On the basis of fine 3-D seismic data,the paper used coherent data volume technique , TDQ (Time-Depth Quality) technique for fine fault in-terpretation of Second Sand Member of Aershan Formation in N-50 well zone of Erenaoer depres-sion , Erlian Basin and built up a fine structural model;
Variance cube technology is a kind of new technology,which makes use of correlativity of seismic signal between neighboring trace in data,and reveals the discontinuity information in data cube to perform fault or lithological discrimination through computing variance values of seismic traces sample points.
Under the guidance of anisotropic theory and azimuthal AVO composite seismogram from real well data,seismic attribute parameters such as amplitude,velocity and high frequency attenuation are extracted from the 3D data cube,and their azimuthal variations are used to predict the anisotropy of fractures.
In this paper the computation method of coherent data cube and the exact image of fault and special geologic body in data cube are described. It shows a good prospect of application of the coherent attribute body.
This article in view of Ordos basin low scope structure,low porosity,low permeability,hiding oil gas pool characteristic,After the synthesis application coherent data body analysis,phase automatic sorting qualitative recognition granulated substance body thickness,the seismic amplitude attribute analysis,the frequency spectrum decompose,the multi- wells restraint reservoir folds the inversion and so on to fold the attribute analysis technology,Explored a set to suit this area oil gas characteristic the reservoir crosswise forecast and the oil gas recognition pattern.
the advanced techniques such as difference of data volume,wave impedance data body and visualization can be used for interpretation if there is 3 D seismic data,making high resolution semsmic data more truthfully reflect the subsurface geology.
On the basis of AVO analysis and study of inversion of seismic wave impedance,the paper analyzed the principle of Fat ti-AVO equations and sparse spike inversion and the joint constraint sparse spike inversion was conducted for the data volume of multiple prestack angle-gathers, from which the three data volumes of P-wave impedance , S wave impedance and density could slmulTaneously acquired.
The frequency technique and the time slice of co- herent data volumes and 3D seismic data were comprehensively uti- lized to describe the seismic response characteristics and surface distribution features of the igneous rocks.
Then the two data volumes separately undergo 3-D velocity analysis and 3-Dwave field image to have 3-D DMO velocity field, 3-D DMO stack section, 3-Dprestack migration velocity field, and 3-D prestack migration section.
The areal GLOG processing is performed on migrated 3D data volumes, to which the key is to deal with the temporal and spatial variation of calibration coefficients when only a small amount of well data are available to control thc cntirc areal data.
imaging processing of P-wave and PS-converted wave in depth domain have been implemented and both imaging data volumes have been obtained separately according to the results of velocity inversion,which have good correlation and are of benefit to data interpretation, among which the imaging of PS-converted wave showed higher resolution and S/N ratio, which has good applied prospect.
According to the characteristics and 3-Dimensional (3-D) feature analysis of multi-spectral and hyperspectral image data volume, the new fusion approach using 3-D wavelet based method is proposed.
Since, the data volume of raster are very huge, special strategies (for example, pyramid gridded method) must be adopted in order to manage raster data efficiently.
The data volume is so huge that compression is necessary.
With respect to the MSCT data volume, the emergency radiologists have to modify the strategies in their examination reading and result transmission, with a growing role attributed to two- and three-dimensional reconstructions.
The diagnostic value of axial slices is superior to coronal reconstructions despite the reduced data volume and display of the physiological course of bowel loops on the coronal plane.
Based on the processed 3-D stack data by the computer Model PDP 11/45, the key link of handling with 3-D data 3-D migration and the way to obtain the desired section from 3-D data after stack are introduced in some detail in this paper. Also, problems to the selecting parameters, raising efficiency and saving operation time are discussed.
Three-Dimension Seismic Data Volume is a three-dimensional digital image which maps the geological structure subsurface.This paper presents a method for ncompressing the seismic data volume.The method can readily get access to the aribitry cross sections from the 3-D seismic data volume and display it.It is also suitable for the compression of other kinds of 3-D digital images,such as the various 3-D CT images in medicine and industry.
Trace interpolation technique can change 2-D grid data into 3-D seismic data suitable for migration, it also can be used in 3-D seismic exploration. In 3-D seismic exploration, first, field layout is designed in accordance with the requirement that there are at least three sampling points in the width of a smallest fault block which must be ascertained; then, data acquisition is made; finally, in data processing, the field seismic data are interpolated according to required line spacing and CDP spacing. The...
Trace interpolation technique can change 2-D grid data into 3-D seismic data suitable for migration, it also can be used in 3-D seismic exploration. In 3-D seismic exploration, first, field layout is designed in accordance with the requirement that there are at least three sampling points in the width of a smallest fault block which must be ascertained; then, data acquisition is made; finally, in data processing, the field seismic data are interpolated according to required line spacing and CDP spacing. The paper describes the trace interpolation technique and sives the example of trace interpolation of 3-D seismic data in Wennan area, Dongpu depression. It has been proved that both the S/N ratio and the resolution of interpolated seismic data show obvious improvement.