川东高陡构造石炭系储层预测试验

针对川东地区高陡构造,石炭系储层埋藏很深,地震反射波信噪比低等特点。本文提出了一套利用地震资料进行气藏预测的方法,并用此方法对二条剖面进行了学习和预测的试验,获得了较好的效果。其中特别提出了模型法归位计界,经钻探检验,对于构造归位和预测点归位两类问题的计算,均取得很好的效果。     

四川盆地磨溪─龙女寺地区寒武系洗象池组地震地层学研究

利用地震波的振幅连续性和速度三个参数,在常规地震剖面和Ｇ－ＬＯＧ剖面上对磨溪─龙女寺地区寒武系洗象池地层进行微地震相的划分,结合测并、地质、微地震相和模型正演资料的综合分析,提出了该地区风化壳上含油气有利的微地震相及最有利的含油气地区。进-步充实了乐山─龙女寺古隆起下古生界风化壳地区的地震地层学研究。     

利用合成地震波振幅预测煤层厚度及其方法研究

为了更精确预测煤层厚度变化,分析了波阻抗反演与煤厚的相关性,对测井资料和反演后的合成地震波振幅进行线性回归,建立了原生煤的正演模型.将该模型应用到非井点的地震属性上,利用同位协同克里金方法实现了对淮北桃园矿区煤层厚度的预测,结果与已知钻孔探测资料十分吻合,证明了利用地震振幅预测煤厚以及分类正演模型是可行的.     

利用正演地层模拟预测台地边缘鲕滩储层的分布

本文以川东北Y地区下三叠统飞仙关组地震层序2为例,在碳酸盐岩沉积学和层序地层学理论指导下,开展碳酸盐岩正演地层模拟研究,再现该层序的发育过程,预测台地边缘鲕滩储层的分布,并对地震层序解释结果进行检验。模拟考虑了碳酸盐生产率、侵蚀、搬运、沉积等参数的变化,模拟所需用的初始地形和相对海平面变化根据地震层序解释结果确定。模拟的地层结构剖面与实际地震剖面具有较好的相似性,模拟的沉积相分布与实际钻井结果能较好地对比。本文的研究表明,正演地层模拟为地震层序解释提供一种有效的检验手段,并可对碳酸盐储层相带分布进行预测。     

基于小波包变换的薄互层识别方法应用研究

薄互储层是我国主要储集油气的地质结构,应用小波包变换的方法对薄互层的识别和层厚度预测研究,提出了一种新的研究薄互层识别的方法。建立楔形模型以及复杂的含有薄互层的模型,并开展了地震正演模拟,根据小波包分解重构理论,应用小波包变换的方法得到合成地震剖面和偏移剖面,实际地震数据结合井信息的标定,对薄互储层的划分和厚度的预测进行了较为详细的研究。模型和实际资料算例结果均表明,小波包变换方法在识别薄互储层中可以突破四分之一波长的限制。     

地震正演模型在周矶油田潜41油组储层预测中的应用

本文通过对周矶油田潜41油组进行储层分析,使用有限差分法进行楔状模型正演,研究区地质模型正演结果证实了振幅属性、频率属性与砂岩之间的敏感关系.利用井点和地质模型的约束,根据振幅特征对地震剖面进行追踪,然后通过地震属性分析等步骤,减少了储层预测的多解性.     

探地雷达的正演模拟及有限差分波动方程偏移处理

利用麦克斯韦方程和有限差分法, 推导出雷达波的二维有限差分正演方程组, 并运用该正演方程对＂V＂字形地电模型和同一斜面上的5个圆的地电模型进行正演合成, 得到其相应的正演合成剖面;把该正演合成的剖面与实际模型相比, 得出正演合成图与实际模型的示意图在形状上有一定的差别, 这是剖面中异常点处的绕射波所致;为了提高雷达资料的解释精度, 对正演合成的雷达剖面进行后处理, 运用雷达上行波反向外推有限差分偏移法, 对2个正演合成的雷达剖面进行偏移处理, 通过对比偏移处理前后的雷达正演剖面, 采用有限差分偏移法能使雷达正演剖面中的反射波归位, 绕射波收敛, 从而大大提高了雷达正演剖面的分辨率, 有利于探地雷达剖面的地质解释和验证偏移方法的有效性.     

吉新煤矿三维地震勘探层位标定与时-深转换方法

针对一些特殊矿区因钻孔数量稀少、不能实现三维地震资料有效解释的情况,利用地质模型的正演模拟,提出一种地震反射波地质层位涵义标定：手法及时一深转换方法,预测吉新煤矿煤层底板深度。钻探与巷道资料验证结果表明,6。煤层的底板深度为489m,与文中方法预测结果吻合;正演模拟技术能够正确指导地质层位标定,叠加速度体的充分利用有效提高了底板标高精度。     

西泉地区电阻率参数反演及火山岩储层预测*

新疆准噶尔盆地东部西泉地区石炭系火山岩岩性特征分布复杂,受火山岩影响地震资料品质较差,采用常规地震储层预测方法识别火山岩储层效果不明显。通过分析研究区火山岩储层测井与地震响应特征,应用电阻率曲线构建拟声波曲线从而改善了波阻抗反演在火山岩储层识别中的效果。在对火山岩储层统计分析基础上,利用深浅电阻率差值和电阻率幅度差识别火山岩储集层,结合高分辨率波阻抗反演与电阻率参数反演信息的融合,预测了石炭系火山岩有利储层分布区。实际资料应用表明,电阻率差值参数反演能够较好地反映出火山岩储层平面变化特征。     

膝褶带构造及其地球物理正演

通过构建一系列理想的膝褶带地质模型, 利用四阶有限差分法单炮记录正演模拟方法, 对各类型膝褶带在地震反射剖面上的图像几何学特征进行了正演。正演结果分析表明: 1) 在地震剖面上, 膝褶带变形样式不同于断层构造样式, 膝褶带在地震剖面上具有一定宽度, 带内地震信息呈低振幅、信息模糊或空白带; 2) 膝褶带内外角之间的变化, 即膝褶带内地层产状的倾角变化, 对地震反射信息影响巨大; 3) 在膝褶带内地层陡立或近于直立的情况下, 地震反射界面从膝褶带外向内追踪困难, 且发生反射界面信息假象。这些地球物理正演结果为实际地震剖面的构造解释、膝褶与断裂构造的区分提供基本的参考。     

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.     

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.     

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with