Shaft composite viscosity reducer preparation device and viscosity reducer imbedding method thereof

Abstract

The invention belongs to the technical field of viscosity reducer preparation, and provides a shaft composite viscosity reducer preparation device and a viscosity reducer imbedding method.The shaft composite viscosity reducer preparation device comprises a reaction kettle, a stirring device is arranged in the reaction kettle, a material storage mechanism is installed at the top of the reaction kettle, and a feeding mechanism is arranged at the bottom of the material storage mechanism; when a connecting rod slides to the end of a third rail, the fan-shaped end of the connecting rod slides in an arc-shaped block, time is provided for falling of raw materials, a push block plays a role in limiting a sealing opening, and when the other end of the connecting rod slides into the other third rail again and pushes a second rotary disc to rotate again, the push block is made to be away from the sealing opening; at the moment, the spring pulls back the sealing opening, so that the sealing opening blocks the round hole in the fixed disc again, and the raw materials cannot fall off; in the falling process of the raw materials, the rotating shaft always drives the stirring paddle to rotate to stir the raw materials in the reaction kettle, so that the raw materials are uniformly dispersed, and non-uniform local concentration is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of viscosity reducer preparation, in particular to a wellbore composite viscosity reducer preparation device and a viscosity reducer placement method thereof. Background Art

[0002] Heavy oil (also called heavy oil) is an important component of petroleum hydrocarbon energy, with a huge potential several times higher than conventional crude oil resources. my country's heavy oil (high-viscosity heavy oil, viscosity above 0.1Pa·s) resources are widely distributed, with geological reserves of 1640Mt, accounting for one-third of the total oil reserves, of which land heavy oil accounts for more than 20% of the total oil resources. The prominent feature of heavy oil is that it contains high levels of asphaltene and colloid. The output of heavy oil with high content of colloid and asphaltene accounts for about 7% of the total crude oil output; the commonly used methods for reducing the viscosity of heavy oil (including extra-heavy oil and super-heavy oil) (including mixing with thin oil to reduce viscosity, heating to reduce viscosity, heavy oil modification to reduce viscosity, emulsification to reduce viscosity) are as follows: The viscosity reduction principle and its advantages and disadvantages of various oils (such as oil shortage and price difference between heavy oil and thin oil) are different. The viscosity reduction by adding thin oil has disadvantages such as oil shortage and price difference between heavy oil and thin oil. Heating viscosity reduction consumes a lot of heat energy, resulting in high energy loss and economic loss. Modification viscosity reduction requires more stringent reaction conditions and has a narrow scope of application. Emulsification viscosity reduction has a relatively wide scope of application (including oil layer exploitation, wellbore viscosity reduction, pipeline transportation and other fields), and the process is simple, the cost is low and it is easy to implement. However, different emulsification viscosity reducers need to be used for different heavy oil layers. In the production process, raw materials are mostly added manually, resulting in inaccurate addition of materials, which affects product quality and performance stability.

[0003] In summary, the present invention provides a wellbore composite viscosity reducer preparation device and a viscosity reducer placement method thereof to solve the above-mentioned problems. Summary of the invention

[0004] The present invention provides a wellbore composite viscosity reducing agent preparation device and a viscosity reducing agent placement method thereof, so as to solve the problems raised in the background technology.

[0005] The technical solution of the present invention is as follows:

[0006] A preparation device for a composite viscosity reducer for a wellbore comprises a reaction kettle, wherein a stirring device is arranged inside the reaction kettle, a material storage mechanism is installed on the top of the reaction kettle, and a feeding mechanism is arranged at the bottom of the material storage mechanism.

[0007] Furthermore, the stirring device includes a motor, a rotating rod and a first rotating disk, the motor is arranged at the top of the reactor, the output end of the motor is fixedly connected to the rotating rod, the first rotating disk is fixedly connected to the rotating rod and is located in the reactor, a fixed disk is arranged on the side of the first rotating disk away from the motor, a plurality of stirring paddles are fixedly connected to the rotating rod, and the stirring paddles are located at the bottom of the fixed disk.

[0008] Furthermore, a circular hole is provided on the fixed disk, and a first track is fixedly connected to a side of the fixed disk away from the first turntable. A seal is slidably connected to the first track and is located at the circular hole on the fixed disk. A spring is fixedly connected to one side of the seal, and a fixed block is fixedly connected to an end of the spring away from the seal.

[0009] Furthermore, the material storage mechanism includes an outer shell, a storage box and a telescopic slider, the outer shell is fixedly connected to the top of the reactor, the storage box is slidably connected inside the outer shell, the telescopic slider is slidably connected to the inner wall of the storage box, a second track is fixedly connected to the outer wall of the storage box, a magnetic block is slidably connected to the second track, an electromagnetic block is connected between the first turntable and the fixed disk, the electromagnetic block is fixedly connected to the bottom of the outer shell, and the electromagnetic block is slidably connected to the fixed disk.

[0010] Furthermore, the extended parts on both sides of the telescopic slider are arranged in a staggered manner, so as to fully utilize the retractable space in the middle of the telescopic slider.

[0011] Furthermore, the feeding mechanism includes gear 1, gear 2 and a connecting rod, the gear 1 is fixedly connected to the rotating rod and located on one side of the fixed disk, the gear 2 is slidably connected to one side of the gear 1, the bottom of the gear 2 is fixedly connected to a connecting rod, the rotating rod is located at the bottom of the gear 1 and is fixedly connected to a second turntable, the second turntable is slidably connected to the rotating rod and the inner wall of the reactor, the second turntable is fixedly connected to a third track, the third track is fixedly connected to the second turntable, and there are three third tracks in total to divide the second turntable into three parts, an arc block is arranged between each of the third tracks, the arc block is fixedly connected to the second turntable, a push block is fixedly connected to one side of the third track, and the end of the push block away from the second turntable is slidably connected to the seal.

[0012] Furthermore, one end of the connecting rod is fan-shaped, and the other end of the connecting rod is slidably connected to the third track, so that the second turntable rotates intermittently.

[0013] A method for placing a composite viscosity reducing agent in a wellbore comprises the following steps:

[0014] S1. Put the pipe string into the wellbore first;

[0015] S2, the viscosity reducer is injected before the plugging agent;

[0016] S3. Mix the viscosity reducer and water in a ratio of 1:50 to form an aqueous solution, and add it into the annular space of the oil well. The amount added is based on the design amount for the well conditions.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention energizes the electromagnetic block and the magnetic block through a controller. Since magnets are provided on both retractable sides of the telescopic slider, the magnetic force of the magnetic block attracts the magnet to approach the magnetic block and makes the telescopic slider stretch and completely fit with the inner wall of the storage box, so that the storage box is in a closed state. At the same time, the magnetic force of the electromagnetic block repels the magnetic force of the magnet, so that the electromagnetic block pushes the magnet to move away from the electromagnetic block and drives the storage box away from the electromagnetic block, thereby reducing the time for staff to replace raw materials and clean the storage box.

[0019] 2. When the connecting rod slides to the end of the third track through the present invention, the fan-shaped end of the connecting rod slides in the arc block to provide time for the raw materials to fall, and the push block plays a limiting role on the seal. When the other end of the connecting rod slides into another third track again and pushes the second turntable to rotate again to make the push block away from the seal, the spring pulls the seal back at this time, so that the seal blocks the round hole on the fixed disk again, thereby preventing the raw materials from falling. During the process of the raw materials falling, the rotating shaft has been driving the stirring paddle to rotate, stirring the raw materials in the reactor, so that the raw materials are evenly dispersed to avoid local uneven concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a stereogram of the device of the present invention;

[0021] Figure 2 It is the internal structure diagram of the device of the present invention;

[0022] Figure 3 is a cross-sectional view of the device of the present invention;

[0023] Figure 4 It is a structural diagram of the material storage mechanism of the present invention;

[0024] Figure 5 It is a partial structural diagram of the material storage mechanism of the present invention;

[0025] Figure 6 It is the structural diagram of the feeding mechanism of the present invention;

[0026] Figure 7 It is a partial structural diagram of the feeding mechanism of the present invention;

[0027] Figure 8 The present invention Figure 6 Enlarged view of point A in the middle.

[0028] In the figure:

[0029] 1. Reactor; 2. Stirring device; 21. Motor; 22. Rotating rod; 23. First turntable; 24. Fixed disk; 241. First track; 242. Seal; 243. Spring; 244. Fixed block; 25. Stirring paddle; 3. Material storage mechanism; 31. Housing; 32. Storage box; 33. Telescopic slider; 34. Second track; 35. Magnetic block; 36. Electromagnetic block; 4. Feeding mechanism; 41. Gear 1; 42. Gear 2; 43. Connecting rod; 44. Second turntable; 45. Third track; 46. Arc block; 47. Push block. DETAILED DESCRIPTION

[0030] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] like Figure 1-8 As shown, the present invention provides a preparation device for a composite viscosity reducer for a wellbore, comprising: a reactor 1, wherein a stirring device 2 is arranged inside the reactor 1, a material storage mechanism 3 is installed on the top of the reactor 1, and a feeding mechanism 4 is arranged at the bottom of the material storage mechanism 3.

[0032] As an embodiment of the present invention, the stirring device 2 includes a motor 21, a rotating rod 22 and a first rotating disk 23. The motor 21 is arranged at the top of the reactor 1, and the output end of the motor 21 is fixedly connected to the rotating rod 22. The first rotating disk 23 is fixedly connected to the rotating rod 22 and is located in the reactor 1. A fixed disk 24 is arranged on the side of the first rotating disk 23 away from the motor 21. A plurality of stirring paddles 25 are fixedly connected to the rotating rod 22, and the stirring paddles 25 are located at the bottom of the fixed disk 24.

[0033] As an embodiment of the present invention, a round hole is opened on the fixed disk 24, and a first track 241 is fixedly connected to a side of the fixed disk 24 away from the first turntable 23, a seal 242 is slidably connected to the first track 241 and is located at the round hole on the fixed disk 24, a spring 243 is fixedly connected to one side of the seal 242, and a fixed block 244 is fixedly connected to the end of the spring 243 away from the seal 242.

[0034] As an embodiment of the present invention, the material storage mechanism 3 includes an outer shell 31, a storage box 32 and a telescopic slider 33, the outer shell 31 is fixedly connected to the top of the reactor 1, the storage box 32 is slidably connected in the outer shell 31, the telescopic slider 33 is slidably connected to the inner wall of the storage box 32, a second track 34 is fixedly connected to the outer wall of the storage box 32, a magnetic block 35 is slidably connected to the second track 34, an electromagnetic block 36 is connected between the first turntable 23 and the fixed disk 24, the electromagnetic block 36 is fixedly connected to the bottom of the outer shell 31, and the electromagnetic block 36 is slidably connected to the fixed disk 24.

[0035] As an implementation mode of the present invention, the extended parts on both sides of the telescopic slider 33 are arranged in a staggered manner, so as to fully utilize the retractable space in the middle of the telescopic slider.

[0036] As an embodiment of the present invention, the feeding mechanism 4 includes a gear 1 41, a gear 2 42 and a connecting rod 43, the gear 1 41 is fixedly connected to the rotating rod 22 and is located on one side of the fixed disk 24, the gear 2 42 is slidably connected to one side of the gear 1 41, the bottom of the gear 2 42 is fixedly connected with a connecting rod 43, the rotating rod 22 is fixedly connected with a second rotating disk 44 at the bottom of the gear 1 41, the second rotating disk 44 is slidably connected to the rotating rod 22 and the inner wall of the reactor 1, the second rotating disk 44 is fixedly connected with a third track 45, the third track 45 is fixedly connected to the second rotating disk 44, and a total of three third tracks 45 are provided to divide the second rotating disk 44 into three parts, an arc block 46 is provided between each of the third tracks 45, the arc block 46 is fixedly connected to the second rotating disk 44, a push block 47 is fixedly connected to one side of the third track 45, and the end of the push block 47 away from the second rotating disk 44 is slidably connected to the seal 242.

[0037] As an embodiment of the present invention, one end of the connecting rod 43 is fan-shaped, and the other end of the connecting rod 43 is slidably connected to the third track 45, so that the second turntable 44 rotates intermittently to provide time for the raw materials to fall.

[0038] A method for placing a composite viscosity reducing agent in a wellbore comprises the following steps:

[0039] S1. Put the pipe string into the wellbore first;

[0040] S2, the viscosity reducer is injected before the plugging agent;

[0041] S3. Mix the viscosity reducer and water in a ratio of 1:50 to form an aqueous solution, and add it into the annular space of the oil well. The amount added is based on the design amount for the well conditions.

[0042] Specific working principle:

[0043] First, if Figure 1-3 As shown, the staff puts the viscosity reducer raw materials into different storage boxes 32 according to the needs. Each storage box 32 is hollow and has a length equal to the distance between the first rotating disk 23 and the fixed disk 24. When the staff fills up a storage box 32, the staff puts the retracted telescopic slider 33 into the storage box 32 so that both sides of the storage box 32 are in an open state, which is convenient for the staff to put in the raw materials multiple times. The telescopic slider 33 slides down along the inner wall of the storage box 32 to the top of the raw materials and slides down synchronously with the reduction of the raw materials. When the raw materials in a storage box 32 are no longer needed, the staff will put in the retracted slider 33. When other raw materials are used or need to be replaced, the staff energizes the electromagnetic block and the magnetic block 35 through the controller. Since magnets are provided on both sides of the telescopic slider 33, the magnetic force of the magnetic block 35 attracts the magnet to approach the magnetic block 35 and makes the telescopic slider 33 extend and completely fit with the inner wall of the storage box 32, so that the storage box 32 is in a closed state. At the same time, the magnetic force of the electromagnetic block repels the magnetic force of the magnet, so that the electromagnetic block pushes the magnet to move away from the electromagnetic block, and drives the storage box 32 away from the electromagnetic block, thereby reducing the time for the staff to replace raw materials and clean the storage box 32.

[0044] Then, if Figure 4-8 As shown, the staff starts the motor 21, drives the rotating rod 22 to rotate, and drives the first rotating disk 23, the gear 1 41 and the stirring paddle 25 to rotate accordingly. The rotation of the gear 1 41 drives the gear 2 42 to rotate, and drives the connecting rod 43 to rotate. One end of the connecting rod 43 slides in the third track 45, thereby driving the second rotating disk 44 to rotate. At this time, the pushing block 47 pushes the sealing 242, so that the sealing 242 moves away from the round hole on the fixed disk 24 along the trajectory of the first track 241, and stretches the spring 243, so that the raw material falls from the storage box 32 into the reactor 1. At the same time, when the connecting rod 43 slides to the end of the third track 45, the fan-shaped end of the connecting rod 43 slides in the arc block 46. At this time, the connecting rod 43 cannot push the second turntable 44 to rotate, providing time for the raw materials to fall, and the push block 47 plays a limiting role on the seal 242. When the fan-shaped end of the connecting rod 43 turns away from the arc block 46, the other end of the connecting rod 43 slides into another third track 45 again, and pushes the second turntable 44 to rotate again to make the push block 47 away from the seal 242. At this time, the spring 243 pulls the seal 242 back, so that the seal 242 blocks the round hole on the fixed disk 24 again, thereby preventing the raw materials from falling. During the process of the raw materials falling, the rotating shaft has been driving the stirring paddle 25 to rotate, stirring the raw materials in the reactor 1, so that the raw materials are evenly dispersed to avoid local uneven concentration.

[0045] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A preparation device for a wellbore composite viscosity reducing agent, comprising: A reaction kettle (1) is characterized in that: a stirring device (2) is arranged inside the reaction kettle (1), a material storage mechanism (3) is installed on the top of the reaction kettle (1), and a feeding mechanism (4) is arranged at the bottom of the material storage mechanism (3).

2. A wellbore composite viscosity reducing agent preparation device as claimed in claim 1, characterized in that: The stirring device (2) comprises a motor (21), a rotating rod (22) and a first rotating disk (23); the motor (21) is arranged on the top of the reaction kettle (1); the output end of the motor (21) is fixedly connected to the rotating rod (22); the first rotating disk (23) is fixedly connected to the rotating rod (22) and is located in the reaction kettle (1); a fixed disk (24) is arranged on a side of the first rotating disk (23) away from the motor (21); a plurality of stirring paddles (25) are fixedly connected to the rotating rod (22), and the stirring paddles (25) are located at the bottom of the fixed disk (24).

3. A wellbore composite viscosity reducing agent preparation device as claimed in claim 2, characterized in that: The fixed disk (24) is provided with a circular hole. A first track (241) is fixedly connected to a side of the fixed disk (24) away from the first rotating disk (23). A seal (242) is slidably connected to the first track (241) and is located at the circular hole on the fixed disk (24). A spring (243) is fixedly connected to one side of the seal (242). An end of the spring (243) away from the seal (242) is fixedly connected to a fixing block (244).

4. A preparation device for a composite viscosity reducing agent for a wellbore as claimed in claim 2, characterized in that: The material storage mechanism (3) comprises a shell (31), a storage box (32) and a telescopic slider (33); the shell (31) is fixedly connected to the top of the reaction kettle (1); the storage box (32) is slidably connected inside the shell (31); the telescopic slider (33) is slidably connected to the inner wall of the storage box (32); a second track (34) is fixedly connected to the outer wall of the storage box (32); a magnetic block (35) is slidably connected to the second track (34); an electromagnetic block (36) is connected between the first rotating disk (23) and the fixed disk (24); the electromagnetic block (36) is fixedly connected to the bottom of the shell (31); and the electromagnetic block (36) is slidably connected to the fixed disk (24).

5. A preparation device for a composite viscosity reducing agent for a wellbore as claimed in claim 4, characterized in that: The extended parts on both sides of the telescopic slider (33) are arranged alternately.

6. A preparation device for a composite viscosity reducing agent for a wellbore as claimed in claim 3, characterized in that: The feeding mechanism (4) comprises a gear 1 (41), a gear 2 (42) and a connecting rod (43); the gear 1 (41) is fixedly connected to the rotating rod (22) and is located on one side of the fixed disk (24); the gear 2 (42) is slidably connected to one side of the gear 1 (41); the bottom of the gear 2 (42) is fixedly connected to a connecting rod (43); a second rotating disk (44) is fixedly connected to the rotating rod (22) and located at the bottom of the gear 1 (41); the second rotating disk (44) is slidably connected to the rotating rod (22) and the inner wall of the reaction kettle (1); A third track (45) is fixedly connected to the second turntable (44), and the third track (45) is fixedly connected to the second turntable (44). A total of three third tracks (45) are provided to divide the second turntable (44) into three parts. An arc block (46) is provided between each of the third tracks (45). The arc block (46) is fixedly connected to the second turntable (44). A push block (47) is fixedly connected to one side of the third track (45), and an end of the push block (47) away from the second turntable (44) is slidably connected to the seal (242).

7. A preparation device for a composite viscosity reducing agent for a wellbore as claimed in claim 6, characterized in that: One end of the connecting rod (43) is fan-shaped, and the other end of the connecting rod (43) is slidably connected in the third track (45).

8. A method for placing a composite viscosity reducer in a wellbore, applicable to a composite viscosity reducer preparation device for a wellbore according to any one of claims 1 to 7, characterized in that: The steps include: S1. Put the pipe string into the wellbore first; S2, the viscosity reducer is injected before the plugging agent; S3. Mix the viscosity reducer and water in a ratio of 1:50 to form an aqueous solution, and add it into the annular space of the oil well. The amount added is based on the design amount for the well conditions.

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