Laboratory Experimental Study On Technique For Enhancing Oil Recovery Of Viscous Oil Of West Daqing Peripheral Oilfield

Based on the detailed study of reservoir characteristics and fluid properties to the western Daqing's heavy oil, through indoor displacement experiments such as hot water flooding, steam flooding, chemical flooding, microbial flooding, foam flooding, flue gas flooding,the paper came to the ultimate recovery ratio under the conditions of different displacements.Finally, based on the indoor experimental results, using incremental analysis method, making total profits as the index, the paper contrastively evaluated the economic benefits of every displacement program by incremental method. Evaluation results showed that the optimization of the programs are the steam flooding, hot water injection, CO2 bubble flooding, surfactant 3 # + sewage flooding, and surfactant 2 # + water.Taking into account the risk of fixed investment and problem of CO2 gas sources, we recommend the three displacement programs: injection of hot water (80℃), surfactant 3 # + sewage flooding and surfactant 2 # + water as increase recovery ratio technology for western Daqing's heavy oil.