比表明,古油藏具有混源特征,油源主要来自下寒武烃源岩,部分来自上震旦统和下志留统烃源岩.对半坑古油藏成藏演化分析发现,印支期及以前的构造演化控制原生油气藏的形成与分布,而燕山运动则为古油藏破坏的主要因素.结合研究区的构造演化、埋藏和生排烃史特征探讨了通山古油藏成藏模式,认为古隆起与岩性岩相带控制原生油藏→次生构造油气藏→原油热裂解古气藏→现今残余固体沥青矿藏的形成.     

哈山地区烃源岩地球化学特征及油源对比

准噶尔盆地哈山地区发育有石炭系、二叠系、侏罗系等多套优质烃源岩,这使得确定各套含油层系原油的来源和油气成藏模式存在一定困难。在对研究区烃源岩评价的基础上,对烃源岩和原油样品的生物标志化合物特征进行对比分析,确定主要的烃源层。油源对比分析结果表明,侏罗系储层中原油来源分为两类:第Ⅰ类来源于二叠系烃源岩;第Ⅱ类主要来源于侏罗系暗色泥岩,可能混有少量来自二叠系的烃源油。二叠系储层中原油来源于二叠系本身烃源岩;石炭系储层中原油也来源于二叠系烃源岩。     

二叠盆地Wolfcamp统致密油成藏特征及主控因素

在分析二叠盆地Wolfcamp统构造、沉积特征的基础上，通过烃源岩、储层等方面的系统研究，深入剖析了Wolfcamp统致密油成藏条件，探讨了致密油成藏主控因素。研究结果表明，Wolfcamp统具有致密油富集的优良地质条件，发育一套优质烃源岩，以硅质泥岩和钙质泥岩为主，并和储层呈现"下源上储、源储互层"的优良配置关系。致密油产层和产能分布主要受烃源岩、储层和源储配置控制。烃源岩特征为最核心的控制因素，它决定了资源丰度；储层特征和优良的源储配置关系决定了致密油主要产层、油气运移方式和排烃效率，是致密油富集的关键因素。     

车拐斜坡区三叠系百口泉组油气成藏条件研究

针对车拐斜坡区三叠系百口泉组成藏条件认识模糊的问题,以钻测井、地震、微观测试分析为手段,对百口泉组油藏的烃源岩、储层、盖层、运移条件以及圈闭类型进行分析.结果表明,车拐斜坡区百口泉组油藏存在多套烃源岩为其供烃,以风城组和下乌尔禾组为主;存在物性较好的(水下)分流河道砂岩储层,同百三段发育的大套泥岩形成的盖层相互匹配,组...     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that