Slightly wettened double-tightened double-sealed double-adjusted well head device

Abstract

The invention relates to a slightly wettened double-tightened double-sealed double-adjusted well head device. The device mainly solves the problems that packings of existing well head devices are likely to leak, acquirement and addition of the packings are not convenient and the deviation adjustment range is small. The device is characterized in that a packing box pressing cap (7) is in threaded connection with the upper portion of a packing box (8), a pulling rod (5) is fixed to the packing box pressing cap (7), a groove is formed in the upper portion of the packing box pressing cap (7) and internally provided with a cotton felt pad (4), an oil cavity pressing cap (3) is in threaded connection with the outer side of the top of the packing box pressing cap (7), and an upper oil injection hole (2) is formed in the oil cavity pressing cap (3). The slightly wettened double-tightened double-sealed double-adjusted well head device has great sealing performance, more convenience is providedfor taking and adding the packings, the deviation adjustment range is wide, the lubricity is excellent, and wearing between the packings and smooth rods is reduced.

Description

technical field [0001] The invention relates to the field of oil fields, in particular to a micro-moisture, double-tight, double-sealed and double-adjustable wellhead device. Background technique [0002] The wellhead devices commonly used in oil fields generally need to have the functions of sealing and deviation adjustment at the same time, but the current wellhead sealing packing is poor in sealing performance, and it is easy to leak after long-term operation, and it takes time and effort to remove and add the packing at the same time; Small range. Contents of the invention [0003] In order to overcome the deficiencies of the existing wellhead packing, such as easy leakage, inconvenient removal and addition of packing, and small deviation adjustment range, the present invention provides a micro-moisture double-tight double-seal double-adjustment wellhead device, the micro-moisture double-tight double seal The double-adjustable wellhead device has good sealing performa...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the existing wellhead packing, such as easy leakage, inconvenient removal and addition of packing, and small deviation adjustment range, the present invention provides a micro-moisture double-tight double-seal double-adjustment wellhead device, the micro-moisture double-tight double seal The double-adjustable wellhead device has good sealing performance, easy to remove and add packing, wide range of deviation adjustment, good lubricity, and reduces the wear of packing and polished rod

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