AVO TECHNIQUE AND ITS APPLICATION
Liu Dewei Tang Yun Yang Zhenwu
In recent years, the study of "Amplitude versus Offset" arouses a great interest in exploration geophysicists circle. The technique above mentioned is abbreviated as AVO. In practice, the usual way is to turn the CMP gather into the angular CMP gather and then compare the energy level between the small incident angles and the large ones and followed by making a linear fitting befween the amplitude and the sin2 θ within the CMP-angular gather by means of the simplified Zoeppritz equation. Consequently, the lithological parameters can be extracted. Sections constructed with these parameters will provide basis for interpretation in direct detection of oil and gas. The stress laid in this paper is to expound the application of the AVO technique. And particularly the detailed description given is to examine the difference between the P-wave and the CMP stacking.