Detachable and replaceable wellhead filtering device for petroleum water injection

Abstract

The utility model discloses a detachable and replaceable wellhead filtering device for petroleum water injection, which comprises a concrete wellhead, a cover plate arranged on the upper side of the concrete wellhead and a handle arranged on the upper side of the cover plate, a connecting block arranged on the lower side of the cover plate, and a connecting assembly comprising a first joining block arranged on the outer side of the connecting block; a protective cover is arranged on the inner side of the first connecting block, and a reinforcing plate is arranged on the lower side of the supporting plate. According to the detachable and replaceable wellhead filtering device for petroleum water injection, a connecting assembly and a connecting block are additionally arranged, a connecting rod penetrates through the interior of a first connecting block, so that the connecting rod penetrates through the connecting block and an internal hole of a protective cover, and fastening blocks are screwed on the upper side and the lower side of the connecting rod; the protective structure of the wellhead filtering device for petroleum water injection is convenient to quickly assemble, and meanwhile, the supporting plate and the filtering chamber are additionally arranged, so that the detachable function of the wellhead filtering device for petroleum water injection is convenient to realize.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum water injection, in particular to a detachable wellhead filtering device for petroleum water injection. Background Art

[0002] Oil injection wells refer to wells used to inject water into oil layers during oil field development. Water injection can increase the extraction rate and recovery rate of oil reservoirs. In the process of water injection, a filter device is needed to filter the injected water to prevent impurities in the water from being injected into the oil well and causing oil pollution. However, the commonly used oil injection well filter devices are inconvenient to install and operate the filter screen during actual use. The filter screen is prone to clogging and damage after long-term use, affecting the filtering effect. It is inconvenient to regularly disassemble, clean and replace the filter screen. Therefore, it is very important to design a removable wellhead filter device for oil injection, such as:

[0003] Chinese patent publication number CN216223271U discloses a wellhead filtration device for water injection in petroleum engineering projects, comprising a filter box, an injection pipe connected to one side of the filter box, a filter screen disposed within the filter box, a sewage pipe disposed at one side of the bottom end of the filter box, a mounting bracket disposed at the bottom end of the injection pipe, a sewage pump disposed on the mounting bracket, the sewage pump's water inlet connected to the sewage pipe via a flange, a collection box disposed on the lower end face of the mounting bracket, the sewage pump's water outlet connected to the collection box via a pipe, a sealing seat threadedly connected to the bottom end of the collection box, and an equipment box disposed on one side of the outer wall of the collection box. When water from the injection pipe flows into the filter box, the filter screen filters impurities in the water, and the filtered water flows into the connecting pipe. The water flow pushes the blowout preventer to flip rightward and open, driving the rotating shaft to rotate in the rotating groove. Simultaneously, the connecting block flips in the rotating groove, allowing water to be injected into the oil well through the connecting pipe to complete the water injection operation.

[0004] However, the above-mentioned prior art solutions have the following defects: it is not convenient to quickly assemble the protective structure of the wellhead filter device for oil water injection, and it is not convenient to realize the detachable function of the wellhead filter device for oil water injection. It is difficult to process the filter mechanism that has completed the filtering work in a short time, which affects the continuation of subsequent work. Therefore, the utility model provides a detachable wellhead filter device for oil water injection to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a detachable wellhead filter device for oil water injection, so as to solve the problem raised in the above background technology that it is not convenient to quickly assemble the protective structure of the wellhead filter device for oil water injection, and at the same time, it is not convenient to realize the detachable function of the wellhead filter device for oil water injection.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a removable wellhead filter device for oil water injection, comprising a concrete wellhead, a cover plate disposed on the upper side of the concrete wellhead, a filter screen disposed on the inner side of the cover plate, a handle disposed on the upper side of the cover plate, a connecting block disposed on the lower side of the cover plate, and a connecting assembly disposed on the outer side of the connecting block, the connecting assembly comprising a first connecting block disposed on the outer side of the connecting block, and a second connecting block disposed on the front side of the first connecting block;

[0007] A connecting rod is arranged inside the first connecting block, and a fastening block is arranged on the outside of the connecting rod, a protective cover is arranged on the inside of the first connecting block, and a support plate is arranged on the inside of the protective cover, a reinforcement plate is arranged on the lower side of the support plate, and a filter chamber is installed on the inner side of the support plate, and a positioning plate is arranged on the upper side of the filter chamber.

[0008] Preferably, the concrete wellhead and the filter screen are connected by welding, and the handles are arranged bilaterally symmetrically with respect to the center line of the concrete wellhead.

[0009] Preferably, the longitudinal section of the connecting block is in the shape of an I, and the connecting block is connected to the concrete wellhead by welding.

[0010] Preferably, the first connecting block is relatively engaged with the connecting block and the protective cover, and the first connecting block and the second connecting block are both in a "C" shape.

[0011] Preferably, the connecting rod passes through the interior of the first connecting block, and the connecting rod is arranged in a bilaterally symmetrical manner with respect to the center line of the first connecting block.

[0012] Preferably, the fastening blocks are symmetrically arranged with respect to the center line of the connecting rod, and the fastening blocks are threadedly connected to the connecting rod.

[0013] Preferably, the support plate is relatively engaged with the filter chamber, and the filter chamber is a hollow barrel-shaped structure.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the detachable wellhead filter device for oil water injection is convenient for quickly assembling the protective structure of the wellhead filter device for oil water injection by adding a connecting assembly and a connecting block, inserting a connecting rod into the interior of the first connecting block, allowing the connecting rod to pass through the internal holes of the connecting block and the protective cover, and screwing fastening blocks on the upper and lower sides of the connecting rod. At the same time, the supporting plate and the filter chamber are added to facilitate the detachable function of the wellhead filter device for oil water injection. The specific operation is as follows;

[0015] 1. A filter screen and a cover plate are provided. By placing the cover plate on the concrete wellhead, the cover plate is engaged in the groove corresponding to the concrete wellhead, so that the water entering the connecting block through the filter screen can retain impurities on the upper side of the filter screen, which is convenient for filtering impurities in the water by the wellhead filter device for oil injection;

[0016] 2. A connecting block and a connecting assembly are provided. By placing a protective cover on the lower side of the connecting block, the second connecting block and the first connecting block are respectively engaged with the front and rear sides of the connection between the connecting block and the protective cover. The connecting rod is inserted into the interior of the first connecting block, so that the connecting rod passes through the internal holes of the connecting block and the protective cover, and fastening blocks are screwed on the upper and lower sides of the connecting rod, thereby facilitating the rapid assembly of the protective structure of the wellhead filter device for oil water injection;

[0017] 3. A support plate and a positioning plate are provided. After the wellhead filter device for oil water injection completes filtering, the filter mechanism can be disassembled and replaced by removing the filter chamber from the support plate, thereby facilitating the detachable function of the wellhead filter device for oil water injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the connection between the first connecting block and the second connecting block of the utility model;

[0020] Figure 3 This is a schematic diagram of the overall explosion structure of the connection block and the concrete wellhead of the utility model;

[0021] Figure 4 This is a schematic diagram of the overall explosion structure of the support plate and the positioning plate connected in the utility model;

[0022] Figure 5 For this utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0023] In the figure: 1. Concrete wellhead; 2. Cover plate; 3. Filter screen; 4. Handle; 5. Connecting block; 6. Connecting assembly; 601. First connecting block; 602. Connecting rod; 603. Fastening block; 7. Second connecting block; 8. Protective cover; 9. Support plate; 10. Reinforcement plate; 11. Filter chamber; 12. Positioning plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-5 The utility model provides a technical solution: a detachable wellhead filter device for oil water injection, comprising a concrete wellhead 1, a cover plate 2 provided on the upper side of the concrete wellhead 1, a filter screen 3 provided on the inner side of the cover plate 2, a handle 4 provided on the upper side of the cover plate 2, a connecting block 5 provided on the lower side of the cover plate 2, and a connecting assembly 6 provided on the outer side of the connecting block 5, the connecting assembly 6 including a first connecting block 601 provided on the outer side of the connecting block 5, and a second connecting block 7 provided on the front side of the first connecting block 601;

[0026] A connecting rod 602 is arranged inside the first connecting block 601, and a fastening block 603 is provided on the outside of the connecting rod 602, a protective cover 8 is provided on the inside of the first connecting block 601, and a support plate 9 is provided on the inside of the protective cover 8, a reinforcing plate 10 is provided on the lower side of the support plate 9, and a filter chamber 11 is installed on the inner side of the support plate 9, and a positioning plate 12 is provided on the upper side of the filter chamber 11, which together constitute a detachable wellhead filter device for oil water injection.

[0027] like Figure 1 and Figure 3 As shown, the concrete wellhead 1 and the filter screen 3 are connected by welding, and the handle 4 is arranged symmetrically about the center line of the concrete wellhead 1. The longitudinal section of the connecting block 5 is in the shape of an "I", and the connecting block 5 and the concrete wellhead 1 are connected by welding. The filter screen 3 with a hollow structure is welded inside the concrete wellhead 1. The handle 4 is held by hand and the cover plate 2 is placed on the concrete wellhead 1 so that the cover plate 2 is engaged in the groove corresponding to the concrete wellhead 1, so that the water entering the connecting block 5 through the filter screen 3 can retain impurities on the upper side of the filter screen 3, which is convenient for filtering impurities in water by the wellhead filter device for oil water injection.

[0028] like Figure 1 、 Figure 2 and Figure 5As shown, the first connecting block 601 is relatively engaged with the connecting block 5 and the protective cover 8, and the first connecting block 601 and the second connecting block 7 are both "C"-shaped, the connecting rod 602 runs through the interior of the first connecting block 601, and the connecting rod 602 is symmetrically arranged with respect to the center line of the first connecting block 601, the fastening block 603 is symmetrically arranged with respect to the center line of the connecting rod 602, and the fastening block 603 is relatively threadedly connected to the connecting rod 602, and the protective cover 8 is placed on the lower side of the connecting block 5, so that the second connecting block 7 and the first connecting block 601 are respectively engaged with the front and rear sides of the connection between the connecting block 5 and the protective cover 8, the connecting rod 602 is passed through the interior of the first connecting block 601, so that the connecting rod 602 passes through the internal holes of the connecting block 5 and the protective cover 8, and the fastening blocks 603 are screwed on the upper and lower sides of the connecting rod 602, so as to facilitate the rapid assembly of the protective structure of the wellhead filtering device for oil water injection.

[0029] like Figure 1 and Figure 4 As shown, the support plate 9 is relatively engaged with the filter chamber 11, and the filter chamber 11 is a hollow barrel structure. Before the protective cover 8 contacts the connecting block 5, the filter chamber 11 is engaged with the inner side of the support plate 9, so that the lower side of the positioning plate 12 contacts the upper side of the support plate 9. When the wellhead filter device for oil water injection completes the filtration, the filter mechanism can be disassembled and replaced by removing the filter chamber 11 from the support plate 9, which facilitates the realization of the detachable function of the wellhead filter device for oil water injection. This is the method of using the detachable wellhead filter device for oil water injection.

[0030] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A detachable wellhead filter device for oil water injection, comprising a concrete wellhead (1), a cover plate (2) provided on the upper side of the concrete wellhead (1), and a filter screen (3) provided on the inner side of the cover plate (2), characterized in that: It also includes a handle (4) arranged on the upper side of the cover plate (2), a connecting block (5) is arranged on the lower side of the cover plate (2), and a connecting assembly (6) is arranged on the outer side of the connecting block (5), the connecting assembly (6) includes a first connecting block (601) arranged on the outer side of the connecting block (5), and a second connecting block (7) is arranged on the front side of the first connecting block (601); A connecting rod (602) is arranged inside the first connecting block (601), and a fastening block (603) is arranged on the outside of the connecting rod (602), a protective cover (8) is arranged on the inside of the first connecting block (601), and a support plate (9) is arranged on the inside of the protective cover (8), a reinforcing plate (10) is arranged on the lower side of the support plate (9), and a filter chamber (11) is installed on the inner side of the support plate (9), and a positioning plate (12) is arranged on the upper side of the filter chamber (11).

2. A detachable wellhead filter device for oil water injection according to claim 1, characterized in that: The concrete wellhead (1) and the filter screen (3) are connected by welding, and the handle (4) is arranged in a left-right symmetrical manner with respect to the center line of the concrete wellhead (1).

3. The detachable wellhead filter device for oil water injection according to claim 1, characterized in that: The longitudinal section of the connecting block (5) is in the shape of an "I" character, and the connecting block (5) is connected to the concrete wellhead (1) by welding.

4. The detachable wellhead filter device for oil water injection according to claim 1, characterized in that: The first connecting block (601) is relatively engaged with the connecting block (5) and the protective cover (8), and the first connecting block (601) and the second connecting block (7) are both in a "C" shape.

5. A detachable wellhead filter device for oil water injection according to claim 4, characterized in that: The connecting rod (602) passes through the interior of the first connecting block (601), and the connecting rod (602) is arranged in a left-right symmetrical manner with respect to the center line of the first connecting block (601).

6. A detachable wellhead filter device for oil water injection according to claim 5, characterized in that: The fastening blocks (603) are arranged symmetrically with respect to the center line of the connecting rod (602), and the fastening blocks (603) and the connecting rod (602) are threadedly connected relative to each other.

7. The detachable wellhead filter device for oil water injection according to claim 1, characterized in that: The support plate (9) is relatively engaged and connected with the filter chamber (11), and the filter chamber (11) is a hollow barrel-shaped structure.

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