The Application Of Seismic Sedimentary In Reservoir Prediction

Seismic sedimentology is based on the seismic attribute technology which is successfully used in the division of sedimentary facies under isochronous stratigraphic framework, It is to match quantitative demand that seismic data used in analysis of sedimentary facies and reservoir. For this reason seismic sedimentology can be defined as a subject which use seismic data and technology study sedimentary facies under isochronous stratigraphic framework. The means and methods of Sedimentology, including not only the conventional interpretation and the establishment of seismic chronostratigraphic framework, but also including seismic attribute extraction and seismic inversion, the purpose is that we use quantitative seismic information to objectively reflect sedimentary information and analysis sedimentary facies under isochronous stratigraphic framework.In this paper, considering the objective conditions of geological and seismic data, we propose sedimentology as a research method, use its advantages to predict reservoir in targeted areas. In order to master the basic geological features of gas reservoirs, understand the development of reservoir distribution and physical properties, and analysis the main objective, difficult with emphasis of seismic prediction. We collect all of the gas reservoir drilling, oil testing, display, logging and other basic data and regional research results of second segment of of XuJiaHe formation in HC area. First of all, we improve the resolution of superposition and migration two-dimension surveying lines, and this is aimed at improving the quality. It also lay a solid foundation for reservoir prediction and inversion. And we use well data to make fine-calibration of reservoir and to analysis characteristics of it. On this basis, we divide second segment of of XuJiaHe formation into three segment for further study. Using neural network technology to the sensitive seismic attributes slices on the upper, middle and lower three parts to study Inversion of surface properties, reservoir distribution research is carried out at last. Combined two-dimensional survey line information on the actual situation and the distribution of wells in HC regions, stochastic inversion and model-based seismic inversion technology were used to estimate the speed and GR, then according to the relationship between speed and porosity to the clay content using speed of the porosity of sandstone body to strike, the last comprehensive analysis of three inversion results to determine the distribution reservoir. Because the research unit obtains the refinement, compared to before the reservoir description was finer.