Application of Seismic Facies Analysis Technique for Reservoir Prediction in the Maling Oilfield

There are two sets of sands chang811 and chang831 in the chang81 reservoirs in the Maling oilfield of Ordos basin.The sand body is thin,associated with the large thick change in horizontal.Based on seismic forward modeling,we use the technique of waveform classification and frequency-divisional to interpret the seismic facies,and classify the distribution of chang811 and chang831 seismic facies.By means of comparing the seismic facies with sedimentary microfacies of single well,we setup the correlation between seismic facies and sedimentary facies.We draw the distribution and horizontal change of sandstone and predict the distribution of reservoir.The desired result has been used successfully in this region.