Application of the method of extracting local exponential fitting abnormity to Puguang gas field

作者：Lin Chang-Rong^*; Wang Shang-Xu

来源：Acta Geophysica Sinica, 2011, 54(1): 218-226.

DOI：10.3969/j.issn.0001-5733.2011.01.023

• Seismic data
• Structure characteristic
• Hydrocarbon layer prediction

The method of extracting local exponential fitting abnormity is a new 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 we can predict the location and the plane distribution by computing the seismic data amplitude structure abnormal value to do correlation analysis. Using this method, we can 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. We have applied this method in the Puguang gas field. And we provide four exploration wells with the study results. All wells confirm that there are very big thick pay-layers by the drilling results. The result will be a good proof for further developments in the field. The method has very good practicability.

• 出版日期2011-1
• 单位中国石油大学（北京）