CN218912846U

CN218912846U - Underground oil pipe plug

Info

Publication number: CN218912846U
Application number: CN202320611122.9U
Authority: CN
Inventors: 江源; 罗伟; 喻冰; 杨磊; 赖宁; 邓悟; 吴珂; 罗颖胜; 张勇; 王际晓; 何威利
Original assignee: Sichuan Shengnuo Oil And Gas Engineering Technology Service Co ltd
Current assignee: Sichuan Shengnuo Oil And Gas Engineering Technology Service Co ltd
Priority date: 2023-03-27
Filing date: 2023-03-27
Publication date: 2023-04-25
Anticipated expiration: 2033-03-27

Abstract

The utility model belongs to the technical field of oil and gas equipment, and discloses an underground oil pipe blanking plug, which comprises a blanking plug body, wherein a sealing cover plate is rotatably arranged at the lower end of the blanking plug body, a mounting column is convexly arranged on the sealing cover plate, an inflatable rubber cylinder is sleeved on the mounting column, a pressure balance hole is formed in the sealing cover plate, and the inflatable rubber cylinder is covered on the pressure balance hole; the blanking plug is internally provided with a battery pack and a driving assembly, the free end of the driving assembly is connected with a conical rod, and the conical rod is arranged opposite to the inflatable rubber cylinder. According to the underground oil pipe blanking plug provided by the utility model, the blanking plug body is arranged at the bottom of an oil pipe, the blanking plug body is directly put into a well along with the oil pipe, when a well needs to be opened, the driving assembly pushes the conical rod, the conical rod pierces the inflatable rubber cylinder, high-pressure fluid in the well passes through the pressure balance hole and upwards flows into the oil pipe at the upper part, and after the up-down pressure is close to balance, the conical rod pushes the sealing cover plate to be in a fully opened state, so that the well opening operation with the full drift diameter is completed.

Description

Underground oil pipe plug

Technical Field

The utility model belongs to the technical field of oil and gas equipment, and particularly relates to an underground oil pipe plug.

Background

Most of the existing mechanical plugs in the oil pipe are fed with artificial steel wires, the factors such as large size of the plugs in the descending process are difficult to descend to the design depth, the pressure of the plugging ground is difficult to exert, and a new plug is urgently needed to be designed for realizing the pressure operation of the gas production well.

Disclosure of Invention

The present utility model aims to solve the above technical problems at least to some extent. To this end, the present utility model aims to provide a downhole tubing plug.

The technical scheme adopted by the utility model is as follows:

the underground oil pipe blanking plug comprises a blanking plug body, wherein a sealing cover plate is rotatably arranged at the lower end of the blanking plug body, a mounting column is convexly arranged on the sealing cover plate, an inflatable rubber cylinder is sleeved on the mounting column, a pressure balance hole is formed in the sealing cover plate, and the inflatable rubber cylinder covers the pressure balance hole; the blanking plug is internally provided with a battery pack and a driving assembly, the free end of the driving assembly is connected with a conical rod, and the conical rod is arranged opposite to the inflatable rubber cylinder.

Preferably, the lower end of the blanking plug body is provided with an L-shaped plate, and a limiting elastic block is rotationally arranged on the L-shaped plate through a rotating shaft and a torsion spring; the L-shaped plate is concavely provided with a mounting groove, and the limiting elastic block is arranged in the mounting groove.

Preferably, a timer is arranged in the blanking plug body and is electrically connected with the driving component; the blanking plug body is provided with a signal receiver which is electrically connected with the driving component.

Preferably, the mounting column is arranged at the central position of the sealing cover plate, and the periphery of the mounting column is uniformly distributed on the circumference of the pressure balance hole.

Preferably, the driving assembly is an electric cylinder, and the electric cylinder is connected with the conical rod. Alternatively, the driving assembly comprises a hydraulic pump and a piston connected with the hydraulic pump, and the piston is connected with the cone rod.

The beneficial effects of the utility model are as follows:

according to the underground oil pipe blanking plug provided by the utility model, the blanking plug body is arranged at the bottom of an oil pipe, the blanking plug body is directly put into a well along with the oil pipe, when a well needs to be opened, the driving assembly pushes the conical rod, the conical rod pierces the inflatable rubber cylinder, high-pressure fluid in the well passes through the pressure balance hole and upwards flows into the oil pipe at the upper part, and after the up-down pressure is close to balance, the conical rod pushes the sealing cover plate to be in a fully opened state, so that the well opening operation with the full drift diameter is completed.

Drawings

FIG. 1 is a schematic view of a downhole tubing plug of the present utility model.

Fig. 2 is an enlarged view of a portion a in fig. 1.

In the figure: 1-a blanking plug body; 2-sealing the cover plate; 3-mounting posts; 4-inflating rubber cylinder; 5-a pressure balance hole; 6-battery pack; 7-a hydraulic pump; 8-a piston; 9-a conical rod; 10-L-shaped plates; 11-mounting slots; 12-rotating shaft; 13-limiting elastic blocks; 14-a timer; 15-signal receiver.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

In the description of the embodiments of the present utility model, it should be noted that, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship conventionally put in place when the product of the present utility model is used, or the orientation or positional relationship conventionally understood by those skilled in the art is merely for convenience of describing the present utility model and simplifying the description, and is not indicative or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements.

The utility model will be further described with reference to the drawings and specific examples.

As shown in fig. 1 and 2, the downhole oil pipe blanking plug of the embodiment comprises a blanking plug body 1 installed at the bottom of an oil pipe, wherein a through hole penetrating up and down is formed in the blanking plug body 1, a sealing cover plate 2 is rotatably installed at the lower end of the through hole of the blanking plug body 1, a mounting column 3 is convexly arranged on the sealing cover plate 2, an inflatable rubber cylinder 4 is sleeved on the mounting column 3, a pressure balance hole 5 is formed in the sealing cover plate 2, the mounting column 3 is arranged at the central position of the sealing cover plate 2, and a plurality of circles of pressure balance holes 5 are uniformly distributed on the periphery circumference of the mounting column 3; the inflatable rubber cylinder 4 is covered on the pressure balance hole 5 after being inflated to seal the pressure balance hole 5, and meanwhile, two sides of the inflatable rubber cylinder 4 are in pressure contact with the inner wall of the blanking plug body 1, so that the inflatable rubber cylinder 4, the mounting column 3 and the sealing cover plate 2 are fixed. The blanking plug body 1 is internally provided with a battery pack 6 and a driving assembly, and the battery pack 6 is used for providing electric energy for the electricity-using components of the underground oil pipe blanking plug.

The free end of the driving component is connected with the conical rod 9, the conical rod 9 is arranged opposite to the inflatable rubber cylinder 4, the lower end of the conical rod 9 is a pointed end, the driving component can drive the conical rod 9 to move downwards, the inflatable rubber cylinder 4 can be punctured after the conical rod 9 moves downwards, gas of the inflatable rubber cylinder 4 flows out, gaps are formed between the inflatable rubber cylinder 4 and the inner wall of the blanking plug body 1, underground fluid slowly flows upwards from the pressure balance holes 5, flows from the gaps to through holes of the blanking plug body 1 until most or all of the gas in the inflatable rubber cylinder 4 flows out, and at the moment, the paths of almost all the pressure balance holes 5 can be realized.

The blanking plug body 1 lower extreme is equipped with L template 10, rotates through pivot 12 on the L template 10 and is equipped with spacing bullet piece 13, still is equipped with the torsional spring on the pivot 12, and the both ends of torsional spring link to each other with L template 10 and spacing bullet piece 13 respectively, and the indent of L template 10 is equipped with mounting groove 11, and spacing bullet piece 13 is installed in mounting groove 11. As shown in fig. 2, the limiting elastic block 13 is limited by the mounting groove 11, so that the limiting elastic block 13 can only fall down clockwise to the right, but can not fall down anticlockwise to the left, after the limiting elastic block 13 is pressed to fall down to the right, after the pressure disappears, the limiting elastic block 13 can be reset under the action of the torsion spring.

As shown in fig. 1, when the driving assembly drives the taper rod 9 to continuously move downwards, the taper rod 9 also pushes the sealing cover plate 2 to rotate anticlockwise, the sealing cover plate 2 pushes the limiting elastic block 13 to rotate clockwise, and then the sealing cover plate 2 enters the sealing cover plate, the limiting elastic block rotates anticlockwise under the action of the torsion spring to reset, and the lower end of the sealing cover plate 2 is clamped.

The timer 14 is arranged in the blanking plug body 1, the timer 14 is electrically connected with the driving assembly, the timer 14 can set the starting countdown time in advance through the touch panel, for example, 10 hours can be set, and after 10 hours of the setting time, the timer 14 sends a started electric signal to the driving assembly, so that the effect of delayed starting is realized. The blanking plug body 1 is further provided with a signal receiver 15, the signal receiver 15 is electrically connected with the driving assembly, and the signal receiver 15 can receive wellhead signals so as to send started electric signals to the driving assembly. The timer 14 and the signal receiver 15 provide two different ways of starting the driving assembly, and the two ways can be used independently, or the signal receiver 15 can be used as a standby scheme when the timer 14 works abnormally.

The working principle and the working process of the underground oil pipe plug are as follows: install the blanking plug body in oil pipe bottom, aerify the packing element and be in complete state of aerifing, set up through the time-recorder later, the blanking plug body is gone into in the well along with oil pipe down, and the time of time-recorder reachs the back, and drive assembly promotes the awl pole, and awl pole pierces aerifing the packing element, and the well high-pressure fluid is through the pressure balance hole, upwards scurries to upper portion oil pipe, and after the upper and lower pressure is close equilibrium, the awl pole pushes away sealed apron to full open state, and sealed apron is locked to spacing bullet piece, accomplishes full latus rectum open well operation.

In this embodiment, the driving assembly is an electric cylinder, which is connected to the conical rod 9.

In another embodiment, the drive assembly comprises a hydraulic pump 7 and a piston 8 connected to the hydraulic pump 7, the piston 8 being connected to a conical rod 9.

The utility model is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present utility model, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present utility model, fall within the scope of protection of the present utility model.

Claims

1. An underground oil pipe blanking plug which is characterized in that: the sealing device comprises a blanking plug body (1), wherein a sealing cover plate (2) is rotatably arranged at the lower end of the blanking plug body (1), a mounting column (3) is convexly arranged on the sealing cover plate (2), an inflatable rubber cylinder (4) is sleeved on the mounting column (3), a pressure balance hole (5) is formed in the sealing cover plate (2), and the inflatable rubber cylinder (4) covers the pressure balance hole (5); a battery pack (6) and a driving assembly are arranged in the blanking plug body (1), the free end of the driving assembly is connected with a conical rod (9), and the conical rod (9) is arranged opposite to the inflatable rubber cylinder (4).

2. A downhole tubing plug according to claim 1, wherein: the blanking plug body (1) lower extreme is equipped with L template (10), rotates through pivot (12) and torsional spring on L template (10) and is equipped with spacing bullet piece (13).

3. A downhole tubing plug according to claim 2, wherein: the L-shaped plate (10) is concavely provided with a mounting groove (11), and the limiting elastic block (13) is mounted in the mounting groove (11).

4. A downhole tubing plug according to claim 1, wherein: a timer (14) is arranged in the blanking plug body (1), and the timer (14) is electrically connected with the driving component.

5. A downhole tubing plug according to claim 1, wherein: the blanking plug body (1) is provided with a signal receiver (15), and the signal receiver (15) is electrically connected with the driving assembly.

6. A downhole tubing plug according to claim 1, wherein: the mounting columns (3) are arranged at the center of the sealing cover plate (2), and the periphery of the mounting columns (3) is uniformly distributed on the circumference of the pressure balance holes (5).

7. A downhole tubing plug according to any of claims 1-6, wherein: the driving component is an electric cylinder, and the electric cylinder is connected with the taper rod (9).

8. A downhole tubing plug according to any of claims 1-6, wherein: the driving assembly comprises a hydraulic pump (7) and a piston (8) connected with the hydraulic pump (7), and the piston (8) is connected with a cone rod (9).