1. How to use AVO technique in practice?

2. Crossplotting has become a fundamental process in AVO analysis, just as it is in petrophysical analysis.

3. AVO also can be used to Natural gas hydrate, a new kind of energy, survey research.

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4. AVO effect indicates how seismic reflection amplitude varys with offset.

5. AVO phenomenon of seismic reflection waves can be seen in both P wave andP - SV wave.

6. AVO cross plot technique is an important analysis tool of hydrocarbon detection.

7. In summary, the AVO analysis reshaped our geological understanding of the ridge as a prospect.

8. Initial interpretation of the AVO volume commenced with the extraction of RMS amplitudes from selected time interval windows relative to a horizon or horizon defined stratigraphic intervals.

9. The development trend of AVO technique is pointed out at last.

10. The practical interpretation results show that AVO technique promises encouraging prospects inthis area.

11. The key of AVO processing is to keep amplitude feature to obtain high fidelity seismic section.

12. The multiwave amplitude characteristic processing includes AVO trace gathering, AVo-AVA conversion, AVA curve fitting and attributive section output.

13. Therefore, applying the multi-azimuthal AVO method to fractured reservoirs and its vector difference analysis can determine the fracture intensity and density of the reservoirs.

14. AVO is a seismic exploration technology using the characteristics of amplitude variation versus offset to recognize the rock types and oil-gas reservoir.

15. AVO technique indicates gas - bearing formation by using the phenomenon that amplitude changes with offset.

16. Bright spot and AVO techniques p 1 ay big roles in hydrocarbon exploration.

17. The AVO (Amplitude Versus Offset) preprocessing is stricter than conventional processing in NMO, multiples attenuation and amplitude preservation.

18. However, in practice AVO technique is seriously effected by the factors of wavelet interference and above - covered layers.

19. Cross - plot of AVO attributes improves the confidence of AVO attribute.

20. However, in the presence of amplitude variation with offset (AVO), and particularly at large offsets, reflection coefficients and polarities may differ significantly from those at normal incidence.

21. AVO forward model study is important in the AVO technology.

22. With the exploration direction turning to subtle reservoirs, and more emphases are on the AVO technique.

23. The porosity and fluid saturation of rock are key factors influencing AVO.

24. Geophysical methods in exploiting gas hydrates include bottom simulating reflector, blanking zone, reversal of reflection polarity, VSP, AVO and VAMP'S structures, well logging and so on.

25. Measure the values of the resistances on this printed circuit board with the universal avo meter.

26. Wave field simulation may be a powerful tool for AVO analysis and prestack inversion.

27. Great attention should be paid to the potential application risk of AVO attribute.

28. The paper also studied the effects of porosity, fluid saturation in diphasic medium(water gas and oil gas) and change of overburden pressure on reflection wave AVO.

29. In the case of amplitude - variation - with - offset ( AVO ) crossplotting, the seismic attributes are derived from CDP data.

30. The practice shows that NC automat ic programming can not only reduce the calculation time, but also completely avo id the mistake of manual programming so that ...

31. AVO phenomenon relating to petrophysical parameters can be seen in both compressional wave and shear wave.

32. Base on AVO principle, the seismic reflection amplitude varying with offset and AVO abnormal attribute of gas-bearing sandstone are analyzed.

33. The paper mainly used AVO and FVO attributes, combining with drilling data, to detect the oil-water boundary, spatial distribution and thickness of reservoir.