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Numerical simulation of pressure impact on hydro-automatic reversing valve core in a down-hole pump

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Abstract

Ultra-high-pressure-jet-assisted drilling is one of the main techniques for improving the rate of penetration in well drilling. The hydro-automatic reversing valve, which is a five-way, two-position control valve, is the core component of the novel down-hole pump. Two reversing valves with symmetrical structure and non-symmetrical structure were designed. And a prototype of optimized symmetrical structure hydro-automatic reversing valve was built and tested. Calculation and analysis results indicate that the down-hole pump can intensify the drilling mud to 148.5–178.5 MPa within an area ratio of 9.9 and 11.9 theoretically. Two reversing valves with symmetrical structure and non-symmetrical structure were compared and analyzed by numerical simulation. Results show that force impacting on the surface of the non-symmetrical structure hydro-automatic reversing valve core is worse than that on the optimized one. With the symmetrical structure reversing valve used in the novel down-hole pump, impact on the core surface becomes balanced, friction and abrasion of valve parts will be reduced, operation stability and safety can be enhanced.

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Acknowledgments

The research presented in this paper is supported by the Fundamental Research Funds for the Central Universities (2012LWB15).

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Authors and Affiliations

  1. School of Electric Power Engineering, China University of Mining and Technology, Xuzhou, China

    Wei Zhao, Chuwen Guo & Fengchao Wang

Authors
  1. Wei Zhao
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  2. Chuwen Guo
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  3. Fengchao Wang
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Corresponding author

Correspondence to Chuwen Guo.

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Technical Editor: Celso Kazuyuki Morooka.

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Zhao, W., Guo, C. & Wang, F. Numerical simulation of pressure impact on hydro-automatic reversing valve core in a down-hole pump. J Braz. Soc. Mech. Sci. Eng. 38, 525–533 (2016). https://doi.org/10.1007/s40430-015-0333-5

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  • DOI: https://doi.org/10.1007/s40430-015-0333-5

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