Automatic efficient mixing device and method for temporary plugging fiber and proppant

Abstract

The invention discloses an automatic efficient mixing device and method for temporary plugging fibers and a proppant, and relates to the technical field of uniform mixing of the temporary plugging fibers and the proppant, and the automatic efficient mixing device comprises a reciprocating driving assembly, a vertical plate and a driving motor which are fixedly arranged on a table top of a platform and are sequentially arranged from left to right, a tank body with an opening in the top is fixedly arranged at the top of the main shaft; a large push rod is fixedly arranged on the L-shaped plate, the large push rod downwards extends into the tank body and is located on the left side of the floating plate, and the supporting wheel always abuts against the bottom wall of the tank body under the action of the elastic force of the spring; a connecting rod is hinged to the right side wall of the large push rod through a hinge base B. The other end of the connecting rod is hinged to the floating plate. A transmission assembly used for driving the rotating shaft to rotate is installed between the spindle and the rotating shaft of the reciprocating driving assembly. The temporary plugging fiber and proppant mixing device has the beneficial effects that the temporary plugging fiber and the proppant are uniformly mixed in a short time, and the mixing efficiency of the temporary plugging fiber and the proppant is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of uniform mixing of temporary plugging fibers and proppants, in particular to an automatic and efficient mixing device and method for temporary plugging fibers and proppants. Background Art

[0002] During the drilling process, plugging agents need to be added to the well to seal the cracks in the well to ensure the smooth exploitation of shale gas. A plugging agent is made by evenly mixing temporary plugging fibers and proppants. The proppant serves as a matrix, and the temporary plugging fibers serve to bridge and connect the proppant in series, thereby improving the plugging effect of the plugging agent in plugging cracks, thereby increasing the production of shale gas.

[0003] A certain drilling area uses a mixing device to evenly mix temporary plugging fibers and proppants to produce plugging agents. The mixing device includes a tank body, a motor fixed on the top of the tank body, and a mixing shaft extending into the tank body is connected to the output shaft of the motor. The mixing shaft is equipped with multiple blades, and a filling port is opened on the top of the tank body. The method of evenly mixing temporary plugging fibers and proppants using the mixing device is: S1. The worker puts a certain amount of temporary plugging fiber into the tank through the filling port; then puts a certain amount of proppant into the tank through the filling port; S2. The worker turns on the motor, the motor drives the stirring shaft to rotate, the stirring shaft drives the blades to rotate, the blades stir the temporary plugging agent and the proppant in the tank, after stirring for a period of time, the temporary plugging fiber and the proppant can be evenly mixed, and then the first batch of plugging agent is produced; S3. Open the stop valve at the bottom of the tank to discharge the plugging agent into the designated storage tank; S4. The worker repeats steps S1 to S3 for multiple times to produce multiple batches of plugging agent.

[0004] However, although this stirring device can be used, it still has the following technical defects in actual operation: In step S2, the blades can only stir the temporary plugging fibers and the proppant in a single direction on the water surface, so it takes a long time to evenly mix the temporary plugging fibers and the proppant, thereby reducing the mixing efficiency of the temporary plugging fibers and the proppant, and further reducing the production efficiency of the plugging agent.

[0005] Therefore, there is an urgent need for a mixing device and method that can achieve uniform mixing of temporary plugging fibers and proppants in a short time and greatly improve the mixing efficiency of temporary plugging fibers and proppants. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide an automated and efficient mixing device and method for temporary plugging fibers and proppants, which can achieve uniform mixing of temporary plugging fibers and proppants in a short time and greatly improve the mixing efficiency of temporary plugging fibers and proppants.

[0007] The object of the present invention is achieved through the following technical solutions: an automated and efficient mixing device for temporary plugging fiber and proppant, which comprises a reciprocating drive assembly, a vertical plate and a driving motor fixedly mounted on the table top of the platform and arranged sequentially from left to right, a main shaft fixedly mounted on the output shaft of the driving motor, a tank body with an opening on the top of the main shaft fixedly mounted on the top; a through groove is provided in the lower end of the vertical plate, a bracket extending rightwards just above the opening of the tank body fixedly mounted on the top of the vertical plate, a floating plate is hingedly connected to the left wall of the bracket via a hinge seat A, the floating plate tilts leftwards and extends downwards into the tank body, a movable rod located just below the bracket is slidably mounted in the upper end of the vertical plate, an L plate is fixedly mounted on the right end of the movable rod; A large push rod is fixedly arranged on the L plate, and the large push rod extends downward into the tank body and is located on the left side of the floating plate. A blind groove arranged along its axial direction is opened on the bottom surface of the large push rod, and a small push rod is slidably installed in the blind groove. A support wheel is rotatably installed at the bottom of the small push rod. A spring is arranged in the blind groove, and the top end of the spring is fixedly arranged at the bottom of the blind groove. The bottom end of the spring is fixedly arranged at the top end of the small push rod. Under the elastic force of the spring, the support wheel always rests against the bottom wall of the tank body; a connecting rod is hinged on the right side wall of the large push rod via a hinge seat B, and the other end of the connecting rod is hinged on the floating plate; The reciprocating drive assembly includes a rotating shaft rotatably mounted on a platform, a disc fixed to the top of the rotating shaft, a pin A fixed to the left end of the disc, a connecting plate hinged to the pin A, and a right end of the connecting plate hinged to the left end of the movable rod via the pin B; a transmission assembly for driving the rotating shaft to rotate is installed between the main shaft and the rotating shaft of the reciprocating drive assembly.

[0008] A stop valve connected to the tank body is arranged at the bottom, and the other end of the stop valve is connected to a drain pipe.

[0009] The tank body, the main shaft and the output shaft of the driving motor are coaxially arranged.

[0010] The vertical plate is fixedly provided with a guide hole corresponding to the movable rod, and the movable rod slides through the guide hole.

[0011] A bearing seat is fixedly arranged on the table top of the platform, and the lower end of the rotating shaft is rotatably installed in the bearing seat.

[0012] The transmission assembly comprises a driving pulley fixed on the main shaft and a driven pulley fixed on the rotating shaft, and a belt passing through a through groove of the vertical plate is installed between the driving pulley and the driven pulley.

[0013] The pin shaft A and the pin shaft B are both arranged vertically.

[0014] The high-efficiency mixing device also includes a controller, which is electrically connected to the driving motor via a signal line.

[0015] An automated and efficient mixing method for temporary plugging fibers and proppants, comprising the following steps: S1. A worker puts a certain amount of temporary plugging fiber into the tank from the top opening; and then puts a certain amount of proppant into the tank from the top opening; S2, control the drive motor to start, the output shaft of the drive motor drives the main shaft to rotate, the main shaft drives the tank body to rotate synchronously around the axis of the main shaft, and the tank body drives the temporary plugging fiber and proppant put into it to perform centrifugal movement; At the same time, the main shaft also drives the active pulley of the transmission component to rotate, the active pulley drives the driven pulley to rotate through the belt, the driven pulley drives the rotating shaft of the reciprocating drive component to rotate around its own axis, the rotating shaft drives the disc to rotate, the disc drives the pin A on it to rotate synchronously, the pin A drives the connecting plate to do left and right reciprocating motion, the connecting plate drives the movable rod to do left and right reciprocating linear motion through the pin B, the movable rod drives the L plate to do reciprocating linear motion, the L plate drives the large push rod to do left and right reciprocating linear motion, the large push rod drives the small push rod to do left and right reciprocating linear motion; When the large push rod and the small push rod are in the process of reciprocating linear motion left and right, the large push rod and the small push rod continuously push the temporary plugging fiber and the proppant that are doing centrifugal motion back and forth in the horizontal direction; at the same time, the large push rod also drives the connecting rod to do reciprocating motion left and right, and the connecting rod drives the floating plate to do reciprocating up and down flipping around the center of the hinge seat A. When the floating plate is flipping up and down, the floating plate continuously flips the temporary plugging fiber and the proppant that are doing centrifugal motion up and down in the vertical direction. Under the linkage action of the floating plate, the large push rod and the small push rod, the temporary plugging fiber and the proppant that are doing centrifugal motion are mixed; when the driving motor works for a period of time, the temporary plugging fiber and the proppant can be finally evenly mixed, so as to produce the first batch of plugging agent; S3, turn off the drive motor, and then the worker places a storage tank on the platform, ensuring that the storage tank is directly below the stop valve, and then opens the stop valve, and the plugging agent in the tank is discharged into the storage tank through the stop valve and the drain pipe; S4. The worker repeats steps S1 to S3 for multiple times to produce multiple batches of plugging agents.

[0016] The present invention has the following advantages: the temporary plugging fibers and the proppant can be uniformly mixed in a short time, and the mixing efficiency of the temporary plugging fibers and the proppant can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 The structural schematic diagram without the tank body; Figure 3 It is a front view of the present invention; Figure 4 for Figure 3 The main cross-sectional diagram of Figure 5 It is a connection diagram of the driving motor, the main shaft and the tank body; Figure 6 for Figure 5 The main cross-sectional diagram of Figure 7 It is a schematic diagram of the structure of the reciprocating drive assembly; Figure 8 for Figure 7 The main cross-sectional diagram of Fig. 9 It is a schematic diagram of the connection between the large push rod, the L plate and the small push rod; Fig.10 for Fig. 9 The main cross-sectional diagram of Fig.11 It is a schematic diagram of the connection between the rotating shaft, the main shaft, the disc and the transmission assembly; Fig.12 for Fig.11 The main view of Fig.13 It is a working schematic diagram of the present invention; In the figure: 1- platform, 2- reciprocating drive assembly, 3- vertical plate, 4- driving motor, 5- main shaft, 6- tank body, 7- through slot, 8- bracket, 9- hinge seat A, 10- floating plate, 11- movable rod, 12- L plate, 13- large push rod, 14- blind slot, 15- small push rod, 16- supporting wheel, 17- spring, 18- hinge seat B, 19- connecting rod; 20-rotating shaft, 21-disc, 22-pin shaft A, 23-connecting plate, 24-pin shaft B, 25-transmission assembly, 26-stop valve, 27-guide hole, 28-bearing seat; 29-driving pulley, 30-driven pulley, 31-belt. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings, and the protection scope of the present invention is not limited to the following: like Figure 1 to Figure 12As shown, an automated and efficient mixing device for temporary plugging fiber and proppant comprises a reciprocating drive assembly 2, a vertical plate 3 and a driving motor 4 which are fixedly mounted on the table top of a platform 1 and arranged in sequence from left to right, a main shaft 5 is fixedly mounted on the output shaft of the driving motor 4, a tank body 6 with an opening on the top is fixedly mounted on the top of the main shaft 5; a through groove 7 is opened in the lower end portion of the vertical plate 3, a bracket 8 extending rightwards just above the opening of the tank body 6 is fixedly mounted on the top of the vertical plate 3, a floating plate 10 is hingedly connected to the left side wall of the bracket 8 via a hinge seat A9, the floating plate 10 tilts leftwards and extends downwards into the tank body 6, a movable rod 11 located just below the bracket 8 is slidably mounted in the upper end portion of the vertical plate 3, an L-plate 12 is fixedly mounted on the right end portion of the movable rod 11; the tank body 6, the main shaft 5 and the output shaft of the driving motor 4 are coaxially arranged; a stop valve 26 connected thereto is arranged at the bottom of the tank body 6, and a drain pipe is connected to the other end of the stop valve 26.

[0019] A large push rod 13 is fixedly arranged on the L plate 12, and the large push rod 13 extends downward into the tank body 6 and is located on the left side of the floating plate 10. A blind groove 14 is provided on the bottom surface of the large push rod 13 along its axial direction, and a small push rod 15 is slidably installed in the blind groove 14, and a support wheel 16 is rotatably installed at the bottom of the small push rod 15. A spring 17 is arranged in the blind groove 14, and the top end of the spring 17 is fixedly arranged at the bottom of the blind groove 14, and the bottom end of the spring 17 is fixedly arranged at the top end of the small push rod 15. Under the elastic force of the spring 17, the support wheel 16 always rests on the bottom wall of the tank body 6; a connecting rod 19 is hinged on the right side wall of the large push rod 13 through a hinge seat B18, and the other end of the connecting rod 19 is hinged on the floating plate 10; The reciprocating drive assembly 2 includes a rotating shaft 20 rotatably mounted on the platform 1, a disc 21 fixed on the top of the rotating shaft 20, a pin A22 fixed on the left end of the disc 21, a connecting plate 23 hinged on the pin A22, and the right end of the connecting plate 23 is hinged to the left end of the movable rod 11 via a pin B24, and the pin A22 and the pin B24 are both vertically arranged; a transmission assembly 25 for driving the rotating shaft 20 to rotate is installed between the main shaft 5 and the rotating shaft 20 of the reciprocating drive assembly 2, and the transmission assembly 25 includes a driving pulley 29 fixed on the main shaft 5, and a driven pulley 30 fixed on the rotating shaft 20, and a belt 31 passing through the through groove 7 of the vertical plate 3 is installed between the driving pulley 29 and the driven pulley 30.

[0020] The vertical plate 3 is fixedly provided with a guide hole 27 corresponding to the movable rod 11, and the movable rod 11 slides through the guide hole 27. A bearing seat 28 is fixedly provided on the table surface of the platform 1, and the lower end of the rotating shaft 20 is rotatably installed in the bearing seat 28. The high-efficiency mixing device also includes a controller, which is electrically connected to the driving motor 4 via a signal line. The worker can control the start or stop of the driving motor 4 through the controller, which is convenient for the worker's operation.

[0021] An automated and efficient mixing method for temporary plugging fibers and proppants, comprising the following steps: S1. A worker puts a certain amount of temporary plugging fiber into the tank body 6 from the top opening thereof; and then puts a certain amount of proppant into the tank body 6 from the top opening thereof; S2, control the drive motor 4 to start, the output shaft of the drive motor 4 drives the main shaft 5 to rotate, the main shaft 5 drives the tank body 6 to rotate synchronously around the axis of the main shaft 5, and the tank body 6 drives the temporary plugging fiber and the proppant put into it to perform centrifugal motion; At the same time, the main shaft 5 also drives the active pulley 29 of the transmission component 25 to rotate, the active pulley 29 drives the driven pulley 30 to rotate via the belt 31, the driven pulley 30 drives the rotating shaft 20 of the reciprocating drive component 2 to rotate around its own axis, the rotating shaft 20 drives the disc 21 to rotate, the disc 21 drives the pin A22 thereon to rotate synchronously, the pin A22 drives the connecting plate 23 to do left and right reciprocating motion, the connecting plate 23 drives the movable rod 11 to do left and right reciprocating linear motion via the pin B24, the movable rod 11 drives the L plate 12 to do reciprocating linear motion, the L plate 12 drives the large push rod 13 to do left and right reciprocating linear motion, the large push rod 13 drives the small push rod 15 to do left and right reciprocating linear motion; When the large push rod 13 and the small push rod 15 are in the process of reciprocating linear motion, the large push rod 13 and the small push rod 15 continuously push the temporary plugging fiber and the proppant that are doing centrifugal motion back and forth in the horizontal direction. The movement direction of the large push rod 13 and the small push rod 15 is as follows: Fig.13 As shown by the hollow arrow; at the same time, the large push rod 13 also drives the connecting rod 19 to do left and right reciprocating motion, and the connecting rod 19 drives the floating plate 10 to do reciprocating up and down flipping around the center of the hinge seat A9. When the floating plate 10 is flipping up and down, the floating plate 10 is flipped up and down in the vertical direction to perform centrifugal motion of the temporary plugging fiber and the proppant. The flipping direction of the floating plate 10 is as shown in FIG. Fig.13 As shown by the solid arrow in the middle, under the linkage action of the floating plate 10, the large push rod 13 and the small push rod 15, the temporary plugging fibers and the proppant that are doing centrifugal motion are mixed; when the driving motor 4 works for a period of time, the temporary plugging fibers and the proppant can be finally evenly mixed, thereby producing the first batch of plugging agents; Among them, it can be seen from step S2 that it is only necessary to control the drive motor 4 to start, so that the large push rod 13 and the small push rod 15 can be reciprocated in the horizontal direction to continuously push the temporary plugging fibers and proppants that are performing centrifugal motion. At the same time, the floating plate 10 can be reciprocated in the vertical direction to continuously flip up and down the temporary plugging fibers and proppants that are performing centrifugal motion, thereby greatly increasing the contact area between the temporary plugging fibers and the proppants, thereby achieving uniform mixing of the temporary plugging fibers and the proppants in a short time, thereby greatly improving the mixing efficiency of the temporary plugging fibers and the proppants, and then improving the production efficiency of the plugging agent.

[0022] In addition, there is no need for a separate additional power to complete the up and down flipping of the floating plate 10, nor is there a need for another separate additional power to complete the reciprocating push of the large push rod 13 and the small push rod 15. Instead, only one power of the driving motor 4 is needed to enable the floating plate 10, the large push rod 13 and the small push rod 15 to simultaneously participate in the mixing of the temporary plugging fiber and the proppant, thereby greatly saving electricity consumption in the mining area.

[0023] S3, turn off the drive motor 4, and then the worker places a storage tank on the platform 1, ensuring that the storage tank is directly below the stop valve 26, and then opens the stop valve 26, and the plugging agent in the tank body 6 is discharged into the storage tank through the stop valve 26 and the drain pipe; S4. The worker repeats steps S1 to S3 for multiple times to produce multiple batches of plugging agents.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automated and efficient mixing device for temporary plugging fibers and proppants, characterized in that: It comprises a reciprocating drive assembly (2), a vertical plate (3) and a drive motor (4) which are fixedly mounted on the tabletop of a platform (1) and arranged in sequence from left to right. A main shaft (5) is fixedly mounted on the output shaft of the drive motor (4). A tank body (6) with an opening at the top is fixedly mounted on the top of the main shaft (5). A through slot (7) is provided in the lower end of the vertical plate (3). A bracket (8) extending rightwards to the top of the tank body (6) is fixedly mounted on the top of the vertical plate (3). A floating plate (10) is hingedly connected to the left side wall of the bracket (8) via a hinge seat A (9). The floating plate (10) extends downwardly to the left and tilts to extend into the tank body (6). A movable rod (11) located directly below the bracket (8) is slidably mounted in the upper end of the vertical plate (3). An L plate (12) is fixedly mounted on the right end of the movable rod (11). A large push rod (13) is fixedly provided on the L plate (12), and the large push rod (13) extends downward into the tank body (6) and is located on the left side of the floating plate (10). A blind groove (14) is provided on the bottom surface of the large push rod (13) along its axial direction, and a small push rod (15) is slidably installed in the blind groove (14). A support wheel (16) is rotatably installed at the bottom of the small push rod (15). A spring (17) is provided in the blind groove (14), and the top end of the spring (17) is fixedly provided at the bottom of the blind groove (14). The bottom end of the spring (17) is fixedly provided at the top end of the small push rod (15). Under the elastic force of the spring (17), the support wheel (16) always abuts against the bottom wall of the tank body (6); a connecting rod (19) is hingedly connected to the right side wall of the large push rod (13) via a hinge seat B (18), and the other end of the connecting rod (19) is hingedly connected to the floating plate (10); The reciprocating drive assembly (2) comprises a rotating shaft (20) rotatably mounted on the platform (1), a disc (21) fixedly mounted on the top of the rotating shaft (20), a pin shaft A (22) fixedly mounted on the left end of the disc (21), a connecting plate (23) hingedly connected to the pin shaft A (22), and a right end of the connecting plate (23) hingedly connected to the left end of the movable rod (11) via a pin shaft B (24); a transmission assembly (25) for driving the rotating shaft (20) to rotate is installed between the main shaft (5) and the rotating shaft (20) of the reciprocating drive assembly (2).

2. The automatic and efficient mixing device for temporary plugging fibers and proppants according to claim 1 is characterized in that: The bottom of the tank body (6) is provided with a stop valve (26) in communication therewith, and the other end of the stop valve (26) is connected to a liquid discharge pipe.

3. The automatic and efficient mixing device for temporary plugging fibers and proppants according to claim 2 is characterized in that: The tank body (6), the main shaft (5) and the output shaft of the driving motor (4) are coaxially arranged.

4. The automatic and efficient mixing device for temporary plugging fibers and proppants according to claim 3 is characterized in that: A guide hole (27) corresponding to the movable rod (11) is fixedly provided on the vertical plate (3), and the movable rod (11) is slidably disposed through the guide hole (27).

5. The automatic and efficient mixing device for temporary plugging fibers and proppants according to claim 4 is characterized in that: A bearing seat (28) is fixedly provided on the table surface of the platform (1), and the lower end of the rotating shaft (20) is rotatably mounted in the bearing seat (28).

6. The automatic and efficient mixing device for temporary plugging fibers and proppants according to claim 5, characterized in that: The transmission assembly (25) comprises a driving pulley (29) fixedly mounted on the main shaft (5) and a driven pulley (30) fixedly mounted on the rotating shaft (20). A belt (31) passing through a through groove (7) of the vertical plate (3) is installed between the driving pulley (29) and the driven pulley (30).

7. The automatic and efficient mixing device for temporary plugging fibers and proppants according to claim 6, characterized in that: The pin shaft A (22) and the pin shaft B (24) are both arranged vertically.

8. The automatic and efficient mixing device for temporary plugging fibers and proppants according to claim 7, characterized in that: The high-efficiency mixing device also includes a controller, which is electrically connected to the drive motor (4) via a signal line.

9. An automated and efficient mixing method for temporary plugging fibers and proppants, using the automated and efficient mixing device for temporary plugging fibers and proppants as claimed in claim 8, characterized in that: It includes the following steps: S1. A worker puts a certain amount of temporary plugging fiber into the tank body (6) from the top opening thereof; and then puts a certain amount of proppant into the tank body (6) from the top opening thereof; S2, controlling the drive motor (4) to start, the output shaft of the drive motor (4) drives the main shaft (5) to rotate, the main shaft (5) drives the tank body (6) to rotate synchronously around the axis of the main shaft (5), and the tank body (6) drives the temporary plugging fibers and proppant placed therein to perform centrifugal movement; At the same time, the main shaft (5) also drives the driving pulley (29) of the transmission component (25) to rotate, the driving pulley (29) drives the driven pulley (30) to rotate via the belt (31), the driven pulley (30) drives the rotating shaft (20) of the reciprocating drive component (2) to rotate around its own axis, the rotating shaft (20) drives the disc (21) to rotate, the disc (21) drives the pin A (22) thereon to rotate synchronously, the pin A (22) drives the connecting plate (23) to make a left-right reciprocating motion, the connecting plate (23) drives the movable rod (11) to make a left-right reciprocating linear motion via the pin shaft B (24), the movable rod (11) drives the L plate (12) to make a reciprocating linear motion, the L plate (12) drives the large push rod (13) to make a left-right reciprocating linear motion, the large push rod (13) drives the small push rod (15) to make a left-right reciprocating linear motion; When the large push rod (13) and the small push rod (15) are in the process of reciprocating linear motion, the large push rod (13) and the small push rod (15) continuously push the temporary plugging fibers and the proppant that are in the process of centrifugal motion in a reciprocating manner in the horizontal direction; at the same time, the large push rod (13) also drives the connecting rod (19) to reciprocate in the left and right directions, and the connecting rod (19) drives the floating plate (10) to reciprocate up and down around the center of the hinge seat A (9); when the floating plate (10) is in the process of flipping up and down, the floating plate (10) continuously flips the temporary plugging fibers and the proppant that are in the process of centrifugal motion in a reciprocating manner in the vertical direction; under the linkage action of the floating plate (10), the large push rod (13) and the small push rod (15), the temporary plugging fibers and the proppant that are in the process of centrifugal motion are mixed; when the driving motor (4) works for a period of time, the temporary plugging fibers and the proppant are finally evenly mixed, thereby producing the first batch of plugging agents; S3, the driving motor (4) is turned off, and then the worker places a storage tank on the platform (1), ensuring that the storage tank is directly below the stop valve (26), and then opens the stop valve (26), and the plugging agent in the tank body (6) is discharged into the storage tank through the stop valve (26) and the drain pipe; S4. The worker repeats steps S1 to S3 for multiple times to produce multiple batches of plugging agents.

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