Method and device for mechanized workover rod and pipe straightening guide to remove and hang rings

Abstract

The invention discloses a method and device for rod tube centering and guiding and lifting ring disconnecting and hanging in mechanical well repair operation. The device comprises a lifting ring disconnecting and hanging and rod tube centering mechanism and a driving device used for providing rotation power for the lifting ring disconnecting and hanging and rod tube centering mechanism. The driving device is arranged on a wellhead platform and installed on one side, in linkage with a stand pipe to be lifted, of a wellhead, the driving device is perpendicular to a ligature, and the driving device itself can rotate. The device is installed on the side face, in linkage with the rod tube to be centered, of the wellhead, in the working process, a mechanical arm rotates to the ligature to perform centering and guiding, and after centering, the mechanical arm leaves from the ligature to return to the original place and wait for an instruction. The method and device are suitable for centering stand pipe of the wellhead and disconnecting and hanging a lifting ring in the mechanical operation, and it is ensured that the stand pipe smoothly runs into a well. The method and device have the advantages of being large in centering distance, sparing sufficient space for a traveling system and being small in investment, convenient to operate and the like.

Description

technical field [0001] The invention relates to a lifting ring in the mechanized operation of the petroleum industry, in particular to a method for straightening and guiding a rod and tube in mechanized workover operations to remove and hang a lifting ring; Background technique [0002] Since domestic mechanized drilling and workover are in the stage of indoor research, there are few reports on auxiliary devices for mechanized tripping and running of pipe strings. Literature search, in the master thesis of China University of Petroleum (East China) in 2006, "Research on the Control System of Automated Lifting and Lowering Pipe String Operation", related to the structural design of the righting manipulator to align the oil pipe and the wellhead during the process of lifting and lowering the tubing. The design is A manipulator is installed on the piston rod of the hydraulic cylinder, and the manipulator clamps the main oil pipe, and the oil pipe is aligned with the wellhead th...

AI Technical Summary

Problems solved by technology

In this way, the manipulator, hydraulic cylinder, wellhead and the oil pipe to be righted must be installed on the same line, and there are disadvantages such as small straightening distance, little space for the swimming system, dense auxiliary devices above the wellhead, and large investment.

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