Investigation and Application of Self-Resonating Cavitating Water Jet in Petroleum Engineering

Li, Gensheng; Shen, Zhonghou; Chang-shan, Zhou; Zhang, Debin; Chen, Hongbing

doi:10.1081/lft-20009686218

Cited by 51 publications

(18 citation statements)

References 2 publications

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“…In the design of the organ-pipe nozzles, the preferred Strouhal number was 0.3 and the model number was 0.25, which have been determined and used in previous related research [10][11][12][13] . The inlet diameter was 13 mm and the chamber diameter was 5mm, which were determined from the "Organ-pipe Nozzle Design Manual" established by LI, et al [31] . It should be emphasized that all the three nozzles have an exit diameter of 2 mm to ensure the same flow rate under each inlet pressure.…”

Section: Experimental Setup and Proceduresmentioning

confidence: 99%

“…To be more specific, LI, et al [21][22][23] , successfully applied SRCW in petroleum engineering in China and confirmed that pressure fluctuation amplitudes and peaks can be increased by 24% and 37%, respectively, which dramatically enhances the average rate of penetration by 31.2%. Also, JOHNSON, et al [24] , demonstrated that in deep hole drilling the efficiency of SRCW yielded by organ-pipe nozzles was more than two orders of magnitude higher than that of a conventional jet.…”

Section: Introduction mentioning

confidence: 99%

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Effects of area discontinuity at nozzle inlet on the characteristics of self-resonating cavitating waterjet

Kang

Ding

et al. 2016

Chin. J. Mech. Eng.

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The current research on self-resonating cavitating waterjet(SRCW) mainly focuses on the generation mechanism and structure optimization. Researches relating to the influences of disturbances at nozzle inlet on the characteristics of the jet are rarely available. In order to further improve the performance of SRCW, effects of area discontinuity(enlargement and contraction) are experimentally investigated using three organ-pipe nozzles. Axial pressure oscillation peak and amplitude as well as aggressive erosion intensity of the jet are used to evaluate the effects. The results reveal that area enlargement and contraction affect the peak differently, depending on the inlet pressure, nozzle geometry, and standoff distance; while area contraction always improves the amplitude regardless of these factors. At inlet pressures of 10 MPa and 20 MPa, area discontinuity improves the peak at almost all the testing standoff distances, while this only happens at smaller standoff distances with the inlet pressure increased to 30 MPa. The capability of area discontinuity for improving the amplitude is enhancing with increasing inlet pressure. Moreover, the cavitation erosion ability of the jet can be largely enhanced around the optimum standoff distance, depending on the type of area discontinuity and nozzle geometry. A preliminary analysis of the influence of area discontinuity on the disturbance waves in the flow is also performed. The proposed research provides a new method for effectively enhancing the performance of SRCW.

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Section: Experimental Setup and Proceduresmentioning

confidence: 99%

Section: Introduction mentioning

confidence: 99%

Effects of area discontinuity at nozzle inlet on the characteristics of self-resonating cavitating waterjet

Kang

Ding

et al. 2016

Chin. J. Mech. Eng.

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show abstract

“…To further improve the cutting and breaking effect of water jet, human constantly tried new ways to improve the structure and property of water jet. In the 1980s, abrasive jet (Ruihe et al, 2010;Yiyu et al, 2009;Hongjian et al, 2008), cavitating jet (Gensheng and Zhongou, 2008), rotary jet (Ruihe et al, 1999;Yuhuan et al, 2002) and other new types of jet occurred and were applied in oil drilling, coal mining, cutting, cleaning and in other fields. In the middle and later periods of 1990s, water jet technology developed rapidly with the development of science and technology and the application fields had expanded in aviation, aerospace, construction, transportation, metallurgy, machinery, forestry, textile, environment protection, medicine and others.…”

Section: Introductionmentioning

confidence: 97%

“…New types of jet like cavitating jet (Gensheng and Zhongou, 2008), pulsed jet, rotary jet, non-circle jet, abrasive jet have gradually applied in oil drilling (Gensheng et al, 2001;Ruichang, 2010). With the rapid progress towards deep and ultra-deep wells, the demands of improving the ROP and reducing the cost of exploration and exploitation are more and more intense.…”

Section: Introductionmentioning

confidence: 99%

Experiment on rock breaking with supercritical carbon dioxide jet

Wang

Shen

et al. 2015

Journal of Petroleum Science and Engineering

104

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“…The principal self-excited configurations used to produce the self-excited cavitating waterjet include "organ-pipe nozzle", "pulser", "pulser-fed", and "laid-back pulser" [14]. Among them, the organ-pipe nozzle has been the subject of extensive study and development due to the simple structure, low flow resistance, and strong erosion ability [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Effects of Organ-Pipe Chamber Geometry on the Frequency and Erosion Characteristics of the Self-Excited Cavitating Waterjet

Cai

Yan

et al. 2020

Energies

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Erosion experiments were performed to uncover the impact of organ-pipe chamber geometry on the frequency and erosion characteristics of self-excited cavitating waterjets. Jets emanating from self-excited nozzles with various organ-pipe geometries were investigated. The upstream and downstream contraction ratios of the organ-pipe resonator were changed respectively from 1.5 to 6 and 2 to 12. Pressure sensors and hydrophone were used to characterize jets’ frequency characteristics. Mass loss was also obtained in each of the configurations to assess the erosion performance. By tuning the self-excited frequency, the peak resonance was achieved using the nozzles with different geometries. Accordingly, the acoustic natural frequencies of various chamber geometries were obtained precisely. Results show that with increasing upstream and downstream contraction ratio of the organ-pipe chamber, the acoustic natural frequency increases monotonically due to the reduction of equivalent length, while the resonance amplitude and mass loss first increase and then decrease. There are optimum geometric parameters to reach the largest resonance amplitude and erosion mass loss: the upstream contraction ratio being between two and four, and downstream ratio being between four and seven. The effective length of the organ pipe can be calculated by the sum of the physical length and equivalent length to accurately obtain the acoustic natural frequency. Under the optimized parameters, the equivalent length can be estimated as 0.35D.

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Investigation and Application of Self-Resonating Cavitating Water Jet in Petroleum Engineering

Cited by 51 publications

References 2 publications

Effects of area discontinuity at nozzle inlet on the characteristics of self-resonating cavitating waterjet

Effects of area discontinuity at nozzle inlet on the characteristics of self-resonating cavitating waterjet

Experiment on rock breaking with supercritical carbon dioxide jet

Effects of Organ-Pipe Chamber Geometry on the Frequency and Erosion Characteristics of the Self-Excited Cavitating Waterjet

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