| 摘要 |
FIELD: repair equipment of oil and gas wells; applicable in with drawal of slip dies and similar objects from well bottom. SUBSTANCE: outer surface of body 1 has catching members 6 located in diametrically opposite longitudinal recesses 4 for motion upward and to the sides from center. Catching member have projections on their ends. In body 1, in recesses 4 in the upper part are conical projections 5 engageable with springs 10 of catching members 6. Body 1 in the middle part has stops 16, and pusher 12 is located inside the body 1 and has thread 15 on its end. EFFECT: higher operate reliability. 1 dwg |
