Numerical-control petroleum workover line

Abstract

The invention discloses a numerical-control petroleum workover line mainly applied to the process of petroleum tubing maintenance. The numerical-control petroleum workover line comprises a derrick disposed on a platform. A tubing rack is disposed on the side of the derrick. The numerical-control petroleum workover line is characterized in that a tube conveying chute is arranged at the end of the tube rack, a trolley for pushing tubing to move is arranged on the tube conveying chute, a hydraulic pipe clamp manipulator capable of lifting up one end of a tube and a tube-conveying manipulator capable of gripping the tube which is lifted and lifting and conveying the tube to a next procedure are disposed at the end of the tube conveying chute, main and auxiliary elevators which are used for regulating the tube to the upper middle of the platform and capable of moving up and down are arranged on the derrick, and a hydraulic slip is disposed below the main and auxiliary elevators at the center of the platform. The numerical-control petroleum workover line has the advantages that the whole process of tube mounting and demounting is automated and is fast and stable, and the tube is minimally damaged during mounting and demounting.

Description

technical field [0001] The invention discloses a numerical control operation line for petroleum well workover, which is mainly applicable to the maintenance process of petroleum oil wells. Background technique [0002] In the maintenance process of existing oil wells, it is usually necessary to lift out and lower the tubing one by one. The existing equipment is usually realized by combining the hook on the derrick with the tubing elevator. The tubing is lifted by manual assistance. , when the tubing is lifted manually, it is unstable and easy to shake, and it is easy to damage the tubing. The downhole part of the tubing is usually fixed with slip teeth. Since the existing jaws only have a short length when they are in action, the force application area is small and it is easy to pinch. Oil pipe, and it is not easy to control the falling speed and direction of falling by the oil pipe’s own gravity during the downward movement, causing radial displacement of the oil pipe, whi...

AI Technical Summary

Problems solved by technology

[0002] In the maintenance process of existing oil wells, it is usually necessary to lift out and lower the tubing one by one. The existing equipment is usually realized by combining the hook on the derrick with the tubing elevator. The tubing is lifted by manual assistance. , when the tubing is lifted manually, it is unstable and easy to shake, and it is easy to damage the tubing. The downhole part of the tubing is usually fixed with slip teeth. Since the existing jaws only have a short length when they are in action, the force application area is small and it is easy to pinch. In the process of moving down, it is not easy to control the falling speed and falling direction by the gravity of the oil pipe itself, which will cause the radial displacement of the oil pipe, which is not conducive to the butt joint of the oil pipe, so the installation efficiency is low

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