Application of Prestack Elastic Parameter Inversion in the Identification of Shallow Gas Reservoir

详细信息   

• 责任者：Jin Sheng’ai (Exploration and Development Research Institute of Daqing Oilfield Company Ltd. ; Daqing 163712 ; China)
• 刊名：Petroleum Geology & Oilfield Development in Daqing
• 出版年：2011
• 卷期：30(4)
• 关键词：浅层气 ; shallow gas ; 地震勘探 ; seismic exploration ; 储层预测 ; reservoir prediction ; 松辽盆地 ; Songliao Basin
• 页码：p.149-153
• 图表：7 illus., 11 refs.
• 分类号：1600
• issnNo：ISSN1000-3754
• isbnNo：CN23-1286/TQ

摘要

The process of prestack time migration for shallow layer provides high-quality CRP gather data. Through the standardized process of sample tests and well logs, the shear wave prediction and petrophysical analyses of well logging are caught out, the petrophysical chart board to identify gas layer has been established, and finally the elastic parameters which are sensitive to the gas layer have been optimized. With the help of the above parameters, the data volume of the elastic parameters is inverted. The coincidence ratio of the obtained prediction results for gas layer is more than 80% by means of the cross and analyses of the elastic parameters taking petrophysical chart board as standard. The results of the correlation and inversion show that the vertical resolution of elastic parameter inversion is beneficial to the identification of thin interbedded gas reservoir.