The Research On Reservoir Gas-bearing Based On Comprehensive Analysis Of Pre-stack And Post-stack Seismic Date

With the development of seismic technology,it is more and more important how to improve the rate of success in the complex and subtle reservoir exploration.The role of the description of reservoir characteristics becomes much more important by using the integrated interpretation of pre-stack and post-stack seismic data to reservoir fluid identification.The useful information in seismic data can be acquired in this way.Besides,the improvement of the accuracy of reservoir fluid type identification can effectively reduce the risk and costs of exploration and development.On the one hand,how to determine the exists of reservoir by reservoir prediction.On the other hand,it is also needed to judging the type and nature of the fluid in the reservoir.The waveform,coherent and inversion in post-stack seismic data interpretation are currently common of property type.Waveform analysis and inversion method in this paper are used in determining the exist of reservoir and preliminary determination of petroleum distribution.Compared with post-stack attributes,pre-stack attributes,which is not stacked,contain more reservoir information.It made full use of the original information from multi folds to predict reservoir.This method is much more useful and reliable than post-stack attributes analysis.Therefore,pre-stack and post-stack data are used to comprehensive analysis of gas reservoir.The analysis from pre-stack and post-stack data is essential step of gas-bearing reservoir analysis.Author used the analysis of pre-stack traces,property and pre-stack simultaneous inversion to make sure the gas-bearing response type.Pre-stack simultaneous inversion can get the P-impedance and S-impedance.And then,some other elastic parameter property body by analysis of gas-bearing of distribution.In addition,building more responsive to the fluid factor property to direct detection of oil and gas is a way that people have been trying.I propose and construct a new fluid identification factor and discuss its effectiveness.This new fluid factor which has been demonstrated good fluid detection based on facial recognition capabilities,has some practical value.In a word,the study about gas-bearing reservoir in this paper is to use pre-stack and post-stack seismic data analysis of the existence of gas reservoir and its seismic responses of the gas type,gas plane distribution,and application of this method in the actual data,provide a reliable basis for the actual production projects.