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vibroseis
相关语句
  可控震源
    Surface-consistent adaptive deconvolution for vibroseis data
    可控震源自适应地表一致性反褶积
短句来源
    Research on vibration plate of vibroseis
    可控震源振动平板的探讨
短句来源
    Discussion on the developing of vibroseis.
    可控震源发展中有关问题的探讨
短句来源
    Application of ARAM 24 VSR in high -resolution seismic exploration with vibroseis
    ARAM24—VSR在高分辨率可控震源勘探中的应用
短句来源
    Discussion on development of vibroseis in the exchange of century.
    世纪之交论可控震源的发展与变化
短句来源
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  “vibroseis”译为未确定词的双语例句
    Brief introduction of VE432 vibroseis controlling system.
    VE432震源控制系统简介
短句来源
    On-line operation of R24( developed type R48) shallow seismic instrument and vibroseis
    R24(扩展R48)浅层地震仪与震源联机
短句来源
    An example: clearing of fault in scanning interruption of SN388 seismographer using Vibroseis operation
    SN388仪器震源施工扫描中断故障排除一例
短句来源
    Introduction of control system for TRISOR digital airgun vibroseis
    TRISOR数字气枪震源控制系统介绍
短句来源
    Application and Development of vibroseis positioning techniques
    震源定位技术的应用与发展
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  vibroseis
The frequency decomposition is first applied to a shot gather in the offset-time domain to stretch impulsive data into pseudo-vibroseis data or frequency-swept data.
      
The combination of different input sources such as Vibroseis and Dynamite requires a phase adoption.
      
The efficiency of the method is shown with a synthetic data set and a real vibroseis field record.
      
-Seismic recording systems without a telemetry system have often been affected by electromagnetic induced spikes or bursts, which lead to strong data distortions combined with the correlation process of the vibroseis method.
      
Elimination of Noise Caused by Spikes and Bursts in Vibroseis Data
      
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Deconvolution for seismic data processing becomes increasingly perfect with thedevelopment of seismic data processing methods- people usually use pure-phase filter ing to make conversion from zero-phase wavelet to small-phase wavelet in processingvibroseis data;however,some troubles arise in processing Q-absorptive data becausethe method makes correlative wavelets becorne mixed phase wavelets and becausesuch phenomenon gets serious with the increase of Q absorption. ln view of such aproblem 'we put forward surface-consistent...

Deconvolution for seismic data processing becomes increasingly perfect with thedevelopment of seismic data processing methods- people usually use pure-phase filter ing to make conversion from zero-phase wavelet to small-phase wavelet in processingvibroseis data;however,some troubles arise in processing Q-absorptive data becausethe method makes correlative wavelets becorne mixed phase wavelets and becausesuch phenomenon gets serious with the increase of Q absorption. ln view of such aproblem 'we put forward surface-consistent adaptive deconv0lution for vibroseis dataprocessing. This technique can be used to automatically compute surface consistent Qabsorption and to model correlative wavelets with Q absorption. What is more,wavelet deconvolution can achieve high resolution and phase conversion- Theoreticalexperiment and practical processing show that this technique is an effective data de convolution suitable to wide frequency-band and high resolution vibroseis explo ratlons.

随着地震勘探资料处理技术的发展,用于地震勘探数据处理的反褶积方法也不断完善。但是,多年来对可控震源地震数据处理主要采用纯相位滤波方法来进行零相位至小相位的子波转换。这种方法对于有Q吸收的实际地震数据存在一定问题,它使可控震源相关子波不再是零相位,而是混合相位,并且随着Q吸收的增大,其影响也随之增加。为此,本文提出了可控震源自适应地表一致性反播积方法。该方法能自动提取地表一致性Q吸收量,并模拟出地表一致性Q吸收可控震源相关子波,用子波反褶积来达到提高分辨率和相位转换的目的。理论试验和实例表明,该方法对进一步拓宽可控震源频带和进行高分辨率勘探,提供了一种有效的可控震源数据处理反褶积方法。

Shallow high-resolution VSP is discusscd in detail on its field operation, in-house data processing and result analysis. Compared with conventional VSP, the shallow high-resolution VSP has some special properties, such as excitation with selected small charge is better than that using vibroseis, tube wave intcrferences are extremely serious to shallow VSP data but can be effetively suppressed by lowering liquid height in wells. A data processing method is presented here, which can increase accuracy, resolution...

Shallow high-resolution VSP is discusscd in detail on its field operation, in-house data processing and result analysis. Compared with conventional VSP, the shallow high-resolution VSP has some special properties, such as excitation with selected small charge is better than that using vibroseis, tube wave intcrferences are extremely serious to shallow VSP data but can be effetively suppressed by lowering liquid height in wells. A data processing method is presented here, which can increase accuracy, resolution and signal noise ratio of the shallow high-resolution VSP data. The obtained VSP data in this method have the main friquency of 140Hz, which is much higher than that of crosshole surfacc seismic data. This method is very useful to the interptetation of high-resolution shallow seismic data.

本文详细讨论了浅井高分辨率VSP野外工作方法、室内资料处理方法以及资料效果分析。指出浅井高分辨率VSP与常规VSP相比具有许多特殊性,如选择小药量井炮激发比可控震源激发效果更好;管道波干扰对浅井VSP资料的影响极为严重,降低井中液面高度可有效地压制管道波等。提出了提高浅井高分辨率VSP资料的精度、分辨率以及信噪比的处理方法,获得的VSP资料主频可达140Hz,大大高于过井地面地震资料,这将对浅层高分辨地震资料的解释起重要作用,也为地面地震勘探提供了有益的经验。

The results obtained through studing tricomponent VSP data with vibroseis from wells inXinjiang Uygur Autonomous Region show that in many places when horizontal sources (or S wavevibroseis ) are used S wave can be detected and so can more powerful P wave,when vertical sources(or compressional wave vibroseis ) are used P wave and SV wave can be detected and so cansufficiently powerful SH wave,through proper proecssing P wave in the case of horizontal sourcecan be reliably seperated from SH wave in...

The results obtained through studing tricomponent VSP data with vibroseis from wells inXinjiang Uygur Autonomous Region show that in many places when horizontal sources (or S wavevibroseis ) are used S wave can be detected and so can more powerful P wave,when vertical sources(or compressional wave vibroseis ) are used P wave and SV wave can be detected and so cansufficiently powerful SH wave,through proper proecssing P wave in the case of horizontal sourcecan be reliably seperated from SH wave in the case of vertical source,the velocity parameters ofboth P wave and S wave are seperately abstracted,then imaging of P wave,SV wave and SH wavecan be realized, and finally reservoir are analpeed through parameters of multiwave. With thisabove advancement difficulties can be overcome that one kind of source can bardly bc used for us toconduct standard multiwave oxploration. It is very important in that it make multiwave explorationcome true very casily, greatly reduce cost and increase cfficiency. Besides, under certaincircumstances this technique can be applied in surface seismic cxploration and the only differenceIies in that characteristies of waves are comparatively not clear and can not be identified casilyin the wave field obtained in the case of surface seismic oxploration.

本文通过对新疆几口井的可控震源三分量VSP观测资料的研究表明:在很多地区,水平震源(又称横波可控震源)激发时,不仅可观测到S波,也可观测到能量较强的P波;垂直震源(又称纵波可控震源)激发时,不仅可观测到P波和SV波,也可观测到能量足够强的SH波。经过适当的处理,我们能可靠地分离出水平震源激发时的P波和垂直震源激发时的SH波,分别提取P波和S波的速度参数,作P波、SV波和SH波的成像剖面;利用多波参数作储层分析。这一研究成果克服了通常认为的,只有一种震源(特别是只有垂直震源没有水平震源)难以进行标准的多波勘探的困难,这在实际生产中是很有意义的。一方面它使人们向往的多波勘探易于变为现实,一方面它将大幅度地降低多波勘探的成本,提高勘探效率。另外,这种在一定条件下,利用一种震源设备实现多波勘探的技术,也有可能推广到地面地震勘探,只是地面地震所得到的波场不像VSP观测那样,各种波的特征比较明显、易于识别而已。

 
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