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Oil extraction wellhead sealing device

A technology of sealing device and sealing ring, which is applied in the directions of sealing/isolation, earthwork drilling, wellbore/well parts, etc. It can solve the problems of incomplete sealing and inability to display the verticality of the polished rod in real time, so as to improve the smoothness and facilitate the use , to avoid the effect of splashing around

Active Publication Date: 2021-08-03
JINHU FUYUAN MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing oil production wellhead sealing device uses a centralizer to stabilize the polished rod when it is inserted, so as to reduce the incomplete sealing caused by the deflection of the polished rod during insertion, but the existing The verticality of the polished rod cannot be displayed in real time, and the centralizer may not completely straighten the polished rod, resulting in incomplete sealing. Therefore, we propose an oil production wellhead sealing device

Method used

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  • Oil extraction wellhead sealing device
  • Oil extraction wellhead sealing device
  • Oil extraction wellhead sealing device

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Embodiment Construction

[0032] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0033] Such as figure 1 As shown, the oil production wellhead sealing device includes: a sealing device housing 1, a slag removal tray 5 and a spirit level 19, the interior of the sealing device housing 1 is pierced with a polished rod 25, the spirit level 19 is fixed below the polished rod 25, and the left and right sides of the level meter 19 A connecting plate 16 is installed on both sides, and a sliding part 17 is installed on the side of the connecting plate 16 close to the level 19. The inside of the sliding part 17 is connected with a sealed air bag 18, and a moving slide rail is provided at the connection between the sliding part 17 and the connecting plate 1...

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Abstract

The invention relates to an oil extraction wellhead sealing device which comprises a sealing device shell, a slag removal disc and a gradienter; a polished rod is arranged in the sealing device shell in a penetrating mode; the gradienter is fixed to the lower portion of the polished rod; connecting plates are installed on the left side and the right side of the gradienter correspondingly; sliding parts are installed on the sides, close to the gradienter, of the connecting plates; a sealing air bag is connected with the interiors of the sliding parts; a movable sliding rail is arranged at joints of the sliding parts and the connecting plates; and an inflation pipe is connected with the upper portion of the sealing air bag. According to the oil extraction wellhead sealing device, the gradienter is adopted to monitor the perpendicularity of the polish rod in real time and transmit data to a PLC, the PLC can control a centralizer to work according to received data, the position of the polish rod is adjusted, and the situation that the polish rod is in a vertical state is guaranteed, so that the situation that the polish rod is inclined, and sealing is not thorough is avoided; and in addition, through the arrangement of the slag removal disc, waste scraps and waste residues generated on the surface of the polished rod can be cleaned.

Description

technical field [0001] The invention relates to an oil production well head sealing device, belonging to the technical field of oil production wells. Background technique [0002] Oil and natural gas are buried in oil and gas layers ranging from tens of meters to several thousand meters underground. To extract them, it is necessary to establish an oil and gas channel between the surface and the underground oil and gas layer. This channel is a well, which needs to be used at the head of the oil production well. The sealing device seals the connection between the oil production wellhead and the oil production equipment to avoid oil or natural gas leakage during the production process. Now the commonly used sealing device is a packing box, which is used to seal the wellhead of the oil pipe and the annular space of the polished rod. [0003] The existing oil production wellhead sealing device uses a centralizer to straighten the polished rod when it is inserted to reduce the inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/03
CPCE21B33/03
Inventor 殷义芳高秋云徐鹏
Owner JINHU FUYUAN MACHINERY
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