THE APPLICATION OF 3D SEISMIC SURVEY FOR OIL/GAS POOL IN YUSHULIN AREA

The 3D seismic survey conducted in the Yushulin area was the one first ever used in Daqing Oilfield. The data collected from there have been elaborately interpreted (examined in considerable detail ) using INTERPRET-22 system. And the analysis against 2D seismic data was made. An appreciable geological payoff yielded therefrom has been made. As a result, " the seismic pattern T2", a highly controversa! problem existed in Songliao Basin for years has been satisfactorily solved. It indicates that there must be a fault . A bunch of minor faults and minor structures are discovered, which lay a sound foundation for ensuring the success rate of drilling. An improvement’ of S/N ratio of deep reflection has been shown. Thus, a new approach being enable to resolve the "tough nut " encountered in deep seismic exploration within the basin is developed. Also, an overall study of the result produced from 3D survey furnishes us the possibility of getting acquainted with the established regularity of hydrocarbon accumulation in Yushulin area.