| 摘要 |
FIELD: electric engineering. SUBSTANCE: device has conductor 1, which runs from electric device, is connected to tube 2 which is located on bottom of well 3 which is drilled by mobile drilling equipment. Tube 2 is designed as tube rod grounding electrode which outer diameter is equal to drill diameter and which height is, where Dand lare diameter and height of tube grounding electrode; D- is well diameter. EFFECT: increased safety. 1 dwg |
