CN217206402U - General type well head anti falling device - Google Patents

Abstract

The application discloses a universal wellhead anti-falling device, which comprises a pipe body and an anti-falling assembly, wherein the pipe body is vertically arranged on a wellhead, the upper end and the lower end of the pipe body are respectively provided with a first joint and a second joint, and the pipe body is provided with the anti-falling assembly; the first joint and the second joint are arranged on a wellhead and are respectively detachably connected with the pipe body, and the anti-falling assembly is detachably connected with the pipe body; the radial dimension of both ends is inequality about the body, and the radial dimension phase-match of the contact tip of first joint and second joint and body. By arranging the anti-falling assembly in the pipe body, the parts of a tester or other foreign matters are effectively prevented from falling into a well during monitoring, and the safety coefficient of work is improved; the radial sizes of the two ends of the pipe body are set to different sizes, the upper and lower positions of the first joint and the second joint are exchanged by vertically reversing the pipe body, or the first joint and the second joint with different sizes are replaced to realize the purpose of being applicable to wells with different sizes.

Description

General type well head anti falling device

Technical Field

The application relates to a general type well head anti-falling device belongs to oil field development technical field.

Background

The detection to the water injection well is also more and more frequent in the oil field development, because the imperfect of original equipment, the situation that the instrument drops into the well often takes place, the device that drops is invented after facing to such situation, but along with the renewal of instrument, need the ware of falling of multiple kinds, and current ware of falling of preventing function singleness, can not satisfy the production demand, and the volume is great, and weight is big, brings very big inconvenience for production, increased intensity of labour, also increased manufacturing cost.

SUMMERY OF THE UTILITY MODEL

In view of this, the application provides a general type well head anti falling device, and the concrete scheme is:

a universal wellhead anti-falling device, which comprises a pipe body and an anti-falling assembly,

the pipe body is vertically arranged on a wellhead, a first joint and a second joint are respectively arranged at the upper end and the lower end of the pipe body, and the pipe body is provided with an anti-falling assembly;

the first joint and the second joint are arranged on a wellhead, the first joint and the second joint are respectively detachably connected with the pipe body, and the anti-falling assembly is detachably connected with the pipe body;

the radial dimension at both ends is inequality about the body, the radial dimension phase-match of the link of first joint and second joint and body.

Optionally, the pipe body comprises a first connecting pipe and a second connecting pipe,

one end of the first connecting pipe is detachably connected with one end of the second connecting pipe, the other end of the first connecting pipe is in threaded connection with the first joint, and the other end of the second connecting pipe is in threaded connection with the second joint respectively;

and two opposite sides of the second connecting pipe are provided with through mounting holes.

Optionally, the anti-drop assembly comprises an anti-drop device shell, a shift lever and an anti-drop plate,

the anti-falling device shell is of a hollow cylinder structure, is positioned in the second connecting pipe and is detachably connected with the second connecting pipe;

the deflector rod is positioned in the through hole, penetrates through the anti-falling device shell and the second connecting pipe, is radially vertical to the second connecting pipe and is rotatably connected with the second connecting pipe;

the anti-falling plate is positioned in the anti-falling shell, and one end of the anti-falling plate is detachably connected with the shifting rod.

Optionally, one end of the deflector rod is provided with a sealing sleeve, the other end of the deflector rod is provided with a sealing cover and a handle,

the inner side and the outer side of the sealing sleeve and the sealing cover are respectively abutted with the deflector rod and the second connecting pipe;

the sealing cover and the handle are respectively positioned on the inner side and the outer side of the second connecting pipe, and the handle is fixedly connected with the shifting rod.

Optionally, a torsion spring is further arranged between the anti-falling plate and the anti-falling device shell,

and two ends of the torsion spring are respectively fixed at the middle position of the bottom of the anti-falling plate and on the anti-falling device body.

Optionally, a V-shaped groove is arranged on one side of the anti-falling plate away from the shifting lever, a torsion spring groove is arranged on one side of the anti-falling plate close to the shifting lever,

and one end of the torsion spring, which is positioned in the torsion spring groove, is fixed on the shifting lever.

Optionally, the two ends of the first connecting pipe and the second connecting pipe are respectively a male end and a female end,

the diameters of the male end and the female end are different, external threads are arranged on the outer side of the male end, and internal threads are arranged on the inner side of the female end;

and one ends of the first joint and the second joint, which are close to the first connecting pipe and the second connecting pipe, are provided with internal threads or external threads matched with the male end and the female end.

Compared with the prior art, the beneficial effect of this application lies in:

the device has simple structure and convenient assembly and disassembly, and is beneficial to replacement and storage.

All parts used by the device are high-strength and corrosion-resistant parts, so that the mechanical strength is high, the service life is long, the cost is saved, and the replacement frequency is reduced;

the anti-falling assembly is arranged in the pipe body, so that parts of a tester instrument or other foreign matters are effectively prevented from falling into a well when the well body is monitored, and the safety coefficient of work is improved;

this device sets up the radial size in both ends through with the body into different sizes, and the upper and lower position through with the body top-down reversal change first joint and second connect, perhaps realizes being applicable to not unidimensional well through changing not unidimensional first joint and second joint.

Drawings

FIG. 1 is a schematic cross-sectional view of a universal wellhead anti-drop device according to an embodiment of the present disclosure

Figure 2 is a left side view of one embodiment of the present general purpose wellhead fall arrestor device,

wherein, 1-a first connecting pipe, 2-a second connecting pipe, 3-a first joint, 4-a second joint, 5-an anti-falling component, 6-a deflector rod, 7-an anti-falling plate, 8-a V-shaped groove, 9-a sealing cover and 10-a handle

Detailed Description

The present application will be described in detail with reference to examples, but the present application is not limited to these examples.

A universal wellhead anti-fall device according to the drawings 1-2, comprising a tubular body and an anti-fall assembly 5,

the pipe body is vertically arranged on a wellhead, a first connector 3 and a second connector 4 are respectively arranged at the upper end and the lower end of the pipe body, and an anti-falling assembly 5 is arranged on the pipe body;

the first connector 3 and the second connector 4 are installed on a wellhead, the first connector 3 and the second connector 4 are respectively detachably connected with the pipe body, and the anti-falling assembly 5 is detachably connected with the pipe body;

the radial dimension at both ends is inequality about the body, the radial dimension phase-match of the link of first joint 3 and second joint 2 and body.

In one embodiment of the present invention, the pipe body comprises a first connection pipe 1 and a second connection pipe 2,

one end of the first connecting pipe 1 is detachably connected with one end of the second connecting pipe 2, the other end of the first connecting pipe 1 is in threaded connection with the first connector 3, and the other end of the second connecting pipe is in threaded connection with the second connector 4 respectively;

and through mounting holes are formed in two opposite sides of the second connecting pipe 2.

In one embodiment of the present invention, the anti-falling assembly 5 comprises an anti-falling device housing 11, a shift lever 6 and an anti-falling plate 7,

the anti-falling device shell 11 is of a hollow cylinder structure, the anti-falling device shell 11 is positioned in the second connecting pipe 2, and the anti-falling device shell 11 is detachably connected with the second connecting pipe 2;

the deflector rod 6 is positioned in the through hole, the deflector rod 6 penetrates through the anti-falling device shell 11 and the second connecting pipe 2, and the deflector rod 6 is radially vertical to the second connecting pipe 2 and is rotatably connected with the second connecting pipe 2;

the anti-falling plate 7 is positioned in the anti-falling device shell 11, and one end of the anti-falling plate 7 is detachably connected with the shifting rod 6.

It should be noted that the anti-drop device shell 11 is a through cavity structure which is axially arranged, the anti-drop device shell 11 is connected with the second connecting pipe 2 through screws/bolts, and sealing treatment is performed on the connecting parts; the falling-preventing plate 7 is in clearance fit with the inner side of the falling-preventing device shell 11.

In one embodiment of the utility model, one end of the deflector rod 6 is provided with a sealing sleeve, the other end of the deflector rod 6 is provided with a sealing cover 9 and a handle 10,

the inner side and the outer side of the sealing sleeve and the sealing cover 9 are respectively abutted with the deflector rod 6 and the second connecting pipe 2;

the sealing cover 9 and the handle 10 are respectively positioned at the inner side and the outer side of the second connecting pipe 2, and the handle 10 is fixedly connected with the deflector rod 6.

In one embodiment of the utility model, a torsion spring is arranged between the anti-falling plate 7 and the anti-falling device shell 11,

and two ends of the torsion spring are respectively fixed at the middle position of the bottom of the anti-falling plate 7 and on the anti-falling device body.

In one embodiment of the utility model, a V-shaped groove 8 is arranged on one side of the falling-preventing plate 7 away from the deflector rod 6, a torsion spring groove is arranged on one side of the falling-preventing plate 7 close to the deflector rod 6,

and one end of the torsion spring, which is positioned in the torsion spring groove, is fixed on the deflector rod 6.

In one embodiment of the present invention, the two ends of the first connecting pipe 1 and the second connecting pipe 2 are a male end and a female end respectively,

the diameters of the male end and the female end are different, external threads are arranged on the outer side of the male end, and internal threads are arranged on the inner side of the female end;

and one ends of the first connector 3 and the second connector 4, which are close to the first connecting pipe 1 and the second connecting pipe 2, are provided with internal threads or external threads matched with the male end and the female end.

It should be noted that all parts of the universal wellhead anti-falling device in the application are high-strength and corrosion-resistant parts.

The utility model discloses a use does:

the utility model is arranged at a well mouth through a first joint 3 and a second joint 4, and the upper part of the first joint 3 is connected with the lubricator; the tester is arranged in the blowout preventer, a cable gate at the wellhead is opened, the anti-falling plate is pulled to ensure that the anti-falling plate 7 is vertical to the wellhead, and after the tester passes through the wellhead, the anti-falling plate is pulled back to the original position through the handle 10, namely the anti-falling plate 7 is parallel to the wellhead;

after the test is finished, the test instrument is lifted upwards, when the instrument reaches the wellhead cable gate and enters the blowout prevention pipe, the upper end of the instrument pushes the anti-falling plate 7 in the anti-falling device open, and the instrument enters the blowout prevention pipe. The anti-falling plate 7 instantly returns to the original position under the action of the torsion spring, namely, the anti-falling plate 7 is parallel to the well mouth. If the ground operation is wrong or the counter fails, the cable is pulled out, and the instrument falls on the anti-falling plate 7 in the anti-falling device body, so that the anti-falling effect is achieved. The instrument will fall into the blowout preventer above the wellhead cable gate, thereby preventing the instrument from falling into the well.

Although the present application has been described with reference to a few embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application as defined by the appended claims.

Claims (7)

1. A universal wellhead anti-falling device is characterized by comprising a pipe body and an anti-falling assembly (5),

the pipe body is vertically arranged at a well head, the upper end and the lower end of the pipe body are respectively provided with a first connector (3) and a second connector (4), and the pipe body is provided with an anti-falling assembly (5);

the first joint (3) and the second joint (4) are installed at a wellhead, the first joint (3) and the second joint (4) are respectively detachably connected with the pipe body, and the anti-falling assembly (5) is detachably connected with the pipe body;

the radial dimension at the upper end and the lower end of the pipe body is different, and the first joint (3) and the second joint (4) are matched with the radial dimension of the connecting end of the pipe body.

2. A universal wellhead fall protection device according to claim 1, characterized in that said pipe body comprises a first connection pipe (1) and a second connection pipe (2),

one end of the first connecting pipe (1) is detachably connected with one end of the second connecting pipe (2), the other end of the first connecting pipe (1) is in threaded connection with the first joint (3), and the other end of the second connecting pipe is in threaded connection with the second joint (4) respectively;

and through mounting holes are formed in two opposite sides of the second connecting pipe (2).

3. A universal wellhead anti-drop device according to claim 2 characterized in that the anti-drop assembly (5) comprises an anti-drop housing (11), a deflector rod (6) and an anti-drop plate (7),

the anti-falling device shell (11) is of a hollow cylinder structure, the anti-falling device shell (11) is positioned in the second connecting pipe (2), and the anti-falling device shell (11) is detachably connected with the second connecting pipe (2);

the shifting rod (6) is positioned in the through hole, the shifting rod (6) penetrates through the anti-falling device shell (11) and the second connecting pipe (2), and the shifting rod (6) is radially vertical to the second connecting pipe (2) and is rotatably connected with the second connecting pipe (2);

the anti-falling plate (7) is positioned in the anti-falling device shell (11), and one end of the anti-falling plate (7) is detachably connected with the shifting rod (6).

4. A universal wellhead anti-drop device according to claim 3 characterized in that one end of the deflector rod (6) is provided with a gland, the other end of the deflector rod (6) is provided with a gland (9) and a handle (10),

the inner side and the outer side of the sealing sleeve and the sealing cover (9) are respectively abutted with the deflector rod (6) and the second connecting pipe (2);

the sealing cover (9) and the handle (10) are respectively positioned on the inner side and the outer side of the second connecting pipe (2), and the handle (10) is fixedly connected with the shifting rod (6).

5. A universal wellhead anti-drop device according to claim 3 characterized in that a torsion spring is also provided between the anti-drop plate (7) and the anti-drop housing (11),

and two ends of the torsion spring are respectively fixed at the middle position of the bottom of the anti-falling plate (7) and on the anti-falling device body.

6. The universal wellhead anti-falling device according to claim 5, characterized in that one side of the anti-falling plate (7) far away from the deflector rod (6) is provided with a V-shaped groove (8), one side of the anti-falling plate (7) close to the deflector rod (6) is provided with a torsion spring groove,

and one end of the torsion spring, which is positioned in the torsion spring groove, is fixed on the deflector rod (6).

7. A universal wellhead anti-drop device according to claim 2 characterized in that the two ends of the first connecting pipe (1) and the second connecting pipe (2) are male end and female end respectively,

the diameters of the male end and the female end are different, external threads are arranged on the outer side of the male end, and internal threads are arranged on the inner side of the female end;

and one ends of the first connector (3) and the second connector (4) close to the first connecting pipe (1) and the second connecting pipe (2) are provided with internal threads or external threads matched with the male end and the female end.

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