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lateral resolution
相关语句
  横向分辨率
    Inspiration of optics: Discrimination of lateral resolution of seismic data
    光学的启示——地震资料横向分辨率问题辨析
短句来源
    The key to thin layer interpretation is to improve the vertical and lateral resolution of seismic record.
    薄层解释的关键在于提高地震记录的纵、横向分辨率
短句来源
    Although this method fails to improve lateral resolution of seismic signals, yet its high pass filter property favours us to recognize high wavenumber informations resulting from subsurface abnormal geological bodies.
    尽管该方法不能提高地震信号的横向分辨率,但其高通滤波特性将有助于识别地下地质异常体的高波数信息。
短句来源
    This paper discusses various high resolution seismic data processing techniques suitable for data acquired with high resolution means. These techniques include prestack S/N ratio enhancement, heightening of the dominant frequency of reflected signals and spreading of the frequency band of significant signals, frequency divided processing, iterated optimal stack, signal direction constrained noise elimination, as well as predicted trace interpolation in 3-D FXY domain. Issues of enhancement of lateral resolution after stacking are also discussed.
    针对高分辨采集的地震资料 ,采用了高分辨地震资料处理的各种技术 :地震资料叠前提高信噪比处理、提高反射信号主频和展宽有效信号频带、分频处理方法、优化迭代叠加方法、信号方向约束预测去噪方法、三维FXY域预测道内插方法等 ,并讨论了叠后提高横向分辨率问题 ,在实际资料处理中取得了较好的效果。
短句来源
    Seismic data has good lateral resolution, and log data is high in vertical resolution. If combining both of them, the seismic prediction of lateral reservoir can be greatly improved.
    地震资料具较好的横向分辨率 ,而测井资料纵向分辨率高 ,若将二者有机地结合起来 ,就可以大大提高地震储层横向预测的效果。
短句来源
  “lateral resolution”译为未确定词的双语例句
    The lateral resolution is about 3°-5° which is tested with checkerboard method.
    并采用Checkerboard方法对分辨率进行检验 ,得到横向的分辨率约为 3°— 5° .
短句来源
    It's found that the best absolute lateral resolution of the velocity on the HQ-13 profile is about 30 kilometer,while that of the depth parameter on this profile can be smaller than 10 kilometer.
    本文第五章利用有限差分反演和射线反演的方法获得了符离集—奉贤地震测深剖面(HQ-13线)精细的地壳上地幔结构剖面,揭示出下扬子地区一些重要的结构和动力学特征:
短句来源
    Vertical resolution of image improves with increasing frequency and improvement of lateral resolution relates to the factors such as frequency,interval between source and receriver and distance from anomaly body to borehole.
    像的垂直分辨率随频率的提高而改善 ,而水平分辨率则与频率、收发间距和异常体到钻孔的距离等因素有关。
短句来源
    The main causes are the lateral resolution of seismic data and the strong reflection resulted from some special geologic bodies such as subsurface igneous rock, heterogeneous formation.
    研究结果表明 ,地下火成岩等特殊地质体和岩石的非均质性可形成比较强的地震反射 ,使天然气藏的地震检测存在陷阱 ;
短句来源
  相似匹配句对
    Inspiration of optics: Discrimination of lateral resolution of seismic data
    光学的启示——地震资料横向分辨率问题辨析
短句来源
    On seismic resolution
    地震分辨率
短句来源
    The lateral resolution is about 3°-5° which is tested with checkerboard method.
    并采用Checkerboard方法对分辨率进行检验 ,得到横向的分辨率约为 3°— 5° .
短句来源
    HIGH RESOLUTION EXPLORATION AND SEISMOGRAPHS
    高分辨率勘探与地震仪器
短句来源
    FAULT LATERAL AND EARTHQUAKE RISK
    断层旋性与地震危险性
短句来源
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  lateral resolution
It is shown that an FIB implanter with an electrostatic objective can provide a lateral resolution better than 20 nm.
      
It is shown that IPL implanters with immersion electrostatic objectives could provide a lateral resolution of about 35 nm on a subfield area of 0.06 × 0.06 mm2.
      
They are shown to provide an ultimate lateral resolution of ~14 or ~21 nm, respectively.
      
The lateral resolution in the EBIC measurements on photoconductive elements is estimated.
      
It is demonstrated that fullerene-containing composite network nanostructures with a lateral resolution up to 250 nm can be created by direct electron-beam lithography.
      
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The key to thin layer interpretation is to improve the vertical and lateral resolution of seismic record. It is possible to break the resolution limitation (λ/4 or λ/8) in a common sense using the new method of thin layer interpretation presented in this paper. Numerical calculation shows that it can reach a thickness from λ/32 to λ/100 (λ is the wave number).By wavelet transform, the new method decomposes a conventional seismic profile into a series of narrow band seismic records with different...

The key to thin layer interpretation is to improve the vertical and lateral resolution of seismic record. It is possible to break the resolution limitation (λ/4 or λ/8) in a common sense using the new method of thin layer interpretation presented in this paper. Numerical calculation shows that it can reach a thickness from λ/32 to λ/100 (λ is the wave number).By wavelet transform, the new method decomposes a conventional seismic profile into a series of narrow band seismic records with different centre frequencies. When the pass band is narrow enough, the narrow band record will tend to be monochromatic seismic profile. Using the interference or tuning of seismic waves that reflect from the top and bottom bed of an abnormal geological body such as a thin layer, the abnormal geological body can be identified effectively,through which the thin layer interpretation can be finished.However, because the narrow band seismic signal has long duration in time domain, the neighbouring seismic events will overlap each other. To solve this problem, the authors develop two methods here. One is called Frequency-Divided Process Along Layer (FDPAL), which processes each single layer gradually (layer by layer) and it is especially suitable for operation on workstation. The other is called High Resolution Reconstruction (HRR), which reconstructs a high resolution seismic profile from a series of narrow band profiles after they are processed specifically and optionally. Because some important processing steps can be inserted during the course of reconstruction, the seismic record with high resolution and S/N ratio can be obtained.The new method of thin layer interpretation is also important to layer identification using P and S waves, and in fact, it can identify P or S waves from the same layer of subtle traps.In this paper, other methods of layer identification using P and S waves and comprehensive interpretation are introduced systematically. The software system of comprehensive interpretation has been established initially on microcomputer now.

薄层解释的关键在于提高地震记录的纵、横向分辨率。该文提出的薄层解释新方法有可能突破通常意义下地震记录的分辨率极限(λ/4或λ/8),数值计算表明可达到λ/32至λ/100。该方法利用小波变换将常规地震剖面分解为一系列中心频率不同的窄带地震记录,称为分频剖面。当通带宽度足够小时,窄带剖面将趋近于单色地震波剖面,利用薄层等地质异常体对地震波的干涉、调谐效应,在横向上可以有效地区别于涉及非干涉体,对薄层进行解释。但窄带剖面地震信号延续度大,要造成相邻地震同相轴的交叠,为此,文章提出了“沿层分频处理”及“高分辨率剖面重建”两种方法来解决这一问题。前者针对单一地层逐层处理,特别适合在地震工作站上操作。后者是将若干窄带剖面进行选择性的处理之后再进行剖面的高分辨重建。由于在重建过程中能方便地加入信噪分离和频带拓宽等重要处理步骤,因此可得到分辨率、信噪比都很好的地震剖面。使用该方法还可识别对应于同一隐蔽圈闭层位的纵、横波。文章还系统介绍了多波层位对比的其他方法,并在微机上初步建立了多波层位对比及综合解释系统。

In viscoelastic medium,a new method for wave field extrapolation, which was very different from the three classical methods of wave field extrapolation in elastic medium was introduced.In addition,a method for separating the compound wave response of two(or more) nearby reflectors through wave field extrapolation was presented. It meaned that not only seismic migration to enhance lateral resolution,but also separate seismic compound wave to enhance vertical rasolution could be done.This paper in which...

In viscoelastic medium,a new method for wave field extrapolation, which was very different from the three classical methods of wave field extrapolation in elastic medium was introduced.In addition,a method for separating the compound wave response of two(or more) nearby reflectors through wave field extrapolation was presented. It meaned that not only seismic migration to enhance lateral resolution,but also separate seismic compound wave to enhance vertical rasolution could be done.This paper in which the Born's approximation was not needed,was motivated by Bleistein's lecture,but it was very different from his linearization method.

WAVEFIELDEXTRAPOLATIONINVISCOELASTICMEDIUMANDVARIABLEFOCUSMETHODTOSEPARATESEISMICCOMPOUNDWAVE¥SongShougen;YuanXiugui;HeJishan...

At present,three difficulties as the reduction of oil prices,the shortage of funds and the complicated geological conditions are faced in the seismic exploration in the world,therefore we must know how to promote the seismic exploration in Sichuan Basin.Through analyzing the trend and results of the seismic exploration techniques in the world and in combination with the practical situation of Sichuan Basin,the following knowledge is achieved,i.e.only the progress of integrated exploration of the high resolution...

At present,three difficulties as the reduction of oil prices,the shortage of funds and the complicated geological conditions are faced in the seismic exploration in the world,therefore we must know how to promote the seismic exploration in Sichuan Basin.Through analyzing the trend and results of the seismic exploration techniques in the world and in combination with the practical situation of Sichuan Basin,the following knowledge is achieved,i.e.only the progress of integrated exploration of the high resolution 3 D acquisition,processing and interpretation will be rapidly developed and the production cost will be uninterruptedly reduced simultaneously,can a place be occupied in the intensive competition for markets.High signal to noise ratio is the basic one in the three factors of high resolution exploration,so without it the high resolution and high fidelity can′t exist.In order to increase the resolution and fidelity,the noise level must be reduced first and the sonic wave and high frequency random noise coming from surface must be eliminated,which can enlarge the width of frequency band of simultaneously recording high and low frequency information.In order to carry out high resolution acquisition,it is necessary to choose good equipment first,then to operate seriously and then to improve the method of acquisition.Carrying out the integrated exploration of the high resolution small area 3_D acquisition,processing and interpretation can increase the vertical and lateral resolutions,enlarge the density of acquisition and raise the precision,so as to enhance the success ratio in exploration,quicken investment recovery and realize a good cycle of “Exploring for Oil (Gas )by Selling Produced Oil (gas).”

当前世界地震勘探面临石油降价,资金短缺,地质条件复杂三大困难,四川盆地地震勘探如何发展?通过分析世界地震勘探技术发展的趋势和效果,结合四川盆地的实际情况,提出以下认识:只有加快发展高分辨率、三维和采集、处理、解释一体化勘探的进程,同时不断促使生产成本下降,才能在市场经济激烈竞争下占有市场。高分辨率勘探三要素中,高信噪比是基础,没有高信噪比就没有高分辨率和高保真度。要提高分辨率和保真度,首先要压低噪声水平以及消除来自地表的声波和高频随机噪声,从而扩大同时记录高低频信息的频带宽度。要做好高分辨率采集,一要选好装备,二要严格施工,三要改进采集方法。发展高分辨率小面积三维采集、处理、解释一体化勘探,提高纵向和横向分辨率,提高采集密度、精度、可靠性和准确性,从而提高勘探成功率,加快投资回报,实现以油养油,以气养气的良性循环。

 
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