International Scientific Journal


In petroleum engineering, nitrogen drilling is an important technology for building wellbores between surfaces and reservoirs. To uncover the downhole flow field and the change rules of rock temperature during drilling with nitrogen jet, we constructed a CFD model by coupling the property equations of nitrogen. The flow fields of nitrogen jet and rock temperature distribution at different times were simulated. Results showed that the high speed nitrogen jet can be efficiently generated because of the nozzle acceleration and the impingement effect can be induced during drilling. The temperature of the nitrogen jet decreased due to the Joule-Thomson effect. This phenomenon suggested that the nitrogen jet induced additional thermal cracks on the bottomhole rock, which was very beneficial for the improvement of rock-breaking efficiency.
PAPER REVISED: 2018-08-25
PAPER ACCEPTED: 2018-09-22
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THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Supplement 3, PAGES [S711 - S717]
  1. Guo, B., Gao, D., New Development of Theories in Gas Drilling, Petroleum Science, 10 (2013), 4, pp. 507-514
  2. Wang, H, et al., The Development and Prospect of Supercritical Carbon Dioxide Drilling, Petroleum Science and Technology, 30 (2012), 16, pp. 1670-1676
  3. Wang, H., et al., A Feasibility Analysis on Shale Gas Exploitation with Supercritical Carbon Dioxide, Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 34 (2012), 15, pp. 1426-1435
  4. Xue, Y., et al., An elastoplastic model for gas flow characteristics around drainage borehole considering post-peak failure and elastic compaction, Environmental Earth Sciences, 77 (2018), 19, pp. 669
  5. Yang, S., et al., The Characteristics of Recycling Gas Drilling Technology, Petroleum Science, 9 (2012), 1, pp. 59-65
  6. Chen, X., et al., A New Method for Determining The Minimum Gas Injection Rate Required for Hole Cleaning in Horizontal Gas Drilling, Journal of Natural Gas Science and Engineering, 21 (2014), 11, pp. 1084-1090
  7. Huang, Z., et al., Abrasive Water Jet Perforation Experiments under Ambient Pressures, Atomization and Sprays, 25 (2015), 7, pp. 617-627
  8. Li, G., et al., Research and Applications of Novel Jet Techniques in Well Drilling, Completion and Fracturing, Science Foundation in China, 22 (2014), 2, pp. 68-80
  9. Li, J., et al., The Complexity of Thermal Effect on Rock Failure in Gas-Drilling Shale-Gas Wells, Journal of Natural Gas Science and Engineering, 21 (2014), 11, pp. 255-259
  10. Batchelor, G. K., An Introduction to Fluid Dynamics, Cambridge University Press, Cambridge, UK, 2000
  11. Tao, W., Numerical Heat Transfer, Xi'an Jiaotong University, Xi'an, China, 2001.
  12. Mehra, B., et al., Local Field Synergy Analysis of Conjugate Heat Transfer for Different Plane Fin Configurations, Applied Thermal Engineering, 130 (2018), 2, pp. 1105-1120
  13. Xue, Y., et al., Evaluation of the Non-Darcy Effect of Water Inrush from Karst Collapse Columns by Means of a Nonlinear Flow Model, Water, 10 (2018), 9, pp. 1234
  14. Span, R., et al., A Reference Equation of State For The Thermodynamic Properties of Nitrogen for Temperatures from 63.151 to 1000 K and Pressures to 2200 MPa, Journal of Physical and Chemical Reference Data, 29 (2000), 6, pp. 1361-1433
  15. Lemmon, E. W., Jacobsen, R. T., Viscosity and Thermal Conductivity Equations for Nitrogen, Oxygen, Argon, and Air, International Journal of Thermophysics, 25 (2004), 1, pp. 21-69
  16. Song, X., et al., Numerical Analysis on The Impact of The Flow Field Of Hydrothermal Jet Drilling for Geothermal Wells in A Confined Cooling Environment, Geothermics, 66 (2017), 3, pp. 39-49

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence