Acquisition design technique with wide azimuth seismic and its application.

To improve the character of azimuth's distribution,the authors advanced a new designing method named wide azimuth 3-D layout with infilling shots in August, 1999.

Complex geological conditions in Bohai basin needs 3-D wide azimuthalobservation system, which can remove the disadvantages (big contrast between l0n-gitudinal multiplicity and.

3-D seismic exploration acquisition with wide-azimuth;

In recent years,the people has gradually had comprehensive knowledge of superiority of implementing wide azimuth survey but flinched from more expensive acquisition cost because of higher folds and smaller bin size for wide azimuth survey.

Through literatures investigation and study, the paper expounded the development situation of wide-azimuth exploration abroad and at home,clarified the definition of wide azimuth and gave a part of application cases.

By reviewing the development of international seismic survey in recent years, wide azimuth three - dimensional (full three-dimensional) seismic takes good effects in searching for fracture an.

The collection of wide azimuth angle provides with more seismic illumination intensity than that of the narrow azimuth angle, and hence has higher 3-D seismic resolution and the ability of reservoir anisotropic identification, which may improve the interpretation and identification of thin sandstone beds and small fractures.

Then process of the 3D survey design optimization and wide-azimuth seismic acquisition are recommend.