FIELD: operation and underground repairs of oil well with use of continuous steel pipes and rods. SUBSTANCE: pulling-and-running mechanism has body, pulling chains, clamping rollers, hydraulic cylinders for pipe gripping and hydraulic cylinders for chain tensioning. In this case, hydraulic cylinders for pipe gripping are hinge in pair with sliders placed in guide recesses and carrying clamping rolls. Body recesses are rectangular in cross-section. Areas of working surfaces of pistons of each next lowering pair of hydraulic cylinders are less than previous one. EFFECT: provided reliability and prolonged service life of mechanism in its repeated use. 4 dwg
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