Wide band constrained inversion is to use the vertical high resolution of log data and the lateral continuity of seismic data to predict reservoir laterally.At first

acousit log is used in horizontal calibration;then stratigraphic horizon should be digitized;finally

use average amplitude of three seismic traces of well site to extract 100 ms wavelet

make random seismic inversion and reservoir prediction.This method is used in the prediction of Xiefengqiao Oilfield reservoir.The resoult indicates that the lower part of the Xingouzui Formation Shashi Formation contain two major oil bearing sands O

3

and O

4

.Then stack the oil bearing sands with structural traps

the O

4

sand covers an area of 7 km

2

a flowing oil well was drilled in it

indicating that the prediction result is accurate.