Oil casing plug

Abstract

The invention provides an oil casing plug. The oil casing plug comprises a plug shell body and an anti-theft boss. The plug shell body is in a cylinder shape, and outer threads are arranged on the side wall of the plug shell body. An upper sealing cover with stairs is arranged at the top end of the plug shell body. Both the upper stair and the lower stair of the upper sealing cover are in a circular shape, and a through hole is formed in the eccentric position of the upper sealing cover. The anti-theft boss is of a T shape, and comprises a limiting plate and a supporting column. The limiting plate is in a circular shape, the diameter of the limiting plate is shorter than that of the end face of the upper stair, the supporting column is arranged at the central position of the limiting plate, both the through hole and the supporting column are in a circular shape, the end portion penetrating through the through hole of the supporting column is rotatably connected with the plug shell body through a vertical limiting piece. The oil casing plug is simple in structure and convenient to use, and can meet the requirement for on-site anti-theft plug.

Description

technical field [0001] The invention belongs to the field of petroleum equipment, in particular to an anti-theft plug. Background technique [0002] In the process of oil development, due to construction needs such as well washing, pressure testing, and pipeline flushing, some screw holes for construction should be reserved in open oil pipes, oil gathering oil pipes, oil delivery oil pipes, etc., and these screw holes should be used when not in construction. The plugs are sealed to prevent the leakage of liquid and gas, because the plugs are easy to be removed, and the plugs are stolen from time to time, which not only seriously affects the normal production, but also causes the loss of crude oil and forms a large area of ​​crude oil pollution. The anti-theft plug currently in use can play a role in preventing theft to a certain extent, but it still cannot prevent theft. Therefore, a kind of oil casing plug that is not easy to remove is needed on site. Contents of the inve...

AI Technical Summary

Problems solved by technology

[0002] In the process of oil development, due to construction needs such as well washing, pressure testing, and pipeline flushing, some screw holes for construction should be reserved in open oil pipes, oil gathering oil pipes, oil delivery oil pipes, etc., and these screw holes should be used when not in construction. The plugs are sealed to prevent the leakage of liquid and gas, because the plugs are easy to be removed, and the plugs are stolen from time to time, which not only seriously affects the normal production, but also causes the loss of crude oil, resulting in large-scale crude oil pollution

The anti-theft plug currently in use can play a role in preventing theft to a certain extent, but it still cannot prevent theft. Therefore, an oil casing plug that is not easy to remove is needed on site.

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