Seismic Interpretation And Reservoir Prediction From Nanpu 5th Structure In Dongying Group

The 5th structure of Nanpu is the important succeeding zone for the lithologic reservoir exploration. The structure of Dongying Formation belongs to the deep oil production period, but the research is still in the primary stage, the main problems existing are the understanding of its structural characteristics, tectonic origin mechanism, these problems have seriously restricted the later period of research depth of the region’s oil and gas exploration. The study uses the sequence stratigraphy as the guide, carrying out the fine structural interpretation, clearing the tectonic characteristics, completed the lithologic stratigraphic trap identification and the volcanic rocks of the oil and gas into accumulation control factors of comprehensive geological study, and then realize the understanding of reservoir characteristics in this area, providing a reliable basis for the subsequent reservoir exploration and evaluation.Based on the 3D seismic interpretation, combining with the drilling data, it redefines the group layer Ed1, Ed2, Ed3 s, Ed3, total of 4 reflective interfaces, finishing the completion of the corresponding structural mapping and tectonic characteristics of the analysis.Combined with the structural research results, deposition and reservoir characteristics understanding,studying the seismic inversion, through the well logging reservoir sensitivity analysis, preferably on the reservoir sand body resolution ability of the curve low recovery, high frequency compensation curve reconstruction inversion, and the seismic attributes and the reservoir characteristics are compared and analyzed, finally summed up for the reservoir prediction methods and routes, completing the advantage of the sand body prediction.The research results show that the study area of Dongying formation fracture develops, the structure is difficult to find, so the sequence stratigraphy is the focus of this study is to ensure the accuracy of the work later. They ought to maximum guarantee the seismic inversion, the seismic attributes the technique of sand body prediction consistency of results and the depositional system, the reservoir characteristics, the area in the middle of the slope belt and central and southern slope, they should be for favorable exploration area advantage, and through a combination of structure, lithology and reservoir prediction research, completing the deployment of three favorable exploration wells.