CN219393853U

CN219393853U - Wellhead traversing device structure

Info

Publication number: CN219393853U
Application number: CN202320984962.XU
Authority: CN
Inventors: 刘波; 蔡文; 刘彬
Original assignee: Tianjin Bopu Energy Technology Co ltd
Current assignee: Tianjin Bopu Energy Technology Co ltd
Priority date: 2023-04-27
Filing date: 2023-04-27
Publication date: 2023-07-21
Anticipated expiration: 2033-04-27

Abstract

The utility model discloses a wellhead crossing device structure which comprises a crossing device body, a cable plug and a joint sealing assembly which is divided into two parts and is fixed on the outer surfaces of the crossing device body and the cable plug for sealing. According to the wellhead traversing device designed by the utility model, the joint sealing component is arranged at the cable joint of the cable plug and the traversing device, so that the first sealing of the joint is realized by utilizing the sealing ring between the inner threaded sleeve and the outer threaded sleeve to prevent high-temperature gas or liquid from entering the traversing device in order to solve the problem of gaps existing after the joint and the plug are connected; after the inner threaded sleeve and the outer threaded sleeve are connected with each other, the high-temperature-resistant gasket and the high-temperature-resistant sealing ring are in close contact, and the high-temperature-resistant sealing ring is clamped into the annular groove in the high-temperature-resistant gasket, so that the second sealing at the gap is realized.

Description

Wellhead traversing device structure

Technical Field

The utility model relates to the technical field of traversing device equipment, in particular to a wellhead traversing device structure.

Background

For an electric submersible pump, the working power supply of the electric submersible pump needs to be connected with the electric submersible pump through a cable, but the working power supply is located on the ground, and the electric submersible pump is located underground, so that the cable needs to pass from the ground to the underground from the wellhead, and a wellhead traversing device is needed.

When the oil well works, the pressure above the wellhead is atmospheric pressure, the temperature is ambient temperature, the annular pressure below the wellhead is about 1MPa, and the temperature can reach about 180 ℃, and at this time, the wellhead traversing device must work at high temperature and high pressure. However, the wellhead penetrator with the existing structure is not ideal in terms of temperature resistance and pressure resistance, and especially when blowout occurs, the wellhead penetrator is prone to seal failure due to instantaneous high pressure.

Therefore, the structure of the wellhead traversing device is required to be optimally designed, the high temperature resistance and the sealing performance of the wellhead traversing device are improved, and the sealing reliability of the wellhead traversing device is ensured when blowout occurs.

Disclosure of Invention

The utility model aims to provide a wellhead traversing device structure for solving the defects in the background art. In order to achieve the above object, the present utility model provides the following technical solutions:

the connector sealing assembly is divided into two parts and is fixed on the outer surfaces of the crossing device body and the cable plug for sealing;

the joint sealing assembly comprises a sleeve for fixing the outer ring of the traversing device body, an annular rotating connecting piece rotationally connected to the side wall of one side of the sleeve, and an internal thread sleeve fixed to the other side of the annular rotating connecting piece, wherein a high-temperature-resistant gasket is fixed on the side wall of one side, facing the cable plug, of the annular rotating connecting piece;

the connector sealing assembly further comprises an external threaded sleeve fixed on the side wall of the outer ring of the cable plug and a high-temperature-resistant sealing ring arranged on one side of the external threaded sleeve, facing the traversing device body.

As a preferable scheme of the utility model, an armored protective shell is fixed in the inner cavity of the crossing device body, an electric wire harness is wrapped in the armored protective shell, and two ends of the harness are provided with an upper cable connector and a lower cable connector.

As a preferable scheme of the utility model, the side wall of the inner cavity of the internal thread sleeve is provided with screw threads, and the outer ring surface of the external thread sleeve is provided with screw threads which are matched with the screw threads of the inner cavity of the internal thread sleeve.

As a preferable scheme of the utility model, an annular groove is formed on one side surface of the high-temperature-resistant gasket facing the cable plug, and the high-temperature-resistant sealing ring is clamped into the annular groove in the high-temperature-resistant gasket facing one side surface of the joint sealing assembly.

In a preferred scheme of the utility model, a jack terminal which is matched with the connector on the cable for connection is arranged in the inner cavity of the cable plug.

As a preferable scheme of the utility model, the side wall of the inner cavity non-threaded section of the internal threaded sleeve is provided with a sealing ring, and the inner side surface of the sealing ring is tightly contacted with the outer ring non-threaded section surface of the external threaded sleeve.

As a preferable scheme of the utility model, the high-temperature resistant gasket and the high-temperature resistant sealing ring are both made of high-temperature resistant materials, and the high-temperature resistant temperature is 300-400 ℃.

In the technical scheme, the utility model has the technical effects and advantages that:

according to the wellhead traversing device designed by the utility model, the joint sealing component is arranged at the cable joint of the cable plug and the traversing device, so that the first sealing of the joint is realized by utilizing the sealing ring between the inner threaded sleeve and the outer threaded sleeve to prevent high-temperature gas or liquid from entering the traversing device in order to solve the problem of gaps existing after the joint and the plug are connected; after the inner threaded sleeve and the outer threaded sleeve are connected with each other, the high-temperature-resistant gasket and the high-temperature-resistant sealing ring are in close contact, and the high-temperature-resistant sealing ring is clamped into the annular groove in the high-temperature-resistant gasket, so that the second sealing of the gap is realized, and the problem that high-temperature oil gas enters into the traversing device along the gap existing after the connection between the connector and the plug and further damages the cable can be solved by means of the sealing components.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is an exploded schematic view of a wellhead penetrator and a cable plug;

FIG. 2 is a schematic illustration of an assembled wellhead penetrator with a cable plug;

FIG. 3 is an exploded schematic view of a portion of a seal assembly on a wellhead penetrator;

fig. 4 is an enlarged schematic view of area a of fig. 1 (partial seal assembly on cable connector).

Reference numerals illustrate:

1. a penetrator body; 2. a joint seal assembly; 21. a sleeve; 22. an annular rotary connecting member; 23. an internally threaded sleeve; 24. a high temperature resistant gasket; 25. an externally threaded sleeve; 26. high temperature resistant sealing ring; 3. a cable plug; 4. a cable upper joint; 5. an armor protective shell; 6. and a cable lower connector.

Detailed Description

In order to make the explanation and the description of the technical solution and the implementation of the present utility model clearer, several preferred embodiments for implementing the technical solution of the present utility model are described below.

The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, or uses. It should be understood that throughout the drawings, the same or similar reference numerals indicate the same or similar parts and features. The drawings merely schematically illustrate the concepts and principles of embodiments of the disclosure and do not necessarily illustrate the specific dimensions and proportions of the various embodiments of the disclosure. Specific details or structures of embodiments of the present disclosure may be shown in exaggerated form in particular drawings, various publications, patents and published patent specifications cited herein are incorporated herein by reference in their entirety and below are set forth in detail the embodiments of the present utility model, which are obviously only a few embodiments of the present utility model.

Examples

Reference is made to the accompanying drawings of the specification from fig. 1 to fig. 4;

a wellhead traversing device structure:

the embodiment comprises the following steps:

the connector sealing assembly 2 is divided into two parts and is fixed on the outer surfaces of the traversing device body 1 and the cable plug 3 for sealing;

the joint sealing assembly 2 comprises a sleeve 21 fixed on the outer ring of the traversing device body 1, an annular rotary connecting piece 22 rotatably connected to the side wall of one side of the sleeve 21, and an internally threaded sleeve 23 fixed on the other side of the annular rotary connecting piece 22, wherein a high-temperature-resistant gasket 24 is fixed on the side wall of one side of the annular rotary connecting piece 22 facing the cable plug 3; the joint sealing assembly 2 further comprises an external threaded sleeve 25 fixed on the outer ring side wall of the cable plug 3, and a high-temperature resistant sealing ring 26 arranged on the side of the external threaded sleeve 25 facing the traversing device body 1.

Specifically, after the inner/outer threaded sleeves are connected with each other, the high-temperature-resistant gasket 24 and the high-temperature-resistant sealing ring 26 are in close contact, and the high-temperature-resistant sealing ring 26 is clamped into the annular groove inside the high-temperature-resistant gasket 24, so that the second sealing of the gap is realized, and the sealing components can be used for preventing high-temperature oil gas from entering the traversing device along the gap existing after the connection between the connector and the plug.

An armored protective shell 5 is fixed in the inner cavity of the crossing device body 1, an electric wire harness is wrapped in the armored protective shell 5, and two ends of the harness are provided with an upper cable connector 4 and a lower cable connector 6.

The inner cavity side wall of the inner threaded sleeve 23 is provided with threads, and the outer ring surface of the outer threaded sleeve 25 is provided with threads which are matched with the threads of the inner cavity of the inner threaded sleeve 23.

An annular groove is formed in the surface of the high-temperature-resistant gasket 24 facing the cable plug 3, and the high-temperature-resistant sealing ring 26 is clamped into the annular groove in the high-temperature-resistant gasket 24 facing the surface of the connector sealing assembly 2.

The inner cavity of the cable plug 3 is provided with jack terminals which are mutually matched with the cable upper connector 4 for connection.

A seal ring is provided on the inner cavity non-threaded segment side wall of the internally threaded sleeve 23, and the inner side surface of the seal ring is in close contact with the outer ring non-threaded segment surface of the externally threaded sleeve 25.

Specifically, through the cooperation connection of the internal thread sleeve 23 and the external thread sleeve 25, the sealing ring between the internal thread sleeve 23 and the external thread sleeve is utilized to realize the first sealing of the gap, so that high-temperature gas or liquid is prevented from entering the inside of the crossing device.

The high-temperature resistant gasket 24 and the high-temperature resistant sealing ring 26 are both made of high-temperature resistant materials, and the high-temperature resistant temperature is 300-400 ℃.

In the description of the present utility model, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly specified or limited otherwise; the term "plurality" means two or more, unless specified or indicated otherwise; the terms "coupled," "secured," and the like are to be construed broadly, and may be used, for example, in a fixed or removable connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, it should be understood that the terms "upper," "lower," "left," "right," and the like in the embodiments of the present application are described in terms of angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In the context of this document, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on the other element or be indirectly on the other element through intervening elements.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims

1. A wellhead traversing device structure, which is characterized in that: comprises a crossing device body (1) and a cable plug (3), and a joint sealing component (2) which is divided into two parts and is fixed on the outer surfaces of the crossing device body (1) and the cable plug (3) for sealing;

the joint sealing assembly (2) comprises a sleeve (21) fixed on the outer ring of the traversing device body (1), an annular rotating connecting piece (22) rotatably connected to the side wall of one side of the sleeve (21), and an internal thread sleeve (23) fixed on the other side of the annular rotating connecting piece (22), wherein a high-temperature-resistant gasket (24) is fixed on the side wall of one side, facing the cable plug (3), of the annular rotating connecting piece (22);

the connector sealing assembly (2) further comprises an external threaded sleeve (25) fixed on the outer ring side wall of the cable plug (3), and a high-temperature-resistant sealing ring (26) arranged on one side of the external threaded sleeve (25) facing the traversing device body (1).

2. A wellhead penetrator structure according to claim 1, wherein: an armored protection shell (5) is fixed in the inner cavity of the crossing device body (1), an electric wire harness is wrapped in the armored protection shell (5), and two ends of the harness are provided with an upper cable connector (4) and a lower cable connector (6).

3. A wellhead penetrator structure according to claim 1, wherein: the inner cavity side wall of the inner threaded sleeve (23) is provided with threads, and the outer ring surface of the outer threaded sleeve (25) is provided with threads which are matched with the threads in the inner cavity of the inner threaded sleeve (23).

4. A wellhead penetrator structure according to claim 1, wherein: an annular groove is formed in the surface, facing the cable plug (3), of the high-temperature-resistant gasket (24), and the high-temperature-resistant sealing ring (26) is clamped into the annular groove in the high-temperature-resistant gasket (24) towards the surface of one side of the joint sealing assembly (2).

5. A wellhead penetrator structure according to claim 1, wherein: the inner cavity of the cable plug (3) is provided with a jack terminal which is matched with the cable upper connector (4) for connection.

6. A wellhead penetrator structure according to claim 1, wherein: the inner cavity non-threaded section side wall of the inner threaded sleeve (23) is provided with a sealing ring, and the inner side surface of the sealing ring is in close contact with the outer ring non-threaded section surface of the outer threaded sleeve (25).

7. A wellhead penetrator structure according to claim 1, wherein: the high-temperature resistant gasket (24) and the high-temperature resistant sealing ring (26) are both made of high-temperature resistant materials, and the high-temperature resistant temperature is 300-400 ℃.