Abstract: Organic reef belongs to a type of special carbonate reservoir body, which plays a key role in the oil and gas storage, migration and accumulation phases and is an important geological target of petroleum exploration and development. However, it is difficult to identify it by high resolution or by single and conventional approaches, due to some unfavorable factors, including complicated inner structures, reef microfacies such as reef cap, reef core and reef basement, by which thin interbed geological framework can be easily developed and formed,and seismic signals restricted by low frequency and narrow frequency bandwidth. In terms of the frequency, phase, energy, waveform and other dynamic and geometric properties, this paper presents some special processing methods for energy compensation, frequent bandwidth expansion, wavelet decomposition and reconstruction, etc. The combined application of them can obtain the different range and high resolution seismic data which are able to highlight the seismic responses of the organic reefs, such as the boundary reflection of reef, the domeshaped reflection from reef outline, strong reflection from reef cap, low elevation reflection from reef bottom and overlap reflection from reef flanks, etc. These data from log, geological and high?resolution seismic prospecting as well as inversed P?wave impedance indicate that high?quality reservoir (reef cap) is low in wave impedance, the reef core and and biodetritus beach are relatively high in wave impedance, and the reef complex is of high?low constantly jumping impedances. The case study applied to Changxing reefs in Yuanba gas field shows good prediction results and high consistent rate between well logs and high resolution seismic data by comparison of the original seismic data with the real drilling results