In this paper, the basic theories of the Self-excited Oscillation Pulsed Jet Nozzle(SEOPJN) invented by the authors are introduced. Then, some experimental results are shown. According to the results, using tricorn bits assembled the SEOPJN to drill oil well, the rate of penetration (ROP) increases by 8%-77%, and the rate of the footage for tricorn bit increases by 6.7%-44%. Although the test was conducted in the water, good result was got in nature gas transportation. The volume of gas transportation could be increased by the Self-excited Oscillation Pulsed generator while the gas pressure drop could be decreased, since it significantly reduced the pressure loss during gas transportation.
Cite this paper
S. Lai and Z. Liao, "The Theory and Experimental Study of the Self-Excited Oscillation Pulsed Jet Nozzle (Pipeline Pulsed Flow Generator)," Natural Resources, Vol. 4 No. 5, 2013, pp. 395-403. doi: 10.4236/nr.2013.45049.
 Z. F. Liao and D. S. Huang, “Nozzle Device for the Self-Excited Oscillation of a Jet,” Proceedings of the 8th International Symposium on Jet Cutting Technology, Durham, August 1986, pp. 195-201.
 Z. F. Liao and C. L. Tang, “Theoretical Analysis and Experimental Study of the Pulsed Jet Device,” Proceeding of 4th US Water Jet Conference, Berkeley, 26-28 August 1987, pp. 27-34.
 Z. F. Liao, et al., “Theory and Experimental Study of the Self-Excited Oscillation Pulsed Jet Nozzle,” Chinese Journal Mechanical Engineering, Vol. 16, No. 4, 2003, pp. 379-383. doi:10.3901/CJME.2003.04.379
 Z. F. Liao, C. L. Tang and G. H. Wang, “A New Type of Nozzle for Oil-Well Drill Bits,” Proceedings 10th International Symposium on Jet Cutting Technology, Netherlands, 31 October-2 November 1990, pp. 135-144.
 Z. F. Liao and C. L. Tang, “Pulsed Jet Nozzle for Oil-Well Jetting Drilling,” Proceedings of the 7th American Water Jet Conference, Seattle, 28-31 August 1993, pp. 537-548.
 C. L. Tang, X. H. Li and Z. F. Liao, “The Study of Oscillation Jet Nozzle with Flow control Oscillator,” Proceedings of the 9th American Water Jet Conference, Dearborn, 23-26 August 1997, pp. 27-34.
 C. L. Tang and Z. F. Liao, “The Application of the Airlift and the Self-Excited Oscillation Pulsed on Exploiting Beach Placer,” 14th International Conference on Jetting Cutting Technology, Brugge, 21-23 September 1998, pp. 375-386.
 C. L. Tang and Z. F. Liao, “The Theory and Experimental Study of Self-Excited Oscillation Pulsed Jet Nozzle,” Journal of China Coal Society, Vol. 12, No. 1, 1989, pp. 90-100.
 Z. F. Liao, D. S. Chen and Y. F. Kang, “The Pipeline Pulsing Flow Generator,” China Patent No. ZL200510057466.6, 2006.