An easy-to-flushing oilfield water shut-off and profile control agent injection device

Abstract

This utility model discloses an easy-to-wash oilfield water shut-off and profile control agent injection device, including a fixed box, a support frame, a stirring rod, a valve, and a connecting pipe. A cover plate is fitted onto the upper end of the fixed box, and a ring-shaped flushing pipe is fixedly installed at the lower end of the cover plate. A scraper is fixedly connected to the side of the stirring rod away from the vertical central axis of the fixed box. The fixing mechanism includes a connecting plate, a connecting block, a vertical plate, a connecting rod, and a connecting cap. This easy-to-wash oilfield water shut-off and profile control agent injection device can fully mix the materials in the fixed box, preventing accumulation, and can also scrape off materials adhering to the inner wall of the fixed box. The flushing pipe and nozzle allow for rinsing of the inner wall of the fixed box after use. The fixing mechanism, combined with the cover plate's disassembly structure with the fixed box, facilitates thorough cleaning of the device and prevents residue buildup.

Description

Technical Field

[0001] This utility model relates to the technical field of oilfield water shut-off and profile control agent injection, specifically to an oilfield water shut-off and profile control agent injection device that facilitates flushing. Background Technology

[0002] During oilfield development, in order to prevent the water level from rising due to increased water injection, which could lead to the breakthrough of high-permeability channels and the gradual flooding of oil and gas wells, it is necessary to inject oilfield water shut-off and profile control agents to seal high-permeability layers and adjust the water absorption profile of the injection layer, thereby reducing water production in oil wells and improving crude oil recovery.

[0003] As disclosed in announcement number CN221933807U, an oilfield water shut-off and profile control agent injection device is used in the field of oilfield development. It includes a mixing tank and a feed pipe and a delivery pipe located at the top and bottom of the mixing tank. A mixing and cleaning component is fixedly installed on the top of the mixing tank. A dispersion disc located inside the mixing tank and below the feed pipe is fixedly installed on the outside of the mixing and cleaning component. The mixing and cleaning component includes a mounting frame, which is fixedly installed on the top of the mixing tank. When the rotating rod of this invention rotates, the threaded groove drives the lead screw slider to slide up and down along the inner side of the mounting frame. The lead screw slider drives the connecting rod, which in turn drives the support pipe to rise and fall. The support pipe drives the cleaning ring to rise and fall on the inner wall of the mixing tank, scraping off the material adhering to the inner wall. Water is supplied through a water pump and water pipe and rinsed through a spray nozzle, thus facilitating the cleaning of the inside of the mixing tank and improving cleaning efficiency.

[0004] However, existing technologies suffer from insufficient mixing, and the spray nozzles located at the bottom of the tank are prone to clogging, affecting the actual rinsing effect. Furthermore, it is inconvenient to disassemble and thoroughly clean the inside of the tank after use, leaving residues. For example, the comparative patents listed above have this problem.

[0005] To address this issue, we propose an oilfield water shut-off and profile control agent injection device that facilitates flushing. Utility Model Content

[0006] The purpose of this invention is to provide an oilfield water shut-off and profile control agent injection device that is easy to flush, in order to solve the problems mentioned in the background art, such as insufficient mixing effect, easy clogging of the water nozzle located at the bottom of the tank, which affects the actual flushing effect, and inconvenience to disassemble and clean the inside of the tank after use, resulting in residue.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an oilfield water shut-off and profile control agent injection device that is easy to flush, comprising a fixed box, a support frame, a stirring rod, a valve, and a connecting pipe;

[0008] Also includes:

[0009] A cover plate is fitted to the upper end of the fixed box, and a ring-shaped flushing pipe is fixedly installed at the lower end of the cover plate. Multiple nozzles are installed at equal angles at the lower end of the flushing pipe.

[0010] The nozzle is inclined outward toward the inner wall of the fixed box at the lower end of the water pipe.

[0011] Multiple sets of scrapers are fixedly connected to the side of the stirring rod away from the vertical central axis of the fixed box, and the scrapers are fitted against the inner wall of the fixed box.

[0012] The fixing mechanism includes a connecting plate, a connecting block, a vertical plate, a connecting rod, and a connecting cap. The fixing mechanism is symmetrically arranged on the left and right sides of the cover plate, and the fixing mechanism drives the cover plate to form a disassembly structure at the upper end of the fixing box.

[0013] Preferably, the fixing box is fixedly connected to the upper end of the support frame, and a valve is fixedly installed at the lower end of the fixing box, and the valve is connected to the connecting pipe.

[0014] The upper end of the cover plate is provided with a feed pipe, and the front side of the upper end of the cover plate is provided with a water inlet pipe. The lower end of the water inlet pipe is connected to a flushing pipe, and the water inlet pipe is connected to an external water pump.

[0015] A motor for driving is fixedly installed in the middle of the upper part of the cover plate, and a stirring rod is fixedly connected to the output end of the motor. Fixing plates are fixedly connected to both the left and right ends of the cover plate, and positioning protrusions are fixedly connected to the outer side of the fixing plates.

[0016] The motor drives the stirring rod and scraper to rotate in the fixed box.

[0017] The upper left and right sides of the fixed box are fixedly connected with vertical fixing pins, and the fixing pins are inserted into the fixing plate. The lower front and rear sides of the fixing pins are fixedly connected with connecting blocks.

[0018] The lower end of the fixing pin is fitted with a connecting plate, and the connecting plate and the connecting block form a left-right sliding structure. The upper end of the outer side of the connecting plate is fixedly connected with a vertical plate, and the upper end of the vertical plate is engaged with a protrusion.

[0019] A connecting rod is inserted into the outer side of the connecting plate, and the connecting rod is fixedly connected to the outer side of the lower end of the fixing pin.

[0020] The outer surface of the connecting rod is threaded with a connecting cap for locking, and the connecting cap is fitted to the connecting plate.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows: This easy-to-wash oilfield water shut-off and profile control agent injection device uses a motor to drive the stirring rod and scraper to rotate in a fixed box. The scraper is set against the inner wall of the fixed box, which can fully stir and mix the material in various positions inside the fixed box to prevent accumulation. It can also scrape off the material adhering to the inner wall of the fixed box. With the setting of the flushing pipe and nozzle, the inner wall of the fixed box can be flushed after use. Combined with the fixed mechanism, the cover plate and the fixed box form a disassembly structure, which facilitates the thorough cleaning of the device and prevents residue.

[0022] 1. Equipped with a stirring rod and a scraper, the stirring rod and scraper rotate in the fixed box, and the scraper is attached to the inner wall of the fixed box, so as to fully mix and stir the materials in the fixed box, prevent accumulation, and prevent the materials from sticking to the inner wall of the fixed box;

[0023] 2. It is equipped with a flushing pipe and a nozzle. The nozzle is set at the lower end of the flushing pipe at an equal angle, and the nozzle is tilted outward toward the inner wall of the fixed box, so that the inner wall of the fixed box can be rinsed after use to prevent residue.

[0024] 3. A fixing mechanism is provided, which includes a connecting plate, a connecting block, a vertical plate, a connecting rod, and a connecting cap. The fixing mechanism facilitates the disassembly of the cover plate from the fixed box, thereby allowing for thorough cleaning of the interior of the fixed box, as well as the stirring rod and scraper. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a frontal sectional view of the present invention.

[0027] Figure 3 This is an exploded structural diagram of the fixed box, stirring rod, and scraper of this utility model;

[0028] Figure 4 This is a schematic diagram of the disassembled structure of the cover plate, stirring rod, scraper, and fixing box of this utility model;

[0029] Figure 5 This is a bottom view schematic diagram of the flushing pipe and nozzle of this utility model;

[0030] Figure 6 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0031] Figure 7 This is an exploded structural diagram of the protrusion and fixing mechanism of this utility model.

[0032] In the diagram: 1. Fixed box; 2. Support frame; 3. Cover plate; 4. Motor; 5. Stirring rod; 6. Scraper; 7. Valve; 8. Connecting pipe; 9. Flushing pipe; 10. Nozzle; 11. Fixing pin; 12. Fixing plate; 13. Protrusion; 14. Fixing mechanism; 15. Connecting plate; 16. Connecting block; 17. Vertical plate; 18. Connecting rod; 19. Connecting cap. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see Figures 1-7 The present invention provides the following technical solution.

[0035] Example 1: To address the problem of insufficient mixing in existing technologies, this example provides an oilfield water shut-off and profile control agent injection device that facilitates flushing. The device comprises a fixed box 1, a support frame 2, a cover plate 3, a motor 4, a stirring rod 5, a scraper 6, a valve 7, and a connecting pipe 8. The fixed box 1 is fixedly connected to the upper end of the support frame 2. The cover plate 3 is fitted against the upper end of the fixed box 1. The scraper 6 is fixedly connected to the side of the stirring rod 5 away from the vertical central axis of the fixed box 1 and is fitted against the inner wall of the fixed box 1. A motor 4 for driving is fixedly installed in the middle of the upper end of the cover plate 3, and the output end of the motor 4 is fixedly connected to the stirring rod 5. The motor 4 drives the stirring rod 5 and the scraper 6 to rotate within the fixed box 1. A valve 7 is fixedly installed at the lower end of the fixed box 1 and is connected to the connecting pipe 8. Figure 1 , Figure 2 and Figure 3 As shown, firstly, the plugging agent and water are added to the fixed box 1 in appropriate amounts through the feed pipe. Then, the motor 4 is started, and the motor 4 drives the stirring rod 5 and the scraper 6 to rotate in the fixed box 1, so as to uniformly mix the materials in the fixed box 1 and prevent accumulation in the fixed box 1. The scraper 6 can scrape off the materials adhering to the inner wall of the fixed box 1, and the stirring rod 5 can fully mix the materials in various positions inside the fixed box 1. After the mixing is completed, the valve 7 is opened, and the materials are discharged and transported to the oil and gas well for injection through the connecting pipe 8.

[0036] Example 2: To address the problem in existing technologies where the spray nozzles located at the bottom of the tank are prone to clogging, affecting the actual flushing effect, this example provides the following technical solution: an oilfield water shut-off and profile control agent injection device for easy flushing, equipped with a flushing pipe 9 and nozzles 10. A ring-shaped flushing pipe 9 is fixedly installed at the lower end of the cover plate 3, and multiple nozzles 10 are installed at equal angles at the lower end of the flushing pipe 9. An inlet pipe is provided at the upper end of the cover plate 3, and a water inlet pipe is provided on the front side of the upper end of the cover plate 3. The lower end of the water inlet pipe is connected to the flushing pipe 9 and connected to an external water pump. Figure 2 and Figure 5 As shown, after the water is drained, clean water is pumped into the flushing pipe 9 by an external water pump and sprayed outward from the nozzle 10. At this time, the nozzle 10 sprays directly onto the inner wall of the fixed box 1, and the scraper 6 scrapes the inner wall of the fixed box 1, thereby achieving a very good rinsing effect.

[0037] Example 3: To address the issue of inconvenience in fully disassembling and cleaning the interior of the casing after use, resulting in residues, this example provides an easy-to-wash oilfield water shut-off and profile control agent injection device. This device includes a fixing pin 11, a fixing plate 12, a protrusion 13, and a fixing mechanism 14. The left and right ends of the cover plate 3 are fixedly connected to the fixing plate 12, and the outer surface of the fixing plate 12 is fixedly connected to the protrusion 13 for positioning. Vertical fixing pins 11 are fixedly connected to the left and right sides of the upper end of the casing 1, and the fixing pins 11 are inserted into the fixing plate 12. The fixing mechanism 14 includes a connecting plate 15, a connecting block 16, a vertical plate 17, a connecting rod 18, and a connecting cap 19. The fixing mechanism 14 is symmetrically arranged on the left and right sides of the cover plate 3, and the fixing mechanism 14 drives the cover plate 3 to form a disassembly structure at the upper end of the fixing box 1. The front and rear sides of the lower end of the fixing pin 11 are fixedly connected to the connecting block 16. The lower end of the fixing pin 11 is fitted with a connecting plate 15, and the connecting plate 15 and the connecting block 16 form a left and right sliding structure. The upper outer side of the connecting plate 15 is fixedly connected to the vertical plate 17, and the upper end of the vertical plate 17 is engaged with the protrusion 13. The outer side of the connecting plate 15 is inserted with the connecting rod 18, and the connecting rod 18 is fixedly connected to the outer side of the lower end of the fixing pin 11. The outer surface of the connecting rod 18 is threaded with a connecting cap 19 for locking, and the connecting cap 19 and the connecting plate 15 are fitted together. Figure 1 , Figure 4 , Figure 6 and Figure 7As shown, after use, turn off the power. You can also rotate the connecting cap 19, which is threaded onto the outer surface of the connecting rod 18, to disengage the connecting cap 19 from the connecting rod 18, thus loosening the limit between the vertical plate 17 and the connecting rod 18. Then, pull the connecting plate 15 outward, and the connecting plate 15 slides between the connecting block 16 and the connecting rod 18. At this time, the connecting plate 15 drives the vertical plate 17 to disengage from the protrusion 13, thereby loosening the limit between the fixing plate 12 and the fixing pin 11. Then, pull the cover plate 3 upward, and the cover plate 3 drives the fixing plate 12 to disengage from the fixing pin 11, causing the stirring rod 5 and the scraper 6 to move out of the fixed box 1. This facilitates thorough cleaning of the inside of the fixed box 1 and the stirring rod 5 and scraper 6, preventing residue.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An easy-to-flushing oilfield water shut-off and profile control agent injection device, comprising a fixed box (1), a support frame (2), a stirring rod (5), a valve (7), and a connecting pipe (8); Its features are, Also includes: Cover plate (3), the cover plate (3) is fitted to the upper end of the fixed box (1), and a ring-shaped flushing pipe (9) is fixedly installed at the lower end of the cover plate (3). Multiple nozzles (10) are installed at equal angles at the lower end of the flushing pipe (9). The nozzle (10) is inclined outward toward the inner wall of the fixed box (1) at the lower end of the flushing pipe (9); Multiple sets of scrapers (6) are fixedly connected to the side of the stirring rod (5) away from the vertical central axis of the fixed box (1), and the scrapers (6) are attached to the inner wall of the fixed box (1). The fixing mechanism (14) includes a connecting plate (15), a connecting block (16), a vertical plate (17), a connecting rod (18), and a connecting cap (19). The fixing mechanism (14) is symmetrically arranged on the left and right sides of the cover plate (3), and the fixing mechanism (14) drives the cover plate (3) to form a disassembly structure at the upper end of the fixing box (1).

2. The oilfield water shut-off and profile control agent injection device for easy flushing according to claim 1, characterized in that: The fixed box (1) is fixedly connected to the upper end of the support frame (2), and a valve (7) is fixedly installed at the lower end of the fixed box (1), and the valve (7) is connected to the connecting pipe (8).

3. The oilfield water shut-off and profile control agent injection device for easy flushing according to claim 1, characterized in that: The upper end of the cover plate (3) is provided with a feed pipe, and the front side of the upper end of the cover plate (3) is provided with a water inlet pipe. The lower end of the water inlet pipe is connected to the flushing pipe (9), and the water inlet pipe is connected to an external water pump.

4. The oilfield water shut-off and profile control agent injection device for easy flushing according to claim 3, characterized in that: A motor (4) for driving is fixedly installed in the middle of the upper end of the cover plate (3), and a stirring rod (5) is fixedly connected to the output end of the motor (4). Fixing plates (12) are fixedly connected to both the left and right ends of the cover plate (3), and a protrusion (13) for positioning is fixedly connected to the outer side of the fixing plate (12).

5. The oilfield water shut-off and profile control agent injection device for easy flushing according to claim 4, characterized in that: The motor (4) drives the stirring rod (5) and scraper (6) to rotate in the fixed box (1).

6. The oilfield water shut-off and profile control agent injection device for easy flushing according to claim 1, characterized in that: The upper left and right sides of the fixed box (1) are fixedly connected with vertical fixing pins (11), and the fixing pins (11) are inserted into the fixing plate (12). The lower front and rear sides of the fixing pins (11) are fixedly connected with connecting blocks (16).

7. The oilfield water shut-off and profile control agent injection device for easy flushing according to claim 6, characterized in that: The lower end of the fixing pin (11) is fitted with a connecting plate (15), and the connecting plate (15) and the connecting block (16) form a left-right sliding structure. The upper end of the outer side of the connecting plate (15) is fixedly connected with a vertical plate (17), and the upper end of the vertical plate (17) is engaged with a protrusion (13).

8. The oilfield water shut-off and profile control agent injection device for easy flushing according to claim 7, characterized in that: A connecting rod (18) is inserted into the outer side of the connecting plate (15), and the connecting rod (18) is fixedly connected to the outer side of the lower end of the fixing pin (11).

9. The oilfield water shut-off and profile control agent injection device for easy flushing according to claim 8, characterized in that: The outer surface of the connecting rod (18) is threaded with a connecting cap (19) for locking, and the connecting cap (19) is fitted to the connecting plate (15).

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