Research Of 3D Seismic Data Interpretation Technology And Its Application In Yakela Area

3D seismic data interpretation technology is an advanced technology at present.In thia paper Yakela area was chosen as study area. We made full use of 3D seismic data interpretation technology to solve the problem of the structure fine interpretation. The results wew satisfied.Structural location is in the middle of northeast depression.The main part is Yakela fault arch of Shaya uplift.In this area,some hydrocarbon reservoirs had been found. It has excellent conditions for the formation of hydrocarbon reservoir. In early days, we finished many seismic and drilling works, found and confirmed some traps. This area has great potential for hydrocarbon exploration.In early days, there are some problems in seismic data of this area, for example, shortage of 3D seismic data and basic data, lagged seismic data processing technology, lagged varying velocity mapping technology, those factors reduce the accuracy of results of interpretation.To solve those problems, it is necessary to process seismic data again. Then we can do some research on connected-fields processing and mapping.In this paper , we made full use of previous results of geogle data, include seismic data, drilling data, logging data, core data. And we use seismic layer labeling thchnology, coherence cube technology, faulted structure multidisciplinary analysis technology, 3D visualization technolgy. Taking advantage of landmark software, we can do comprehensive interpretation. Because of formation velocity varying greatly, so we add to velocity point, then we do some researches on velocity, enhance velocity precision. Besides that, velocity correction research was done. At last, we got accurate average velocity. We made structural map by varying velocity mapping technology.Through this research, we sloved a lot of problems,such as low efficiency, heavy workload, leaking minor fault, leaking minor particular geologic body. Making full use of advantage of 3D seismic data, enhancing interpretation and mapping precision, submit a large number of result drawing. And we confirmed fault system and structural feature. Those results are very helpful for us to explore hydrocarbon accumulation area.