Abstract:

This paper presents an integrated reservoir prediction method which takes reservoir calibration as its basis,wave character analysis as its core and seismic inversion processing and interpretation as its major tools and joint application of various technologies as its feature.Its application in the study area reveals that the sand-stones in the second and the third members of the Xujiahe Formation have great thickness,favorable gas-bearing properties and stable lateral distribution.According to the study results,low frequency and weak amplitude are considered favorable seismic reflectance signatures of the reservoirs in the two members of the Xujiahe Forma-tion.A model for seismic-based placement of exploration and development well is put forward and several ap-praisal well locations for exploration and exploitation are proposed.Drilling results prove that the predictions are quite reliable and trustworthy.

Key words: wave character, characteristics of frequency division, seismic inversion, tight-sand reservoir, reservoir prediction, Xujiahe Formation, western Sichuan Basin