Abstract: The salt body of Carboniferous in Tahe area of Tarim basin, covering an area about 1500km², with maximum thickness of about 270m, is a target zone of this area toward east extending.The salt body is located on the main oil zone that belongs to fissure-cave reservoir of Lower Ordovician in Tahe oilfield.Since it is significant for investigation of effect of this salt body on underlying strata’s seismic data and imaging accuracy, the most representative area of 150km² within salt body is selected as a studied area. Through detailed re-processing and shot and prestack migration, the effect of the salt on underlying formation structures is studied. In addition, based on picking-up frequency and amplitude from seismic reflection event in the underlying formations within studied area, the effect of the salt on kinematic and kinetic parameters of the seismic wave is analyzed.

Key words: Tarim basin, Tahe area, Carboniferous, salt bed, structure, amplitude, frequency, image