Continuous mixing supercharging equipment based on flow and pressure control

Abstract

The invention relates to continuous mixing supercharging equipment based on flow and pressure control, which comprises a flow distribution module used for realizing pressure reduction and flow distribution of production water, and distributing and adjusting water quantity for mixing of polymers according to needs; the polymer adding, dispersing and dissolving module is used for storing and conveying dry powder materials and realizing rapid homogeneous mixing of polymers according to a set concentration; the pressurizing liquid feeding module is used for pressurizing the polymer solution in the curing tank through a liquid feeding pump and then conveying the polymer solution to a static mixer to be mixed with a surfactant, and PID (Proportion Integration Differentiation) control is adopted to realize variable-frequency control and constant-pressure liquid feeding of the liquid feeding pump; the multi-phase mixing module is used for controlling the adding proportion of the production water, the surfactant and the polymer mother liquor to complete full mixing of the polymer mother liquor, the production water and the surfactant and adjusting the final injection concentration so as to meet the requirements of different numbers of injection wells and different injection processes; meanwhile, real-time adjustment can be performed according to feedback conditions of the injection well.

Description

Technical fields:

[0001] This invention relates to a continuous mixing and boosting equipment based on flow and pressure control. Background technology:

[0002] In the process of preparing and outputting the target liquid, the front-end mixing and pressurization project is an important engineering project. Through the cooperation of multiple devices, the polymer and water are mixed and then enter the next skid-mounted equipment for processing.

[0003] Existing mixing and pressurizing equipment is often set up independently, lacking corresponding linkage and interaction between the various devices. It mainly relies on manual operation by staff according to the needs, resulting in low overall work efficiency and unreliable work accuracy. It cannot control the ratio based on the water flow and polymer screw feed rate to ensure that the polymer solution concentration meets the actual application requirements, and thus cannot be used in the next stage of equipment. Summary of the Invention:

[0004] This invention provides a continuous mixing and pressurizing device based on flow and pressure control. With a reasonable structural design, it employs a "low-pressure mixing + flow control + pressure control" approach, combined with multiple functional modules, to achieve precise control of incoming water pressure reduction and flow rate. This meets the water supply requirements for high-speed polymer mixing and grinding, as well as polymer mother liquor dilution, thereby improving overall work efficiency and accuracy. It can accurately measure the incoming water volume and polymer screw feed rate, control the polymer solution ratio, ensure the quality of the polymer solution, accurately grasp the changing trend of the polymer solution, adjust the polymer solution concentration in real time, and maintain a stable polymer solution concentration. It can adapt to the needs of different numbers of injection wells and different injection processes. Simultaneously, it can adjust and verify the polymer screw feed rate in real time based on feedback from the injection wells, meeting practical application requirements and solving the problems existing in the prior art.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0006] A continuous mixing and booster device based on flow and pressure control, the booster device comprising:

[0007] The flow distribution module is used to reduce the pressure and distribute the flow of production water, and to distribute and adjust the water volume as needed for polymer mixing and mother liquor dilution.

[0008] A polymer dosing, dispersing and dissolving module is used to store and transport dry powder materials to achieve rapid homogeneous mixing of polymers according to a set concentration.

[0009] The pressurized feeding module is used to pressurize the polymer solution in the curing tank and then deliver it to the static mixer to mix with the surfactant. PID control is used to achieve constant pressure feeding by frequency conversion control of the feeding pump.

[0010] The multiphase mixing module is used to control the addition ratio of production water, surfactant and polymer mother liquor to fully mix the three media, adjust the final injection concentration to meet the needs of different numbers of injection wells and different injection processes, and can be adjusted in real time according to the feedback from the injection wells.

[0011] A high-pressure electric ball valve is installed at the main inlet of the flow distribution module. This high-pressure electric ball valve is used to manually or automatically open and close. It works in conjunction with a pressure reducing valve located at the rear end of the electric valve to meet the water supply requirements for high-speed polymer mixing and grinding and polymer mother liquor dilution. A pressure transmitter is installed at the rear end of the pressure reducing valve. This pressure transmitter is used to detect the output pressure and is interlocked with the high-pressure electric ball valve at the front end of the pressure reducing valve. A flow regulating component is also installed at the rear end of the pressure reducing valve. This flow regulating component is set according to the well group data to realize the automatic adjustment of the production water flow. This flow regulating component is an intelligent flow measurement and control instrument.

[0012] The polymer in the dry powder tank of the polymer addition, dispersion and dissolution module is quantitatively delivered to the high-speed mixing funnel according to the set concentration requirements. The corresponding instantaneous liquid flow rate and dry powder delivery rate can be automatically adjusted so that the production water forms a high-speed water flow in the high-speed mixing funnel through the spray component. After the polymer is initially mixed by the high-speed water flow, it enters the homogenization component, which is a grinding pump. Under the action of the homogenization component, the polymer is fully dissolved to obtain a polymer solution.

[0013] The polymer dosing, dispersion and dissolution module includes a flow intelligent controller, a screw feeder, a check valve, a weighing component and a homogenizing component.

[0014] The polymer addition, dispersion and dissolution module can automatically adjust the incoming water flow rate to maintain and stabilize it at the set value. At the same time, it can automatically calculate the required amount of polymer based on the set polymer concentration and automatically adjust the feed rate of the screw feeder to maintain a certain ratio with the production water, so that the polymer can be evenly delivered to the high-speed mixing funnel to mix with the production water and maintain a constant polymer concentration.

[0015] The amount of polymer added and the production water flow rate can be automatically matched and controlled by a PLC program, and the polymer concentration deviation can be eliminated by periodic cumulative metering of the weighing component.

[0016] The model of the intelligent flow measurement and control instrument is GLZ-II-I50Z1.6, and the model of the weighing component is HT-CWC-4T.

[0017] The formula for calculating the polymer dry powder in the dry powder container is as follows:

[0018] m = Q max *C max *ρ

[0019] Where m is the dry powder requirement, Q max C is the maximum daily injection volume of the solution. max ρ represents the maximum polymer concentration, and ρ represents the dry powder density.

[0020] In the booster feeding module, the feeding pump is model D2H375N. The pressure transmitter can be used to detect the outlet pressure of the feeding pump, and the frequency converter can be used to adjust the discharge to maintain a constant outlet pressure of the feeding pump, ensuring stable liquid intake of the high-pressure injection pump. Low-shear sampling ports are set at the front and rear ends of the feeding pump, respectively. A safety valve, pressure transmitter, electromagnetic flow meter, sampling valve and check valve are connected at the rear end of the feeding pump.

[0021] The flow accuracy of the pressurized feeding module is no less than 1.5 grade, and the viscosity loss rate is ≤2%.

[0022] The multiphase mixing module has left-handed and right-handed mixing units segmented inside the pipes, which causes the liquid to continuously change its flow direction between the left-handed and right-handed mixing units. This not only pushes the central liquid to the periphery, but also pushes the peripheral fluid to the center, producing a good radial mixing effect.

[0023] This invention employs the aforementioned structure, using a flow distribution module to reduce pressure and distribute the flow of production water, enabling on-demand allocation and adjustment of water volume for polymer mixing; a polymer addition, dispersion, and dissolution module to store and transport dry powder materials, achieving rapid homogenization and mixing of the polymer according to a set concentration; a pressurized feeding module to pressurize the polymer solution in the maturation tank and transport it to a static mixer for mixing with surfactants, using PID control to achieve constant pressure feeding via frequency conversion of the feeding pump; and a multiphase mixing module to control the addition ratio of production water, surfactants, and polymer mother liquor, ensuring thorough mixing of the three media and adjusting the final injection concentration to adapt to the needs of different numbers of injection wells and different injection processes, offering advantages of precision, efficiency, safety, and practicality. Attached image description:

[0024] Figure 1 This is a schematic diagram of the structure of the present invention.

[0025] Figure 2 This is a schematic diagram of the assembly of the flow distribution module of the present invention.

[0026] Figure 3 This is a schematic diagram of the assembly of the polymer dosing, dispersing and dissolving module of the present invention.

[0027] Figure 4 This is an assembly diagram of the pressurized feeding module of the present invention.

[0028] Figure 5 This is an assembly diagram of the multiphase mixing module of the present invention. Detailed implementation method:

[0029] To clearly illustrate the technical features of this solution, the invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0030] like Figure 1-5 As shown, a continuous mixing and booster device based on flow and pressure control includes:

[0031] The flow distribution module is used to reduce the pressure and distribute the flow of production water, and to distribute and adjust the water volume as needed for polymer mixing and mother liquor dilution.

[0032] A polymer dosing, dispersing and dissolving module is used to store and transport dry powder materials to achieve rapid homogeneous mixing of polymers according to a set concentration.

[0033] The pressurized feeding module is used to pressurize the polymer solution in the curing tank and then deliver it to the static mixer to mix with the surfactant. PID control is used to achieve constant pressure feeding by frequency conversion control of the feeding pump.

[0034] The multiphase mixing module is used to control the addition ratio of production water, surfactant and polymer mother liquor to fully mix the three media, adjust the final injection concentration to meet the needs of different numbers of injection wells and different injection processes, and can be adjusted in real time according to the feedback from the injection wells.

[0035] A high-pressure electric ball valve is installed at the main inlet of the flow distribution module. This high-pressure electric ball valve is used to manually or automatically open and close. It works in conjunction with a pressure reducing valve located at the rear end of the electric valve to meet the water supply requirements for high-speed polymer mixing and grinding and polymer mother liquor dilution. A pressure transmitter is installed at the rear end of the pressure reducing valve. This pressure transmitter is used to detect the output pressure and is interlocked with the high-pressure electric ball valve at the front end of the pressure reducing valve. A flow regulating component is also installed at the rear end of the pressure reducing valve. This flow regulating component is set according to the well group data to realize the automatic adjustment of the production water flow. This flow regulating component is an intelligent flow measurement and control instrument.

[0036] The polymer in the dry powder tank of the polymer addition, dispersion and dissolution module is quantitatively delivered to the high-speed mixing funnel according to the set concentration requirements. The corresponding instantaneous liquid flow rate and dry powder delivery rate can be automatically adjusted so that the production water forms a high-speed water flow in the high-speed mixing funnel through the spray component. After the polymer is initially mixed by the high-speed water flow, it enters the homogenization component, which is a grinding pump. Under the action of the homogenization component, the polymer is fully dissolved to obtain a polymer solution.

[0037] The polymer dosing, dispersion and dissolution module includes a flow intelligent controller, a screw feeder, a check valve, a weighing component and a homogenizing component.

[0038] The polymer addition, dispersion and dissolution module can automatically adjust the incoming water flow rate to maintain and stabilize it at the set value. At the same time, it can automatically calculate the required amount of polymer based on the set polymer concentration and automatically adjust the feed rate of the screw feeder to maintain a certain ratio with the production water, so that the polymer can be evenly delivered to the high-speed mixing funnel to mix with the production water and maintain a constant polymer concentration.

[0039] The amount of polymer added and the production water flow rate can be automatically matched and controlled by a PLC program, and the polymer concentration deviation can be eliminated by periodic cumulative metering of the weighing component.

[0040] The model of the intelligent flow measurement and control instrument is GLZ-II-I50Z1.6, and the model of the weighing component is HT-CWC-4T.

[0041] The formula for calculating the polymer dry powder in the dry powder container is as follows:

[0042] m = Q max *C max *ρ

[0043] Where m is the dry powder requirement, Q max C is the maximum daily injection volume of the solution. max ρ represents the maximum polymer concentration, and ρ represents the dry powder density.

[0044] In the booster feeding module, the feeding pump is model D2H375N. The pressure transmitter can be used to detect the outlet pressure of the feeding pump, and the frequency converter can be used to adjust the discharge to maintain a constant outlet pressure of the feeding pump, ensuring stable liquid intake of the high-pressure injection pump. Low-shear sampling ports are set at the front and rear ends of the feeding pump, respectively. A safety valve, pressure transmitter, electromagnetic flow meter, sampling valve and check valve are connected at the rear end of the feeding pump.

[0045] The flow accuracy of the pressurized feeding module is no less than 1.5 grade, and the viscosity loss rate is ≤2%.

[0046] The multiphase mixing module has left-handed and right-handed mixing units segmented inside the pipes, which causes the liquid to continuously change its flow direction between the left-handed and right-handed mixing units. This not only pushes the central liquid to the periphery, but also pushes the peripheral fluid to the center, producing a good radial mixing effect.

[0047] The working principle of the continuous mixing and pressurizing equipment based on flow and pressure control in this embodiment of the invention is as follows: It adopts a "low-pressure mixing + flow control + pressure control" approach, combined with multiple functional modules, to achieve precise control of incoming water pressure reduction and flow rate. This meets the water supply requirements for high-speed polymer mixing and grinding, as well as polymer mother liquor dilution, thereby improving overall work efficiency and accuracy. It can accurately measure the incoming water volume and the polymer screw feed volume, control the polymer solution ratio, ensure the quality of the polymer solution, accurately grasp the changing trend of the polymer solution, adjust the polymer solution concentration in real time, and maintain a stable polymer solution concentration. It can adapt to the needs of different numbers of injection wells and different injection processes. Simultaneously, it can adjust and verify the polymer screw feed volume in real time based on feedback from the injection wells to meet practical application requirements.

[0048] Because existing traditional equipment lacks necessary communication and interaction, the overall workload of staff is too large, and the corresponding work time nodes cannot be accurately set. Therefore, the continuous mixing and pressurizing equipment in this application is adopted. By accurately controlling the flow and pressure parameters, the changing trend of the polymer solution can be accurately grasped, and a polymer solution that meets the actual process requirements can be obtained.

[0049] The overall solution mainly includes: a flow distribution module for depressurizing and distributing production water, allowing for on-demand allocation and adjustment of water volume for polymer mixing; a polymer addition, dispersion, and dissolution module for storing and conveying dry powder materials to achieve rapid homogenization and mixing of polymers according to a set concentration; a pressurized feeding module for pressurizing the polymer solution in the maturation tank and then conveying it to a static mixer for mixing with surfactants, using PID control to achieve constant pressure feeding via frequency conversion of the feeding pump; and a multiphase mixing module for controlling the addition ratio of production water, surfactants, and polymer mother liquor to achieve thorough mixing of the three media, adjusting the final injection concentration to meet the needs of different numbers of injection wells and different injection processes, while also allowing for real-time adjustments based on feedback from the injection wells.

[0050] For the flow distribution module, a high-pressure electric ball valve is installed at the main pipeline inlet of the flow distribution module. The high-pressure electric ball valve is used to realize manual or automatic opening and closing. In conjunction with the pressure reducing valve installed at the rear end of the electric valve, it meets the water supply requirements for high-speed polymer mixing and grinding and polymer mother liquor dilution. A pressure transmitter is installed at the rear end of the pressure reducing valve. The pressure transmitter is used to detect the output pressure and is interlocked with the high-pressure electric ball valve at the front end of the pressure reducing valve. A flow regulating component is also installed at the rear end of the pressure reducing valve. The flow regulating component is set according to the well group data to realize automatic adjustment of the production water flow. The flow regulating component is an intelligent flow measurement and control instrument.

[0051] The polymer dosing, dispersion, and dissolution module is equipped with a dry powder tank. The polymer in the dry powder tank is quantitatively delivered to the high-speed mixing funnel according to the set concentration requirements. The corresponding instantaneous liquid flow rate and dry powder delivery rate can be automatically adjusted so that the production water forms a high-speed water flow in the high-speed mixing funnel through the spray component. After the polymer is initially mixed by the high-speed water flow, it enters the homogenization component, which is a grinding pump. Under the action of the homogenization component, the polymer is fully dissolved to obtain a polymer solution.

[0052] The polymer dosing, dispersion and dissolution module includes a flow intelligent controller, a screw feeder, a check valve, a weighing component and a homogenizing component.

[0053] The polymer addition, dispersion, and dissolution module can automatically adjust the incoming water flow rate to maintain and stabilize it at the set value. At the same time, it automatically calculates the required amount of polymer based on the set polymer concentration and automatically adjusts the feed rate of the screw feeder to maintain a certain ratio with the production water, so that the polymer can be evenly delivered to the high-speed mixing funnel to mix with the production water and maintain a constant polymer concentration. The amount of polymer added and the production water flow rate can be automatically matched and controlled by a PLC program, and the periodic cumulative metering of the weighing component can eliminate polymer concentration deviations.

[0054] Specifically, the model of the intelligent flow measurement and control instrument is GLZ-II-I50Z1.6, and the model of the weighing component is HT-CWC-4T.

[0055] Furthermore, the formula for calculating the polymer dry powder in the dry powder container is as follows:

[0056] m = Q max *C max *ρ

[0057] Where m is the dry powder requirement, Q max C is the maximum daily injection volume of the solution. max ρ represents the maximum polymer concentration, and ρ represents the dry powder density.

[0058] Based on the above calculation formula, the powder addition cycle can be accurately calculated according to the number of injection wells, thus avoiding insufficient polymer in the equipment.

[0059] For the pressurized feeding module, the polymer solution is pressurized and delivered to the static mixer via a feeding pump for mixing with the surfactant. The feeding pump in the pressurized feeding module is model D2H375N. The outlet pressure of the feeding pump can be detected by a pressure transmitter, and the discharge rate can be adjusted by frequency conversion to maintain a constant outlet pressure, ensuring stable liquid intake of the high-pressure injection pump. Low-shear sampling ports are set at the front and rear ends of the feeding pump, respectively. A safety valve, pressure transmitter, electromagnetic flow meter, sampling valve, and check valve are connected to the rear end of the feeding pump.

[0060] Through the coordinated action of the above-mentioned functional components, the flow accuracy of the pressurized feeding module is no less than 1.5 grade, and the viscosity loss rate is ≤2%.

[0061] For the multiphase mixing module, the pipeline of the multiphase mixing module is divided into left-handed mixing units and right-handed mixing units, so that the liquid continuously changes the flow direction between the left-handed mixing units and the right-handed mixing units. This not only pushes the central liquid to the periphery, but also pushes the peripheral fluid to the center, producing a good radial mixing effect. In the multiphase mixing module, the overall viscosity loss is ≤3%, which can adapt to the needs of different numbers of injection wells and different injection processes.

[0062] It should be noted that the entire equipment is lifted from the top and has a high-strength base at the bottom of the skid, which allows for short-distance dragging; the whole unit adopts a frame structure, with the outer wall made of 2mm thick steel plate and the interior lined with flame-retardant insulation and decorative materials; it is equipped with dust removal and ventilation equipment, and the whole unit is easy to disassemble and maintain.

[0063] In summary, the continuous mixing and pressurizing equipment based on flow and pressure control in this embodiment of the invention adopts a "low-pressure mixing + flow control + pressure control" approach, combined with multiple functional modules, to achieve precise control of incoming water pressure reduction and flow rate. This meets the water supply requirements for high-speed polymer mixing and grinding and polymer mother liquor dilution, thereby improving overall work efficiency and accuracy. It can accurately measure the incoming water volume and polymer screw feed volume, control the polymer solution ratio, ensure the quality of the polymer solution, accurately grasp the changing trend of the polymer solution, adjust the polymer solution concentration in real time, and maintain the stability of the polymer solution concentration. It can adapt to the needs of different injection wells and different injection processes, and can also adjust and verify the polymer screw feed volume in real time based on the feedback from the injection wells to meet practical application requirements.

[0064] The above specific embodiments should not be construed as limiting the scope of protection of the present invention. For those skilled in the art, any alternative improvements or modifications made to the embodiments of the present invention shall fall within the scope of protection of the present invention.

[0065] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A continuous mixing and booster equipment based on flow and pressure control, characterized in that, The booster device includes: The flow distribution module is used to reduce the pressure and distribute the flow of production water, and to distribute and adjust the water volume as needed for polymer mixing. A polymer dosing, dispersing and dissolving module is used to store and transport dry powder materials to achieve rapid homogeneous mixing of polymers according to a set concentration. The pressurized feeding module is used to pressurize the polymer solution in the curing tank and then deliver it to the static mixer to mix with the surfactant. PID control is used to achieve constant pressure feeding by frequency conversion control of the feeding pump. The multiphase mixing module is used to control the addition ratio of production water, surfactant and polymer mother liquor to fully mix the three media, adjust the final injection concentration to meet the needs of different numbers of injection wells and different injection processes, and can be adjusted in real time according to the feedback from the injection wells.

2. The continuous mixing and booster equipment based on flow and pressure control according to claim 1, characterized in that: A high-pressure electric ball valve is installed at the main pipeline inlet of the flow distribution module. The high-pressure electric ball valve is used to realize manual or automatic opening and closing. In conjunction with the pressure reducing valve installed at the rear end of the electric valve, it meets the water supply requirements for high-speed polymer mixing and grinding and polymer mother liquor dilution. A pressure transmitter is installed at the rear end of the pressure reducing valve. The pressure transmitter is used to detect the output pressure and is interlocked with the high-pressure electric ball valve at the front end of the pressure reducing valve. A flow regulation component is also provided at the rear end of the pressure reducing valve. The flow regulation component is set according to the well group data to realize the automatic adjustment of the production water flow. The flow regulation component is an intelligent flow measurement and control instrument.

3. The continuous mixing and booster equipment based on flow and pressure control according to claim 1, characterized in that: The polymer in the dry powder tank of the polymer addition, dispersion and dissolution module is quantitatively delivered to the high-speed mixing funnel according to the set concentration requirements. The corresponding instantaneous liquid flow rate and dry powder delivery rate can be automatically adjusted so that the production water forms a high-speed water flow in the high-speed mixing funnel through the spray component. After the polymer is initially mixed by the high-speed water flow, it enters the homogenization component, which is a grinding pump. Under the action of the homogenization component, the polymer is fully dissolved to obtain a polymer solution. The polymer dosing, dispersion and dissolution module includes a flow intelligent controller, a screw feeder, a check valve, a weighing component and a homogenizing component.

4. The continuous mixing and booster equipment based on flow and pressure control according to claim 3, characterized in that: The polymer addition, dispersion and dissolution module can automatically adjust the incoming water flow rate to maintain and stabilize it at the set value. At the same time, it can automatically calculate the required amount of polymer based on the set polymer concentration and automatically adjust the feed rate of the screw feeder to maintain a certain ratio with the production water, so that the polymer can be evenly delivered to the high-speed mixing funnel to mix with the production water and maintain a constant polymer concentration. The amount of polymer added and the production water flow rate can be automatically matched and controlled by a PLC program, and the polymer concentration deviation can be eliminated by periodic cumulative metering of the weighing component. The model of the intelligent flow measurement and control instrument is GLZ-II-I50Z1.6, and the model of the weighing component is HT-CWC-4T.

5. The continuous mixing and booster equipment based on flow and pressure control according to claim 4, characterized in that: The formula for calculating the polymer dry powder in the dry powder container is as follows: m=Q max *C max *ρ Where m is the dry powder requirement, Q max C is the maximum daily injection volume of the solution. max ρ represents the maximum polymer concentration, and ρ represents the dry powder density.

6. The continuous mixing and booster equipment based on flow and pressure control according to claim 1, characterized in that: In the booster feeding module, the feeding pump is model D2H375N. The pressure transmitter can be used to detect the outlet pressure of the feeding pump, and the frequency converter can be used to adjust the discharge to maintain a constant outlet pressure of the feeding pump, ensuring stable liquid intake of the high-pressure injection pump. Low-shear sampling ports are set at the front and rear ends of the feeding pump, respectively. A safety valve, pressure transmitter, electromagnetic flow meter, sampling valve and check valve are connected at the rear end of the feeding pump. The flow accuracy of the pressurized feeding module is no less than 1.5 grade, and the viscosity loss rate is ≤2%.

7. The continuous mixing and booster equipment based on flow and pressure control according to claim 1, characterized in that: The multiphase mixing module has left-handed and right-handed mixing units segmented inside the pipes, which causes the liquid to continuously change its flow direction between the left-handed and right-handed mixing units. This not only pushes the central liquid to the periphery, but also pushes the peripheral fluid to the center, producing a good radial mixing effect.

Images