Abstract: Delphi forecasting method has been used to choose the key techniques of petroleum geophysics,which consist of 5 core techniques such as the seismic collecting technique in complicated region, imaging technique of complicated structure, predicting technique of complicated reservoirs, seismic technique of oil-gas fields development ,as well as the R & D of seismic collecting data processing and interpreting software, these techniques are coincided with the situation of our country. The strategic significance, technique difficulties and appliance prospects of various core techniques have been demonstrated systematically, and it has rationality and necessity to form and develop these techniques. This research result has caused better effect in the practical application.