A method and application for surface-consistent amplitude compensating based on common attitude gather

The surface-consistent amplitude compensation can attenuate the abnormal response of seismic data caused by the acquisition conditions changing and highlight the response by underground geology.It can improve the exploration precision and resolution.In the actual production, the detectors in the same receiving location will have several different inclined attitudes and different coupling with the soil caused by the construction conditions changes, which will directly make these detectors have several different features about receiving sensitivity and amplitude response.In order to solve this problem that the receiving conditions do not match the surface consistency principle and theoretical assumptions, the paper proposed a new method and technique for surface-consistent amplitude compensation based on the Common Attitude Gather, which is the subset abstracted from a Common Receiving Gather according to the tilt angles of its detectors in different periods of time.It is confirmed through analysis that the receiving condition of a Common Attitude Gather can agree with the surface-consistent more fully.The difference between the new technique and the existing ones is that the Common Receiving Gathers are replaced by the Common Attitude Gathers when implementing.Tests in the model data and the actual production data show that the new technique can effectively solve the surface-consistent amplitude compensation.