Abstract: Several great breakthroughs have been made continuously in Damintun sag in recent years, the discoveries, including Anfutun,western Dongshengpu and Pinganpu burial hills,have been regarded as the typical examples of deepening exploration formature oil-producing areas. Practical experiences madein exploration showthat changing the idea of exploration is precondition, innovation and development of exploration technique is key factor.Aiming at the key geologic difficulties such as complicated structures, reservoirs recognition and evaluation,fracture developed or not and area predictionof lithology,integratedexploration technique series ,consisting of 3-Dvisualization,seismic multi-attribute,integratedwell logging evaluation, multi- attributeinverse of reservoir characteristicsand etc,have been developed ,which has played a keyrole in launching integrated evaluation,guiding drilling distribution and discovering newoil belts and fields.

Key words: Damintun sag, burialhill;fracture;lithology, visualization;seismic multi-attribute;well loggingevaluation, inverse ofreservoircharacteristics