Abstract：The seismic and geologic characters of carbon ate reservoir in Sichuan basin are:1.the Poison rado of gas-bearing strata is greatly lower than that of non-reservoir and the Poison ratio of gas-bearing strata is greatly lower than that of water-bearing strata;②the reflected amplitude associated with gas-bearing reservoir increased with incident angle and the reflected amplitude associated with water-bearing reservoir has no significant variance with incident angle;③the absolute value of reflected amplitude associated with gas-bearing reservoir increased with incident angle and the polarity has no reverse. On the basis of above-mentioned seismic and geologic characters of carbonate reservoir,the paper pointed out that we should use prestack time migration to transform the commonmidpoint gathers to comurion-reflection-point gathers in AVO preprocessing;we should study continuous spectrum analysis besides ordinary AVO attributes analysis and inversion of elastic impedance in AVO attributes analyses. Application of AVO technical series in the paper to distinguish the gas from water in many sets of carbonate reservoirs，that was examined by the results of testing of well in tens exploration wells.
戴勇, 李正文, 蔡启宏. 四川盆地碳酸盐岩储层的气、水判别[J]. 石油地球物理勘探, 2004, 39(4): 457-460.
Dai Yong, Li Zhen-wen, Cai Qi-hong. Distinguishing of gas from water in carbonate reservoir of Sichuan basin. Dai Yong,Li Zhen-wen,Cai Qi-hong. OGP, 2004, 39(4): 457-460.
