3844362

Information

• Patent Grant
• 3844362

• References
• Source

• Patent Number

  3,844,362

• Date Filed

  Not available

• Date Issued

  Tuesday, October 29, 1974
  50 years ago

• CPC

  • E21B37/00 - Methods or apparatus for cleaning boreholes or wells
  • B08B9/0497 - provided with additional mechanical cleaning tools
  • E21B4/00 - Drives used in the borehole
  • E21B4/02 - Fluid rotary type drives
  • E21B7/18 - Drilling by liquid or gas jets, with or without entrained pellets
  • E21B10/60 - characterised by conduits or nozzles for drilling fluids

• US Classifications

  • 175 - Boring or penetrating the earth
  • 015 - Brushing, scrubbing, and general cleaning
  • 166 - Wells
  • 173 - Tool driving or impacting