Research And Application Of Enhanced Oil Recovery Technology Of Artificial High-power Monochromatic Wave In Low Permeability Reservoir

Enhanced oil recovery technology of artificial high-power monochromatic wave in low permeability reservoir is a new EOR methods, which are advantages of no pollution, low cost and the simple craft. So we can figure out that the technology good application prospects for enhanced oil recovery ratio.In order to provide experimental basis for technology of artificial high-power monochromatic wave in the field application, this thesis studied and obtained the influence rule between vibration frequency and vibration acceleration and absolute permeability, the relative permeability as well as the water drive recovery ratio of core sample by the laboratory experiment. Simultaneously we also determined the best vibrational frequency and the best intensity of vibration.Finally, taking into account the economy, the vibration of two different methods which is the vibration of continuous and intermittent vibration of were compared and found that intermittent vibration is more conducive to enhance oil recovery.In addition, we optimized materials of spring which is the main components of the center of origin, besides calculating the size of the corresponding spring based on previous studies. Also according to working condition we studied the dynamics characteristic of the vibration system, established simplification mathematical model about law of motion of the center of origin, and carried on the analysis solution. At the same time we gained the rule of monochromatic propagation in the casing and one-dimensional layer. At last, we obtained relationship expression between permeability and distance in one-dimensional layer under the condition.Using the above model, the present paper also carried on the related computation to the wire rope system and the energy radiator affected the vibrational energy transmission. At the same time we obtained the biggest elongation quantity of the wire rope as well as vibration strike force to endophragm of the drive pipe because of the energy radiator impacted. So by accomplished the above-mentioned studies we can provide theoretical and experimental basis for the application of site, as well as we can provide a reference to optimization of scene parameters.