| 摘要 |
FIELD: oil and gas industry.SUBSTANCE: tractor assembly consists of cylindrical body with electric engine installed in it, pivoted wedging supports and at least one section with driving machine made in the form of wheels installed in the body; wheels have with curvature radius equal to radius of the examined well. At that tractor assembly is equipped additionally with pump and drive from electric engine, hydraulic motor with chain drive of wheels and actuator of wedging supports. An extra electric engine can be installed for actuator of wedging supports.EFFECT: increased draught power of the device.2 cl, 1 dwg |
