Seismic Data Interpretation And Reservoir Forecasting For Zhuangxi Buried Hill Oil Field

Now it is a difficulty for oil and gas exploration in Zhuangxi buried hill. Since Cambrian and Ordovician of lower Palaeozoic, the formation and development of Zhuangxi buried hill have got through complex multi-phase tectonic movement. In this context, the reservoir fault break is developed well and has shown the complexity of favorable structure belt. These characteristics bring many difficulties in research of tectonic evolution and fluid features and identification of reservoir.We make delicate interpretation for 3D seismic data of paleo-buried hill oil field and point out two structural highlands on the bound of Zhuangxi buried hill and in lower Palaeozoic and a favorable structure belt in Precambrian. The discovery of a series of sub-thrust fault which is on the top of main thrust fault solve the problem of structure relationship of many wells of pre-Cambrian. And then our interpretation work is aimed to distribution, formation time and formation mechanism of buried hill fault. In according to the characteristics of main fault, enrichment characteristics of oil and gas and so on, we re-divide the blocks of buried hill. New blocks are better for the distribution of oil and gas.In view of multi-types, complicated structure, and strong aeolotropism of reservoir of buried hill, we use kinds of forecasting techniques for reservoir together to solve these problems in our research.We use seismic coherent analysis, seismic attribute analysis and inversion method combined seismic with logging to forecast favorable blocks with reservoir. We also take comprehensive evaluation and analysis for buried hill trap and optimize favorable blocks. These researches enrich and develop the reservoir forecasting techniques for buried hill trap and open up a broad prospect for it.