关键词: 地震采集, 声波多普勒传感器, 波场旋转分量, 多源地震采集, 双圆形采集, 分布式震源组合(DSA)

Abstract: Seismic acquisition technology is experiencing a profound change and developing at a quick rate. The conception of “focusing on record of wave field” is gradually replacing the traditional acquisition design mindset of CMP stacks. It aims at recording most of the data influencing geological targets and recording noise wave field without alias, laying a good foundation for imaging and identification of noise. The new-type senor, such as sonic wave Doppler senor, no longer emphasizes coupling with surface, reducing a large amount of acquisition. The 508XT land acquisition system can record seismic data signal of one million traces at real time, bringing seismic imaging resolution up to a new level. Meanwhile, rotation components sensor can measure more information of wave field. With development of vibroseis and excitation methods, the traditional discontinuous acquisition method of shot-by-shot excitation and reception is developed into multisource separate excitation as planned and continuous recording of different shots, improving the acquisition efficiency. Some new technologies have been developed for offshore acquisition, such as double-circle acquisition, complete removal of ghosts and OBN. Adoption of DSA substantially improves seismic economic feasibility and helps seismic data reflect the geological conditions by means of data redundancy.

Key words: seismic acquisition, sonic wave Doppler sensor, wave field rotation components, multi-source seismic acquisition, double circle