Aiming at the 3 types of exploration problem in Daqing Oilfield (oil of shallow and middle layers in the northern Songliao Basin, natural gas of deep layers in the northern of Songliao Basin, oil and gas of complex fault depression—Hailaer Basin and Yi-Shu graben etc., unconventional resources and oversea oil and gas), high-resolution 3D seismic exploration technology of lithologic reservoir, 3D seismic exploration technology of deep volcanic rock, 3D seismic exploration technology of complex fault depression, reservoir evaluation and reformation technology in less permeable reservoirs, volcanic rock and complex fault depression, well drilling technology of volcanic rock deep layers, have been formed through researches on seismic acquisition, processing and interpretation, logging and drilling. The series of technology provided technical supports for incremental reserves of lithologic reservoir in the northern Songliao Basin, discovery of large-scale natural gas reservoir of deep volcanic rock and the exploration breakthrough in complex fault depression.