Automatic continuous injection device and injection method for powder profile control agent

Abstract

The invention discloses an automatic continuous injection device and an injection method for a powder profile control agent. The automatic continuous injection device comprises a dosing system, a liquid preparation system, a curing system, a liquid storage system and a wellhead pumping system which are connected in sequence, the drug delivery system delivers drugs to the liquid preparation system; the liquid preparation system is used for mixing chemicals and water to obtain mixed liquid; the curing system is used for curing the mixed liquid; the liquid storage system is used for storing the cured mixed liquid; and the wellhead pumping system is used for feeding the mixed liquid stored in the liquid storage system into a wellhead. The device is easy to operate and high in automation degree, the operation cost and the labor intensity of workers are greatly reduced, and the working environment of on-site constructors is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of oilfield chemistry, and in particular relates to an automatic continuous injection device for a powdered profile control agent, and also relates to an automatic continuous injection method for a powdered profile control agent. Background Art

[0002] At present, powdered profile control agents are basically prepared at the wellhead and injected by profile control pumps. This method has the problems of long injection cycle, difficulty in manual preparation, high labor intensity and operation cost, and inability to achieve automated injection, which greatly limits its large-scale application in oil fields. Summary of the invention

[0003] The first purpose of the present invention is to provide an automated continuous injection device for powder profile control agents to solve the problems of long injection cycle, great difficulty in manual preparation, high labor intensity and operating cost, and inability to achieve automation in the artificial wellhead preparation and profile control pump injection of powder profile control agents.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an automated continuous injection device for powder profile control agent, comprising a dosing system, a liquid preparation system, a maturation system, a liquid storage system and a wellhead pumping system connected in sequence; the dosing system transports the agent to the liquid preparation system; the liquid preparation system is used to mix the agent and water to obtain a mixed liquid; the maturation system is used to mature the mixed liquid; the liquid storage system is used to store the matured mixed liquid; the wellhead pumping system is used to deliver the mixed liquid stored in the liquid storage system to the wellhead.

[0005] As a preferred technical solution of the present invention, the dosing system includes a medicine loader, a feeder, a weighing calculator and an electric vibrating screen; the discharge port of the medicine loader is connected to the feed port of the feeder, the feeder is arranged on the weighing calculator, and the discharge port of the feeder is connected to the feed port of the electric vibrating screen.

[0006] As a preferred technical solution of the present invention, the liquid distribution system includes a water adding pipe, a water adding electric valve, a first flow meter, a first agitator, a liquid distribution tank and a first liquid level meter; the first agitator is arranged in the liquid distribution tank, the first liquid level meter is arranged on the liquid distribution tank, the water adding pipe is connected to the water inlet of the liquid distribution tank, and the first flow meter and the water adding electric valve are connected to the water adding pipe in sequence.

[0007] As a preferred technical solution of the present invention, the maturation system includes a maturation tank, a second agitator, a second liquid level gauge and a first liquid pouring pump; the first liquid pouring pump is connected between the liquid mixing tank and the maturation tank, the second agitator is arranged in the maturation tank, and the second liquid level gauge is arranged on the maturation tank.

[0008] As a preferred technical solution of the present invention, the liquid storage system includes a second liquid pouring pump, a liquid storage tank and a third liquid level gauge; the second liquid pouring pump is connected between the maturation tank and the liquid storage tank, and the third liquid level gauge is arranged on the liquid storage tank.

[0009] As a preferred technical solution of the present invention, the wellhead pumping system includes a regulating pump, a pressure gauge, a return pipe and a second flow meter; the return pipe is connected between the liquid storage tank and the wellhead, the second flow meter is arranged between the return pipe and the wellhead, and the regulating pump and the pressure gauge are arranged between the liquid storage tank and the return pipe.

[0010] The second purpose of the present invention is to provide an automated continuous injection method for powdered profile control agents, so as to solve the problems that powdered profile control agents are basically injected by artificial wellhead liquid preparation and profile control pump injection, which has the advantages of long injection cycle, great difficulty in artificial liquid preparation, high labor intensity and operating cost, and inability to achieve automated injection.

[0011] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is: first determine the concentration of the required agent, and then calculate the required amount of agent and solvent water according to the concentration; open the water adding electric valve to add solvent water in the liquid preparation tank, and when the liquid level in the liquid preparation tank reaches the specified height, the powder feeder automatically and evenly transports the powder agent to the feeder through spiral transmission for weighing and metering, and then evenly sprinkles it into the liquid preparation tank through an electric vibrating screen for stirring and online mixing. After the predetermined amount of agent is added, the agent and solvent water are evenly dispersed in the liquid preparation tank and then enter the maturation tank through the first liquid pouring pump. After maturation is completed, they enter the liquid storage tank through the second liquid pouring pump for storage, and finally are pumped to the wellhead by the profile control pump.

[0012] The beneficial effects of the present invention are: the automatic continuous injection device of the powder profile controlling agent and the injection method of the present invention realize the automatic loading and dosing of the powder profile controlling agent through liquid level monitoring and automatic weighing, and the operation is simple and the degree of automation is high, which greatly reduces the operation cost and the labor intensity of the workers and improves the working environment of the on-site construction personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the automatic continuous injection device of the powder profile control agent of the present invention.

[0014] In the figure: 1. powder feeder, 2. weighing calculator, 3. liquid preparation tank, 4. first liquid pouring pump, 5. second liquid pouring pump, 6. adjusting pump, 7. pressure gauge, 8. second flow meter, 9. reflux tank, 10. liquid storage tank, 11. third liquid level meter, 12. second liquid level meter, 13. second agitator, 14. maturation tank, 15. first liquid level meter, 16. first agitator, 17. electric vibrating screen, 18. water adding pipe, 19. first flow meter, 20. water adding electric valve, 21. feeder. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings, tables and specific embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0016] The present invention is further described below by way of examples, but is not limited to the following embodiments.

[0017] Example 1

[0018] like Figure 1 As shown, the automatic continuous injection device of the powder profile control agent of the present invention comprises a dosing system, a liquid preparation system, a maturation system, a liquid storage system and a wellhead pumping system which are connected in sequence.

[0019] Among them: the drug delivery system is the liquid preparation system to transport the medicine; the liquid preparation system is used to mix the medicine and water to obtain a mixed liquid; the maturation system is used to mature the mixed liquid; the liquid storage system is used to store the matured mixed liquid; the wellhead pumping system is used to deliver the mixed liquid stored in the liquid storage system to the wellhead for use.

[0020] The automatic continuous injection device and injection method of the powder profile controlling agent of the present invention realize automatic loading and dosing of the powder profile controlling agent through liquid level monitoring and automatic weighing. It is simple to operate and has a high degree of automation, which greatly reduces the operation cost and the labor intensity of workers and improves the working environment of on-site construction personnel.

[0021] Example 2

[0022] Different from Example 1, the automatic continuous injection device for powder profile control agent of the present invention defines that the drug delivery system includes a drug loader 1, a feeder 21, a weighing calculator 2 and an electric vibrating screen 17.

[0023] Among them: the discharge port of the medicine feeder 1 is connected with the feed port of the feeder 21, the feeder 21 is arranged on the weighing calculator 2, and the discharge port of the feeder 21 is connected with the feed port of the electric vibrating screen 17. When working, the medicine feeder 1 first feeds the medicine into the feeder 21, and then the feeder 21 is weighed by the weighing calculator 2, and then the quantitative medicine is fed into the electric vibrating screen 17, and the medicine is evenly fed into the liquid preparation system through the electric vibrating screen 17 for the next step of processing.

[0024] Example 3

[0025] like Figure 1 As shown, different from Example 1, in the automatic continuous injection device for powder profile control agent of the present invention, the liquid preparation system is defined to include a water adding pipe 18, a water adding electric valve 20, a first flow meter 19, a first agitator 16, a liquid preparation tank 3 and a first liquid level meter 15.

[0026] Wherein: the first agitator 16 is arranged in the liquid dispensing tank 3, the first liquid level meter 15 is arranged on the liquid dispensing tank 3, the water adding pipe 18 is connected to the water inlet of the liquid dispensing tank 3, and the first flow meter 19 and the water adding electric valve 20 are sequentially connected to the water adding pipe 18. The water adding electric valve 20 is started, and the first flow meter 19 monitors and ensures that a certain amount of water is added to the liquid dispensing tank 3 through the water adding pipe 18, and the water is mixed with the medicine sent into the liquid dispensing tank 3 through the electric vibrating screen 17 and then stirred evenly by the first agitator 16.

[0027] Example 4

[0028] like Figure 1 As shown, different from Example 1, in the automatic continuous injection device for powder profile control agent of the present invention, the aging system is defined to include a aging tank 15, a second agitator 13, a second liquid level meter 12 and a first liquid pouring pump 4.

[0029] The first liquid pouring pump 4 is connected between the liquid dispensing tank 3 and the maturation tank 14, the second agitator 13 is arranged in the maturation tank 14, and the second liquid level meter 12 is arranged on the maturation tank 14. The first liquid pouring pump 4 transports the evenly mixed water and medicine in the liquid dispensing tank 3 to the maturation tank 14 for maturation.

[0030] Example 5

[0031] like Figure 1 As shown, different from Example 1, in the automatic continuous injection device for powder profile control agent of the present invention, the liquid storage system is defined to include a second liquid pouring pump 5, a liquid storage tank 10 and a third liquid level meter 11.

[0032] Among them: the second liquid pouring pump 5 is connected between the maturation tank 14 and the liquid storage tank 10, and the third liquid level meter 11 is arranged on the liquid storage tank 10. The second liquid pouring pump 5 can deliver the matured mixed liquid into the liquid storage tank 10 for convenient storage.

[0033] Example 6

[0034] like Figure 1 As shown, different from Example 1, in the automatic continuous injection device for powder profile control agent of the present invention, the wellhead pumping system is defined to include a profile control pump 6, a pressure gauge 7, a reflux pipe 9 and a second flow meter 8.

[0035] Among them: the return pipe 9 is connected between the liquid storage tank 10 and the wellhead, the second flow meter 8 is arranged between the return pipe 9 and the wellhead, and the adjustment pump 6 and the pressure gauge 7 are arranged between the liquid storage tank 10 and the return pipe 9. Turning on the adjustment pump 6 can send the mixed liquid into the wellhead, and the excess mixed liquid will flow back to the liquid storage tank 10 through the return pipe 9.

[0036] Example 7

[0037] The method for automatic continuous injection of powder profile control agent of the present invention specifically includes: first determining the concentration of the required agent, and then calculating the amount of the required agent and the amount of solvent water according to the concentration; opening the water adding electric valve 20 to add solvent water in the liquid preparation tank 3, and when the liquid level in the liquid preparation tank 3 reaches the specified height, the powder feeder 1 automatically and evenly transports the powder agent to the feeder 21 through spiral transmission for weighing and metering, and then evenly sprinkles it into the liquid preparation tank 3 through the electric vibrating screen 17 for stirring and online mixing. After the predetermined amount of agent is added, the agent and the solvent water are evenly dispersed in the liquid preparation tank 3 and then enter the maturation tank 14 through the first liquid pouring pump 4. After maturation is completed, they enter the liquid storage tank 10 through the second liquid pouring pump 5 for storage, and finally are pumped to the wellhead by the profile control pump 6.

Claims

1. Automatic continuous injection device for powder profile control agent, characterized in that: It includes a drug administration system, a liquid preparation system, a maturation system, a liquid storage system and a wellhead pumping system connected in sequence; the drug administration system transports the medicine to the liquid preparation system; the liquid preparation system is used to mix the medicine and water to obtain a mixed liquid; the maturation system is used to mature the mixed liquid; the liquid storage system is used to store the matured mixed liquid; and the wellhead pumping system is used to deliver the mixed liquid stored in the liquid storage system to the wellhead.

2. The automatic continuous injection device for powder profile control agent according to claim 1, characterized in that: The drug delivery system comprises a medicine loading machine (1), a feeder (21), a weighing calculator (2) and an electric vibrating screen (17); the discharge port of the medicine loading machine (1) is connected to the feed port of the feeder (21), the feeder (21) is arranged on the weighing calculator (2), and the discharge port of the feeder (21) is connected to the feed port of the electric vibrating screen (17).

3. The automatic continuous injection device for powder profile control agent according to claim 2, characterized in that: The liquid distribution system comprises a water supply pipe (18), a water supply electric valve (20), a first flow meter (19), a first agitator (16), a liquid distribution tank (3) and a first liquid level meter (15); the first agitator (16) is arranged in the liquid distribution tank (3), the first liquid level meter (15) is arranged on the liquid distribution tank (3), the water supply pipe (18) is connected to the water inlet of the liquid distribution tank (3), and the first flow meter (19) and the water supply electric valve (20) are connected to the water supply pipe (18) in sequence.

4. The automatic continuous injection device for powder profile control agent according to claim 3, characterized in that: The maturation system comprises a maturation tank (15), a second stirrer (13), a second liquid level gauge (12) and a first liquid infusion pump (4); the first liquid infusion pump (4) is connected between the liquid mixing tank (3) and the maturation tank (14), the second stirrer (13) is arranged in the maturation tank (14), and the second liquid level gauge (12) is arranged on the maturation tank (14).

5. The automatic continuous injection device for powder profile control agent according to claim 4, characterized in that: The liquid storage system comprises a second liquid pouring pump (5), a liquid storage tank (10) and a third liquid level gauge (11); the second liquid pouring pump (5) is connected between the maturation tank (14) and the liquid storage tank (10), and the third liquid level gauge (11) is arranged on the liquid storage tank (10).

6. The automatic continuous injection device for powder profile control agent according to claim 5, characterized in that: The wellhead pumping system comprises a regulating pump (6), a pressure gauge (7), a return pipe (9) and a second flow meter (8); the return pipe (9) is connected between a liquid storage tank (10) and a wellhead, the second flow meter (8) is arranged between the return pipe (9) and the wellhead, and the regulating pump (6) and the pressure gauge (7) are arranged between the liquid storage tank (10) and the return pipe (9).

7. A method for automatic continuous injection of a powder profile control agent, implemented using the automatic continuous injection device for a powder profile control agent according to claim 6, characterized in that: First, the concentration of the required agent is determined, and then the amount of the required agent and the amount of solvent water are calculated according to the concentration; the water adding electric valve (20) is opened to add solvent water into the liquid preparation tank (3); when the liquid level in the liquid preparation tank (3) reaches a specified height, the powder feeder (1) automatically and evenly conveys the powder agent to the feeder (21) through a spiral transmission for weighing and metering, and then the powder agent is evenly sprinkled into the liquid preparation tank (3) through an electric vibrating screen (17) for stirring and online mixing; when a predetermined amount of agent is added, the agent and the solvent water are evenly dispersed in the liquid preparation tank (3) and then enter the maturation tank (14) through the first liquid pouring pump (4); after maturation is completed, the agent enters the liquid storage tank (10) for storage through the second liquid pouring pump (5), and finally is pumped to the wellhead by the profile control pump (6).

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