An oil production wellhead sealing protection device

A technology of sealing protection and sealing seat, applied in the directions of sealing/isolation, earth-moving drilling, drilling equipment, etc., it can solve the problems of poor sealing effect of polished rod sealing device and easy dirtiness of polished rods, so as to avoid blowout accidents and avoid failures. , the effect of improving efficiency

Active Publication Date: 2021-06-11
SHENGLI OILFIELD DONGFANG IND INVESTMENT GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides an oil production wellhead sealing and protection device, which solves the problems of poor sealing effect of the polished rod sealing device and easy contamination of the polished rod

Method used

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  • An oil production wellhead sealing protection device
  • An oil production wellhead sealing protection device
  • An oil production wellhead sealing protection device

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Embodiment

[0025] Such as Figure 1-6 As shown, the embodiment of the present invention provides a sealing and protection device for oil production wellhead, including a sealing seat 12, which realizes the first layer of sealing to the oil wellhead. The middle side of both sides is provided with a sliding chamber 24, the sliding chamber 24 is used for the hard spring 25 to push the arc rod 14, and the side wall of the middle part of the sealing seat 12 is provided with a pressure gauge 11, and the pressure gauge 11 is used for testing The pressure of the seal in the oil wellhead, the outer circumference of the upper end of the sealing seat 12 is threadedly connected with the connecting seat 10, the connecting seat 10 is used for the second sealing of the oil wellhead, the middle part of the connecting seat 10 runs through a polished rod 13 vertically, and the inner bottom of the connecting seat 10 A second sealing cavity 18 is formed between the sealing seat 12, and the inner bottom of t...

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Abstract

The invention provides an oil production wellhead sealing protection device, which relates to the field of oil production. The wellhead sealing protection device for oil production includes a sealing seat, a polished rod vertically penetrates the middle part of the sealing seat, a pressure gauge is provided on one side wall of the middle part of the sealing seat, and a second sealing chamber is provided at the inner bottom of the second sealing cavity. Two sealing rings, the second sealing ring is arranged on the outer periphery of the polished rod, the inner middle part of the connecting seat and the polished rod form a first sealing cavity, the inner bottom of the first sealing cavity is provided with a first sealing ring, the Both sides of the middle part at the top of the connecting seat are fixedly connected to the collection tank by positioning pins, and the middle part of the collection tank is vertically penetrated with a polished rod. The spinning wheel is driven by the pole to press the second sealing ring, the injection pipe injects the sealant into the second sealing cavity, the pressure wheel improves the sealing between the first sealing ring and the connecting seat, and the triple seal makes the oil well head The sealing effect is good, and the cleaning effect on the polished rod can be realized through the collecting tank and the degreasing ring, which is worthy of vigorous promotion.

Description

technical field [0001] The invention relates to the technical field of oil extraction, in particular to an oil extraction wellhead sealing protection device. Background technique [0002] With the discovery of petroleum resources, petroleum energy has gradually become more important. At the same time, the technology of petroleum exploitation is also constantly updated. Now there are various types of petroleum exploitation equipment, and the mainstream is still to use oil wells. According to statistics, the oil production of oil rods and oil wells occupies the largest share of mechanical oil production. At the same time, the use of wellhead polished rod sealing devices in oil rod oil well production equipment is even higher. [0003] When the existing polished rod sealing device is in use, the sealing ring is likely to fail during oil production, which reduces the oil recovery efficiency or may cause a blowout. If it is disassembled and repaired or the sealant is applied, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/03E21B47/06E21B17/00E21B41/00B08B1/00
CPCB08B1/002E21B17/006E21B33/03E21B41/0021E21B47/06
Inventor 庞兰霞
Owner SHENGLI OILFIELD DONGFANG IND INVESTMENT GRP CO LTD
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