Self-circulation profile control and flooding injection device

Abstract

The utility model relates to the technical field of injection devices, in particular to a self-circulation profile control and flooding injection device. The self-circulation profile control and flooding injection device comprises an outer injection pipe and an inner injection pipe, the inner injection pipe is movably erected in the outer injection pipe, and a driving assembly is installed on the outer injection pipe; and the driving assembly comprises a fixing frame, the fixing frame is fixedly connected with the top of the outer injection pipe through a bolt, a driving rod which is rotationally connected is erected in the center of the interior of the fixing frame, and rotating shafts which are rotationally connected are erected on the two sides of the interior of the fixing frame. When the self-circulation profile control and flooding injection device is used, the rotating rotating rod can drive the lower vertical plate and the inner injection pipe to continuously swing up and down in a reciprocating mode through the connecting rod and the rotating frame on the outer wall, and compared with the mode that a spring is stretched and reset through gravity, the continuous driving mode has the advantages that the self-circulation profile control and flooding injection device is convenient to use. The driving is more stable, so that the operation stability of the device can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection device technical field especially relates to a self circulating profile control and profile control flooding injection device. BACKGROUND

[0002] Two problems exist in the middle and later stages of oilfield water injection development: one is that the water cut of production wells increases, which increases the invalid load of the pumping unit and improves the ground water treatment cost. The second is that due to the seepage and scouring of injected water underground for a long time, a water flow dominant channel is formed in the reservoir, and it is difficult for the remaining oil to be swept, greatly reducing the recovery degree. The technical measure widely adopted at present is profile control and profile control flooding. Chemical agents are injected from water injection wells to plug the dominant channel and adjust the water absorption profile of the injection interval, forcing the subsequent injected water to flow around to increase the swept volume. After the chemical agent solidifies or expands, the permeability of the high permeability layer can also be reduced, and the oil displacement effect of the injected water in the low permeability layer can be improved.

[0003] The prior art patent with the patent number CN220203878U discloses an injection well online profile control and profile control flooding injection device. According to the content recorded in the description, the device mainly realizes reciprocating motion by combining with the jacking reset of the spring. When the amount of the agent loaded in the inner injection pipe is large and the overall weight is relatively large, the probability of spring reset failure is increased, thereby reducing the stability of the device operation.

[0004] Therefore, it is necessary to provide a new self-circulating profile control and profile control flooding injection device to solve the above technical problems. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the utility model provides a self-circulating profile control and profile control flooding injection device.

[0006] The self-circulating profile control and profile control flooding injection device provided by the utility model comprises an outer injection pipe and an inner injection pipe, the inner injection pipe is movably arranged in the outer injection pipe, a driving assembly is mounted on the outer injection pipe,

[0007] The driving assembly comprises a fixed frame, the fixed frame is fixedly connected with the top of the outer injection pipe through bolts, a driving rod is rotatably arranged in the center of the fixed frame, rotating shafts are rotatably arranged on both sides of the fixed frame, gears are fixedly connected on the outer walls of the driving rod and the rotating shafts, toothed belts are meshingly connected between the gears on both sides, and a motor for driving the driving rod is fixedly installed on the fixed frame;

[0008] The connecting disc is fixedly connected to the two ends of the rotating shaft, the connecting rod is rotatably connected to the outer wall of the connecting disc, the rotating frame is rotatably connected to the bottom end of the connecting rod, the vertical rod is fixedly connected to the bottom of the rotating frame, and the vertical rod is fixedly connected to the outer wall of the inner injection pipe.

[0009] Preferably, the fixed frame is provided with a linkage assembly, the linkage assembly comprises a support frame, the support frame is fixedly installed on the top of the fixed frame, a linkage plate is sleeved on the support frame in a sliding connection mode, and a gas bag is arranged between the linkage plate and the support frame in a fixed connection mode.

[0010] Preferably, the outer wall of the gas bag is provided with a communication air inlet pipe and an exhaust hose, and one-way valves are arranged on the air inlet pipe and the exhaust hose.

[0011] Preferably, a spring is sleeved on the support rod in the support frame, the top end of the spring is fixedly connected to the support frame, and the bottom end of the spring is fixedly connected to the top of the linkage plate.

[0012] Preferably, a driving cam is sleeved on the outer wall of the driving rod in a fixed connection mode, the driving cam is of an elliptical structure, and the outer wall of the driving cam is in abutment with and slidingly connected to the bottom of the linkage plate.

[0013] Preferably, a guide block is arranged in the inner injection pipe in a fixed connection mode, a guide rod is inserted into the guide block in a sliding connection mode, and the guide rod is fixedly connected to the outer wall of the inner injection pipe.

[0014] Preferably, a top cover is arranged on the top of the inner injection pipe, a feeding opening is arranged on the top cover, and a butt joint pipe is inserted into the inner injection pipe in a communication mode on both sides of the top cover, the butt joint pipe is in communication with the bottom end of the exhaust hose, and a valve is arranged at the bottom end of the inner injection pipe.

[0015] Compared with the related art, the self-circulation profile control and flooding injection device has the following beneficial effects:

[0016] 1、The rotating rod can drive the vertical plate and the inner injection pipe to continuously reciprocate up and down through the connecting rod and the rotating frame on the outer wall during use, and compared with the spring reset mode through gravity, the continuous driving mode is more stable, so that the operation stability of the device can be improved.

[0017] 2、The utility model discloses a drive assembly works simultaneously, still can through the drive cam on the outer wall of drive rod extrude the linkage board in linkage assembly, the linkage board under the extrusion pressure can extrude the gasbag in upper part at this moment, and the gas in the gasbag under the extrusion will flow to the inside of the injection pipe through the exhaust hose, thereby can realize the injection pressurization of the inside of the injection pipe, realizes the auxiliary drive of the injection pipe raw material, makes the discharge of raw material more smooth. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structure schematic diagram of a preferred embodiment of the self-circulation profile control and flooding injection device is provided.

[0019] Figure 2 The structure schematic diagram of the drive assembly and linkage assembly is shown. Figure 1 The structure schematic diagram of the drive assembly is shown.

[0020] Figure 3 The structure schematic diagram of the drive assembly is shown. Figure 2 The structure schematic diagram of the linkage assembly is shown.

[0021] Figure 4 The structure schematic diagram of the linkage assembly is shown. Figure 2 The structure schematic diagram of the injection pipe and its components is shown.

[0022] Figure 5 The structure schematic diagram of the injection pipe and its components is shown. Figure 1 The partial section structure schematic diagram of the injection pipe is shown.

[0023] Figure 6 The partial section structure schematic diagram of the injection pipe is shown. Figure 1

[0024] Mark No. in drawing: 1, injection pipe; 11, guide block; 2, injection pipe; 21, guide rod; 22, vertical rod; 23, top cover; 231, charging port; 232, butt joint pipe; 3, drive assembly; 31, fixed frame; 311, drive rod; 32, rotating shaft; 321, connecting disc; 322, connecting rod; 323, rotating frame; 33, gear; 331, toothed belt; 34, drive cam; 4, linkage assembly; 41, support frame; 42, gasbag; 421, gas inlet pipe; 422, exhaust hose; 43, linkage board; 431, spring. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following is combined with the drawing and example, and the utility model is further described in detail. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0026] The specific implementation of the utility model is described in detail in the following combined with specific embodiments. ​

[0027] In the embodiment of the utility model, please refer to Figures 1 to 6 The utility model discloses an injection device for self-circulation profile control and profile control, which comprises an outer injection pipe 1 and an inner injection pipe 2.

[0028] In the embodiment of the utility model, please refer to Figures 1 to 6 The inner injection pipe 2 is movably arranged in the outer injection pipe 1, and the outer injection pipe 1 is provided with a driving assembly 3; the driving assembly 3 comprises a fixed frame 31, the fixed frame 31 is fixedly connected to the top of the outer injection pipe 1 through bolts, a driving rod 311 is movably arranged in the center of the fixed frame 31, rotating shafts 32 are movably arranged on both sides of the fixed frame 31, gears 33 are fixedly arranged on the outer walls of the driving rod 311 and the rotating shafts 32, toothed belts 331 are movably arranged between the gears 33, and a motor is fixedly arranged on the fixed frame 31 to drive the driving rod 311; the rotating shafts 32 are provided with fixedly connected connecting plates 321 at both ends, the connecting plates 321 are provided with rotatingly connected connecting rods 322 on the outer walls, the connecting rods 322 are provided with rotatingly connected rotating frames 323 at the bottom ends, the rotating frames 323 are provided with fixedly connected vertical rods 22 at the bottom, and the vertical rods 22 are fixedly connected to the outer wall of the inner injection pipe 2.

[0029] It should be noted that: through the arrangement of the driving assembly 3, in the process of use, the rotating rod can drive the vertical plate below and the inner injection pipe 2 to continuously reciprocate up and down through the connecting rod 322 and the rotating frame 323 on the outer wall, and the continuous driving mode is more stable than the mode of driving through the spring 431 by gravity stretching reset, so that the operation stability of the device can be improved.

[0030] It should be noted that: the fixed frame 31 is provided with a protective cover outside the toothed belt 331 to protect the toothed belt 331 and the gears 33, and the gear 33 on the driving rod 311 is larger than the gears 33 on both sides, so that the contact area of the gears 33 and the toothed belt 331 can be increased, and the driving effect can be improved.

[0031] In the embodiment of the utility model, please refer to Figures 1 to 6The fixed frame 31 is provided with a linkage assembly 4, the linkage assembly 4 comprises a support frame 41, the support frame 41 is fixedly installed at the top of the fixed frame 31, a linkage plate 43 is sleeved and connected in sliding mode on the support frame 41, and a gas bag 42 is arranged in fixed connection between the linkage plate 43 and the support frame 41, the gas bag 42 is provided with a gas inlet pipe 421 and an exhaust hose 422 in communication, and one-way valves are arranged on the gas inlet pipe 421 and the exhaust hose 422, a spring 431 is sleeved on a support rod in the support frame 41, the top end of the spring 431 is fixedly connected with the support frame 41, and the bottom end of the spring 431 is fixedly connected with the top of the linkage plate 43, a driving cam 34 is sleeved and fixedly connected on the outer wall of the driving rod 311, the driving cam 34 is in an elliptical structure, and the outer wall of the driving cam 34 is in abutment and sliding connection with the bottom of the linkage plate 43.

[0032] It should be noted that, through the arrangement of the elliptical structure driving cam 34, when the driving assembly 3 works, the rotating driving cam 34 can realize different depth extrusion on the upper linkage plate 43, and through the combination of the spring 431, the reciprocating extrusion of the gas bag 42 can be realized, so that the gas bag 42 can smoothly inhale and exhale, and the gas discharged from the gas bag 42 can flow into the inner injection pipe 2 through the exhaust hose 422, so that the inner injection pipe 2 can be pressurized, the auxiliary driving of the internal plugging agent can be realized, and the smoothness of the plugging agent discharge can be improved.

[0033] In the embodiment of the utility model, please refer to Figures 1 to 6 The inner injection pipe 1 is provided with a guide block 11 in fixed connection, the guide block 11 is provided with a guide rod 21 in sliding connection, and the guide rod 21 is fixedly connected with the outer wall of the inner injection pipe 2.

[0034] It should be noted that, through the sliding connection between the guide block 11 and the guide rod 21, when the driving assembly 3 drives the inner injection pipe 2 to move vertically, the guide block 11 can guide the inner injection pipe 2 vertically through the guide rod 21, so that the inner injection pipe 2 can stably reciprocate vertically.

[0035] In the embodiment of the utility model, please refer to Figures 1 to 6 The top of the inner injection pipe 2 is provided with a top cover 23, the top cover 23 is provided with a charging port 231, and the two sides in the top cover 23 are provided with a butt joint pipe 232 in communication, the butt joint pipe 232 is in communication with the bottom end of the exhaust hose 422, and the bottom end of the inner injection pipe 2 is provided with a valve.

[0036] Need to explain: through the setting of the charging port 231, in use can facilitate the staff to inject into the pipe 2 in the addition of plugging agent, in order to facilitate the device to carry on the injection operation, and through the installation of the valve at the bottom end of the inner injection pipe 2, in use interval, when the valve is closed, the plugging agent in the inner injection pipe 2 can be blocked, and the phenomenon of random leakage can be avoided.

[0037] The working principle of the self-circulation profile control and flooding injection device provided by the utility model is as follows:

[0038] When using the device, the device can be fixedly installed at the required position, the port at the bottom of the outer injection pipe 1 is aligned with the crack, then the plugging agent can be added into the inner injection pipe 2 through the charging port 231, after the addition of the plugging agent is completed, the driving rod 311 in the driving assembly 3 is controlled to rotate, and at the same time, the valve of the injection pipe port is opened;

[0039] The rotating driving rod 311 can drive the rotating shaft 32 on the two sides to rotate through the meshing of the gear 33 on the outer wall and the toothed belt 331, at this time, the rotating rotating shaft 32 can drive the external connecting rod 322 to rotate through the connecting disc 321 at the two ends, and the rotating connecting rod 322 can drive the vertical rod 22 at the bottom and the inner injection pipe 2 below the vertical rod 22 to move up and down in the vertical direction through the rotating frame 323, and the vibration generated in the up-and-down movement of the inner injection pipe 2 can reduce the plugging phenomenon of the plugging agent in the inner injection pipe 2;

[0040] And in the process of rotating the driving rod 311, the external driving cam 34 can also be driven to rotate synchronously, since the cam is an elliptical structure, the linkage plate 43 in the linkage assembly 4 can be extruded at different depths, and when the driving cam 34 extrudes the linkage plate 43 to the maximum depth, the linkage plate 43 can extrude the air bag 42 above, at this time, the gas in the extruded air bag 42 can flow into the inner injection pipe 2 through the exhaust hose 422, so that the plugging agent in the inner injection pipe 2 can be pressurized and driven, and therefore the discharge smoothness of the plugging agent can be improved.

[0041] The circuit and control involved in the utility model are prior art, and will not be described in detail here.

[0042] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion made by using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A self-circulation profile control and flooding injection device, characterized in that, Include: The outer injection pipe (1) and the inner injection pipe (2), the inner injection pipe (2) is movably arranged in the outer injection pipe (1), the outer injection pipe (1) is provided with a driving assembly (3) on it; The driving assembly (3) includes a fixed frame (31), the fixed frame (31) is fixedly connected with the top of the outer injection pipe (1) by bolts, the center of the fixed frame (31) is provided with a driving rod (311) connected in rotation, both sides of the fixed frame (31) are provided with rotating shafts (32) connected in rotation, both sides of the outer wall of the driving rod (311) and the rotating shaft (32) are provided with fixedly connected gears (33), both sides of the gears (33) are provided with meshing connection toothed belts (331), and the fixed frame (31) is fixedly provided with a motor for driving the driving rod (311); Both ends of the rotating shaft (32) are provided with fixedly connected connecting discs (321), the outer wall of the connecting disc (321) is provided with a connecting rod (322) connected in rotation, the bottom end of the connecting rod (322) is provided with a rotating frame (323) connected in rotation, the bottom of the rotating frame (323) is provided with a fixedly connected vertical rod (22), and the vertical rod (22) is fixedly connected with the outer wall of the inner injection pipe (2).

2. The self-circulation profile control and flooding injection device according to claim 1, characterized in that, The fixed frame (31) is provided with a linkage assembly (4), the linkage assembly (4) includes a support frame (41), the support frame (41) is fixedly installed on the top of the fixed frame (31), the support frame (41) is provided with a linkage plate (43) connected in sliding, and the linkage plate (43) and the support frame (41) are provided with a fixedly connected air bag (42).

3. The self-circulation profile control and flooding injection device according to claim 2, characterized in that, The outer part of the air bag (42) is provided with a communication air inlet pipe (421) and an exhaust hose (422), and the air inlet pipe (421) and the exhaust hose (422) are provided with one-way valves.

4. The self-circulation profile control and flooding injection device according to claim 2, characterized in that, The support rod in the support frame (41) is provided with a spring (431), the top end of the spring (431) is fixedly connected with the support frame (41), and the bottom end of the spring (431) is fixedly connected with the top of the linkage plate (43).

5. The self-circulation profile control and flooding injection device according to claim 1, characterized in that, The outer wall of the driving rod (311) is provided with a fixedly connected driving cam (34), the driving cam (34) is an oval structure, and the outer wall of the driving cam (34) is in abutment and sliding connection with the bottom of the linkage plate (43).

6. The self-circulation profile control and flooding injection device according to claim 1, characterized in that, The inside of the outer injection pipe (1) is provided with a fixedly connected guide block (11), the inside of the guide block (11) is provided with a slidingly connected guide rod (21), and the guide rod (21) is fixedly connected with the outer wall of the inner injection pipe (2).

7. The self-circulation profile control and flooding injection device according to claim 3, characterized in that, The top of the inner injection pipe (2) is provided with a top cover (23), the top cover (23) is provided with a feeding port (231), both sides of the inside of the top cover (23) are provided with a communication butt joint pipe (232), the butt joint pipe (232) is in communication with the bottom end of the exhaust hose (422), and the bottom end of the inner injection pipe (2) is provided with a valve.

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