TREA

Fishing for or freeing objects in boreholes or wells

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Industry

  • CPC
  • E21B31/00
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21BEARTH DRILLING

Current Industry

E21B31/00Fishing for or freeing objects in boreholes or wells

Sub Industries

E21B31/002Destroying the objects to be fished E21B31/005using vibrating or oscillating means E21B31/007fishing tools with means for attaching comprising fusing or sticking E21B31/03Freeing by flushing; Controlling differential pipe sticking E21B31/06using magnetic means E21B31/107using impact means for releasing stuck parts E21B31/1075using explosives E21B31/113hydraulically-operated E21B31/1135Jars with a hydraulic impedance mecanism E21B31/12Grappling tools E21B31/125specially adapted for parted wire line or ropes E21B31/14with means deflecting the direction of the tool E21B31/16combined with cutting or destroying means E21B31/18gripping externally E21B31/20gripping internally
Industries