ATPM-I type oil tube and sleeve sealing connection device, pipe and coupling

Abstract

The invention discloses an ATPM-I type oil tube and sleeve sealing connection device, a pipe and a coupling, and relates to the technical field of sealing. The ATPM-I type oil tube and sleeve sealing connection device is structurally characterized by comprising the pipe and the coupling; the two ends of the pipe body are symmetrically provided with male buckles, and the two ends of the coupling are symmetrically provided with female buckles; the end faces of the ends of the annular extending-out parts of the male buckles form inclined step faces, sealing faces and external threads are sequentially arranged on the outer lateral faces of the ends of the annular extending-out parts of the male buckles from the ends inwards, and conic transition faces are arranged on the inner lateral walls of the annular extending-out parts; the annular extending-out parts of the male buckles are tightly screwed into inner ring cavities of the female buckles. The ATPM-I type oil tube and sleeve sealing connection device is good in sealing performance and high in strength of extension, and is suitable for sealing and leakage prevention at a connector of the pipe under bad geological conditions.

Description

technical field [0001] The invention relates to the field of sealing technology, in particular to an ATPM-I (Antai Petroleum Machinery-1) oil pipe and casing sealing connection device, pipe body and coupling, which are suitable for oil pipe and casing under severe geological conditions Leak-proof seals at pipe joints. Background technique [0002] Nowadays, the tightness requirements for deeper oil and gas wells to pipeline connections are constantly increasing. At present, pipe collars are generally used to directly process threaded connections. . [0003] Traditional API threads have problems such as airtightness and tensile strength. Traditional API threads have poor gas-tight performance, and are not suitable for wells containing hydrogen sulfide, carbon dioxide, and chloride ions. At present, there is a need for a method that can be applied to traditional API threads. Sealing device adapted to the well location. Contents of the invention [0004] In view of the abo...

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Problems solved by technology

[0003] Traditional API threads have problems such as airtightness and tensile strength. Traditional API threads have poor gas-tight performance, and are not suitable for wells containing hydrogen sulfide, carbon dioxide, and chloride ions. At present, there is a need for a method that can be applied to traditional API threads. Sealing device adapted to the well location

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