Deep brine injection and extraction increasing system

Abstract

The utility model is applicable to the technical field of brine exploitation, and provides a deep brine injection and extraction increasing system which comprises a main pipeline, two ends of the main pipeline are respectively connected with a system main water inlet and a system main water outlet, and a water treatment unit, an exhaust device, a pressurizing device and a monitoring device are arranged on the main pipeline. The water treatment unit comprises a filtering device; the filtering device comprises a coarse filtering assembly and a fine filtering assembly; a heating unit and a medicine dissolving unit are respectively arranged on the main pipeline between the water treatment unit and the exhaust device, the heating unit is used for carrying out temperature-controlled heating on the water body, and the medicine dissolving unit is used for carrying out medicine dissolving and uniform mixing on the water body. According to the device, pressurization, salt dissolving and displacement integrated water injection and extraction increasing can be integrally achieved, the brine target resource efficiency can be improved, the extraction difficulty is reduced, and the brine extraction sustainability is enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of brine mining, and particularly relates to a deep brine water injection and mining system. Background Art

[0002] With the growing global demand for lithium batteries, lithium carbonate, as an important raw material for lithium battery manufacturing, has accounted for 52.5% of global consumption, which really reflects the vigorous development of my country's new energy industry. However, the phenomenon that the import dependence of lithium products exceeds 70% also reveals the severe challenges facing my country's lithium resource supply. Lithium resources are not only related to the stable development of the new energy industry, but also become one of the country's important strategic resources.

[0003] The characteristics of my country's lithium resources are mainly concentrated in salt lake brines, especially deep brines, which are rich in lithium, potassium and other resources and have important mining value. However, with the increasing reduction of shallow brine resources, the mining of deep brine has become particularly urgent. However, the deep brine reservoir has strong heterogeneity, low permeability, poor connectivity, and the coexistence of solid salt mines and liquid brine mines, which leads to low efficiency and poor sustainability of brine resource extraction, making it difficult to meet the current strong market demand.

[0004] In order to improve the extraction efficiency and sustainability, water flooding, chemical flooding, solution mining and other methods are considered to be effective technical means. However, these methods are still in the theoretical discussion stage and lack practical and operable injection system devices. Therefore, in view of the above situation, it is urgent to develop a deep brine water injection system to overcome the shortcomings in current practical applications. Utility Model Content

[0005] The purpose of the embodiment of the utility model is to provide a deep brine water injection and production enhancement system, aiming to solve the problems mentioned in the above background technology.

[0006] The embodiment of the utility model is implemented as follows: a deep brine injection and production enhancement system includes a main pipeline, wherein both ends of the main pipeline are respectively connected to the system main water inlet and the system main water outlet, and a water treatment unit, an exhaust device, a pressurizing device and a monitoring device are arranged on the main pipeline, wherein the water treatment unit includes a filtering device, and the filtering device includes a coarse filtering component and a fine filtering component; a heating unit and a dissolving drug unit are also respectively arranged on the main pipeline between the water treatment unit and the exhaust device, wherein the heating unit is used for controlling the temperature and heating the water body, and the dissolving drug unit is used for dissolving and mixing the water body.

[0007] A further technical solution is that the main pipeline has a three-section structure, the main pipeline between the heating unit and the dissolving unit and between the dissolving unit and the monitoring device adopts a heat-insulating pipe two, the main pipeline between the dissolving unit and the exhaust device, between the exhaust device and the monitoring device, and between the monitoring device and the system main water outlet adopts a heat-insulating, anti-corrosion and acid-proof pipe three, and the remaining main pipelines adopt an ordinary water supply type pipe one.

[0008] According to a further technical solution, the water treatment unit also includes a water pretreatment device and an activated carbon adsorption box, the inlet of the water pretreatment device is connected to the total water inlet of the system, the outlet of the water pretreatment device is connected to the inlet of the filtering device, the outlet of the filtering device is connected to the inlet of the activated carbon adsorption box, and the outlet of the activated carbon adsorption box is connected to the inlet of the heating unit.

[0009] According to a further technical solution, the water pretreatment device adopts a physical wire mesh structure.

[0010] According to a further technical solution, the system's total water inlet and the outlet of the water pretreatment device are also provided with a bypass connected to the inlet of an activated carbon adsorption box; the water pretreatment device, the filtering device and the activated carbon adsorption box are also connected to the sewage outlet of the water treatment unit.

[0011] A further technical solution is that the heating unit includes an internal water tank, a heating pipe and a temperature control device, the inlet of the internal water tank is connected to the outlet of the activated carbon adsorption box, the outlet of the internal water tank is connected to the inlet of the dissolution unit, a heating pipe is installed on the internal water tank, and the internal water tank is also provided with a temperature control device for heating adjustment.

[0012] A further technical solution is that the drug dissolving unit includes a drug dissolving box, a drug adding box, an agitator and a waste gas collecting bag. The inlet of the drug dissolving box is connected to the outlet of the built-in water tank, and the outlet of the drug dissolving box is connected to the exhaust device. An agitator is provided in the drug dissolving box, and a drug adding box and a waste gas collecting bag are respectively provided on the top of the drug dissolving box.

[0013] According to a further technical solution, the water at the system's total water inlet can be directly transported to the system's total water outlet, or the water at the system's total water inlet can be treated by one or more of the water treatment unit, the heating unit, and the drug dissolving unit and then pressurized by a pressurizing device before being transported to the system's total water outlet.

[0014] The embodiment of the utility model provides a deep brine water injection and production enhancement system, which can integrate pressurization, salt dissolution, and displacement to achieve integrated water injection and production enhancement. By injecting high-temperature water dissolved with certain functional reagents, on the one hand, it can increase the pressure and energy of the reservoir and improve and enhance the fluidity of the brine. On the other hand, it can improve the grade of the target resources, increase the recovery and sustainability of the resources, reduce the difficulty of recovery, and save cost and time compared with the previous step-by-step completion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of a deep brine water injection and production enhancement system provided in an embodiment of the utility model.

[0016] In the figure: 1-electric control cabinet, 2-water treatment unit, 21-water pretreatment device, 22-filtering device, 23-activated carbon adsorption box, 3-heating unit, 31-internal water tank, 32-heating pipe, 33-temperature control device, 4-drug dissolving unit, 41-drug adding box, 42-agitator, 43-waste gas collection bag, 5-exhaust device, 6-pressurizing device, 7-monitoring device, 8-valve, 9-flow meter, 10-pipeline one, 11-thermometer, 12-pipeline two, 13-pipeline three. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0018] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0019] like Figure 1 As shown, a deep brine water injection and production enhancement system provided by an embodiment of the utility model includes a main pipeline, both ends of which are respectively connected to the system main water inlet and the system main water outlet, and the main pipeline is provided with a water treatment unit 2, an exhaust device 5 (to improve the water injection efficiency), a pressurizing device 6 and a monitoring device 7, and the water treatment unit 2 includes a filtering device 22, and the filtering device 22 includes a coarse filtering component and a fine filtering component.

[0020] Among them, a heating unit 3 and a dissolving drug unit 4 are respectively arranged on the main pipeline between the water treatment unit 2 and the exhaust device 5. After resource extraction, tail water or other external source water enters the device system from the system's main water inlet. After the water treatment unit 2 filters and adsorbs the water input from the system's main water inlet, the heating unit 3 is used to control the temperature and heat the water, and the dissolving drug unit 4 is used to mix the water with the dissolving drug, and then it is pressurized and injected back into the target brine well from the system's main water outlet.

[0021] The main pipeline can be divided into a three-section structure in terms of material. The main pipelines between the heating unit 3 and the dissolving unit 4 and between the dissolving unit 4 and the monitoring device 7 adopt a heat-insulating pipe 12. The main pipelines between the dissolving unit 4 and the exhaust device 5, between the exhaust device 5 and the monitoring device 7, and between the monitoring device 7 and the system's main water outlet adopt a heat-insulating, anti-corrosion, and acid-proof pipe 13. The remaining main pipelines adopt an ordinary water supply pipe 10.

[0022] Preferably, it also includes an electric control cabinet 1, and the electric control cabinet 1 is used to provide electricity for various device systems.

[0023] Preferably, the water treatment unit 2 also includes a water pretreatment device 21 and an activated carbon adsorption box 23, the inlet of the water pretreatment device 21 is connected to the total water inlet of the system, the outlet of the water pretreatment device 21 is connected to the inlet of the filtering device 22, the outlet of the filtering device 22 is connected to the inlet of the activated carbon adsorption box 23, and the outlet of the activated carbon adsorption box 23 is connected to the inlet of the heating unit 3.

[0024] The water pretreatment device 21 mainly adopts a physical wire mesh structure to remove impurities, grass clippings and larger particles; the activated carbon adsorption box 23 is used to remove organic pollutants, harmful microorganisms and radioactive substances in the water.

[0025] The system's total water inlet and the outlet of the water pretreatment device 21 are also provided with a bypass connected to the inlet of the activated carbon adsorption box 23; the water pretreatment device 21, the filtering device 22 and the activated carbon adsorption box 23 are also connected to the sewage outlet of the water treatment unit 2 to facilitate sewage cleaning.

[0026] Preferably, the heating unit 3 includes an internal water tank 31, a heating pipe 32 and a temperature control device 33. The inlet of the internal water tank 31 is connected to the outlet of the activated carbon adsorption box 23, and the outlet of the internal water tank 31 is connected to the inlet of the dissolution unit 4. A heating pipe 32 is installed on the internal water tank 31. The internal water tank 31 is also provided with a temperature control device 33 for heating adjustment. The water body is heated to a predetermined temperature and then output.

[0027] Preferably, the dissolving unit 4 includes a dissolving box, a dosing box 41, an agitator 42 and a waste gas collection bag 43. The inlet of the dissolving box is connected to the outlet of the built-in water tank 31, and the outlet of the dissolving box is connected to the exhaust device 5. The dissolving box is equipped with an agitator 42, and the top of the dissolving box is respectively equipped with a dosing box 41 and a waste gas collection bag 43.

[0028] Preferably, the monitoring device 7 includes a flow meter 9, a thermometer 11, a pressure gauge and a data recorder, etc., and the specific arrangement quantity and position are not limited and can be set as needed; the main pipeline is controlled by a valve 8 in parallel design, and the specific arrangement quantity and position of the valve 8 are not limited and can be set as needed, and the water body can choose to pass through the functional system or bypass the functional system directly.

[0029] As described above, the water at the system's total water inlet can be directly transported to the system's total water outlet, or the water at the system's total water inlet can be transported to the system's total water outlet after being treated by one or more of the water treatment unit 2, the heating unit 3, and the drug dissolving unit 4 and pressurized by the pressurizing device 6. It should be noted that the main pipeline can be adaptively set and equipped with a valve 8, and the exhaust device 5 can be adaptively set in the same manner, that is, the required functional units can be individually exhausted.

[0030] The above-mentioned embodiment of the utility model provides a deep brine injection and production enhancement system, which can, by injecting high-temperature water dissolved with certain functional reagents, on the one hand, increase the pressure and energy of the reservoir, improve and enhance the fluidity of the brine, and on the other hand, improve the grade of the target resources, increase the recovery and sustainability of the resources.

[0031] Through the use of the utility model, water from various sources can be processed, heated, dissolved, and then pressurized and injected into the deep brine reservoir from the brine well, and the following effects can be achieved specifically:

[0032] 1) It can pressurize the depressurized formation after extraction, dissolve solid salt substances, increase the fluidity of brine, enhance the sustainability of brine extraction, reduce the difficulty of extraction, and improve the recovery rate;

[0033] 2) As the temperature rises, the solubility of lithium chloride increases. The injection of high-temperature water can increase the pressure and energy of the reservoir, thereby improving the grade of lithium and other resources in the brine in situ and enhancing the recovery efficiency;

[0034] 3) The reagent added to the drug dissolving unit 4 can be acid, other salts, lithium extractant or other reagents that are beneficial to improving the lithium grade compared to direct injection of water; the setting of the waste gas collection bag 43 can reduce the pollution of the ambient gas, and regular monitoring and replacement are sufficient; the drug adding box 41 can also be set to uniformly dose the drug to improve reliability;

[0035] 4) The addition of in-situ displacement agents or extractants to the brine reservoir can achieve in-situ displacement (or extraction) of lithium resources in the brine, improve the grade of the target resources in the produced brine, and thus increase the production volume;

[0036] 5) The setting of the pipeline system can achieve direct injection of raw water for increased production, and can also achieve single or collective operation of each system, with multiple working conditions optional;

[0037] 6) The main pipeline is divided into sections, with the first section not insulated, the second section insulated, and the third section insulated with corrosion protection. On the one hand, it can greatly increase the dissolution amount of the displacement agent, and on the other hand, it can ensure the addition of high-temperature water, increase the displacement and dissolution effect, and avoid the damage of the original high-temperature reservoir by the injection of low-temperature water. The setting of the anti-corrosion and insulation pipe can increase the service life of the pipeline, prevent salt formation, and reduce the difficulty of injection;

[0038] 7) The installation of fine water treatment system can re-inject wastewater after resource extraction, oilfield wastewater, etc., saving water resources.

[0039] In summary, the utility model provides an operating device system for brine water injection and production enhancement. The system can integrate pressurization, salt dissolution, and displacement to achieve integrated water injection and production enhancement. The use of the utility model system can improve the efficiency of brine target resources, reduce the difficulty of production, and enhance the sustainability of brine extraction, saving costs and time compared to the previous step-by-step completion.

[0040] In addition, the control, model and circuit connection of each component are not specifically limited and can be flexibly set in practical applications. The circuits, electronic components and modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by this utility model does not involve improvements to software and methods.

[0041] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A deep brine water injection and production enhancement system, comprising a main pipeline; The two ends of the main pipeline are respectively connected to the system main water inlet and the system main water outlet; The main pipeline is provided with a water treatment unit, an exhaust device, a pressurizing device and a monitoring device; The water treatment unit comprises a filter device, which comprises a coarse filter component and a fine filter component, characterized in that: A heating unit and a drug dissolving unit are also provided on the main pipeline between the water treatment unit and the exhaust device, respectively. The heating unit is used to control the temperature and heat the water body, and the drug dissolving unit is used to mix the drug dissolving in the water body.

2. The deep brine water injection and production enhancement system according to claim 1 is characterized in that: The main pipeline is a three-section structure; The main pipeline between the heating unit and the drug dissolving unit and between the drug dissolving unit and the monitoring device adopts a heat-insulating pipeline 2; The main pipelines between the dissolving unit and the exhaust device, between the exhaust device and the monitoring device, and between the monitoring device and the total water outlet of the system adopt heat-insulating, anti-corrosion and acid-proof pipelines. The rest of the main pipeline adopts ordinary water transmission type pipeline.

3. The deep brine water injection and production enhancement system according to claim 1 is characterized in that: The water treatment unit also includes a water pretreatment device and an activated carbon adsorption box; The inlet of the water pretreatment device is connected to the system main water inlet, the outlet of the water pretreatment device is connected to the inlet of the filtering device, the outlet of the filtering device is connected to the inlet of the activated carbon adsorption box, and the outlet of the activated carbon adsorption box is connected to the inlet of the heating unit.

4. The deep brine water injection and production enhancement system according to claim 3 is characterized in that: The water body pretreatment device adopts a physical wire mesh structure.

5. The deep brine water injection and production enhancement system according to claim 4 is characterized in that: The system's main water inlet and the outlet of the water pretreatment device are also provided with a bypass connected to the inlet of the activated carbon adsorption box; The water pretreatment device, the filtering device and the activated carbon adsorption box are also connected to the sewage outlet of the water treatment unit.

6. The deep brine water injection and production enhancement system according to any one of claims 3 to 5, characterized in that: The heating unit includes an internal water tank, a heating pipe and a temperature control device; The inlet of the internal water tank is connected to the outlet of the activated carbon adsorption box, and the outlet of the internal water tank is connected to the inlet of the drug dissolving unit; A heating pipe is installed on the internal water tank, and a temperature control device for heating and regulating is also provided on the internal water tank.

7. The deep brine water injection and production enhancement system according to claim 6, characterized in that: The drug dissolving unit comprises a drug dissolving box, a drug adding box, a stirrer and a waste gas collecting bag; The inlet of the medicine dissolving box is connected to the outlet of the internal water tank, and the outlet of the medicine dissolving box is connected to the exhaust device; A stirrer is arranged in the medicine dissolving box, and a medicine adding box and a waste gas collecting bag are respectively arranged on the top of the medicine dissolving box.

8. The deep brine water injection and production enhancement system according to claim 7, characterized in that: The water at the system's total water inlet can be directly transported to the system's total water outlet, or the water at the system's total water inlet can be treated by one or more of the water treatment unit, the heating unit, and the drug dissolving unit and then pressurized by a pressurizing device before being transported to the system's total water outlet.

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