Small-tonnage hydraulic elevator for repairing well

Abstract

A small-tonnage hydraulic elevator used for well workover is provided, which has a main body, a valve and a lock tongue. The valve is rotatably connected to one side of the lower part of the middle hole of the main body through the valve shaft, and the lock tongue is connected to the other side of the lower part of the middle hole of the main body through the lock tongue shaft. Rotational connection, the upper side of the main body is equipped with a valve cylinder, the piston rod of the valve cylinder is hinged with the valve through the valve linkage mechanism and drives the valve to rotate around the valve axis, and the other side of the upper part of the main body is provided with a deadbolt cylinder, the piston of the deadbolt cylinder The rod is hinged with the deadbolt through the deadbolt link structure and drives the deadbolt to rotate around the deadbolt axis, and the upper part of the main body is provided with a hydraulic valve body assembly. The invention can be used for various types of workover rigs and various types of wellhead automation equipment. It is a small-tonnage elevator with a load of less than 80 tons. It is small in size, light in weight, simple in structure, and easy to maintain. Remote operation, automatic balance adjustment, realize unmanned wellhead operation, improve workover efficiency, reduce production cost and improve safety performance.

Description

technical field [0001] The invention belongs to the technical field of elevators, in particular to a small-tonnage hydraulic elevator used for well workover. Background technique [0002] At present, the proportion of workover in our country is increasing, and the workover automatic wellhead equipment, that is, the workover automatic elevator, is also related to the economic and social benefits of each well. There are some defects in the structure and function of the existing wellhead elevators used for hoisting: 1. The old-fashioned hydraulic elevators at home and abroad are relatively heavy, expensive, and the after-sales costs are extremely high, and they are prone to failure; 2. They cannot be adapted to existing domestic elevators. Newly developed automatic workover drilling rig; 3. The existing hydraulic elevators are too cumbersome to select the elevator opening and closing mechanism, which is not conducive to oil field conditions, and the failure rate is extremely hi...

AI Technical Summary

Problems solved by technology

There are some defects in the structure and function of the existing wellhead elevators used for hoisting: 1. The old-fashioned hydraulic elevators at home and abroad are relatively heavy, expensive, and the after-sales costs are extremely high, and they are prone to failure; 2. They cannot be adapted to existing domestic elevators. Newly developed automatic workover drilling...

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