Oil field acidification sewage treatment device for oil field

Abstract

The utility model relates to the field of oil fields, in particular to an oil field acidified sewage treatment device for an oil field, which comprises a base used for bearing an oil field acidified sewage treatment assembly and a separation cabin arranged above the base and used for carrying out oil-water separation on oil field acidified sewage. The device is provided with the separation cabin, the stirring blades, the agent barrel, the precipitation cabin, the peeping window, the flocculating agent barrel, the filter cabin and the activated carbon filter bag, oil field acidification sewage enters the separation cabin, a proper amount of dispersing agent can be added into the sewage in the separation cabin through the agent barrel, and the dispersing agent and the sewage are fully mixed through the stirring blades; in this way, oil-water separation is firstly carried out on the oilfield acidified sewage, grease and sewage are separated, then the sewage without the grease enters the precipitation tank, then a proper amount of flocculating agent is added to be mixed with the sewage subjected to primary treatment for standing, and the standing condition of the sewage in the precipitation tank can be directly observed through the peeping window.

Description

Technical Field

[0001] The utility model relates to the field of oil fields, in particular to an oil field acidified sewage treatment device for oil fields. Background Art

[0002] An oil field refers to an area of ​​naturally occurring hydrocarbons underground, usually a general term for oil layers that accumulate underground in a specific area. Oil well acidizing is an effective method to increase oil well production. It injects working acid into the formation through a wellbore, and uses the chemical reaction between the acid and reactive minerals in the formation to dissolve the connected pores in the reservoir or the rocks on the walls of natural fractures, thereby increasing the flow capacity of the pores and fractures, thereby increasing oil well production. However, acidified wastewater will be produced during the acidification of oil fields. Acidified wastewater cannot be discharged directly, so a sewage treatment device is required. A sewage treatment device is a device or system used to treat sewage, which can convert wastewater containing various pollutants into dischargeable or reusable water resources.

[0003] After searching, an oilfield wastewater treatment device with a publication number of CN219942571U is found, which specifically discloses an oilfield wastewater treatment device, including a base plate, a stirring barrel is rotatably mounted on the base plate, a dosing tube is installed through the outer surface of the stirring barrel, a second sealing cover is threadedly connected to the dosing tube, a filtering mechanism is arranged on the base plate, the filtering mechanism is connected to the stirring barrel, a shaft rod is rotatably mounted in the stirring barrel, the right end of the shaft rod extends outside the stirring barrel, a plurality of groups of stirring rods are installed on the part of the shaft rod located in the stirring barrel, and a driving mechanism for driving the stirring barrel and the shaft rod to rotate simultaneously is installed on the base plate. The utility model arranges a driving mechanism, a shaft rod and a stirring rod, and drives the stirring barrel, the shaft rod and the stirring rod to rotate simultaneously through the driving mechanism, so that the sewage and the sewage treatment agent can be mixed more quickly, thereby improving the sewage treatment efficiency.

[0004] During the use of the existing oilfield acid wastewater treatment device, due to the complex composition of the oilfield acid wastewater containing grease, impurities and harmful substances, the treatment method that only relies on mixing chemicals and sewage is too simple and cannot completely remove the grease and harmful substances in the oilfield acid wastewater. In addition, the above-mentioned comparative cases also lack other sewage treatment and filtration means. Therefore, when the oilfield acid wastewater treatment device is used, it is necessary to repeatedly treat the oilfield acid wastewater, which not only delays the overall treatment time, but also increases the cost of oilfield acid wastewater treatment.

[0005] Therefore, it is necessary to invent an oilfield acidified wastewater treatment device for oilfields to solve the above problems. Utility Model Content

[0006] The utility model aims to provide an oilfield acidified wastewater treatment device for oilfields, which realizes a three-stage filtration effect through a separation cabin, a stirring blade, a reagent barrel, a sedimentation cabin, a peep window, a flocculant barrel, a filter cabin and an activated carbon filter bag. The three-stage filtration method can thoroughly remove the grease, impurities and harmful substances contained in the oilfield acidified wastewater, so that the oilfield acidified wastewater can reach the standard of reuse or direct discharge after treatment, avoiding the tedious operation of repeatedly treating the oilfield acidified wastewater, improving the overall treatment time, and saving the oilfield acidified wastewater treatment time. The invention aims to solve the problem that in the prior art, the oilfield acid wastewater treatment device has a complex composition containing grease, impurities and harmful substances during use. The treatment method that only relies on mixing chemicals and sewage is too simple and cannot completely remove the grease and harmful substances in the oilfield acid wastewater. In addition, the above-mentioned comparative case also lacks other sewage treatment and filtration means. Therefore, when the oilfield acid wastewater treatment device is used, it is necessary to repeatedly treat the oilfield acid wastewater, which not only delays the overall treatment time, but also increases the cost of oilfield acid wastewater treatment.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oilfield acidified wastewater treatment device for oilfields, comprising a base for carrying an oilfield acidified wastewater treatment component;

[0008] A separation cabin is arranged above the base, and is used for oil-water separation of oilfield acidified wastewater, and a servo motor is arranged at the bottom of the separation cabin, an output end of the servo motor is fixedly connected to a stirring rod, and a stirring blade is fixedly installed on the outside of the stirring rod, a hatch is arranged on the top of the separation cabin, a medicine barrel is fixedly installed above the hatch, and a medicine outlet pipe is fixedly installed on the outside of the medicine barrel;

[0009] The sedimentation tank is arranged on one side of the separation tank, and is used to remove harmful impurities in the oilfield acidified wastewater. A peep window is provided on the outside of the sedimentation tank. A driving motor is fixedly installed on the top of the sedimentation tank, and a flocculant barrel is provided on one side of the driving motor.

[0010] The filter cabin is arranged on the other side of the sedimentation cabin, and is used for the final filtration of the oilfield acidified wastewater. A top cover is arranged above the filter cabin, and an activated carbon filter bag is fixedly installed inside the top cover. A pressurized water pump is fixedly installed on the top of the top cover, and one end of the pressurized water pump is fixedly connected to a pumping pipe.

[0011] Preferably, a threaded rod penetrates the outside of the medicine outlet tube, and a partition plate is fixedly installed on the outside of the threaded rod.

[0012] Preferably, a water inlet filter barrel is provided on one side of the separation cabin, a barrel cover is fixedly installed on the top of the water inlet filter barrel, and a half-moon dividing groove is provided inside the water inlet filter barrel.

[0013] Preferably, a fixing bolt penetrates the outside of the water inlet filter barrel, one end of the fixing bolt is movably connected to a debris filter, and a debris outlet is opened on the outside of the water inlet filter barrel.

[0014] Preferably, an electromagnetic control valve is fixedly installed on the outside of the separation cabin, and one end of the electromagnetic control valve is fixedly connected to a water supply pipeline.

[0015] Preferably, a connecting rod is fixedly mounted on the output end of the driving motor, and a mixing blade is fixedly mounted on the outside of the connecting rod.

[0016] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0017] 1. The utility model is provided with a separation cabin, a stirring blade, a reagent barrel, a sedimentation cabin, a peep window, a flocculant barrel, a filter cabin and an activated carbon filter bag. The acidified wastewater of the oilfield enters the separation cabin, and a proper amount of dispersant can be added to the wastewater in the separation cabin through the reagent barrel, and the dispersant and the wastewater are fully integrated by the stirring blade, so that the acidified wastewater of the oilfield is first separated from oil and water, and the grease and wastewater are separated, and then the wastewater without grease enters the sedimentation cabin again, and then a proper amount of flocculant is added to mix with the wastewater treated once and let it stand, and the sedimentation can be directly observed through the peep window. The sewage in the tank is left to stand for a long time, and the flocculant is allowed to absorb most of the harmful substances in the sewage. Then, the secondary filtered sewage can be pumped out by a pressure water pump and sent to the filter tank for tertiary filtration through an activated carbon filter bag. This three-time filtration method can thoroughly remove the grease, impurities and harmful substances contained in the oilfield acidified sewage, so that the oilfield acidified sewage can meet the standards for reuse or direct discharge after treatment, avoiding the tedious operation of repeatedly treating the oilfield acidified sewage, improving the overall treatment time efficiency, and saving the cost of oilfield acidified sewage treatment;

[0018] 2. The utility model is provided with an inlet filter barrel, a barrel cover, a half-moon dividing groove, fixing bolts, a debris filter and a debris outlet. Since the oilfield acidified wastewater itself has certain impurities and dirt before treatment, if it is directly sent to the separation cabin for oil-water separation without treatment, it will undoubtedly increase the difficulty of sewage treatment. The oilfield acidified wastewater can be injected into the inlet filter barrel first, and the sewage enters the bottom of the barrel from the half-moon dividing groove. As the sewage floats up, the debris filter on one side of the half-moon dividing groove will intercept large impurities and dirt, and the sewage after preliminary filtration continues to float up through the pipeline into the separation cabin. The residual impurities and dirt can be discharged through the debris outlet after the injection of sewage is stopped. This reduces the pressure on the treatment of oilfield acidified wastewater and also improves the treatment effect of oilfield acidified wastewater from the side. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the separation cabin structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the water inlet filter barrel structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the debris filter of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the sedimentation tank of the utility model;

[0025] Figure 6 This is a schematic diagram of the filter cabin structure of the utility model.

[0026] Description of reference numerals:

[0027] 1. Base; 2. Separation cabin; 3. Servo motor; 4. Stirring rod; 5. Stirring blade; 6. Hatch cover; 7. Chemical barrel; 8. Chemical outlet pipe; 9. Threaded rod; 10. Partition plate; 11. Water inlet filter barrel; 12. Barrel cover; 13. Half-moon dividing groove; 14. Fixing bolt; 15. Debris filter screen; 16. Debris outlet; 17. Solenoid control valve; 18. Water supply pipeline; 19. Sedimentation cabin; 20. Peeping window; 21. Driving motor; 22. Connecting rod; 23. Mixing blade; 24. Flocculant barrel; 25. Filter cabin; 26. Top cover; 27. Activated carbon filter bag; 28. Pressurized water pump; 29. ​​Pumping pipeline. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] The utility model provides Figure 1-6 An oilfield acid wastewater treatment device for an oilfield shown includes a base 1 for carrying an oilfield acid wastewater treatment component;

[0030] A separation cabin 2 is arranged above the base 1 and is used for oil-water separation of oilfield acidified wastewater, and a servo motor 3 is arranged at the bottom of the separation cabin 2, a stirring rod 4 is fixedly connected to the output end of the servo motor 3, a stirring blade 5 is fixedly installed on the outside of the stirring rod 4, a hatch 6 is arranged on the top of the separation cabin 2, a medicine barrel 7 is fixedly installed above the hatch 6, and a medicine outlet pipe 8 is fixedly installed on the outside of the medicine barrel 7;

[0031] The sedimentation tank 19 is arranged on one side of the separation tank 2, and is used to remove harmful impurities in the oilfield acidified wastewater. A peep window 20 is provided on the outside of the sedimentation tank 19. A driving motor 21 is fixedly installed on the top of the sedimentation tank 19, and a flocculant barrel 24 is provided on one side of the driving motor 21.

[0032] The filter chamber 25 is arranged on the other side of the sedimentation chamber 19, and is used for the final filtration of the oilfield acidified wastewater. A top cover 26 is arranged above the filter chamber 25, and an activated carbon filter bag 27 is fixedly installed inside the top cover 26. A pressurized water pump 28 is fixedly installed on the top of the top cover 26, and one end of the pressurized water pump 28 is fixedly connected to a pumping pipe 29. The wastewater with grease removed enters the sedimentation chamber 19 again, and then a proper amount of flocculant is added to mix with the once treated wastewater and let it stand. The standing condition of the wastewater inside the sedimentation chamber 19 can be directly observed through the peep window 20. After the flocculant absorbs most of the harmful substances in the wastewater, the pressurized water pump 28 can be used to extract the second-filtered wastewater and send it into the filter chamber 25 to complete the third filtration through the activated carbon filter bag 27.

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a threaded rod 9 passes through the outside of the medicine outlet pipe 8, and a partition plate 10 is fixedly installed on the outside of the threaded rod 9. The angle of the partition plate 10 inside the medicine outlet pipe 8 can be adjusted by the threaded rod 9, so as to control the discharge amount of the dispersant. A water inlet filter barrel 11 is arranged on one side of the separation cabin 2, and a barrel cover 12 is fixedly installed on the top of the water inlet filter barrel 11. A half-moon dividing groove 13 is arranged inside the water inlet filter barrel 11. The oilfield acidified sewage can be injected into the water inlet filter barrel 11 first, and the sewage enters the barrel bottom from the half-moon dividing groove 13, and then flows into the bottom of the barrel. As the sewage floats, the debris filter 15 on one side of the semi-lunar dividing groove 13 will intercept large impurities and dirt, and the sewage after preliminary filtration continues to float and enters the separation cabin 2 through the pipeline. A fixing bolt 14 penetrates the outside of the water inlet filter barrel 11, and one end of the fixing bolt 14 is movably connected to the debris filter 15. A debris outlet 16 is provided on the outside of the water inlet filter barrel 11. The remaining impurities and dirt can be discharged through the debris outlet 16 after the sewage injection is stopped, which reduces the pressure on the treatment of oilfield acidified sewage.

[0034] like Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, an electromagnetic control valve 17 is fixedly installed on the outside of the separation cabin 2, and one end of the electromagnetic control valve 17 is fixedly connected to a water supply pipe 18. The electromagnetic control valve 17 can control the sewage at the bottom to enter the sedimentation cabin 19 after the separation of water and oil is completed in the separation cabin 2. A connecting rod 22 is fixedly installed on the output end of the driving motor 21, and a mixing blade 23 is fixedly installed on the outside of the connecting rod 22. The mixing blade 23 is convenient for mixing the flocculant and the once filtered sewage, so that the flocculant can fully play its role.

[0035] The working principle of the utility model is as follows: firstly, the external power supply is turned on, and the pipeline of the oilfield acidified sewage pipe and the pipe above the barrel cover 12 of the water inlet filter barrel 11 are connected, so that the sewage enters the water inlet filter barrel 11 from the pipeline, and then the sewage enters the bottom of the barrel from the semi-moon separation groove 13. As the sewage floats up, the debris filter 15 on one side of the semi-moon separation groove 13 will intercept large impurities and dirt, and the sewage after preliminary filtration will continue to float up through the pipeline and enter the separation cabin 2. The remaining impurities and dirt can be discharged through the debris outlet 16 after the injection of sewage is stopped, which reduces the pressure for the treatment of oilfield acidified sewage. The force is then twisted, and the threaded rod 9 is adjusted to adjust the angle of the partition plate 10 inside the medicine outlet pipe 8, so as to control the discharge amount of the dispersant, so that the dispersant in the medicine barrel 7 enters the separation cabin 2 through the medicine outlet pipe 8 and mixes with the sewage, and then the switch of the servo motor 3 is turned on, so that the servo motor 3 drives the stirring blade 5 to rotate, and the stirring blade 5 is used to fully blend the dispersant and the sewage, so that the oilfield acidified sewage is first separated from the oil and water, and the grease and sewage are separated. After the oil and water are separated for a certain period of time, the electromagnetic control valve 17 can be controlled to allow the bottom sewage to enter the sedimentation cabin 19, and then the grease is removed. After the water enters the sedimentation tank 19, an appropriate amount of flocculant is added to the sedimentation tank 19 through the flocculant barrel 24 to mix with the once treated sewage and let it stand. At this time, the switch of the drive motor 21 can be turned on to allow the mixing blades 23 to assist the once treated sewage and the flocculant to be fully mixed. Then, during the standing process, the internal sewage standing situation of the sedimentation tank 19 can be directly observed through the peep window 20, and the flocculant is allowed to absorb most of the harmful substances in the sewage. Then, the switch of the pressure water pump 28 can be turned on, and the secondary filtered sewage is pumped into the filter tank 25 through the pressure water pump 28 and sent to the activated carbon filter bag 27 for completion. The three-time filtration method can completely remove the grease, impurities and harmful substances contained in the oilfield acidified wastewater, so that the oilfield acidified wastewater can reach the standard of reuse or direct discharge after treatment. The oilfield acidified wastewater that enters the filter cabin 25 and completes the three-time filtration can be discharged normally. Finally, after completing the installation and use of all the oilfield acidified wastewater treatment devices according to the above operations, turn off the switch of the servo motor 3, turn off the switch of the drive motor 21, and cut off the external power supply if it is not used for a long time. In this way, the use process of the oilfield acidified wastewater treatment device for the oilfield is completed.

[0036] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An oilfield acid wastewater treatment device for oilfields, characterized in that: include A base (1) for carrying an oilfield acid wastewater treatment component; A separation cabin (2) is arranged above the base (1) and is used for separating oil and water from oilfield acidified wastewater. A servo motor (3) is arranged at the bottom of the separation cabin (2). The output end of the servo motor (3) is fixedly connected to a stirring rod (4). A stirring blade (5) is fixedly installed on the outside of the stirring rod (4). A hatch cover (6) is arranged on the top of the separation cabin (2). A medicine barrel (7) is fixedly installed above the hatch cover (6). A medicine outlet pipe (8) is fixedly installed on the outside of the medicine barrel (7). A sedimentation tank (19) is arranged on one side of the separation tank (2) and is used to remove harmful impurities in the oilfield acidified wastewater. A peep window (20) is provided on the outside of the sedimentation tank (19). A driving motor (21) is fixedly installed on the top of the sedimentation tank (19). A flocculant barrel (24) is provided on one side of the driving motor (21). The filter chamber (25) is arranged on the other side of the sedimentation chamber (19) and is used for final filtration of the oilfield acidified wastewater. A top cover (26) is arranged above the filter chamber (25). An activated carbon filter bag (27) is fixedly installed inside the top cover (26). A pressurized water pump (28) is fixedly installed on the top of the top cover (26). One end of the pressurized water pump (28) is fixedly connected to a pumping pipe (29).

2. The oilfield acidified wastewater treatment device for oilfields according to claim 1, characterized in that: A threaded rod (9) penetrates the outside of the medicine outlet tube (8), and a partition plate (10) is fixedly mounted on the outside of the threaded rod (9).

3. The oilfield acidified wastewater treatment device for oilfields according to claim 1, characterized in that: A water inlet filter barrel (11) is provided on one side of the separation cabin (2), a barrel cover (12) is fixedly installed above the water inlet filter barrel (11), and a half-moon separation groove (13) is provided inside the water inlet filter barrel (11).

4. The oilfield acidified wastewater treatment device for oilfields according to claim 3, characterized in that: A fixing bolt (14) penetrates the outside of the water inlet filter barrel (11), one end of the fixing bolt (14) is movably connected to a debris filter (15), and a debris outlet (16) is opened on the outside of the water inlet filter barrel (11).

5. The oilfield acidified wastewater treatment device for oilfields according to claim 1, characterized in that: An electromagnetic control valve (17) is fixedly installed on the outside of the separation cabin (2), and one end of the electromagnetic control valve (17) is fixedly connected to a water supply pipeline (18).

6. The oilfield acidified wastewater treatment device for oilfields according to claim 1, characterized in that: A connecting rod (22) is fixedly mounted on the output end of the driving motor (21), and a mixing blade (23) is fixedly mounted on the outside of the connecting rod (22).

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