Study On Characteristics Of Structure And Reservoir Of Saertu Reservoir In Lamadian Oilfield

This paper combined 3-D seismic data and logging, drilling geologic information, under the theoretical guiding of Sedimentology, Tectonics, Geophysical Logging and Geophysics, based on the thinking of well-to-seismic integration, detailedly studied Saertu reservoir in Lamadian oilfield (emphasis on the northwestern area), extended the spaces of exploration and evaluation of Saertu reservoir, provided the technical supports for infilling adjustment in exploited zone, field extension and the next evaluation.By the detailed well-to-seismic integration structure elucidation, technologies such as 3-D visualization and identification of coherence cube, seismic horizons were exactly elucidated and the spread of faults was exactly defined. According those, we knew the structural features and the spreading characteristics in space and plane of faults in every reservoir of Saertu reservoir in research area.We innovatively used the method of structure trend surface analysis, the technology of 3-D slice elucidation analysis, and so on, to identify 66 tiny range structures.Saertu reservoir in Lamadian oilfield shows many wells, thick and large reservoir, and quick phase transformation of thick and thin reservoirs. We used well-to-seismic integration reconstruction inversion to detailedly forecast the sand of reservoir in research area, and it effectively identified the first type sand, the second type sand and sand count. Moreover, we made use of the fruits of inversion to direct the sedimentary microfacies research. The results can show the grown positions of superior sand and help analyzing the changing features of stream channel sand. So the contact relations, spreading in space and distribution as well as scale of reservoir sand in research area were exactly located.This paper fully developed the potentialities of development seismic by studying this project and brought up new idea and methods. With the sedimentary microfacies, structure and reservoir characteristics research fruits, it deepened the recognition of characteristics of structure and reservoir in developed oilfield, analyzed the remaining oil concentration rule, and made a guiding significance on remaining oil exploration and pattern modification in the later period of oil reservoirs at high water cut stages.