| 摘要 |
FIELD: mining.SUBSTANCE: invention relates to downhole drive unit (11) to be placed place inside well containing drive unit housing (51); hydraulic motor (23), having hydraulic motor (93) housing; wheeled device (90), having fixed part (91) and rotating element (92). Fixed part is connected to drive unit housing and is connected with possibility of rotation with rotating part. Fixed and rotary part form hydraulic motor housing. Rotary part comprises wheel rim (99) closed at one end. Proposed device comprises spring part (113) ensuring assembly of hydraulic motor housing. Invention also relates to well system containing said drive and working tool connected with said drive unit for moving forward inside well or well shaft. Further, invention also relates to use of said drive unit inside well or well shaft for movement of driving unit itself and/or working tool forward inside well or well shaft.EFFECT: technical result consists in improvement of efficiency of downhole tool for movement of working tool forward on all sections of well.20 cl, 19 dwg |
