TREA

Methods or apparatus for cleaning boreholes or wells

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Industry

  • CPC
  • E21B37/00
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21BEARTH DRILLING

Current Industry

E21B37/00Methods or apparatus for cleaning boreholes or wells

Sub Industries

E21B37/02Scrapers specially adapted therefor E21B37/04operated by fluid pressure E21B37/045Free-piston scrapers E21B37/06using chemical means for preventing, limiting or eliminating the deposition of paraffins or like substances E21B37/08cleaning in situ of down-hole filters, screens E21B37/10Well swabs
Industries