Space area weighting scale factor, velocity value and calculation method of velocity data
A technology of spatial area and proportional coefficient, which is applied in the field of oil and gas seismic exploration and investigation, can solve the problems of low calculation efficiency, inability to provide high-quality imaging for seismic velocity data processing, and little significance for actual scale application, and achieve the effect of accurate calculation
Active Publication Date: 2018-09-28
BC P INC CHINA NAT PETROLEUM CORP +1
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Interpolation methods such as linear, inverse distance weighting, bilinear polynomial, and trend surface are usually used, but these methods either cannot effectively describe the spatial variation characteristics of the velocity field of seismic data, or have low computational efficiency and little practical scale application significance, and cannot be used for Seismic Velocity Data Processing Provides High-Quality Imaging
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[0035] Hereinafter, the method for calculating the spatial area weighted proportional coefficient and velocity value of superimposed velocity data and the method for calculating the spatial area weighted proportion of superimposed velocity data in the present invention will be described in detail with reference to exemplary embodiments and accompanying drawings.
[0036] Generally speaking, the present invention carries out the space area weighted interpolation of the speed value and the proportional coefficient by adopting the idea of combining the space area and the space, and through the flexible and convenient space area weighted interpolation idea of the speed value and the proportional coefficient, the space can be calculated according to the actual situation. The three-dimensional area weighted interpolation calculation can also calculate only one of the velocity value or the proportional coefficient, or both, so as to achieve the purpose of calculating the velocity i...
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The invention provides a space-area weighted proportion coefficient of speed data, a speed value and a space-area weighted proportion coefficient calculating method. According to the space-area weighted proportion coefficient of the speed data, the speed value and the space-area weighted proportion coefficient calculating method, a thinking of combining area with space is adopted, and space-area weighted interpolation of speed value and portion coefficient is performed. Through respectively calculating the speed value and the proportion coefficient of a space point, a proportion calculation result of the speed data are obtained, thereby realizing a purpose of more accurately calculating the speed in a complicated area. The space-area weighted proportion coefficient of the speed data, the speed value and the space-area weighted proportion coefficient calculating method have advantages of simple calculating process, high processing effect, etc.
Description
technical field [0001] The invention belongs to the field of petroleum and natural gas seismic exploration survey, in particular, relates to a spatial area weighting proportional coefficient and / or velocity value calculation method and velocity data spatial area weighting of velocity data mainly applied to seismic data processing and interpretation of petroleum seismic exploration Proportional Calculation Method. Background technique [0002] Usually, in seismic data processing, especially in migration imaging, it is inappropriate to directly use the existing velocity data for stacking or migration, and often needs to be processed, which is to multiply the velocity point value by a proportional coefficient to make it more accurate. Suitable for stacking or offsetting, this scale factor generally only considers changes along the time direction. [0003] However, in the time direction, the scale factor provided in the processing is often less than the number of samples in the...
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IPC IPC(8): G01V1/30
CPCG01V1/303G01V2210/60G01V2210/74
Inventor 罗红明何光明张恩嘉陈爱萍李忠张华庞崇友金德刚陈立
Owner BC P INC CHINA NAT PETROLEUM CORP