广义S变换谱分解技术在松辽盆地中浅层的应用

APPLICATION OF GENERALIZED S TRANSFORMATION （GST） SPECTRUM DECOMPOSITION TECHNIQUE IN SHALLOW- MIDDLE DEPTH ZONES OF SONGLIAO BASIN

常规地震资料处理方法难以适应松辽盆地中浅层岩性圈闭识别的要求。而目前解释和反演手段较单一，也很难解决扶余油层所面临的丰度逐渐降低、主体砂岩发育条带高度分散、厚度减薄、储层预测难度大等诸多困难。为了提高扶余油层的探明储量，开展了广义S变换的理论、方法和应用研究，以提供岩性圈闭中河道和砂体的有效识别及预测方法。应用该方法，编写了模块并在高台子、敖南等工区进行了实际应用，结果表明：应用该方法在扶余油层河道砂体识别中收到了良好的效果，为地震解释和反演提供了一种新的技术手段。

Conventional seismic processing and interpretation approaches can hardly meet the requirements of lithological trap identification in shallow-middle depth zones of Songliao basin and more worse the problems like gradual declination of abundance, scattered distribution of main sand bodies, pinched out thickness and intractable reservoir prediction, etc are also not solved by the simple and restrained techniques currently used in interpretation and inversion in Fuyu oil reservoir. To increase the proven reserves in the reservoir, the philosophy, approaches and application of generalized S transformation （GST） have been discussed and studied, which can settle the problems of channel and sand body identification and prediction in lithological traps. The new technique has been put into practice in seismic areas of Gaotaizi and South Aobaota, etc, and furthermore achieved satisfactory effects in channel sand identification in Fuyu oil reservoir and become a new approach for seismic interpretation and inversion.