Sealing structure for butt joint of oil pipes

Abstract

The invention discloses a sealing structure for butt joint of oil pipes, and belongs to the field of oil pipe sealing. The sealing structure for butt joint of the oil pipes comprises the two oil pipes, wherein an expansion ball is installed at the inner side of the oil pipe at the left side, the oil pipe at the left side is sleeved with a mounting sleeve, and the inner wall of the mounting sleeve makes contact with the oil pipe at the left side in an attached manner; a connecting pipe is inserted into one end of the oil pipe at the right side, the left end of the connecting pipe is inserted into the inner side of the oil pipe at the left side and makes contact with the expansion ball, a fixing pipe is integrally formed on the outer side of the connecting pipe, and the left end of the fixing pipe extends to the inner side of the mounting sleeve and is in threaded connection with the mounting sleeve; and the oil pipe at the left side is located between the fixing pipe and the connecting pipe and makes contact with the fixing pipe and the connecting pipe. According to the sealing structure, butt joint gaps are sealed, so that the sealing effect is improved; and meanwhile, connection between a butt joint structure and the oil pipes can be facilitated; and compared with a butt joint mode for traditional flexible oil pipes, the connection stability is improved, and the falling-off possibility is reduced.

Description

technical field [0001] The invention relates to the field of oil pipe sealing, and more specifically relates to a sealing structure for butt jointing of oil pipes. Background technique [0002] The oil pipe is a pipeline that transports crude oil and natural gas from the oil and gas layer to the surface after the drilling is completed. It is used to withstand the pressure generated during the mining process. Gas leak. [0003] However, in order to ensure the sealing effect, the existing oil pipe sealing structure is often equipped with multi-layer sealing facilities, which means that the installation steps are complicated, resulting in too cumbersome setting of the sealing structure, and the simple and convenient sealing structure often has insufficient sealing ability and cannot be applied Due to the high-pressure environment, a sealing structure for oil pipe butt joint is proposed to solve the above-mentioned problems. Contents of the invention [0004] Aiming at the p...

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Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the object of the present invention is to provide a sealing structure for the butt joint of oil pipes, so as to solve the problems of cumbersome setting of the sealing structure and insufficient sealing effect

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