关键词: 可控震源, 组合方式, 初至差值, 静校正, 同相轴, 成像效果

Abstract: Along with the exploration and development of oil-rich depressions up-grading to a higher level, the exploration, amid at complex fault-block, lithologic trap, low amplitude structure and thin reservoir, has entered a stage of detailed exploration. Thus, precision requirement of new acquisition seismic data imaging is also getting higher and higher. Up to now, seismic data acquisition in China most uses the array with multiple vibrators. This method will influence the precision of seismic imaging. In this paper, forward modeling and actual field seismic acquisition data analysis showed that vibrators combination had greater impact on the direction of static correction and imaging accuracy of geological bodies. More than one source combination, arranged parallel to the combination, produced relativelysimple error change and strong regularity. This is a relatively good combination. Vibrator portfolio also affects the accuracy of statics. Generally speaking, the smaller the array length, the higher the accuracy of statics

Key words: vibrator, array pattern, the first break difference, statics, in-phase axis, imaging results