Abstract:An important factor that influences at present on wide development of our land 3-C seismic prospecting is that people widely considered that acquired converted wave has lower energy and signal-to-noise ratio.After analysis,the paper considered that appreciation of converted wave data quality is not only from common shot gather,but also from common receiver gather.Through analysis on 3-C seismic data acquired in our work area in recent years,we discovered that converted wave event is clear and good continuity on common receiver gather which show a strong energy and a high signal-to-noise ratio in acquired converted wave.And at the same time,it shows that an important problem is that good statics for converted wave(especially its calculation)are needed in converted wave data processing.The analysis also shows that the continuity of P-wave event on common receiver gather is superior to that on common shot gather for seismic data acquired by shooting in shot hole.