Application Research Of The Reservoir Prediction To The Marine 3D Seismic Data

To the oil exploratory development,the technique of 3D seismic reservoir prediction plays a more and more important part in accurate reservoir description or reservoir evaluation and so on,taking advantage of this can greatly raise the percentage of successful drilling.On the foundation of analysis and expounding the method of seismic reservoir prediction,including the method of property parameter analysis to the seismic wave field,the article combining with the actual 3D seismic exploration materials,has carried on the application of the seismic reservoir prediction,and has carried on the analysis to the effect of the actual application,finally has carried on the through-going prediction to the effective reservoir on the foundation of the inversion reservoir parameters and the analysis to the seismic property paramerters.According to the analysis to the method and the technique and the research to the application,I get some recognization as follow:(1)The accuracy and validity of the results to the seismic reservoir prediction,not only have relation with the adaptiveness of the method,the reasonability of the constraint condition,the correctness of the processing parameters and the degree in depth of thecomprehensive analysis,but also depend on the resolution and signal-to-noise ratio of the seismic materials and other factors.So getting more accurate and more detailed results of the 3Dseismic reservoir prediction,it is especially important for the keeping-amplitude,the keeping-ture and the high resolution processing.(2)As the stage of the reservoir evaluation,compare with the conventional method or the method of the single parameter,picking up the seismic multi-parameter information from the 3D seismic data volume and carrying on the comprehensive analysis to theseismic facies by the nenural network technique make an organic combination of the seismic multi-proterty parameters and the nenuralo network technique.It great enhance the accurate and the reliability of the analysis and prediction result,decreases the personal error,and brings the alternation more into correspondence with thelaws of the objective.Especially in the marine oil/gas seismic prospect,as controled by the drill platform in survery block and limited by the condition of well constraint,using the drilling geology and log information to carry on the analysis to the sedimentary facies of the target stratum group make the strech larger and more personal.So using the 3D seismic data to carry on the facies analysis which exhibit great superiority.(3)The method of the seismic reservoir parameter's inversion is the process that using seismic data,drilling geology and log information to image for the steric configuration and the physical property of the subsurface rock.In marine oil/gas seismic prospect,as controled by the drill platform in survery block,limited by the well control information,and distributed uniform,so it is very important to choose the suitable means and technique for reservoir parameter inversion.It has proved that it is suitable to choose the acoustic impedance based on the seismic data which is controled by the known well and add pseudo-well control,while it is not suitable choose the model inversion method of seismic data restriaint which takes log information primarily.(4)According to the application research of the actual 3D seismic data of offshore,it has proved that suitable choice of method and technique,and comprehensive analysis and research of multi-information are the foundation and the effective way to get the reasonably and reliably research results.