Oilfield water injection profile control agent injection device

Abstract

The utility model relates to the technical field of oilfield exploitation equipment, in particular to an oilfield water injection profile control agent injection device. The oilfield water injection profile control agent injection device comprises a stirring box and a liquid outlet pipe installed at the bottom end of the stirring box. The liquid inlet pipe is rotationally installed at the top end of the stirring box, a mixing and stirring assembly is installed at the end, extending into the stirring box, of the liquid inlet pipe, a conveying mechanism is installed in the liquid outlet pipe and comprises a liquid guide pipe rotationally installed in the liquid outlet pipe, and spiral blades are fixedly installed at the end, extending into the liquid outlet pipe, of the liquid guide pipe; a plurality of punched holes are formed in the positions, located in gaps of the spiral blades, of the liquid guide pipe, a first motor for driving the liquid guide pipe to rotate is installed at one end of the liquid outlet pipe, a water pump is further fixedly installed on the liquid outlet pipe, and the liquid outlet end of the water pump is connected with an adapter ring in butt joint with the liquid guide pipe. The oil field water injection profile control agent injection device has the advantage of being even in stirring and mixing.

Description

Technical Field

[0001] The utility model relates to the technical field of oilfield mining equipment, in particular to an oilfield water injection profile control agent injection device. Background Art

[0002] An oil field refers to an area with rich oil buried underground. The size and reserves of an oil field are important indicators for evaluating its economic value. Large or extra-large oil fields usually have higher mining value. The development and management of oil fields involve many aspects. In oil and gas production, with the production of oil and gas wells, the water injection volume gradually increases, the water level gradually rises, and the high-permeability flow channel begins to break through, causing the oil and gas wells to be gradually flooded and the oil and gas production capacity of the oil and gas wells to be reduced. In order to further improve the recovery rate of oil and gas wells, it is often necessary to perform profile adjustment and water plugging on the oil and gas wells to reduce water production in the oil wells. Water and plugging agents are often injected into the oil pipes through profile adjustment and water plugging injection devices. The plugging agents and water flow downward along the oil pipes, thereby sealing the breakthrough position to avoid water production in the oil wells.

[0003] However, since the plugging agent used for profile control is liquid and viscous after proportioning, it needs to be stirred with the injection water before being transported and injected. However, the existing stirring device stirs the viscous plugging agent unevenly, which affects the injection and use of the plugging agent.

[0004] Therefore, it is necessary to provide a new oilfield water injection profile control agent injection device to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an oilfield water injection profile control agent injection device.

[0006] The oilfield water injection profile control agent injection device provided by the utility model comprises: a stirring box, and a liquid outlet pipe installed at the bottom end of the stirring box;

[0007] The liquid inlet pipe is rotatably mounted on the top of the mixing box, and a mixing assembly is installed on the end of the liquid inlet pipe extending into the mixing box. A conveying mechanism is installed in the liquid outlet pipe, and the conveying mechanism includes a liquid guide tube rotatably mounted in the liquid outlet pipe, and a spiral blade is fixedly mounted on the end of the liquid guide tube extending into the liquid outlet pipe, and a plurality of punching holes are provided on the liquid guide tube at the gap between the spiral blades. A motor for driving the liquid guide tube to rotate is installed on one end of the liquid outlet pipe, and a water pump is also fixedly mounted on the liquid outlet pipe, and the liquid outlet end of the water pump is connected to a adapter ring docked with the liquid guide tube.

[0008] Preferably, the mixing assembly includes a dispersion plate fixedly mounted on the liquid inlet pipe, the liquid inlet pipe is evenly provided with a plurality of liquid guide holes above the dispersion plate, a plurality of stirring rods are installed on the liquid inlet pipe below the dispersion plate, and a plurality of the stirring rods are fixedly sleeved with grid plates.

[0009] Preferably, the dispersion disk is conical, and a plurality of corrugated strips are evenly installed on the conical surface of the dispersion disk.

[0010] Preferably, a plurality of scraping rods are installed on the liquid inlet pipe, and the outer side walls of the scraping rods are slidably matched with the inner side walls of the mixing box.

[0011] Preferably, a second motor for driving the liquid inlet pipe to rotate is installed at the top of the mixing box.

[0012] Preferably, a conveying screw is installed at the bottom end of the liquid inlet pipe.

[0013] Preferably, the bottom end of one side of the liquid outlet pipe is connected to a transfer pipe, and the transfer pipe is provided with a connecting flange.

[0014] Compared with related technologies, the oilfield water injection profile control agent injection device provided by the utility model has the following beneficial effects:

[0015] 1. The utility model provides an oilfield water injection profile control agent injection device. By arranging a mixing component on the liquid inlet pipe of the mixing box, and cooperating with the conveying mechanism in the liquid outlet pipe, the plugging agent can be mixed in stages, so that the plugging agent is mixed more evenly.

[0016] 2. The mixing assembly includes a scraper arranged on the liquid inlet pipe. The scraper is used to scrape the inside of the mixing box to reduce the adhesion of the plugging agent inside the mixing box, making it easier to clean the mixing box later. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a preferred embodiment of the oilfield water injection profile control agent injection device provided by the utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the oilfield water injection profile control agent injection device provided by the utility model;

[0019] Figure 3 This is a structural diagram of a mixing component installed on the liquid inlet pipe provided by the utility model;

[0020] Figure 4 This is a structural schematic diagram of a conveying mechanism installed on the liquid outlet pipe provided by the utility model.

[0021] Numbers in the figure: 1. Mixing box; 2. Liquid outlet pipe; 21. Adapter pipe; 3. Liquid inlet pipe; 301. Liquid guide hole; 31. Conveying screw; 4. Mixing assembly; 41. Dispersion disk; 411. Corrugated strip; 42. Stirring rod; 43. Grid plate; 44. Scraper; 5. Motor 2; 6. Conveying mechanism; 61. Liquid guide pipe; 62. Spiral blade; 63. Motor 1; 601. Punching hole; 7. Water pump; 71. Adapter ring. DETAILED DESCRIPTION

[0022] 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.

[0023] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0024] See also Figures 1 to 4 The present invention provides an oilfield water injection profile control agent injection device, which includes: a mixing tank 1, and a liquid outlet pipe 2 installed at the bottom end of the mixing tank 1, wherein the bottom end of one side of the liquid outlet pipe 2 is connected to a transfer pipe 21, and the transfer pipe 21 is provided with a connecting flange;

[0025] The liquid inlet pipe 3 is rotatably mounted on the top of the mixing box 1, and a mixing component 4 is installed at one end of the liquid inlet pipe 3 extending into the mixing box 1. A conveying mechanism 6 is installed in the liquid outlet pipe 2, and the conveying mechanism 6 includes a liquid guide tube 61 rotatably mounted in the liquid outlet pipe 2, and a spiral blade 62 is fixedly mounted at one end of the liquid guide tube 61 extending into the liquid outlet pipe 2, and a plurality of punching holes 601 are opened on the liquid guide tube 61 at the gap between the spiral blades 62. A motor 63 for driving the liquid guide tube 61 to rotate is installed at one end of the liquid outlet pipe 2, and a water pump 7 is also fixedly mounted on the liquid outlet pipe 2, and the liquid outlet end of the water pump 7 is connected to a adapter ring 71 docking with the liquid guide tube 61.

[0026] Among them, a motor 5 is installed at the top of the mixing box 1 to drive the liquid inlet pipe 3 to rotate.

[0027] It should be noted that: when in use, the plugging agent and the initially mixed water are introduced into the mixing box 1 through the liquid inlet pipe 3. After introduction, the motor 2 5 is used to drive the mixing component 4 to stir the mixed liquid in the mixing box 1, and then introduce it into the liquid outlet pipe 2. The liquid outlet pipe 2 uses a water pump 7 to introduce the final mixed water into the liquid guide pipe 61, and flush it out from the punching hole 601, and perform a secondary dilution ratio on the mixed liquid introduced into the liquid guide pipe 61, and then start the motor 1 63 to drive the liquid guide pipe 61 to drive the spiral blade 62 to rotate for the final stirring and transportation, so that the injection and stirring of the plugging agent are more uniform.

[0028] It is worth noting that the adapter ring 71 installed at the liquid outlet end of the water pump 7 is connected via a hard conduit, and the adapter ring 71 is rotatably connected to the liquid guide tube 61, thereby facilitating the liquid guide tube 61 to rotate around the adapter ring 71 in the liquid outlet pipe 2.

[0029] In the embodiments of the present invention, please refer to Figures 1 to 4The mixing assembly 4 includes a dispersion plate 41 fixedly mounted on the liquid inlet pipe 3, the liquid inlet pipe 3 is evenly provided with a plurality of liquid guide holes 301 above the dispersion plate 41, and a plurality of stirring rods 42 are mounted on the liquid inlet pipe 3 below the dispersion plate 41, and a plurality of the stirring rods 42 are fixedly sleeved with grid plates 43;

[0030] It should be noted that when the mixing assembly 4 is in use, the liquid is discharged from the liquid guide hole 301 of the liquid inlet pipe 3 and flows into the dispersion disk 41. The dispersion disk 41 scatters the liquid on the dispersion disk 41 when it rotates, and then the dispersed liquid is stirred by the stirring rod 42 and the grid plate 43.

[0031] In the embodiments of the present invention, please refer to Figures 1 to 4 The dispersion plate 41 is conical, and a plurality of corrugated strips 411 are evenly installed on the conical surface of the dispersion plate 41;

[0032] It should be noted that: when the plugging agent and the injected water are introduced into the dispersion plate 41 through the liquid guide hole 301, the dispersion plate 41 rotates along with the liquid inlet pipe 3, and the corrugated strips 411 are used to block and throw out the liquid flowing on the dispersion plate 41, so as to facilitate the dispersion and stirring of the plugging agent.

[0033] In this embodiment, a plurality of scraping rods 44 are installed on the liquid inlet pipe 3, and the outer wall of the scraping rod 44 slides with the inner wall of the mixing box 1. In this way, when the liquid inlet pipe 3 rotates, the scraping rod 44 is used to scrape the inner wall of the mixing box 1 to prevent the blocking agent from sticking to the inner wall of the mixing box 1 and affecting the proportioning and transportation.

[0034] In the embodiments of the present invention, please refer to Figure 1 and Figure 4 , a conveying screw 31 is installed at the bottom end of the liquid inlet pipe 3;

[0035] It should be noted that: when the liquid inlet pipe 3 rotates, it is convenient for the conveying screw 31 to smoothly guide the mixed liquid in the mixing box 1 into the liquid outlet pipe 2.

[0036] The working principle of the oilfield water injection profile control agent injection device provided by the utility model is as follows:

[0037] During use, the plugging agent and the initially mixed water are introduced into the dispersion disk 41 through the liquid guide hole 301 of the liquid inlet pipe 3, and then the motor 2 5 is started to drive the liquid inlet pipe 3 to rotate. During rotation, the dispersion disk 41 is driven to use the corrugated strips 411 to block and throw out the liquid flowing on the dispersion disk 41, and then the dispersed liquid is mixed and stirred by the stirring rod 42 and the grid plate 43, and then the mixed liquid is introduced into the liquid outlet pipe 2 through the conveying screw 31. After the introduction, the water pump 7 is started to introduce the finally mixed water into the liquid guide pipe 61 and flush it out from the punching hole 601, and the mixed liquid introduced into the liquid guide pipe 61 is diluted and proportioned for the second time, and then the motor 1 63 is started to drive the liquid guide pipe 61 to drive the spiral blade 62 to rotate for the final stirring and transportation, and water is injected into the well from the transfer pipe 21, so that the injection and stirring of the plugging agent are more uniform.

[0038] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0039] 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. An oilfield water injection profile control agent injection device, comprising: A stirring box (1), and a liquid outlet pipe (2) installed at the bottom end of the stirring box (1); It is characterized by further comprising: The liquid inlet pipe (3) is rotatably mounted on the top of the mixing box (1), and a mixing assembly (4) is mounted on one end of the liquid inlet pipe (3) extending into the mixing box (1). A conveying mechanism (6) is mounted in the liquid outlet pipe (2), and the conveying mechanism (6) comprises a liquid guide pipe (61) rotatably mounted in the liquid outlet pipe (2), a spiral blade (62) is fixedly mounted on one end of the liquid guide pipe (61) extending into the liquid outlet pipe (2), and a plurality of punching holes (601) are provided on the liquid guide pipe (61) at the gap between the spiral blade (62). A motor (63) for driving the liquid guide pipe (61) to rotate is mounted on one end of the liquid outlet pipe (2), and a water pump (7) is also fixedly mounted on the liquid outlet pipe (2), and the liquid outlet end of the water pump (7) is connected to an adapter ring (71) docking with the liquid guide pipe (61).

2. The oilfield water injection profile control agent injection device according to claim 1, characterized in that: The mixing assembly (4) comprises a dispersion plate (41) fixedly mounted on the liquid inlet pipe (3); the liquid inlet pipe (3) is provided with a plurality of liquid guide holes (301) evenly spaced above the dispersion plate (41); a plurality of stirring rods (42) are mounted on the liquid inlet pipe (3) below the dispersion plate (41); and a plurality of the stirring rods (42) are fixedly sleeved with grid plates (43).

3. The oilfield water injection profile control agent injection device according to claim 2, characterized in that: The dispersion disk (41) is conical, and a plurality of corrugated strips (411) are evenly mounted on the conical surface of the dispersion disk (41).

4. The oilfield water injection profile control agent injection device according to claim 2, characterized in that: A plurality of scraping rods (44) are mounted on the liquid inlet pipe (3), and the outer side walls of the scraping rods (44) are in sliding engagement with the inner side walls of the mixing box (1).

5. The oilfield water injection profile control agent injection device according to claim 1, characterized in that: A second motor (5) for driving the liquid inlet pipe (3) to rotate is installed at the top of the mixing box (1).

6. The oilfield water injection profile control agent injection device according to claim 1, characterized in that: A conveying screw (31) is installed at the bottom end of the liquid inlet pipe (3).

7. The oilfield water injection profile control agent injection device according to claim 1, characterized in that: The bottom end of one side of the liquid outlet pipe (2) is connected to a transfer pipe (21), and the transfer pipe (21) is provided with a connecting flange.

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