Recognition of complicated reservoir by seismic inversion and its application in the Tamtsag Basin

During the course of oil exploration and development, it is very important to precisely predict complicated reservoir in petroleum exploration. Seismic wave impedance inversion is already a core technology for reservoir prediction. In this paper, the seismic inversion applied in 1800 km' data in the South Sag of the Tamtsag Basin in Republic of Mongolia. The detailed study included correction of well logging curves establishment of geologic model and choice of some inversion parameters. The seismic inversion results provided the right data for sedimentary phase research and the spatial spread of sandbodies, to solve some problems in a large extent, such as multiple provenance of the Nantun Formation, sedimentary facies changing quickly, and the difficultly to trace in the seismic profiles.