Acoustic stimulation of oil production by a downhole emitter based on a jet-driven Helmholtz oscillator

Марфин, Е.А.; Gataullin, R.N.; Абдрашитов, А.А.

doi:10.1016/j.petrol.2022.110705

Cited by 7 publications

(3 citation statements)

References 54 publications

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“…It generates the hole tone. The liquid volume contained in the resonant chamber (3), the inlet nozzle in the front cover, and the outlet in the power housing is responsible for amplifying the harmonic of the hole tone at frequencies close to the natural frequency of the resonator, the value of which can be determined by the formula [49]:…”

Section: Jet-driven Helmholtz Oscillatormentioning

confidence: 99%

“…A greater effect is achieved due to the resonant amplification of self-oscillations of the submerged jet [44]. The fluidic oscillators are widely used in the physical and chemical effects of acoustic cavitation, which are utilized in biotechnology [45,46], oil refining [47], and the oil industry [48], in particular, in drilling wells and intensifying oil production [49], green chemistry [50], the food industry [51], agriculture [52], etc. [53].…”

Section: Introductionmentioning

confidence: 99%

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Cavitation Reactor for Pretreatment of Liquid Agricultural Waste

et al. 2023

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One of the most well-known methods of intensifying the process of anaerobic digestion is the pretreatment of raw materials. For the first time, the use of a jet-driven Helmholtz oscillator for biomass pretreatment is proposed. The design of the device is optimal for creating hydraulic cavitation; however, in this case, acoustic oscillations are generated in the system and resonance occurs. In this study, the optimal design of this device was determined for the subsequent design of a cavitation reactor. The diameter of the resonant chamber was varied in the range from 28.3 to 47.5 mm, and its length from 6 to 14 mm; in addition, the diameter of the outlet was changed from 6.1 to 6.3 mm. Based on the experimental data obtained, it was found that the optimal ratio of the length of the resonator chamber to the diameter of the inlet nozzle is 1.73, and the inner diameter of the resonator chamber to the diameter of the inlet nozzle corresponds to 5.5. Improving the technology of agricultural waste disposal will ensure their maximum involvement in economic circulation, reduce the consumption of traditional fuel and energy resources, and improve the technological and machine-building base, which makes it possible to produce competitive cavitation reactors.

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Section: Jet-driven Helmholtz Oscillatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cavitation Reactor for Pretreatment of Liquid Agricultural Waste

et al. 2023

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“…Specifically, it is employed in the production of heavy oil by assisting in viscosity reduction, in the processing and upgrading of crude oil in refineries, in pipeline transportation, and in storage facilities. There are many studies in the literature that focus on the influence of ultrasound energy on enhancing oil recovery [26][27][28][29][30][31][32][33]. It is reported that cavitation processing is widely used in the cracking and rectification of hydrocarbons [34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Unveiling the Potential of Cavitation Erosion-Induced Heavy Crude Oil Upgrading

Baimukhametov,

Kayumov,

Dengaev

et al. 2023

Fluids

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The application of ultrasonic waves in the processing of hydrocarbons is a new promising technology that has developed rapidly in recent years. However, the acoustic-induced cavitation erosion phenomenon is poorly studied. In this paper, a comparison study of cavitation erosion was carried out in water and oils with different viscosities produced from Ashal’cha and North Komsomol using an ultrasonic reactor operating at an industrial frequency of 20 kHz. The acoustic spectra obtained from hydrophones during the ultrasonic treatment of fluids can be characterized by using subharmonics of the main frequency and a continuous white noise level. Moreover, the cavitation erosion of aluminum foil under various ultrasound irradiation times and power levels was thoroughly investigated. It has been found that the process of ultrasonic cavitation has a less erosive impact on metal foil in oil due to its high viscosity. In addition, the formation of microflows in the oil phase, which also intensify the erosion process, is hindered. Cavitation erosion in the Ashal’cha oil sample exhibited a higher intensity compared to that in the North Komsomol oil sample. It was found that upon increasing ultrasound intensity in the case of the viscous (Ashal’cha) oil sample, cavitation stability was disrupted. In turn, this led to a reduction in the collapse energy of the cavitation bubbles. The results we obtained enable the assessment of cavitation erosion in crude oil and could be used to improve methodologies for monitoring and optimizing cavitation processes in crude oil.

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