Seismic Sedimentology Study on Carbonate Reservoir in the Pearl River Mouth Basin

Key words: 
• carbonate /
• reservoir /
• seismic sedimentology /
• the Pearl River Formation /
• the Pearl River Mouth Basin

Abstract: Carbonate reservoir, where is the Miocene Zhujiang Formation in H block of the Pearl River Mouth Basin, has two problems. Firstly, it is the thin reservoir thickness, which is between 6~35 m, generally less than the vertical resolution of 1/4 wavelength; Secondly, the reservoir is heterogeneity; The sedimentary facies is changing fastly; the reservoir is controlled by sedimentary facies, but the research area has not been studied for the regional carbonate sedimentary facies. Aiming at the above problems, this paper is in order to carry out the 3D poststack seismic data waveform analysis as auxiliary, using wells's log, logging division phase. At the same time, building the relationship of elastic wave impedance and lithology, then calibrating the body of prestack inversion elastic wave impedance. The attempt is made to study the seismic imaging in the study area, identifying the range of platform edge reef, patch reef and the bioclastic beach inside of platform. The favorable reservoir have been confirmed by drilling.