Abstract: The petroleum geological experiment technology of Daqing Oil Field is developed into six main analysis and testing families, 18 items of testing series and 108 items of analysis technology. Crude oil fingerprint chromatogram technology is used to test distribution of productivity for mixed producing formations, solving the bottleneck of fourlayer production. Inclusion micro Fourier infrared spectroscopy technology provides the new means for study of the oil and gas migration and accumulation periods. Creation of illite crystallinity inspecting technology can quantitatively determine rock metamorphic grades. Rock swelling rate inspecting technology helps identify the reasons for reservoir damage. The study of experiment technology for simulation of reservoir damage caused by drilling fluid plays an important role in protection and emancipation of reservoir. Inspection of oil saturation in core drilling with keep-up pressure can truthfully reflects distribution of fluids in the reservoir.