Application of the Method of Extracting Local Exponential Fitting Abnormity to Puguang Gas Field

详细信息   

• 责任者：Lin Changrong (Key Lab. of Geophysical Exploration of CNPC ; China Petroleum University ; Beijing 102249 ; China) ; Wang Shangxu
• 刊名：Chinese Journal of Geophysics
• 出版年：2011
• 卷期：54(1)
• 关键词：地震勘探 ; seismic exploration ; 储层预测 ; reservoir prediction ; 四川 ; Sichuan Province
• 页码：p.218-226
• 图表：6 illus., 2 tables, 30 refs.
• 分类号：1600
• issnNo：ISSN0001-5733
• isbnNo：CN11-2074/P

摘要

The method of extracting local exponential fitting abnormity is a seismic attributes extraction technology which was previously called seismic data structure characteristic method. First, local seismic waveform is assumed to be made up of background and abnormity; the background can be fitted with exponential function, and the integration of fitting error along depth accords with least squares principle. Then the authors can predict the location and the plane distribution by computing the seismic data amplitude structure abnormal value to do correlation analysis. Using this method, the authors adopt the same arithmetic and partition criterion for hydrocarbon prediction in the vertical and horizontal direction, decreasing the artificial effect, and enhancing the veracity and the reliability of the pre-drilling hydrocarbon prediction. The authors applied this method in the Puguang gas field. And the authors provide four exploration wells with the study results.