3864917

Information

• Patent Grant
• 3864917

• References
• Source

• Patent Number

  3,864,917

• Date Filed

  Not available

• Date Issued

  Tuesday, February 11, 1975
  49 years ago

• CPC

  • E21B43/24 - using heat
  • E21B43/281 - using heat
  • F03G7/04 - using pressure differences or thermal differences occurring in nature
  • F24J3/085 - by injecting a working fluid directly into the ground or by using underground water
  • Y02E10/14 - Systems injecting medium directly into ground
  • Y10S159/902 - using natural heat
  • Y10S423/19 - Geothermal steam purification

• US Classifications

  • 060 - Power plants
  • 023 - Chemistry: physical processes
  • 062 - Refrigeration
  • 159 - Concentrating evaporators
  • 165 - Heat exchange
  • 166 - Wells
  • 299 - Mining or in situ disintegration of hard material
  • 405 - Hydraulic and earth engineering
  • 423 - Chemistry of inorganic compounds