Technology Of Swabbing Indraft Acoustic Wave And Aerated Water Plug Removal

In the process of the development of the reservoir, the reservoir formation plugging of the vicinity of wellbore is the main factor effecting oil well productivity. It is a problem that production crew have to face. In many methods removing the oil well plugging, acoustic wave and aerated water plug removal technology has a very high application prospect because the equipments are few and the technology is simple. But it is restricted that the aerated water flowing needing air compressor, especially in the aera without air compressor. So, it is necessary to study swabbing indraft acoustic wave and aerated water plug removal technology.This paper briefly introducts the simple theory of fluid mechamics and acoustic wave. A vertical multiphase flow mathematical model was built based on the theory of fluid mechamics through the modifying the orkiszewski method and one software was compiled to calculate the vertical mutiphase flow in the wellbore and match the flowing condition to the pilot tests. Then the physical model of the jet pump was built based on fluid dynamic and jet pump design theory and the optimum warking window and ultimate working window was given through the laboratory tests. At last, the physical model of the acoustic wave propagation in the formation was built based on the analysis of the many methods removing the oil well plugging to calculate the radius of plug removal and the construction procedure of the swabbing indraft acoustic wave and aerated water plug removal technology was given. This plug removal technology has wide application range and high efficiency through pilot tests.