Spraying reducing device for oil well maintenance

Abstract

The utility model provides a blowout reducing device for oil well maintenance, which comprises a well pipe, a sealing pipe connected to the top of the well pipe, a ball valve arranged on the sealing pipe, a collecting hopper fixedly connected to the outer side of the sealing pipe, a cleaning mechanism fixedly connected to the inner wall of the collecting hopper, and a through hole formed in the outer side of the sealing pipe. The cleaning mechanism is used for cleaning the outer side of the sealing pipe and comprises a fixing rod fixed to the inner wall of the collecting hopper, a connecting rod is arranged in the fixing rod, a fixing ring is fixedly connected to one end of the connecting rod, a rubber layer is arranged on the inner wall of the fixing ring, and a positioning block is fixedly connected to the outer side of the connecting rod. The spray reducing device for oil well maintenance solves the problems that some existing spray reducing devices for oil well maintenance are inconvenient to clean the outer sides of oil pipes, so that after the oil pipes covered with oil are pulled out of the devices, clothes of operators are polluted, and meanwhile oil waste is caused.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil well overhauls technical field especially relates to oil well overhauls are with lowering and spraying device. BACKGROUND

[0002] Since oil well overhauls need to separate the oil pipe in the well from the oil well, the oil well needs to be quickly closed after the oil pipe is separated from the oil well, and the well blowout caused by the increase of oil and gas pressure in the well also needs to be prevented during the separation of the oil pipe, at this time, a lowering and spraying device for oil well overhauls is needed.

[0003] According to the utility model patent with the announcement of CN216277786U, a lowering and spraying device for oil well overhauls is disclosed, which belongs to the technical field of blowout preventers, and has the beneficial effects that: the inner side wall of the shell is welded with a spring, one end of the spring is welded with a connecting plate, the connecting plate and the first sliding block are hinged through a second connecting rod, which facilitates the stable connection of the connecting plate and the first sliding block during movement, the bottom end of the connecting block is hinged with a first connecting rod, the bottom end of the first connecting rod is welded with a sealing plug, a first sliding groove is formed on one side of the first connecting rod, and the first sliding groove is slidably connected with a first sliding block, after the oil pipe is pulled out, the spring will first push the connecting plate to move, drive the first connecting rod and the sealing plug to rotate around the bottom end of the connecting rod until the sealing pipe is blocked at one end, and the full sealing work is quickly completed.

[0004] However, when the well pipe needs to be overhauled, the oil pipe in the oil well is separated, and a blowout preventer is temporarily installed at the wellhead to prevent the well blowout caused by the increase of oil and gas pressure in the well, so when the blowout preventer is installed, the Christmas tree needs to be separated from the wellhead.

[0005] The above technology can quickly complete the sealing work, but lacks the function of cleaning the outside of the oil pipe, which causes the oil adhering to the outside of the oil pipe to contaminate the clothes of the operator after the oil pipe is pulled out of the device, and also causes the waste of oil, which has certain use defects.

[0006] Therefore, it is necessary to provide a new lowering and spraying device for oil well overhauls to solve the above technical problems. UTILITY MODEL CONTENTS

[0007] The utility model aims at providing a lowering and spraying device for oil well overhauls to solve the problems raised in the above background technology.

[0008] The lowering and spraying device for oil well overhauls provided by the utility model comprises a well pipe, a sealing pipe connected to the top of the well pipe, a ball valve installed on the sealing pipe, a collecting hopper fixedly connected to the outside of the sealing pipe, a cleaning mechanism fixedly connected to the inner wall of the collecting hopper, and a through hole formed on the outside of the sealing pipe, and the cleaning mechanism is used for cleaning the outside of the sealing pipe.

[0009] In order to achieve the effect of scraping the oil outside the oil pipe, as the utility model provides oil well maintenance is used to drop the spray device, preferably, the cleaning mechanism includes the fixed link that is fixed to the inner wall of the collecting hopper, the inside of the fixed link is provided with the connecting rod, one end of the connecting rod is fixedly connected with the fixed ring, the inner wall of the fixed ring is provided with the rubber layer, the outside of the connecting rod is fixedly connected with the positioning block, the inner wall of the fixed link is provided with the positioning groove, the positioning block and the positioning groove are slidably connected.

[0010] In order to achieve the effect of adjusting the distance of the fixed ring, as the utility model provides oil well maintenance is used to drop the spray device, preferably, the cleaning mechanism further includes that the inner wall of the connecting rod is slidably connected with the pressing block, the bottom of the pressing block is fixedly connected with the connecting plate, the bottom of the connecting plate is fixedly connected with the spring, the top of the connecting plate is fixedly connected with the limit pin, the outside of the fixed link is provided with the limit hole.

[0011] In order to achieve the effect of discharging the residual oil in the collecting hopper, as the utility model provides oil well maintenance is used to drop the spray device, preferably, one side of the collecting hopper is communicated with the oil discharge pipe, the outside of the oil discharge pipe is provided with the discharge valve.

[0012] In order to achieve the effect of avoiding dust falling into the collecting hopper, as the utility model provides oil well maintenance is used to drop the spray device, preferably, one side of the top of the collecting hopper is rotatably connected with the dust cover through the hinge, the other side of the top of the collecting hopper is provided with the insertion hole, the bottom of the dust cover is fixedly connected with the insertion rod.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The oil well maintenance is used to drop the spray device, when the oil pipe is taken out upward, through the cleaning mechanism, the oil adhered to the outside of the oil pipe is scraped into the collecting hopper, the clothes of the operator are prevented from being polluted by the oil pipe full of oil, and the waste of oil is prevented. ACCURACY OF DRAWINGS

[0015] Figure 1 The preferred embodiment structure diagram of the oil well maintenance is used to drop the spray device provided by the utility model is shown in the figure;

[0016] Figure 2 The structure diagram of the collecting hopper and the dust cover in the utility model is shown in the figure;

[0017] Figure 3 The structure diagram of the sealing pipe and the through hole in the utility model is shown in the figure;

[0018] Figure 4 The structure diagram of the cleaning mechanism in the utility model is shown in the figure.

[0019] Figure 5This is a schematic diagram of the connecting plate and spring in this utility model.

[0020] Labels in the diagram: 1. Well casing; 2. Sealing pipe; 3. Ball valve; 4. Collection hopper; 5. Cleaning mechanism; 51. Fixing rod; 52. Connecting rod; 521. Positioning block; 53. Fixing ring; 54. Rubber layer; 55. Pressing block; 56. Connecting plate; 57. Spring; 58. Limiting pin; 59. Limiting hole; 6. Through hole; 7. Oil drain pipe; 8. Drain valve; 9. Dust cover; 10. Insertion hole; 11. Insertion rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. It is understood that the accompanying drawings are provided for reference and illustration only and are not intended to limit the present utility model. The connection relationships shown in the drawings are only for clear description and do not limit the connection method.

[0022] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic diagram of a preferred embodiment of the blowout reduction device for oil well maintenance provided by this utility model; Figure 2 This is a schematic diagram of the structure of the collection hopper and dust cover in this utility model; Figure 3 This is a schematic diagram of the sealing tube and through hole in this utility model;

[0023] Figure 4 This is a schematic diagram of the cleaning mechanism in this utility model. Figure 5 This is a schematic diagram of the connecting plate and spring in this utility model. The wellhead maintenance blowout reduction device includes a well pipe 1, a sealing pipe 2 connected to the top flange of the well pipe 1, and a ball valve 3 connected to the flange on the sealing pipe 2. The size of the ball valve 3 satisfies the following condition: the difference between the inner diameter of its ball orifice and the outer diameter of the oil pipe is 0.3 mm. A collection hopper 4 is seamlessly welded to the outside of the sealing pipe 2, and a cleaning mechanism 5 is fixedly connected to the inner wall of the collection hopper 4. Through holes 6 are evenly distributed circumferentially on the upper outer side of the sealing pipe 2. The cleaning mechanism 5 is used to clean the outer side of the sealing pipe 2.

[0024] The collecting hopper 4 is arranged for collecting the oil flowing down from the upper port of the sealing pipe 2 and the oil discharged through the through holes 6. The through holes 6 are arranged in a ring shape and uniformly distributed in the ring shape. The oil sprayed laterally by the through holes 6 arranged in the ring shape and uniformly distributed in the ring shape is collected by the collecting hopper 4. In particular, when the oil pipe is pulled out of the ball hole of the ball valve 3, the oil upwardly flowing can be collected by the collecting hopper 4, effectively reducing the amount of oil sprayed in the area.

[0025] It should be noted that when the oil pipe is pulled out of the sealing pipe 2, the cleaning mechanism 5 is adjusted to be attached to the outer side of the sealing pipe 2. When the sealing pipe 2 rises, the oil adhered to the outer side of the sealing pipe 2 can be cleaned by the cleaning mechanism 5 and falls into the collecting hopper 4. The oil collected in the collecting hopper 4 flows back into the sealing pipe 2 through the through holes 6. Finally, the ball valve 3 is closed.

[0026] In the specific implementation process, as shown in Figure 2 , Figure 4 and Figure 5 , the cleaning mechanism 5 includes a fixed rod 51 fixed to the inner wall of the collecting hopper 4. The inner wall of the fixed rod 51 is provided with a connecting rod 52. One end of the connecting rod 52 is fixedly connected with a fixed ring 53. The inner wall of the fixed ring 53 is provided with a rubber layer 54. The outer side of the connecting rod 52 is fixedly connected with a positioning block 521. The inner wall of the fixed rod 51 is provided with a positioning groove. The positioning block 521 is slidably connected with the positioning groove.

[0027] The cleaning mechanism 5 further includes a pressing block 55 slidably connected with the inner wall of the connecting rod 52. The bottom of the pressing block 55 is fixedly connected with a connecting plate 56. The bottom of the connecting plate 56 is fixedly connected with a spring 57. The top of the connecting plate 56 is fixedly connected with a limiting pin 58. The outer side of the fixed rod 51 is provided with a limiting hole 59.

[0028] It should be noted that pressing the pressing block 55 moves the connecting plate 56 to drive the limiting pin 58 to retract from the limiting hole 59 into the connecting rod 52. At this time, the spring 57 is in a compressed state. Then, moving the connecting rod 52 drives the fixed ring 53 to move, so that the rubber layer 54 contacts the outer side of the oil pipe. Then, the pressing block 55 is released. The elastic force of the spring 57 can reset the connecting plate 56 to drive the limiting pin 58 to reset, so that the limiting pin 58 is ejected from the limiting hole 59 on the outer side of the fixed rod 51 to fix the fixed ring 53. When the oil pipe is pulled out, the oil adhered to the surface of the oil pipe can be scraped into the collecting hopper 4 under the action of the two fixed rings 53, avoiding the oil pipe from being full of oil after being pulled out, which not only causes waste of resources, but also pollutes the clothes of the operator.

[0029] As shown in Figure 1 and Figure 2 , one side of the collecting hopper 4 is communicated with a discharge pipe 7. The outer side of the discharge pipe 7 is provided with a discharge valve 8.

[0030] It should be noted that when the oil collected in the collecting bucket 4 is returned to the sealing pipe 2 through the through hole 6 and the ball valve 3 is closed, the oil below the horizontal line of the through hole 6 is stored in the collecting bucket 4, and the operator places the container below one end of the oil discharge pipe 7, and then opens the discharge valve 8 to discharge the remaining oil.

[0031] Reference Figure 1 And Figure 2 As shown in the drawings, one side of the top of the collecting bucket 4 is rotatably connected with a dust cover 9 through a hinge, and the other side of the top of the collecting bucket 4 is provided with a jack 10, and the bottom of the dust cover 9 is fixedly connected with a plug rod 11.

[0032] It should be noted that when the oil pipe is pulled out of the sealing pipe 2, the plug rod 11 is inserted into the jack 10 by rotating the dust cover 9, so that the dust cover 9 is clamped on the top of the collecting bucket 4 to prevent dust from falling into the collecting bucket 4.

[0033] The working principle of the oil well maintenance spray reducing device is as follows:

[0034] In use, the dust cover 9 is opened, then the ball valve 3 is opened, the oil pipe for guiding the spray is inserted into the upper port of the sealing pipe 2 and penetrates the ball hole of the ball valve 3, and after the well pipe 1 wellhead oil tree is disassembled, the sealing pipe 2 is installed on the well pipe 1 port, in this process, the oil liquid laterally sprayed by the circumferentially uniformly arranged through hole 6 will enter the collecting bucket 4 and be collected, especially when the oil pipe is pulled out of the ball hole of the ball valve 3, if the oil liquid is upwelling, it can be collected by the collecting bucket 4, effectively reducing the amount of oil liquid sprayed in this area, and achieving the effect of preventing spray;

[0035] Until the sealing pipe 2 is effectively installed on the upper port of the well pipe 1, adjust the cleaning mechanism 5 to make it fit the outside of the oil pipe, when the oil pipe is moved upward, the oil adhered to the outside of the oil pipe is scraped off by the cleaning mechanism 5, avoiding the oil pipe contaminated with oil from polluting the clothes of the personnel, and saving oil resources.

[0036] When the oil pipe is pulled out of the ball hole of the ball valve 3, the ball valve 3 can be closed to avoid the underground oil liquid from being sprayed upward.

[0037] In the above detailed description, reference is made to the drawings, which form a part hereof. In the drawings, similar symbols typically identify similar components, unless context dictates otherwise. The illustrative embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments can be used, and other changes can be made, without departing from the spirit or scope of the subject matter presented herein.

[0038] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A blowout preventer for use in servicing an oil well, characterized in that, The application relates to a well pipe (1), the top of the well pipe (1) is connected with a sealing pipe (2), a ball valve (3) is arranged on the sealing pipe (2), the outer side of the sealing pipe (2) is fixedly connected with a collecting hopper (4), the inner wall of the collecting hopper (4) is fixedly connected with a cleaning mechanism (5), a through hole (6) is formed in the outer side of the sealing pipe (2), and the cleaning mechanism (5) is used for cleaning the outer side of the sealing pipe (2).

2. The blowout preventer according to claim 1, wherein The cleaning mechanism (5) comprises a fixing rod (51) fixed to the inner wall of the collecting hopper (4), a connecting rod (52) arranged in the fixing rod (51), a fixing ring (53) fixedly connected to one end of the connecting rod (52), a rubber layer (54) arranged on the inner wall of the fixing ring (53), a positioning block (521) fixedly connected to the outer side of the connecting rod (52), a positioning groove formed in the inner wall of the fixing rod (51), and the positioning block (521) is in sliding connection with the positioning groove.

3. The blowout preventer as defined in claim 2, wherein The cleaning mechanism (5) further comprises a pressing block (55) in sliding connection with the inner wall of the connecting rod (52), a connecting plate (56) fixedly connected to the bottom of the pressing block (55), a spring (57) fixedly connected to the bottom of the connecting plate (56), a limiting pin (58) fixedly connected to the top of the connecting plate (56), and a limiting hole (59) formed in the outer side of the fixing rod (51).

4. The blowout preventer of claim 1, wherein One side of the collecting hopper (4) is communicated with an oil discharge pipe (7), and the outer side of the oil discharge pipe (7) is provided with a discharge valve (8).

5. The blowout preventer of claim 4, wherein The top of the collecting hopper (4) is rotatably connected with a dustproof cover (9) through a hinge on one side, the top of the collecting hopper (4) is provided with a jack (10) on the other side, and the bottom of the dustproof cover (9) is fixedly connected with a plug rod (11).

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