The Application Study Of Reservoir Geological Modeling Constrained By Seismic Data

Geological modeling technology is a research hot spot at home and abroad in recent years, and occupies a very important position in the field of reservoir description, is also an important part. By geological modeling techniques to provide theoretical guidance for the effective development of the reservoir, the reservoir heterogeneity be characterized and described.The normal reservoir modeling method only use well log data, Such modeling results is difficult to reflect the faithful reservoir heterogeneity, structural and uncertainty, so the modeling process seismic data for seismic constrained reservoir geological modeling. This will play to their superiority, the final reservoir model can meet the modeling requirements. This paper integrated geological understanding, seismic and log data, Using a multi-point geostatistics to achieve log data combined with seismic data the geological model of the study area. The main research contents are as follows:(1) This paper is based on the geological modeling method, The paper clarifies the background of reservoir geological modeling constrained by seismic data, as well as several commonly used method for reservoir geological modeling constrained by seismic data.(2) This paper focus on the multi-point geostatistics of the principle, the basic concepts and therealization of the algorithms, as well as contact between traditional geostatistics theory.(3) By characterizing the training images and generating sand body probability generating curve, Using the multi-point geostatistical method to establish two sets of sedimentary microfacies model, One isn’t constrained by seismic data,the other is constrained by seismic data. Comparing with the two groups of sedimentary microfacies model, It is found that the model established by no seismic data constraints, More random distribution of sand bodies, greater uncertainty; the model established by seismic data constraints, Lateral distribution of the sand body keep correspondence with seismic data. This side shows the reliability and accuracy of reservoir geological modeling constrained by the seismic data. Finally, make a uncertainty analysis of sedimentary microfacies model, and in conditions of facies-controlled established the physical parameters of the reservoir model.