Method and device for analyzing seismic formation body

The invention provides a method and a device for analyzing a seismic formation body in one embodiment. The method comprises the steps of estimating dip angles in multiple directions of a seismic work area from seismic data, setting a seed seismic trace with a common midpoint at the central part of the geologic structure within the seismic work area as a reference point, performing spatial-horizon simultaneously tracking by use of a dip angle propagation technology with each seed point on the seed seismic trace as a reference point according to the dip angles in multiple directions, thereby obtaining a group of seismic horizons, and storing the horizon information of the seismic horizons in the form of seismic data body to form a seismic horizon body, wherein the seed seismic trace is composed of seed points arranged at certain intervals. According to the method, high-accuracy geologic structure characteristics can be extracted from the seismic data, and therefore, the accuracy of structural interpretation can be improved; the traditional two-dimensional and quasi-three-dimensional structural interpretation modes are converted into a tree three-dimensional structural interpretation mode, and therefore, the efficiency of horizon interpretation is improved.