Corrosion resistant multifunctional high-pressure well mouth apparatus

Abstract

The invention relates to a corrosion resistance multi-function high-pressure wellhead equipment. The technological project is that on the upper end of catch hoop a spherical base, a spherical pressure cap, more than one scavenging cavity, more than one scavenging pressure cap, an oil slot and an pressure cap are connected in turn and a smooth rod passes through them in turn; there are a ball in the spherical hollow cavity constituted by the spherical base and the spherical pressure cap; the upper scavenging cavity is connected with the lower scavenging cavity by locking screw cap to form said scavenging cavity; the upper scavenging cavity is cylinder structure and the lower scavenging cavity is cone structure. There are multiple packing in inner cavities of said upper and lower scavenging cavities; the appearance of said smooth rod is fixed with the protective case tightly by a connector. The benefit of invention is that there is a protective case on the appearance of smooth rod to play the role of wear resistance and corrosion resistance and the spherical seat has the adjusting deviation function to prevent the eccentric wear; the exchanging time for packing is shortened more effectively by two packing boxes while the demand of high-temperature and high-pressure resistance is achieved.

Description

1. Technical field:

[0001] The invention relates to a wellhead device for oil fields, in particular to a corrosion-resistant multifunctional high-pressure wellhead device. 2. Background technology:

[0002] At present, the problems existing in oilfield wellhead devices are: (1) the surface of the polished rod is easy to corrode, causing the wellhead to run, run, leak oil, and pollute the environment; (2) the consumption of packing is very large, which increases the cost of materials and the intensity of labor Big, and when removing the top wire, due to the high pressure, the top wire is easy to spray out, causing harm to the human body; (3) the power consumption is large, wasting energy. 3. Contents of the invention:

[0003] The purpose of the present invention is to provide a corrosion-resistant multifunctional high-pressure wellhead device that reduces the labor intensity of workers and reduces the incidence of accidents in view of the above-mentioned defects in the pri...

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