Structure Designation Of Array Acoustic Wave Generator And Antiscaling Experimental Studies

In the development of oil field, scaling in water wells is so popular to affects normal production of oil wells, which is key factor to restrain and influence the development of oil and gas field. Removal of the scaling after it has happened not only increases production cost because the frequent alteration between job execution and production interrupts normal production schedule, but does harm to formation as a result of application of different chemical drugs. This influence is hardly removed once it has happend. In order to decrease the production cost without harming the petroleum resources, scaling can be controlled by fluid motivated acoustic wave generated by Array Acoustic Wave Generator which is designed according to the unique effect of acoustic wave on antiscaling.In this paper, technical status of antiscaling, formation and impairment of scaling both at home and abroad is investigated fully. Present mechanism for scaling in oil field production is summarized, and the factors that may affect formation and deposit of scaling is analyzed from different aspects. In addition, existent problems and faults in present measures are concluded, especially. The continuum equation, energy equation and momentum equation are deduced from basic theory of vibrating fluid dynamics while mechanism of fluid vibration is analyzed. By virtue of the unique advantage of acoustic wave in antiscaling and paraffin control, a new type of arrayed acoustic wave generator is designed, which consists of vibrating plates put in arrayed way. The fix method for plates is advanced to enlarge its life. Then, intensity analysis and modal analysis is done with finite element analyzing software ANSYS on array acoustic wave generator, especially on the core vibrating plate of the generator, both main part and core vibrating plate of the generator passed the intensity test. Indoor simulation experiment is carried on to study property of flow rate, frequency and amplitude of vibration of arrayed acoustic wave generator, in which the effect of size of vibrating plates and flow speed on frequency and amplitude of vibration of acoustic wave. Thereafter, geometry parameters like thickness, slope angle and width of vibrating plates are optimized. Moreover, indoor antiscaling experiment is conducted to value its efficiency, which reach as high as 96.5%.