Abstract:The field is located in the Ordos Basin Shuanghe Yi Shan in the middle slopes. Head of the main reservoir 6, the average reservoir porosity is 12.05% and average permeability is 0.992 ?10-3μm2, is a low permeability reservoir. Shuanghe oil and gas reservoir of oil than the original formation pressure was lower, the natural reservoir of energy is limited. Based on the analysis Shuanghe Injected water and formation water properties, sensitivity test, ompatibility test and other aspects of research. To ensure the injection of water into the reservoir to meet water quality requirements, reservoir protection, to enhance the effect of water injection and water flooding techniques provide an important basis for the program.