鄂尔多斯盆地苏14井区盒8段储层宏观非均质性研究

苏里格气田位于鄂尔多斯盆地北部,研究层段盒8段属于典型的岩性圈闭气藏,具有低孔、低渗、低丰度的特点。以苏里格气田中区苏14井区为研究目标,在明确地层系统划分和区域地质特征的前提下,运用测井、试气等实际生产资料,同时结合研究区沉积相研究成果,分别对苏里格气田苏14井区盒8段储层层内非均质性、层间非均质性和平面非均质性进行研究。结果表明,苏14井区盒8段层内和层间非均质性都表现出极强程度,平面非均质性要相对较弱。其中盒8上段砂体沿主河道方向砂体连续性较好,而垂直主河道方向上砂体叠置频繁、连续性差,导致层间非均质性极强。     

改善超稠油高周期吞吐效果的技术研究及应用

辽河油田曙一区超稠油蒸汽吞吐进入高轮阶段后,存在着吞吐效果变差,周期产油量下降、吨油成本上升等问题。在认真分析了影响高轮井开发效果的主要因素后,有针对性地提出并采取了组合式吞吐、间歇蒸汽吞吐、多元式吞吐等多种技术对策,打破了以往单一的吞吐模式,提高了热利用率,改善了高轮井吞吐效果。这些技术措施对其它超稠油和稠油油藏开发是有借鉴作用。     

红山嘴油田红003区白垩系清水河组一段非均质性研究

为明确红山嘴油田红003区白垩系清水河组一段剩余油的分布,在储层沉积微相研究的基础上,综合运用岩心观察,薄片分析,压汞测试,测井资料,对该区的宏观非均质性从层内、层间和平面3个方面进行了系统研究。该区属于潮湿气候条件下的冲积扇扇中沉积,可进一步划分为辫状河道、砂坝和溢流沉积。砂层组具有冲积扇洪水期与枯水期交替沉积的特点,各砂层层内渗透率呈复合韵律,层内夹层多,层间非均质性较强;平面上,砂体自西北向东南呈条带状分布,沿物源方向,砂体连通性和物性较好,垂直物源方向的砂体连通性和物性则较差,而横向砂坝的发育和边部砂坝的欠发育,使得砂体厚度向东西方向减薄,具有薄-厚-薄变化特征,平面非均质性强。同时,鉴于纵向上较强的非均质性,给出了采取细分开采,分层注水,以降低层间干扰的建议。     

卞东油田阜三段沉积微相及储层非均质性研究

卞东油田阜三段为三角洲沉积,发育三角洲前缘亚相。通过岩心与测、录井数据观察分析本区三角洲沉积特征,识别相标志,划分出水下分流河道、河口沙坝与前缘沙席三个主要的沉积微相,其中水下分流河道与河口沙坝是本区储层的主体相带。储层层内、层间及平面非均质性较强,隔层趋向分布于远离物源的方向,砂体连通性差,平面非均质性受沉积相带及砂体展布形态控制。     

苏里格气田苏36区块盒8—山1段沉积特征

苏里格气田苏36区块主产层为盒8—山1段,为了探究该区沉积微相类型及砂体展布规律,在前人研究成果的基础,通过岩心观察与描述、岩性分析、粒度分析、单井相解释及连井剖面分析等方法,对研究区沉积微相类型及砂体的空间展布特征进行研究,并模拟沉积演化模式。研究结果表明:盒8上亚段和山1段发育曲流河沉积相,可识别出点坝、决口扇、泛滥平原等微相;盒8下亚段发育辫状河沉积相,可识别出心坝、侧坝、沙泥坪等微相。从山1段到盒8段,沉积体系由曲流河到辫状河,又过渡为曲流河;物源主要来自东北方向,近物源碎屑物快速堆积;砂体平行物源供给方向呈条带状展布,沿长轴方向砂体连续性较好。有利储集体集中在盒8下亚段,储集性能优于盒8上及山1段。     

桩139块边底水稠油油藏蒸汽吞吐开发效果的措施研究

针对桩西油田桩139块稠油油藏埋藏深、井斜度大、边底水活跃及高含水的开发现状,在重新进行精细油藏描述的基础上,对储层的非均质性、油水关系及构造特征取得了新的认识,提出在开发过程中立足蒸汽吞吐,完善相关配套工艺技术,综合运用局部井网加密、优化射孔井段、逐周期增加注汽强度,有针对性地实施氮气泡沫蒸汽吞吐缓解油藏边底水上升,注蒸汽伴注高温防膨剂降低注汽压力,措施实施后,单井吞吐效果较好,经济效益显著,对深层边底水稠油油藏的高效开发具有一定的指导意义。     

薄层稠油油藏过热蒸汽吞吐技术优势解析

在过热蒸汽开发稠油油藏提高采收率机理分析基础上,利用数值模拟技术对1-3m、3-5m和5m以上薄层稠油油藏实施过热蒸汽吞吐的开发效果进行了对比和分析。通过对比普通湿蒸汽、高温湿蒸汽和过热蒸汽的增油能力、节约蒸汽效果及油藏特征,分析了稠油油藏过热蒸汽吞吐的技术优势。研究结果表明,过热蒸汽吞吐的增油能力明显高于普通湿饱和蒸汽吞吐和高温湿蒸汽,但当过热度超过20℃后,增油幅度变缓;相同产油量时,过热蒸汽要比湿饱和蒸汽节约大量蒸汽。这是因为过热蒸汽携热量大,比容高,可以有效萃取稠油中的轻质组分,有效扩大波及体积,增加洗油效率。     

浅海陆棚相沉积特征及其沉积差异性分析

珠江口盆地文昌A/B/C油田珠江组一段上部储层发育于浅海陆棚沉积环境,主要砂体为滨外浅滩、滨外砂坝复合体,相对而言滨外砂坝微相因水流的搬运、清洗作用强、泥质含量相对低、砂岩相对纯净而表现为相对优质的储层,但在平面及纵向上滨外砂坝微相变化较快,砂体的叠置关系不清,因此分析滨外浅滩、滨外砂坝沉积微相的特征,并确定储层砂体的展布规律对优质储层预测具有重要意义。研究通过3个油田的沉积差异性分析认为,构造走向控制砂体展布方向,距物源区远近和水体深浅决定储层砂体物性特征,文昌B油田近物源、水体较浅,其构造高部位的滨外砂坝砂体为优质储层分布区;文昌A油田距离物源较远、水体较深,储层物性最差;文昌C油田储层物性中等。     

松辽盆地两井孤店地区泉头组四段沉积微相研究

从区域地质背景出发,通过岩芯观察、粒度分析、重矿物以及测井曲线形态等资料的综合分析表明,两井孤店地区泉头组四段主要为三角洲前缘-滨浅湖沉积体系,来自东南和西南的两大水系同时对该区供应沉积物源.三角洲水下平原主要发育水下分流河道、水下分流间湾、水下分流河道侧翼等沉积微相;前缘部位发育河口坝、坝间、远砂坝、席状砂等,水下分流河道是本区占主导地位的骨架砂体.首次指出了该区泉四段不同时期各相带的空间组合及分布特征,为本区泉四段今后的油气勘探和开发提供了依据.     

浅海陆棚相沉积特征及其沉积差异性分析——以珠江口盆地文昌A/B/C油田为例

珠江口盆地文昌A/B/C油田珠江组一段上部储层发育于浅海陆棚沉积环境,主要砂体为滨外浅滩、滨外砂坝复合体。相对而言滨外砂坝微相因水流的搬运、清洗作用强、泥质含量相对低、砂岩相对纯净而表现为相对优质的储层;但在平面及纵向上滨外砂坝微相变化较快,砂体的叠置关系不清;因此分析滨外浅滩、滨外砂坝沉积微相的特征,并确定储层砂体的展布规律对优质储层预测具有重要意义。研究通过3个油田的沉积差异性分析认为,构造走向控制砂体展布方向,距物源区远近和水体深浅决定储层砂体物性特征,文昌B油田近物源、水体较浅,其构造高部位的滨外砂坝砂体为优质储层分布区;文昌A油田距离物源较远、水体较深,储层物性最差;文昌C油田储层物性中等。     

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     

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     

Journal of Donghua University ( English Edition) Contents of Volume 31

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