Oil well casing repair tool and repairing method

Abstract

The invention discloses an oil well casing repairing tool and a repairing method. The oil well casing repairing tool comprises a first annular shell, a second annular shell and a smoke filtering module, wherein the left end of the first annular shell is rotationally connected with the second annular shell through a bearing, the first annular shell and the second annular shell are each of a hollow structure, a gear tooth ring is arranged at the left end of the second annular shell, a rotating power module is arranged on the upper side of the right portion of the first annular shell, first adjusting screws are in threaded connection with the upper side and the lower side of the circumferential face of the first annular shell, the opposite ends of the first adjusting screws penetrate through the first annular shell to be rotationally connected with arc-shaped limiting plates. The oil well casing repairing tool can be suitable for fixing and repairing materials of various diameters, the application range is wider, equipment movement is stable and smooth, the tool integrates flaw detection, cutting and welding, repairing can be completed at a time, tools do not need to be replaced frequently, assistance of a large number of personnel is not needed, functions are rich and practical, the working efficiency is greatly improved, and pollution to air can be reduced.

Description

technical field [0001] The invention relates to the technical field of oil well casing repair equipment, in particular to an oil well casing repair tool and a repair method. Background technique [0002] Oil Well Casing Casing is mainly used for the drilling of oil and gas wells and the transportation of oil and gas. Oil well casing is also used to connect drill collars and drill bits and transmit drilling power. The oil casing is also used to support the well wall during the drilling process and after the completion of the well to ensure the normal operation of the entire oil well after the drilling process and the completion of the well. In order to make annular parts with steel pipes, different well conditions and well depths require different steel grades; in corrosive environments, the casing itself is also required to have corrosion resistance, which is prone to damage during processing, use or transportation, and needs to be repaired used later. [0003] At present...

AI Technical Summary

Problems solved by technology

[0003] At present, the existing oil well casing is generally manually used for slow flaw detection. Due to the limitation of arm swing, the flaw detection is not comprehensive and the efficiency is low. When repairing, it is usually necessary to fix the oil well casing first, and then use a cutting tool to damage it. Cutting at the cutting point, taking new oil well casing for alignment and fixing welding, the process is complicated and time-consuming, requires a lot of equipment, cumbersome operations, and more auxiliary personnel, resulting in waste of human resources and low work efficiency

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