Seismic Multi-attribute Analysis And Apllication In Ng Of Kong Dian

Kong Dian oilfield of dagang exploration area is the main purpose of Ng layer research block. Ng for braided river sedimentary, braided river vertical is given priority to with sands balling mudstone, reservoir development.Because the store layer is high permeability reservoirs, a lack of cover, it is difficult to form lithologic reservoir, has been in many years of study to construct control research train of thought.This year, with the deepening of research, to find some unclear relations between reservoir, drilling in the pavilion II oil group found that low contradiction of oil reservoir, such as high water problem.This study this question as the breakthrough point, the introduction of seismic attribute analysis technology, deep research from the perspective of lithologic control the reservoir and accumulation, has obtained the good effect.On the basis of the study on the seismic attribute analysis combined with the feature of accumulation in the area, put forward the braided river sedimentary environment lithologic reservoir research train of thought.Through the study found that problem has been ignored in previous studies, the pavilion II oil group in the guantao sedimentary period belongs to relative source supply inadequate stage.Drilling results, the issue of mudstone is relatively development, about 10 to 40 m, this is helpful to form the lateral sealing, thus forming lithologic reservoir.We seize the characteristics in the study, the thorough analysis which laid a foundation for further research.Based on the pavilion II oil group of mud more sand less geological characteristics, first of all, seismic attribute extraction, classification and fusion, etc. Based on the new research.And then the selection of the targeted seismic sedimentology method, the spectral decomposition technique, the waveform clustering analysis technology in the study area reservoir prediction.Through strata slice technology, found from south to north channel distribution form, and then through the spectrum decomposition technique research, pointed out the situation of sand body, finally through waveform clustering and oil and gas detection method to predict may contain oil and gas range.