Utilization of Turbo-Expander to Generate Power in Natural Gas Extraction Process

Document Type : Research Paper


South Zagros Oil and Gas Production Company, Shiraz, Iran


Natural gas is one of the most reliable and general energy sources globally, which their reservoirs always have high pressures. Nowadays, due to the production and supply of a variety of turbine expansions, it is possible to generate power from natural gas extraction. In this research, by considering the operational conditions and exploitation data, the possibility and advantage of using turbo-expander in gas extraction process are explored. Based on the results, 0.26-1.1 MW of power can be generated from each production well using the pressure drop in the turbo-expander with the flow ranges between 0.5-2.0 million STD_m3/d. The power generation capacity due to natural gas conditions may be associated with the production of gas condensates which has also been studied in this research.


  1. Andreia I, Valentin T, Cristina T, Niculae T (2014) Recovery of Wasted Mechanical Energy from the Reduction of Natural Gas Pressure, Procedia Engineering, 69: 986 – 990.##
  2. Neseli M A, Ozgener O, Ozgener L (2015) Energy and exergy analysis of electricity generation from natural gas pressure reducing stations, Energy Conversion and Management, 93: 109–120. ##
  3. Bloch H P, Soares C (2001) Turbo-expanders and Process Applications, Gulf Professional Publishing, 1-18. ##
  4. Mirandola A, Minca L (1986) Energy Recovery by Expansion of High Pressure Natural Gas, The 21st Intersociety Energy Conversion Engineering Conference, 1: 16-21. ##
  5. Mirandola A, Macor A (1998) Experimental Analysis of an Energy Recovery Plant by Expansion of Natural Gas, The 23rd Intersociety Energy Conversion Engineering Conference, 4: 33-38. ##
  6. Kato T, Yamaura H, Kawno K, Hiyama T, Tada E, Kakayama Y, Kawashima I, Sato M, Yoshida J, Ito N, Sato S, Shimamato S A (1990) Large Scale turbo-expander development and its performance test result, Advances in Cryogenic Engineering, 35: 1005-1012. ##
  7. Marot G, Villard J C (2000) Recent developments of air liquid cryogenic expanders, Advances in Cryogenic Engineering, 45: 1493-1500. ##
  8. Ghosh Subrata K, Sahoo R K, Sarangi Sunil K (2011) Mathematical analysis for off-design performance of cryogenic turbo-expander, Journal of Fluids Engineering, Trans ASME, 133, 3: 31001- 31006. ##
  9. Sun W, Niu L, Chen L, Chen S T, Zhang X Q, Hou Y (2016) Numerical study of spontaneous condensation flow in an air cryogenic turbo-expander using equilibrium and non-equilibrium models, Cryogenics, 73: 42-52. ##
  10. Chen S, Sun W, Niu L, Chen L, Hou Y (2017) Effect of impeller blade profile on the cryogenic two-phase turbo-expander performance, Applied Thermal Engineering, 126: 884-891. ##
  11. Pozivil J (2004) Use of Expansion Turbines in Natural Gas Pressure Reduction Stations, Acta Montanistica Slovaca, 9, 3: 258-260. ##
  12. Lehman B, Worrell E(2001) Electricity Production from Natural Gas Pressure Recovery Using Expansion Turbines, In Proc. 2001 ACEEE Summer Study on Energy Effciency in Industry, 2: 24–27. ##
  13. Corporate Fact Sheet, L.A. Turbine Corporation, Printed in the USA. 1001_012715, 2015. ##
  14. Cengel Y A (2006) Boles M A, Thermodynamics: An Engineering Approach (5th ed.), McGraw-Hill, 5: 1-445. ##
  15. Sonntag R E, Borgnakke C, Van Wylen G J (2003) Fundamental of Thermodynamics (6th ed.), John Wiley and Sons Inc., 1-814. ##
  16. Arnold K, Stewart M (2008) Surface Production Operations, Design of Oil Handling Systems and Facilities (3th ed.), Elsevier. ##
  17. Engineering Data Book (2004) FPS Version, Volumes I and II, Sections 1-26, Gas Processors Suppliers Association. ##
  18. Vuong D H, Sarica C, Pereyra E, Al-Sarkhi A (2017) Liquid Droplet Entrainment in Two-phase Oil-Gas Low-Liquid-Loading Flow in Horizontal Pipes at High Pressure, International Journal of Multiphase Flow (IJMF). ##