Blockage removing and injection increasing device for water injection well

Abstract

The utility model relates to the technical field of water injection well augmented injection equipment, in particular to a water injection well plug removal augmented injection device. The water injection well blockage removing and injection increasing device comprises a shell, an upper sealing cover, a middle plate and a lower sealing cover are sequentially arranged in the shell from top to bottom, a plurality of grooves are evenly formed in the outer side of the shell, and the interior of the shell is partitioned into a jet flow cavity through the upper sealing cover and the lower sealing cover; the ultrasonic assembly used for emitting ultrasonic waves to remove blockage is mounted below the middle plate; the multiple jet flow assemblies are embedded in the multiple grooves, each jet flow assembly comprises a connecting block, the connecting blocks are fixedly installed at the bottom ends of the grooves, supporting plates are hinged to the connecting blocks, guide wheel frames are fixedly installed at the top ends of the supporting plates, guide wheels are installed at the front ends of the guide wheel frames, and push-pull rods are hinged to the top ends of the guide wheel frames; and a driving piece for driving the push-pull rod to move is mounted on the shell. The water injection well plug removal and augmented injection device has the advantage of being efficient and stable in plug removal.

Description

TECHNICAL FIELD

[0001] The utility model relates to water injection well injection equipment technical field especially, relates to a water injection well plugging removal injection increasing device. BACKGROUND

[0002] Petroleum is an important energy. In the oilfield development process, the oil reserves of underground reservoir are decreasing, which leads to the continuous decrease of well bottom pressure, thereby affecting the exploitation quantity and efficiency of oilfield and the exploitation safety of oilfield. By injecting water into underground reservoir through water injection well, the reservoir pressure can be effectively controlled, and the rapid increase of water cut in oilfield can be controlled to a certain extent. Due to the limitation of water injection technology and poor quality of injected water, long-term water injection operation will cause the plugging of water injection well, so it is necessary to remove the plugging regularly and increase the injection volume of water injection well.

[0003] The water injection well plugging removal injection increasing device is a special equipment for solving the problem of the decrease of water injection volume caused by the plugging of oilfield water injection well. The plugging material in the wellbore and near wellbore zone is removed by physical or chemical means to restore or improve the water injection efficiency. The tool for plugging removal is classified according to the plugging removal mode, mainly including high-pressure water jet device, ultrasonic / vibration tool and mechanical scraping tool. The conventional injection increasing device has a single function, and cannot stably advance and remove the plugging in the complex downhole.

[0004] Therefore, it is necessary to provide a water injection well plugging removal injection increasing device to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0005] In order to solve the above technical problems, the utility model provides a water injection well plugging removal injection increasing device.

[0006] The water injection well plugging removal injection increasing device provided by the utility model comprises a shell, an upper cover, an intermediate plate and a lower cover which are sequentially arranged from top to bottom in the shell, a plurality of grooves are uniformly arranged on the outer side of the shell, the upper cover and the lower cover separate the inside of the shell into a jet flow cavity,

[0007] An ultrasonic assembly is arranged below the intermediate plate and used for emitting ultrasonic waves to remove the plugging.

[0008] A plurality of jet flow assemblies are arranged, the plurality of jet flow assemblies are embedded in the plurality of grooves, each jet flow assembly comprises a connecting block, the connecting block is fixedly installed at the bottom end of the groove, a supporting plate is hingedly connected to the connecting block, a guide wheel frame is fixedly installed at the top end of the supporting plate, a guide wheel is installed at the front end of the guide wheel frame, a push-pull rod is hingedly connected to the top end of the guide wheel frame, a driving piece is installed on the shell and used for driving the push-pull rod to move, a jet flow pipe is embedded on the supporting plate, a plurality of jet flow nozzles are uniformly embedded on the outer side of the jet flow pipe, and the inner bottom of the jet flow pipe is communicated with the jet flow cavity through a metal hose.

[0009] Preferably, the driving member includes a supporting sleeve, which is fixedly installed in the middle of the top end of the intermediate plate, and an electric push rod is installed in the supporting sleeve, the telescopic rod of the electric push rod passes through the upper cover and is fixedly connected to the connecting disk, the connecting disk is integrally formed with several transmission plates, and the ends of several transmission plates facing away from the connecting disk are fixedly installed with driving rods, the bottom end of the driving rod is fixedly installed with a driving ring, the driving ring is hinged to the end of the push-pull rod facing away from the guide wheel frame, and the driving ring slides with the top of the shell.

[0010] Preferably, a sliding groove for the transmission plate to slide is provided on the top of the shell.

[0011] Preferably, a rod seal for sealing the telescopic rod of the electric push rod is installed on the upper sealing cover.

[0012] Preferably, the ultrasonic component includes a waterproof box, which is fixedly installed on the bottom of the middle plate. An ultrasonic generator is installed in the waterproof box, and the ultrasonic generator is electrically connected to a pulse rod, which is installed on the lower cover.

[0013] Preferably, a connecting sleeve is fixedly mounted on the top end of the shell, and a clamping ring is mounted on the top end of the connecting sleeve.

[0014] Preferably, a liquid inlet pipe communicating with the jet cavity is installed on one side of the shell.

[0015] Compared with related technologies, the water injection well unblocking and injection device provided by the utility model has the following beneficial effects:

[0016] 1. The utility model provides a device for unblocking and increasing injection of water injection wells. By arranging a jet assembly in a groove of a housing, the jet assembly utilizes a connecting block, a support plate, a guide wheel frame, a push-pull rod, a jet pipe, and a jet nozzle. Driven by a driving member, the jet assembly can stably move along the water injection well while simultaneously performing stepped jet flushing on the well wall of the water injection well, thereby improving the effect of unblocking the water injection well.

[0017] 2. Synchronously set up the ultrasonic component. While jet flushing and unblocking, use the ultrasonic generator to synchronously emit high-frequency ultrasonic waves to the well wall. The vibration effect causes oscillations between molecules, causing the blockage to deform and move. The pressure change of the ultrasonic wave can promote the dissolution and decomposition of solutes in the liquid, and can effectively remove various types of blockages to achieve unblocking. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a preferred embodiment of the water injection well unblocking and injection-increasing device provided by the utility model;

[0019] Figure 2This is a schematic cross-sectional view of the water injection well unblocking and injection-increasing device provided by the utility model;

[0020] Figure 3 A schematic structural diagram of the housing provided by the present invention;

[0021] Figure 4 A schematic diagram of the structure of a driving member installed on the middle plate provided by the utility model;

[0022] Figure 5 This is a structural schematic diagram of a push-pull rod installed on the drive ring provided by the utility model.

[0023] Numbers in the figure: 1. Shell; 11. Upper cover; 12. Middle plate; 13. Lower cover; 101. Groove; 102. Jet chamber; 2. Ultrasonic assembly; 21. Waterproof box; 22. Ultrasonic generator; 23. Pulse rod; 3. Jet assembly; 31. Connecting block; 32. Support plate; 33. Guide wheel frame; 34. Guide wheel; 35. Push-pull rod; 36. Jet tube; 37. Jet nozzle; 4. Driving part; 41. Support sleeve; 42. Electric push rod; 43. Connecting disk; 431. Transmission plate; 44. Driving rod; 45. Driving ring; 5. Connecting sleeve; 6. Snap ring; 7. Liquid inlet pipe. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0026] See also Figures 1 to 5 The present invention provides a device for removing blockage and increasing injection volume in a water injection well, the device comprising:

[0027] The housing 1 includes an upper sealing cover 11, a middle plate 12, and a lower sealing cover 13, which are arranged in sequence from top to bottom. A plurality of grooves 101 are evenly formed on the outer side of the housing 1. The upper sealing cover 11 and the lower sealing cover 13 seal the interior of the housing 1 into a jet cavity 102.

[0028] An ultrasonic component 2 for emitting ultrasonic waves to remove blockage is installed below the middle plate 12;

[0029] The jet assembly 3 is provided with a plurality of jet assemblies 3 embedded in the grooves 101, and the jet assembly 3 comprises a connecting block 31 fixedly installed at the bottom end of the groove 101, and the connecting block 31 is hingedly connected with a support plate 32, the top end of the support plate 32 is fixedly installed with a guide wheel frame 33, the front end of the guide wheel frame 33 is installed with a guide wheel 34, the top end of the guide wheel frame 33 is hingedly connected with a push-pull rod 35, the shell 1 is installed with a driving member 4 for driving the push-pull rod 35 to move, the support plate 32 is embedded with a jet pipe 36, a plurality of jet nozzles 37 are uniformly embedded on the outside of the jet pipe 36, and the inside bottom of the jet pipe 36 is communicated with the jet cavity 102 through a metal hose.

[0030] The driving member 4 comprises a support sleeve 41 fixedly installed at the top middle of the intermediate plate 12, and an electric push rod 42 is installed in the support sleeve 41, the telescopic rod of the electric push rod 42 is fixedly connected with a connecting disc 43 through the upper cover 11, the connecting disc 43 is integrally formed with a plurality of transmission plates 431, the ends of the plurality of transmission plates 431 away from the connecting disc 43 are fixedly installed with driving rods 44, the bottom end of the driving rod 44 is fixedly installed with a driving ring 45, the end of the driving ring 45 away from the guide wheel frame 33 is hingedly connected with the push-pull rod 35, and the driving ring 45 is in sliding fit with the top of the shell 1.

[0031] The top of the shell 1 is provided with a sliding groove for the sliding of the transmission plate 431.

[0032] It should be noted that when the shell 1 is used for plugging removal operation of the injection well in the well, the electric push rod 42 of the driving member 4 drives the connecting disc 43 to drive the driving rod 44 to move downward, and when moving, the driving ring 45 moves downward along the top end of the shell 1, and when moving downward, the driving push-pull rod 35 moves downward, and the push-pull rod 35 and the support plate 32 are hingedly connected through the guide wheel frame 33, thereby forming a connecting rod mechanism, when the push-pull rod 35 moves downward, the support plate 32 expands outward from the shell 1 around the axis of the connecting block 31, and expands to the guide wheel 34 contacting the well wall, thereby supporting the entire shell 1 in the middle of the injection well, thereby improving the stability of the downward movement, and when moving, the jet cavity 102 injects flushing liquid into the jet pipe 36 and the jet nozzle 37, the jet nozzle 37 sprays flushing liquid to the well wall, thereby removing the injection well, and the ultrasonic assembly 2 can be started, and the ultrasonic wave generator 22 and the pulse rod 23 are used to emit high-frequency ultrasonic waves to the well wall in the well, and the vibration effect is used to make the molecules vibrate, so that the blockage is deformed and moved, the pressure change of the ultrasonic wave can promote the dissolution and decomposition of the solute in the liquid, and various types of blockage can be effectively removed to achieve plugging removal.

[0033] It also needs to be explained that: the side of the shell 1 is provided with a liquid inlet pipe 7 communicated with the jet cavity 102, so that the flushing liquid fills into the jet cavity 102 after being connected with the liquid inlet pipe 7 through the pipeline, and then is communicated with the jet pipe 36 through the metal hose, so that the liquid inlet jet flushing is realized, and when the support plate 32 is unfolded, the jet pipe 36 is driven to be inclined to the well wall, so that the jet nozzle 37 is in a stepped type to the well wall during the jet flushing, and the blockage on the well wall can be flushed by different water pressures, so that the blockage is easy to be loosened, and the flushing effect is further improved, and in order to realize the comprehensive flushing of the well wall, a plurality of jet assemblies 3 are arranged in a circumferential array on the shell 1, and the jetting range of the jet nozzles 37 combined on the plurality of jet assemblies 3 can cover the whole well wall.

[0034] It is worth noting that: the upper cover 11 is provided with a rod sealing element sealing the telescopic rod of the electric push rod 42, so that the downhole liquid is prevented from flowing into the jet cavity 102 and the support sleeve 41 from the installation gap between the rod wall of the electric push rod 42 and the upper cover 11, so that the sealing of the top of the jet cavity 102 and the outside is maintained, and the whole jet cavity 102 can be protected, so that the downhole liquid does not erode the internal elements of the shell 1, and the outer layer of the telescopic rod of the electric push rod 42 needs to be coated with a corrosion-resistant coating for sufficient downhole protection.

[0035] In the embodiment of the utility model, please refer to Figures 1 to 5 , the ultrasonic assembly 2 includes a waterproof box 21, the waterproof box 21 is fixedly installed on the bottom of the middle plate 12, the waterproof box 21 is provided with an ultrasonic generator 22, the ultrasonic generator 22 is electrically connected with a pulse rod 23, and the pulse rod 23 is installed on the lower cover 13.

[0036] It needs to be explained that: the ultrasonic assembly 2 emits high-frequency ultrasonic waves to the well wall by using the ultrasonic generator 22 and the pulse rod 23 downhole, and the vibration effect is used to make the molecules vibrate, so that the blockage is deformed and moved, and the pressure change of the ultrasonic wave can promote the dissolution and decomposition of the solute in the liquid, so that the efficiency of the unblocking operation can be improved in cooperation with the jet assembly 3.

[0037] It also needs to be explained that: the shell 1 is provided with a through hole electrically connected with the ultrasonic generator 22, and the through hole through which the cable passes is sealed, so that the sealing of the jet cavity 102 is maintained while the ultrasonic generator 22 is electrically connected, and the waterproof protection of the ultrasonic generator 22 and the electric push rod 42 is realized.

[0038] In the embodiment of the utility model, please refer to Figures 1 to 5 , the top end of the shell 1 is fixedly provided with a connecting sleeve head 5, and the top end of the connecting sleeve head 5 is provided with a clamping ring 6.

[0039] It should be noted that when going down the well, the whole unblocking and injection device is sent down the well by connecting the downhole equipment with the clamping ring 6, so that efficient and stable unblocking operation can be carried out in the well.

[0040] The working principle of the water injection well unblocking and injection device provided by the utility model is as follows:

[0041] The downhole equipment is connected to the clamping ring 6 to send the entire unblocking and injection device into the well. When it is sent into the well, the liquid inlet pipe 7 is connected to the delivery pump through the delivery pipe, and the driving member 4 and the ultrasonic generator 22 are connected to the control equipment on the well through the load cable. Then the electric push rod 42 of the driving member 4 is controlled to drive the connecting plate 43 to drive the driving rod 44 to move downward. When moving, the driving ring 45 moves downward synchronously along the top of the shell 1, and drives the push-pull rod 35 to move downward when moving downward. The push-pull rod 35 and the support plate 32 are hinged through the guide wheel frame 33, thereby forming a connecting rod mechanism. When the push-pull rod 35 moves downward, the support plate 32 is driven to expand outward from the shell 1 around the axis of the hinge of the connecting block 31, and expands until the guide wheel 34 contacts To the well wall, thereby supporting the entire shell 1 in the middle of the water injection well, thereby improving its stability in downward movement. When moving, flushing liquid is injected into the jet tube 36 and the jet nozzle 37 through the jet cavity 102, and the jet nozzle 37 sprays flushing liquid to the well wall, thereby unblocking the water injection well. At the same time, the ultrasonic component 2 can be started, and the ultrasonic generator 22 and the pulse rod 23 are used underground to emit high-frequency ultrasonic waves to the well wall. The vibration effect is used to cause oscillations between molecules, causing the blockage to deform and move. The pressure change of the ultrasonic wave can promote the dissolution and decomposition of the solute in the liquid, and can effectively remove various types of blockages. The ultrasonic vibration of the jet frame can achieve efficient unblocking of the water injection well, which is convenient for subsequent injection.

[0042] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0043] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A water injection well unblocking and injection device, comprising: A shell (1), wherein an upper sealing cover (11), an intermediate plate (12) and a lower sealing cover (13) are sequentially provided in the shell (1) from top to bottom, and a plurality of grooves (101) are evenly provided on the outer side of the shell (1), and the upper sealing cover (11) and the lower sealing cover (13) seal the interior of the shell (1) into a jet cavity (102); It is characterized by further comprising: An ultrasonic component (2) for emitting ultrasonic waves to remove blockages, the ultrasonic component (2) being installed below the middle plate (12); A plurality of jet assemblies (3) are provided, wherein the plurality of jet assemblies (3) are embedded in a plurality of grooves (101), and the jet assemblies (3) include a connecting block (31), the connecting block (31) is fixedly mounted on the bottom end of the groove (101), and the connecting block (31) is hingedly connected to a support plate (32), a guide wheel frame (33) is fixedly mounted on the top end of the support plate (32), a guide wheel (34) is mounted on the front end of the guide wheel frame (33), a push-pull rod (35) is hingedly mounted on the top end of the guide wheel frame (33), a driving member (4) for driving the push-pull rod (35) to move is mounted on the shell (1), a jet tube (36) is embedded on the support plate (32), a plurality of jet nozzles (37) are evenly embedded on the outer side of the jet tube (36), and the inner bottom of the jet tube (36) is connected to the jet cavity (102) through a metal hose.

2. The water injection well unblocking and injection device according to claim 1, characterized in that: The driving member (4) includes a supporting sleeve (41), which is fixedly mounted on the middle of the top end of the intermediate plate (12), and an electric push rod (42) is installed in the supporting sleeve (41), and the telescopic rod of the electric push rod (42) passes through the upper sealing cover (11) and is fixedly connected to the connecting disk (43), and the connecting disk (43) is integrally formed with a plurality of transmission plates (431), and the ends of the plurality of transmission plates (431) facing away from the connecting disk (43) are all fixedly mounted with a driving rod (44), and the bottom end of the driving rod (44) is fixedly mounted with a driving ring (45), and the driving ring (45) is hinged to the end of the push-pull rod (35) facing away from the guide wheel frame (33), and the driving ring (45) is slidably matched with the top of the shell (1).

3. The water injection well unblocking and injection device according to claim 2, characterized in that: The top of the housing (1) is provided with a sliding groove for the transmission plate (431) to slide.

4. The water injection well unblocking and injection device according to claim 2, characterized in that: A rod seal for sealing the telescopic rod of the electric push rod (42) is installed on the upper sealing cover (11).

5. The water injection well unblocking and injection device according to claim 1, characterized in that: The ultrasonic assembly (2) comprises a waterproof box (21), the waterproof box (21) being fixedly mounted on the bottom of the intermediate plate (12), an ultrasonic generator (22) being mounted in the waterproof box (21), the ultrasonic generator (22) being electrically connected to a pulse rod (23), and the pulse rod (23) being mounted on the lower cover (13).

6. The water injection well unblocking and injection device according to claim 1, characterized in that: A connecting sleeve (5) is fixedly mounted on the top end of the housing (1), and a clamping ring (6) is mounted on the top end of the connecting sleeve (5).

7. The water injection well unblocking and injection device according to claim 1, characterized in that: A liquid inlet pipe (7) communicating with the jet cavity (102) is installed on one side of the housing (1).

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