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Chemistry and Technology of Fuels and Oils

, Volume 55, Issue 4, pp 497–507 | Cite as

Transient Pressure Fluctuation Effect During Gas Drilling in Horizontal Well

  • Qiang FangEmail author
  • Yingfeng Meng
  • Hongtao Li
  • Na Wei
  • Gao Li
Article
  • 12 Downloads

Combining gas drilling technology with horizontal well drilling leads to improvement in production in oil and gas reservoirs. However, wellbore gas encountering high-pressure formation gas could bring substantial risks in gas drilling process. A theoretical model for pressure wave speed and attenuation coefficient in gaseous phase flow is established and analytically solved by classic fluid-mechanics model and small perturbation theory. The simulation results suggest that the main factors affecting the pressure wave are angular frequency, pipe diameter, and original pressure. In addition, a pressure wave test device is designed to validate the model, and the experimental results fit well with the simulation results. The work presented in this paper can provide a theoretical basis for horizontal section gas drilling and can also detect gas influx to ensure safety and prevent accidents.

Keywords

Gas drilling horizontal well pressure fluctuation wave speed attenuation coefficient 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Qiang Fang
    • 1
    Email author
  • Yingfeng Meng
    • 1
  • Hongtao Li
    • 1
  • Na Wei
    • 1
  • Gao Li
    • 1
  1. 1.State Key Laboratory of Oil and Gas Reservoir Geology and ExploitationSouthwest Petroleum UniversityChengduChina

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