Research And Development Of The Visualization Seismic Data Interpretation System

The system of seismic data interpretation is designed for explaining the geology details. it can quickly discover the geologic abnormal situation. The traditional two-dimensional method can not satisfy the interpretation need, it makes difficult to know the geological conditions. The visualization technique can fully use the 3D seismic information to describe each kind of complex data and relations by the 3D graphics which people understand easily, so the technique becomes one of effective methods to describe the structural problems of complex fault blocks and the storage of hiding oil field.Firstly, it is carried on the comprehensive summary to the present situation of this seismic data interpretation system and the domestic and foreign development direction. The meanings of this research are analyzed in details and several key technologies of system are researched.Secondly, the seismic data is analyzed, the data gathering process, the data format and the switching process has been introduced in this paper. Through read the seismic data and draws support from OpenGL to achieve the seismic data visualization, you can choose the method such as two dimensional and three dimensional displays and so on, so the personnel can understand the geologic structure trend intuitively. In the strata explanation part, the general method of the seismic explanation has been studied, and the automatic trace by the seed guidance has been carried out, the result demonstrated this method is better than the old one, because it has higher speed and more precision. In the fault interpretation, the coherence technique and its three generation algorithms has analyzed, and use the improvement algorithm carries on the experiment, the result of fault demonstration is obvious. Regarding the both sides position of the fault, used the BP neural network method to carry on the recognition, the training result is consistent with the known situation, so we can use this method to conclude the fault position. Finally, this interpretation system has been designed and developed from four modules by VC++ 6.0. They are seismic data management, data visualization, strata interpretation and fault interpretation. The anticipated function has been realized, and then the further research of interpretation system has been forecasted.