The Research & Application On Static Correction In Complex Surface Area

In seismic prospecting, static correction is always cared by prospector and not resolved finally, especially for complicated-surface area. Static correction influences on the reflection image and can lead to fault seismic interpretation and finally lead to dry-well. So it is very important and necessary for us to research. The research of this dissertation is based on the purpose of Master studying and applied in seismic data in the Tarim basin.First, the reason for producing static correction , the character of seismic data and the exist problem in previous processing section are analysed in detailed . we describe three static methods : field primary static correction ,refraction statics and automatic residual statics , and then introduce the principle of the three static methods. Second ,the dissertation gives the method of elevation statics, calculating static values by using minor refraction data , first-break pickup method and residual technique.In this dissertation, the method of field primary static correction and refraction statics are applied together is given firstly ,avoid the fault of using refraction static alone; compile the program of calculating static values , studying the automatic residual statics multiple iterating technique. Practical data processing shows that the static correction processing flow given in this dissertation is feasible.