Abstract：The S/N ratio and resolution of former acquired deep seismic data in Liaohe depression were poorer, unable to meet the needs for further exploration and development of Liaohe Oilfield. For that reason, it should take acquirement of good deep data as an object and make our efforts to improve the S/N ratio and resolution of seismic data. Liaohe Oilfield Division first chose north Oulituozi of east sag, Liaohe depression, as breakthrough, conducted a systematic analyses and series of objects-oriented experiments by using a series of new techniques such as shooting in optimum lithology, protection of useful weak signals, geometry-changed design and increasing folds, and acquired new seismic data. It is visibly shown from new acquired data that on the basis of acquiring abundant shallow data, the reflections from deep levels (bellow 3000m) and within the buried hill were clearly visible and resolution was greatly improved.
