关键词: 地震沉积学, 沉积微相, 构造解释, 90°相位转换技术, 地层切片, 分频技术

Abstract: Seismic sedimentology is the use of seismic information in the study on sedimentary rocks and their formation processes. It is a new marginal intersection subject following the seismic stratigraphy and sequence stratigraphy. It emphasizes that seismic events don't always follow the isochronal depositional surfaces. The key methods for researching the seismic sedimentology include 90°-phasing convertion, stratal slicing and frequency decomposion. The application of the key techniques combined with other geophysical technologies in the microfacies research under the isochronal strata framework showed the favorable prospect in petroleum exploration and development. The evaluation of reservoir in Guanjiapu area of Dagang Oil Field based on the seismic attributes and well log data analyses using the concept of seismic sedimentology settled a strong base for the development of the field. The structure interpretation of S Oil Field in Peru using the seismic sedimentologic methods was helpful to construct an accurate structural model and find the new low-amplitude traps.

Key words: seismic sedimentology, sedimentary microfacies, structure interpretation, 90? phasing convertion technique, stratal slicing, frequency decomposing technology