Multiple thread rapid connection type well drilling water-proof (sand-proof) pipe

Abstract

The invention relates to a multiple thread rapid connection type well drilling water-proof (sand-proof) pipe. The multiple thread rapid connection type well drilling water-proof (sand-proof) pipe comprises two water-proof (sand-proof) pipe units, a male connector, a female connector, a plurality of locating blocks, a plurality of screws and a seal ring, the male connector is welded to one water-proof (sand-proof) pipe unit, the female connector is welded to the other water-proof (sand-proof) pipe unit, and the male connector is provided with multi-head saw-tooth-shaped taper outer threads; the female connector is provided with taper inner threads with the same number and tooth shapes as those of the male connectors; the outer threads of the male connector are screwed in the inner threads of the female connector. According to the multiple thread rapid connection type well drilling water-proof (sand-proof) pipe, the male connector is connected with the female connector through the large-lead multi-head taper outer threads and the large-lead multi-head taper inner threads, so that the assembly distance between the male connector and the female connector and the number of assembly rotating circles are reduced, and connection speed is increased. Therefore, the multiple thread rapid connection type well drilling water-proof (sand-proof) pipe has the advantages of being stable in connection, high in assembly speed, large in rigidity, good in seal effect, high in load resistant ability, safe in construction, short in period, long in aging, capable of being repeatedly used and the like.

Description

technical field [0001] The present invention relates to a drilling water-repelling (sand-repelling) pipe in oil exploration and oil exploitation in marine or desert areas, especially the connection mode and structure between unit pipes and unit pipes in such drilling water-repelling (sand-repelling) pipes , belonging to the technical field of oilfield equipment design and manufacture. Background technique [0002] At present, most of the drilling risers used in deep sea oil development are segmented risers with quick connectors. This kind of riser cannot meet the stability requirements of the wellhead of the oil well under the conditions of deep water depth, high wind and rough sea surface, complex geological conditions, and different well structures of each well. Frequent sloshing in the lower part of the pipe will reduce the stiffness of the manifold and reduce the sealing performance between the pipes, resulting in seawater leakage and immersion, seriously affecting the ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of slow connection speed, low rigidity, large sloshing and poor sealing performance of the drilling riser in the drilling and exploration process of the offshore oil field, as well as solve the problem of the collapse of the well wall after the first drilling and tripping in the desert area, the inability of the surface casing to be run in quickly or In case of problems such as lower than the predetermined depth, the present invention provides a multi-threaded quick-connect drilling water (sand) pipe

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