CN216157626U

CN216157626U - Simple pressurized wellhead plugging device

Info

Publication number: CN216157626U
Application number: CN202122152399.3U
Authority: CN
Inventors: 满春山
Original assignee: Daqing Jiayu Machinery Manufacturing Co ltd
Current assignee: Daqing Jiayu Machinery Manufacturing Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-04-01
Anticipated expiration: 2031-09-07

Abstract

The utility model discloses a simple pressurized wellhead plugging device, which comprises an oil well, wherein an insertion pipe is inserted into an upper port of the oil well, a mounting plate is arranged at the lower end of the insertion pipe, the mounting plate is fixedly connected with a fixing ring at the upper end of the oil well through a circular arc-shaped fixing sleeve, an expansion plug is sleeved at one end of the insertion pipe, which is positioned at the inner side of the oil well, a movable sleeve is sleeved at the upper side of the expansion plug, the expansion plug is extruded and expanded by the movable sleeve, the insertion pipe is inserted into the oil well when the wellhead of the oil well is plugged, the insertion pipe is fixedly connected with the oil well through the fixing sleeve, and the expansion plug is extruded and expanded by driving the movable sleeve, so that better sealing is realized, and the plugging device is more convenient for plugging and sealing the wellhead.

Description

Simple pressurized wellhead plugging device

Technical Field

The utility model relates to the technical field of wellhead plugging, in particular to a simple wellhead plugging device with pressure.

Background

The oil well is a hole drilled by a well drilling method, after an oil layer is drilled, an oil layer casing pipe is put into the oil layer casing pipe, oil well cement is injected into an annular space between the casing pipe and the well wall to maintain the well wall and seal an oil, gas and water layer, and a well mouth needs to be plugged to avoid a blowout phenomenon in the oil well.

The sealing difficulty of the existing oil well plugging device in the plugging process of an oil well is high, and the well mouth cannot be well plugged and sealed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a simple wellhead plugging device with pressure, aiming at solving the problem that the existing oil well plugging device has high sealing difficulty when an oil well is plugged.

The utility model is realized by the following steps:

the utility model provides a simple and easy area is pressed well head plugging device, including the oil well, the intubate has been inserted to the upper port of oil well ann, the lower extreme of intubate is provided with the mounting panel, and the mounting panel passes through the retainer plate fixed connection of convex fixed cover with the upper end of oil well, the pot head that the intubate is located the inboard of oil well is equipped with the inflation stopper, and the upside position cover that the intubate is located the inflation stopper is equipped with the movable sleeve, the movable sleeve extrudees the inflation stopper, when carrying out the shutoff to the well head of oil well, with intubate ann in the oil well, and with intubate and oil well fixed connection through fixed cover, thereby extrude the inflation stopper through the drive movable sleeve and make its inflation realize better sealed, make plugging device sealed more convenient to the shutoff of well head.

Furthermore, the lower end of the insertion pipe is provided with a baffle plate for limiting and blocking the expansion plug, the insertion pipe is provided with an annular groove matched with the expansion plug, the limiting and blocking of the expansion plug are achieved through the arranged baffle plate, and the expansion plug is fixedly installed through the arranged annular groove.

Furthermore, the upper end of the movable sleeve is provided with a guide sleeve matched with the inner diameter of the oil well, the lower end of the movable sleeve is provided with a conical head, a jacking screw which is tightly jacked on the movable sleeve is screwed on the mounting plate, the movable sleeve realizes movable guiding in the oil well through the guide sleeve, and extrusion and expansion of the expansion plug are realized through the conical head.

Furthermore, the periphery of the outer side of the expansion plug is provided with clamping edges which are uniformly arranged, the upper end face of the expansion plug is provided with a sleeve opening matched with the conical head, the expansion plug is tightly attached to the inner wall of the oil well in a sealing mode through the clamping edges, and the expansion plug is matched with the conical head in an expansion mode through the arranged sleeve opening.

Further, the upside of fixed cover is provided with the roof, and the roof top spin has twisted a plurality of locking screws, and the downside of fixed cover is provided with hangs the limit on the retainer plate, realizes the spacing fixed to retainer plate and mounting panel through roof and string limit to it is fixed to lock through locking screws.

Compared with the prior art, the utility model has the beneficial effects that:

when the wellhead of the oil well is plugged, the insertion pipe is inserted into the oil well, the insertion pipe is fixedly connected with the oil well through the fixed sleeve, and the expansion plug is extruded by driving the movable sleeve to expand so as to realize better sealing, so that the plugging device is more convenient for plugging and sealing the wellhead.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a perspective view of a simple wellhead plugging device with pressure according to the present invention;

FIG. 2 is a cross-sectional view of a simple pressurized wellhead plugging device of the present invention;

FIG. 3 is a schematic view of a movable sleeve of the simple wellhead plugging device with pressure, which is disclosed by the utility model;

FIG. 4 is a schematic view of an expansion plug of the simple pressurized wellhead plugging device;

fig. 5 is a schematic view of the fixing sleeve of the simple wellhead plugging device with pressure, which is disclosed by the utility model.

In the figure: 1. inserting a tube; 2. fixing a sleeve; 21. a top plate; 22. locking screws; 23. hanging edges; 3. an oil well; 4. mounting a plate; 5. a stationary ring; 6. jacking the screw tightly; 7. a movable sleeve; 71. a guide sleeve; 72. a conical head; 8. an expansion plug; 81. edging; 82. looping; 9. and a baffle plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.

Embodiment 1, please refer to fig. 1 and 2 specifically, a simple pressurized wellhead plugging device includes an oil well 3, an insertion tube 1 is inserted into an upper port of the oil well 3, a mounting plate 4 is arranged at a lower end of the insertion tube 1, the mounting plate 4 is fixedly connected with a fixing ring 5 at an upper end of the oil well 3 through a circular arc-shaped fixing sleeve 2, an expansion plug 8 is sleeved at one end of the insertion tube 1 located at an inner side of the oil well 3, a baffle 9 for limiting and blocking the expansion plug 8 is arranged at a lower end of the insertion tube 1, an annular groove matched with the expansion plug 8 is arranged on the insertion tube 1, the limiting and blocking of the expansion plug 8 are realized through the arranged baffle 9, the installation and fixation of the expansion plug 8 are realized through the arranged annular groove, a movable sleeve 7 is sleeved at an upper side position of the insertion tube 1 located at the expansion plug 8, and the movable sleeve 7 extrudes and expands the expansion plug 8.

Specifically referring to fig. 3, the upper end of the movable sleeve 7 is provided with a guide sleeve 71 matched with the inner diameter of the oil well 3, the lower end of the movable sleeve 7 is provided with a conical head 72, a jacking screw 6 tightly jacked on the movable sleeve 7 is screwed on the mounting plate 4, the movable sleeve 7 realizes movable guiding in the oil well 3 through the guide sleeve 71, and extrusion and expansion of the expansion plug 8 are realized through the conical head 72.

Specifically, referring to fig. 4, the outer circumferential surface of the expansion plug 8 is provided with clamping edges 81 which are uniformly arranged, the upper end surface of the expansion plug 8 is provided with a sleeve opening 82 which is matched with the conical head 72, the expansion plug 8 realizes the sealing close contact with the inner wall of the oil well 3 through the clamping edges 81, and the expansion plug 8 realizes the expansion matching with the conical head 72 through the arranged sleeve opening 82.

Specifically, as shown in fig. 5, a top plate 21 is arranged on the upper side of the fixing sleeve 2, a plurality of locking screws 22 are screwed on the top plate 21, a hanging edge 23 hung on the fixing ring 5 is arranged on the lower side of the fixing sleeve 2, the fixing ring 5 and the mounting plate 4 are limited and fixed through the top plate 21 and the hanging edge 23, and the fixing ring and the mounting plate are locked and fixed through the locking screws 22, so that the fixed connection between the insertion tube 1 and the oil well 3 is more convenient, and the installation of the plugging device is more convenient.

The working principle is that when a wellhead of an oil well 3 is plugged, the insertion pipe 1 is inserted into the oil well 3, then the fixed sleeve 2 is sleeved on the outer sides of the mounting plate 4 and the fixed ring 5 to be connected, then the jacking screw 6 is screwed to jack the movable sleeve 7 to move downwards, and when the conical head 72 at the lower end of the movable sleeve 7 is inserted into the sleeve opening 82, the expansion plug 8 is expanded and pressed on the inner wall of the oil well 3 to complete sealing.

The device obtained by the design can basically meet the requirement of convenient sealing of the existing oil well plugging device in the plugging of the oil well, but the designer further improves the device with the aim of further improving the function.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a simple and easy area is pressed well head plugging device, includes oil well (3), its characterized in that: intubate (1) has been inserted to the last port of oil well (3), the lower extreme of intubate (1) is provided with mounting panel (4), and mounting panel (4) through fixed cover (2) of convex and retainer plate (5) fixed connection of the upper end of oil well (3), the pot head that intubate (1) is located the inboard of oil well (3) is equipped with inflation stopper (8), and the upside position cover that intubate (1) is located inflation stopper (8) is equipped with movable sleeve (7), extrusion inflation is carried out to inflation stopper (8) in movable sleeve (7).

2. The simple pressurized wellhead plugging device according to claim 1, characterized in that the lower end of the insertion pipe (1) is provided with a baffle plate (9) for limiting and blocking the expansion plug (8), and the insertion pipe (1) is provided with an annular groove matched with the expansion plug (8).

3. The simple wellhead plugging device with pressure according to claim 1, characterized in that the upper end of the movable sleeve (7) is provided with a guide sleeve (71) matched with the inner diameter of the oil well (3), the lower end of the movable sleeve (7) is provided with a conical head (72), and the mounting plate (4) is screwed with a tightening screw (6) which is tightened on the movable sleeve (7).

4. The simple pressurized wellhead plugging device according to claim 1, characterized in that the outer circumference of the expansion plug (8) is provided with clamping edges (81) which are uniformly arranged, and the upper end surface of the expansion plug (8) is provided with a sleeve opening (82) which is matched with the conical head (72).

5. The simple wellhead plugging device with pressure as claimed in claim 1, characterized in that a top plate (21) is arranged on the upper side of the fixing sleeve (2), a plurality of locking screws (22) are screwed on the top plate (21), and a hanging edge (23) hung on the fixing ring (5) is arranged on the lower side of the fixing sleeve (2).