CN114682127A - Curing-tank-free polymer rapid injection allocation system and use method thereof - Google Patents
Curing-tank-free polymer rapid injection allocation system and use method thereof Download PDFInfo
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Abstract
The invention discloses a polymer rapid injection allocation system without a curing tank and a use method thereof, which are characterized in that the whole polymer injection allocation system does not need the curing tank, the injection allocation system mainly comprises a dry powder storage tank, a preliminary dissolving tank, a first delivery pump, a super-strong instant device, a buffer tank, a second delivery pump, a dilution system and an injection storage tank, wherein the super-strong instant device is an overspeed dissolving combination device formed by combining a forced stretching instant unit and a super-gravity mass transfer instant unit in series, the dry powder storage tank, a high-pressure jet mixing device, the first delivery pump, the super-strong instant device, the buffer tank, the second delivery pump, the dilution system and the injection storage tank are connected in sequence to form the polymer rapid injection allocation system without the curing tank, the polymer injection allocation system is simplified, the injection allocation process without the curing tank is realized, the floor area and the weight of the polymer rapid injection allocation system are reduced by more than 80%, the injection allocation flows are closely connected, the manual detection cost is reduced, and the injection allocation efficiency is obviously improved.
Description
Technical Field
The invention relates to a polymer rapid dissolving system, in particular to a polymer rapid injection system without a curing tank and a use method thereof.
Background
Polymer flooding is one of the important methods for improving the recovery ratio in oil field development, and is widely applied to onshore oil fields at home and abroad. And because the offshore oil field is lack of fresh water resources, the mineralization degree of injected water is high, and the calcium and magnesium ion content is high. The traditional partially hydrolyzed polyacrylamide has insufficient salt resistance and low viscosity, and can not meet the requirements of offshore oil fields. The hydrophobic association polymer has a small amount of hydrophobic groups on the main chain, so that the solution has the characteristics of reversible three-dimensional network structure, good shearing dilution property and injectability, strong shearing resistance, good salt resistance, high viscosity and the like, has high viscosity in water with high mineralization degree and high calcium and magnesium ion content, and is suitable for offshore oil fields lacking fresh water resources; for oil reservoirs with high stratum permeability and high crude oil viscosity, the hydrophobic association polymer has more outstanding advantages. The conventional stirring and curing time of the hydrophobic association polymer at normal temperature (20-25 ℃) is long, so that the application of the hydrophobic association polymer in offshore oil fields is greatly restricted. Therefore, aiming at the practical field of offshore oil fields, the research for accelerating the dissolution rate of the hydrophobically associating polymer has important significance on the technology for improving the recovery ratio of the offshore oil fields mainly based on the polymer.
The research on the solubility of the hydrophobically associating polymer has been carried out, and the dissolution time of the hydrophobically associating polymer in the existing method is more than 120 minutes, which means that a large volume and a large number of aging tanks are required to ensure the complete dissolution of the polymer, and the polymer flooding can hardly be realized for offshore platforms with limited space and bearing capacity, especially for the existing small platforms.
The problem that the offshore oil field needs to be solved urgently at present is solved by solving the problem of offshore space due to large injection allocation amount in tertiary oil recovery development. Therefore, a polymer rapid injection system without a curing tank, which has a simple structure and is convenient to operate, is urgently needed, the dissolving speed of the hydrophobically associating polymer is increased, the dissolving time is shortened, and the solution performance meets the field application requirements.
The invention aims to provide a polymer rapid injection allocation system which can realize on-site butt joint, accelerates the hydrophobic association polymer and has no curing tank, and the system has the advantages of simple installation, small occupied area, light weight and large treatment capacity.
Disclosure of Invention
In view of the above, the present invention provides a rapid polymer dispensing system without a curing tank and a method for using the same, wherein the system does not require a curing tank, and the system mainly comprises a dry powder storage tank, a preliminary dissolving tank, a first delivery pump, a super-strong instant device, a buffer tank, a second delivery pump, a dilution system, and a storage tank for injected liquid, wherein the super-strong instant device is formed by serially connecting a super-fast dissolving combination device composed of a forced stretching instant unit and a super-gravity mass transfer instant unit, a dry powder storage tank, a high-pressure jet mixing device, the first delivery pump, the super-strong instant device, the buffer tank, the second delivery pump, the dilution system, and the storage tank for injected liquid, and the system for rapid polymer dispensing without a curing tank is formed, the system simplifies the system for dispensing polymer and realizes the dispensing process without a curing tank, the floor space and the weight of the system are reduced by more than 80%, the injection allocation flows are closely connected, the manual detection cost is reduced, and the injection allocation efficiency is obviously improved.
In order to achieve the purpose, the technical scheme is as follows:
the utility model provides a polymer of no curing jar is joined in marriage fast system of annotating, mainly includes the dry powder holding vessel, preliminary dissolving tank, delivery pump one, superstrong instant device, buffer tank, delivery pump two, dilution system, injected liquid storage tank, the connection of each part is: the dry powder storage tank comprises a polymer dry powder storage tank, a feeding table and an air blower, the polymer dry powder is conveyed to the dissolving tank through the air blower, the primary dissolving tank comprises a dissolving tank stirrer and a high-pressure spraying, dispersing and mixing forced hydration device, primary swelling polymer particles in the primary dissolving tank are conveyed to the super-strong instant dissolving device through a first conveying pump, the super-strong instant dissolving device is an overspeed dissolving combination device formed by combining a forced stretching instant dissolving unit and a super-gravity mass transfer instant dissolving unit in series, polymer solution discharged by the super-strong instant dissolving device enters a cache tank, after the stirrer of the buffer tank is stirred, the mixture is conveyed to a dilution system through a second conveying pump, the dilution water is conveyed to the dilution system through a third conveying pump, and mixing the polymer solution with the polymer solution from the buffer tank, and conveying the diluted polymer solution to an injection liquid storage tank through an injection pump after dilution and mixing to finish the polymer rapid injection allocation system without a curing tank.
Further, the residence time of the polymer dry powder and the water in the primary dissolving tank is less than 3 min.
Furthermore, polymer dry powder particles and injection water in the high-pressure spraying, dispersing, mixing and forced water preparation device in the preliminary dissolving tank respectively enter from different feed inlets, the polymer dry powder particles and the injection water are respectively sprayed out from outlets by a water nozzle and a polymer nozzle, the high-pressure spraying water is intersected with the polymer dry powder particles, and the dry powder particles begin to rapidly expand into swelling particles when meeting water.
Furthermore, the superstrong instant dissolving device consists of a liquid storage cavity, a stretching repeating unit and a mass transfer unit, wherein the stretching unit consists of an upper fixed fluted disc, a movable fluted disc and a lower fixed fluted disc which are provided with a plurality of through holes in sequence from top to bottom, the upper fixed fluted disc and the lower fixed fluted disc are fixed on the shell of the dissolving device or the liquid storage cavity, the surfaces of the upper fixed fluted disc and the lower fixed fluted disc close to the movable fluted disc adopt a short tooth structure and are uniformly meshed with the short tooth structures on the two surfaces of the movable fluted disc, the stretching unit is repeatedly arranged in series from top to bottom, the stretching unit also comprises a transmission shaft and a motor, the transmission shaft is connected with the movable fluted disc, the motor drives the movable fluted disc to rotate, the mass transfer unit is arranged below the stretching unit, polymer molecule chain segments in the mass transfer unit rapidly extend, polymer gel forms a uniform solution after passing through the mass transfer unit, the upper part of the liquid storage cavity is provided with a polymer liquid inlet, and the lower part of the mass transfer unit is provided with a polymer liquid outlet, the movable fluted disc adopts a short tooth structure, the length of the short tooth is 3-5 cm, and the surface of the short tooth is in arc transition design.
Furthermore, the short tooth structures of the movable fluted disc and the lower fixed fluted disc are in a tooth shape, the mass transfer repeating units are from top to bottom, the meshing distances between the upper fixed fluted disc and the movable fluted disc and between the movable fluted disc and the lower fixed fluted disc in each mass transfer unit are gradually reduced from top to bottom, the liquid storage cavity is composed of an upper cover and a shell, the upper cover and the shell are connected and sealed by adopting a connecting bolt, a liquid inlet is formed in the upper part of the upper cover, a liquid outlet is formed in the lower part of the shell, and the transmission shaft is connected with an external upper motor through the liquid storage cavity.
Furthermore, the number of the repeated stretching repeating units is n, and n is more than or equal to 1.
Furthermore, the mass transfer unit is an inner ring and an outer ring which rotate coaxially and reversely, the inner ring is provided with a cavity for accommodating a polymer, a polymer reverse pulling space is reserved between the inner ring and the outer ring, porous materials are arranged on the inner ring and the outer ring, the polymer is pulled through the porous materials of the inner ring and the outer ring on one hand, and on the other hand, a polymer molecular chain segment is rapidly stretched because the polymer is forcibly pulled back and forth in the cavity between the inner ring and the outer ring after rotating reversely, and the polymer stretching unit conveys stretched polymer gel to the cavity of the inner ring of the mass transfer unit through a channel.
Furthermore, the porous material is one or more of sand body particles with different meshes, foamed metal with different apertures, screens with different apertures and cellulose.
Further, the polymer solution flowing out of the side edge of the outer ring is communicated with a liquid outlet of the device through a channel, and the inner ring and the outer ring rotate in opposite directions in a manner that a coaxial reverser is adopted or the inner ring and the outer ring are respectively controlled by different motors.
A method for using a polymer rapid injection allocation system without a curing tank comprises the following steps:
filling the polymer dry powder storage tank in the dry powder storage tank with the polymer dry powder through the feeding table, turning on the blower, so that the polymer dry powder is conveyed from the polymer dry powder storage tank to the primary dissolving tank, the high-pressure spraying, dispersing, mixing and forced hydrating device in the primary dissolving tank mixes and swells the polymer dry powder and water, and is conveyed to the super-strong instant dissolving device through the first conveying pump after being uniformly stirred by the stirrer, the super-strong dissolving device is used for grinding, stretching and mass transferring the polymer to form a more uniform polymer solution which flows into the polymer buffer tank, the diluted water is conveyed to a dilution system by a conveying pump II under the stirring of a buffer tank stirrer, the diluted water is conveyed to the dilution system by a conveying pump III, and mixing the polymer solution with the polymer solution from the buffer tank, and conveying the diluted polymer solution to an injection liquid storage tank through an injection pump after dilution and mixing to finish the rapid preparation of the polymer without a curing tank.
Has the beneficial effects that:
the invention has the beneficial effects that:
the invention provides a curing-tank-free polymer rapid injection allocation system, which mainly aims to: the polymer injection allocation system is simplified, the injection allocation process without a curing tank is realized, the occupied area and the total weight are reduced by more than 80%, the manual detection cost is reduced due to the close connection in the injection allocation process, the super-strong instant device is introduced for combination, the pre-swelling particles formed by premixing are stretched and have super-strong mass transfer, and the preparation time of the high-concentration polymer mother solution is shortened by more than 70%. The invention is a skid-mounted design, the connection among all skid blocks is extremely simple, the cost, the space and the manual supervision are saved, the preparation process is automatic, and the operation can be realized by virtue of low-pressure water and a power supply of a platform.
Drawings
FIG. 1 is a schematic flow diagram of a rapid polymer dispensing system without a curing pot in an embodiment of the present invention;
FIG. 2 is a schematic diagram of a high-pressure spraying, dispersing, mixing and forced hydration device in a polymer rapid injection system without a curing tank in the embodiment of the invention;
FIG. 3 is a schematic structural diagram of a polymer super-fast dissolving device in a rapid polymer dispensing system without a curing tank according to an embodiment of the present invention;
FIG. 4 is a top view of a toothed plate of a polymer ultra-strong instant dissolution device in a rapid polymer injection system without a curing tank according to an embodiment of the present invention;
fig. 5 is an enlarged cross-sectional view of the short tooth structure of the upper fixed tooth disk, the movable tooth disk and the lower fixed tooth disk of the polymer super-strong instant dissolving device in the rapid polymer injection system without a curing tank in the embodiment of the present invention;
fig. 6 is a top view of a mass transfer unit of a polymer ultra-fast dissolving device in a polymer fast dispensing system without a curing tank according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
In the embodiment, the technical scheme that the stretching unit is formed by connecting 4 stretching repeating units in series is mainly adopted, that is, the number n of the repeating units is 4, and the principles of the stretching repeating units in other numbers are similar, so that the description is omitted.
As shown in fig. 1, the system for rapidly dispensing and injecting polymer without a curing tank mainly includes a dry powder storage tank 1, a preliminary dissolving tank 6, a first delivery pump 7, a super-strong instant device 8, a buffer tank 9, a second delivery pump 12, a dilution system 14, and an injection storage tank 16, and the connection relationship of each part is as follows: the dry powder storage tank 1 comprises a polymer dry powder storage tank 1, a feeding platform 2 and an air blower 3, the polymer dry powder is conveyed to a dissolving tank 6 through the air blower 3, the preliminary dissolving tank 6 comprises a preliminary dissolving tank stirrer 4, a high-pressure jet dispersion mixing forced hydration device 5, preliminary swelling polymer particles in the preliminary dissolving tank 6 are conveyed to a super-strong instant device 8 through a conveying pump I7, the super-strong instant device 8 is a super-speed dissolving combination device formed by combining a forced stretching instant unit and a super-gravity mass transfer instant unit in series, polymer solution discharged by the super-strong instant device 8 enters a buffer tank 9, after being stirred by a stirrer 10 of the buffer tank 9, the polymer solution is conveyed to a dilution system 14 through a conveying pump II 12, dilution water 11 is conveyed to the dilution system 14 through a conveying pump III 13 and is mixed with the polymer solution from the buffer tank, the diluted and mixed polymer solution is conveyed to an injection liquid storage tank 16 through an injection pump 15, and (4) finishing the polymer rapid dispensing system without a curing tank.
When in use, the use method of the polymer rapid injection allocation system without the curing tank comprises the following steps:
filling polymer dry powder in a polymer dry powder storage tank 1 in a dry powder storage tank 1 through a feeding table 2, starting an air blower 3 to convey the polymer dry powder from the polymer dry powder storage tank 1 to a dissolving tank 4, mixing and swelling the polymer dry powder and water through a high-pressure spraying, dispersing, mixing and forced hydrating device 5 in the primary dissolving tank 4, uniformly stirring the polymer dry powder through a stirrer 4, conveying the polymer dry powder to a super-strong instant dissolving device 8 through a conveying pump I7, grinding and stretching mass transfer of the polymer by the super-strong dissolving device 8 to form a uniform polymer solution, then flowing the uniform polymer solution into a polymer buffer tank 9, conveying the polymer solution to a dilution system 14 through a conveying pump II 12 under the stirring of a buffer tank stirrer 10, conveying dilution water 11 to a dilution system 14 through a conveying pump III 13 by adopting a CBY stirrer to be mixed with the polymer solution from the buffer tank 9, conveying the diluted polymer solution to an injection liquid storage tank 16 through an injection pump 15 after dilution and mixing, the polymer formulation without curing tank was completed quickly.
Since other devices in the polymer rapid dispensing system without the curing tank are common devices, they are not described herein again, and the high-pressure spraying, dispersing, mixing, forced hydration device 5 and the super-strong instant device 8 in the preliminary dissolving tank 4 are described in detail.
As can be seen from FIG. 2, the diagram is a high-pressure spraying, dispersing, mixing and forced hydration device 5, wherein 51 is a polymer dry powder feeding channel, 52 and 54 are preparation water feeding channels, 53 and 55 are preparation water nozzles, the horizontal distance between the two dissolution water nozzles is 50mm, the vertical distance (based on the dissolution water feeding channel) is 150mm, the intersection angle of the liquid flows of the nozzles is 10 degrees, a double-layer water nozzle is adopted, the spraying pressure is 0.5MPa, and the intersection volume of water and powder can reach 1.98 x 107mm2。
The polymer dry powder enters from a polymer dry powder feeding channel 51, the preparation water respectively enters from 52 and 54, and the dissolution water is sprayed through nozzles 53 and 55 to impact with the polymer dry powder mutually and quickly disperse and mix; the liquid after dispersion and mixing is temporarily stored in the primary dissolving tank and is conveyed to the super-strong instant dissolving device 8 along with the conveying pump I7.
As shown in fig. 3, the ultra-strong instant dissolving device 8 comprises a liquid storage cavity 820, a stretching repeating unit and a mass transfer unit, wherein a single stretching unit sequentially comprises an upper fixed fluted disc 85, a movable fluted disc 86 and a lower fixed fluted disc 87 which are provided with a plurality of through holes 815 from top to bottom, the upper fixed fluted disc 85 and the lower fixed fluted disc 87 are fixed on the liquid storage cavity 820 or fixed on the device shell 84, the surfaces of the upper fixed fluted disc 85 and the lower fixed fluted disc 87, which are close to the movable fluted disc 86, adopt a short tooth 814 structure and are uniformly meshed with the short tooth 814 structures on the two surfaces of the movable fluted disc 86, the movable fluted disc 86 is connected with a transmission shaft 82 and provides rotation power through a motor 81, the stretching units are connected in series from top to bottom, the movable fluted discs 86 are connected with the transmission shaft 82 and provide rotation power through the motor 81, the stretching unit is located in the liquid storage cavity 820, a liquid inlet 83 is arranged on the upper portion of the liquid storage cavity 820, and a liquid outlet 813 is arranged on the lower portion. A mass transfer unit is arranged below the drawing unit, the mass transfer unit is an inner ring and an outer ring which rotate coaxially and reversely, the inner ring 811 is provided with a cavity 89 for containing a polymer, a polymer reverse drawing space 88 is reserved between the inner ring 811 and the outer ring 810, porous materials are arranged on the inner ring 811 and the outer ring 810, the polymer is drawn through the porous materials of the inner ring 811 and the outer ring 810 on one hand, on the other hand, the polymer is forced to draw back and forth in the cavity 88 between the inner ring 811 and the outer ring 810 due to reverse rotation, polymer molecular chain segments rapidly stretch, the polymer drawing unit conveys the drawn polymer gel to the cavity 89 of the inner ring of the mass transfer unit through a channel, the inner ring 811 and the outer ring 810 rotate reversely, the reverse rotation is realized by respectively controlling the inner ring and the outer ring by two different motors or utilizing a coaxial reverser, not shown in figure 3, the polymer solution passing through the mass transfer unit flows out from the side edge of the outer ring 810 of the mass transfer unit, is connected with the liquid outlet 813 through a passage 812.
When the device is used, the stretching unit motor 81 is started, the mass transfer unit motor or the coaxial reverser is started, the stretching unit movable fluted disc 86 starts to rotate, the inner ring 811 and the outer ring 810 of the mass transfer unit reversely rotate, the mixed liquid of the polymer dry powder and the water is injected from the liquid inlet 83, the water solution of the polymer which is not completely dissolved enters the liquid storage cavity 820 from the liquid inlet, the polymer sequentially passes through the stretching unit to be stretched, the water solution of the polymer sequentially enters the upper fixed fluted disc 85 and the movable fluted disc 86 from the through hole 815 on the upper fixed fluted disc 85 and then enters the lower fixed fluted disc 87 from the driven fluted disc 86, because the upper fixed fluted disc 85, the movable fluted disc 86 and the lower fixed fluted disc 87 adopt the short-tooth 814 structure, the upper parts of the short-tooth structures of the movable fluted disc 86 and the lower fixed fluted disc 87 are trapezoidal, the meshing distances between the upper fixed fluted disc 85 and the movable fluted disc 86 and the lower fixed fluted disc 87 in each mass transfer unit are gradually reduced from top to bottom, and the movable fluted disc 86 runs at a certain rotating speed, the swelling particles in the aqueous solution of the polymer are rolled and unfolded by the short teeth 814 structure to form swelling particles with smaller particle size, the treated swelling particles enter the inner ring cavity 89 of the mass transfer unit through the connecting channel, under the drive of the rotation of the inner ring 811, the polymer swelling particles are thrown out in the radial direction by the centrifugal force, under centrifugal force, through the porous material disposed on the inner ring 811, the counter-rotating outer ring 810 is encountered in the space 88 between the inner ring 811 and the outer ring 810, after the outer ring 810 is rotated in the opposite direction, it is forced to pull back and forth, the polymer molecule chain segments are rapidly stretched, and continues to pass through the porous material provided on the outer ring 810 by the rotational centrifugal force of the outer ring 810, the liquid is discharged from the side of the outer ring 810, and is connected with the liquid outlet of the device through a channel 812, and the liquid is discharged from the device, so that the dissolved uniform polymer solution is obtained.
Referring to fig. 4, which is a top view of the movable gear plate of the super-fast dissolving apparatus 8, the movable gear plate 86 is driven by the transmission shaft 82 to operate, and the swollen particles of the polymer are crushed and expanded by the short teeth 814 structure to form swollen particles with smaller particle size, which flow out from the through holes 815.
Fig. 5 is an enlarged cross-sectional view of the short tooth structure of the upper fixed tooth disk, the movable tooth disk and the lower fixed tooth disk of the super-strong instant dissolving device 8.
One situation is: the meshing intervals between the upper fixed teeth 816 and the movable teeth 817 and between the movable teeth 817 and the lower fixed teeth 818 of each stretching repeating unit are consistent, namely the meshing intervals between the upper fixed toothed disc, the movable toothed disc and the lower fixed toothed disc of each stretching repeating unit are the same. The stretching unit is formed by connecting identical stretching repeating units in series.
That is, the short tooth structure of the movable tooth disk and the lower fixed tooth disk is trapezoidal: the upper fixed teeth 816 of the upper fixed toothed disc 85 and the movable teeth 817 of the movable toothed disc 86 form a first-level instant structure, the upper fixed teeth 816 and the movable teeth 817 are meshed with each other and have a meshing interval 819, the inlet of the upper portion of the meshing interval 819 is 2.45mm, the outlet of the lower portion of the meshing interval 819 is 0.45mm, and the depth of the 0.45mm is 5 mm. And the moving teeth 817 of the moving toothed disc 86 and the lower fixed toothed disc 818 of the lower fixed toothed disc 87 form a secondary instant structure, the moving teeth 817 and the lower fixed teeth 818 are meshed with each other and have a meshing interval 819, the inlet of the upper part of the meshing interval 819 is 1.32mm, the outlet of the lower part of the meshing interval 819 is 0.15mm, and the depth of the 0.15mm is 5 mm. Through the bipolar instant structure, the swelling particles can be forcibly stretched to obtain the swelling particles with smaller particle sizes, the effect is better than that of only one fixed fluted disc and one movable fluted disc, and polymer gel becomes the swelling particles with tiny particle sizes through 4 stretching repeating units which are arranged in series, thereby laying the foundation for the subsequent mass transfer unit.
Another case is: the short tooth structures of the upper fixed tooth disc, the movable tooth disc and the lower fixed tooth disc are all rectangular, the upper width and the lower width of the short tooth structures are consistent, namely the meshing intervals of all the repeating units are different, but the meshing intervals of the single stretching repeating unit are the same from top to bottom.
The upper fixed teeth 816 and the movable teeth 817 are meshed with each other and have meshing intervals 819, the movable teeth 817 and the lower fixed teeth 818 are meshed with each other and have meshing intervals 819, the meshing intervals 819 can be equal in a single stretching repeating unit, namely the short tooth structures of the movable toothed disc and the lower fixed toothed disc are rectangular, the meshing intervals 819 in the single stretching repeating unit are equal, and therefore the meshing interval 819 of the first stretching repeating unit is 2.45mm and the depth is 5mm, and the meshing intervals 819 of the second stretching repeating unit, the third stretching repeating unit and the fourth stretching repeating unit are sequentially reduced to 0.15mm and the depth is 5 mm. In this way, the polymer gel becomes swollen particles with a small particle size, which lays the foundation for the subsequent mass transfer unit.
Fig. 6 is a top view of a mass transfer unit of the ultra-strong instant dissolving device 8, the mass transfer unit is composed of a mass transfer ring and is divided into an inner ring 811 and an outer ring 810, a cavity 89 for accommodating polymer in the inner ring, a space 88 between the inner ring and the outer ring, the outer ring and the inner ring rotate in opposite directions, and porous materials are arranged in the inner ring and the outer ring, so that when polymer gel passes through the inner ring and the outer ring, the polymer gel is stretched by the porous materials to form a uniform polymer solution more quickly.
The concrete mode is as follows: the swollen particles treated by the stretching unit enter an inner ring cavity 89 of the mass transfer unit through a connecting channel, the polymer swollen particles are thrown out in the radial direction by centrifugal force under the drive of the rotation of an inner ring 811, pass through a porous material arranged on the inner ring 811 under the action of the centrifugal force, meet an outer ring 810 rotating in the opposite direction in a space 88 between the inner ring 811 and the outer ring 810, and are forced to pull back and forth after the outer ring 810 rotates in the opposite direction, polymer molecular chain segments rapidly extend, and continue to pass through the porous material arranged on the outer ring 810 by utilizing the centrifugal force of the rotation of the outer ring, liquid is discharged from the side surface of the outer ring 810, the discharged liquid is connected with a liquid outlet 813 of the device through a channel 812, and the device is discharged, so that a 'uniform' polymer solution after dissolution is obtained.
The super-strong instant device 8 has super-strong pulling effect on the polymer swelling particles, the polymer swelling particles gradually become a gelatinous film, and polymer molecular chain segments are rapidly separated under the washing of high-pressure water to rapidly form a uniform polymer solution.
The polymer is milled and stretched by the super-strong dissolving device 8 for mass transfer, a relatively uniform polymer solution is formed and flows into a polymer buffer tank 9, the polymer solution is conveyed to a dilution system 14 through a second conveying pump 12 under the stirring of a buffer tank stirrer 10, the buffer tank stirrer adopts a CBY stirrer, a third conveying pump 13 conveys dilution water 11 to the dilution system 14 and is mixed with the polymer solution from the buffer tank 9, the diluted polymer solution is conveyed to an injection liquid storage tank 16 through an injection pump 15 after dilution and mixing, and the rapid preparation of the polymer without a curing tank is completed.
The invention adopts the super-strong instant device, which can rapidly dissolve the polymer into uniform mother liquor, can realize the full-flow polymer preparation without a curing tank, is equivalent to the curing effect of the super-strong instant device replacing the curing tank, can omit the curing tank in a preparation and injection system, and the preparation and injection system of the super-strong instant device needs the curing tank.
For example, in the prior art, a polymer efficient preparation device in CN110860250A and an assembly method thereof are adopted, and the technical scheme is as follows:
discloses a polymer high-efficiency preparation device and an assembly method thereof, comprising an input manifold, a tubular dissolving device for forcibly drawing a polymer, an output manifold and a multistage mass transfer polymer deep instant device; the tubular dissolving device for forcibly drawing the polymer comprises a motor, an upper end seat, a tubular dissolving shell, a lower end seat, a transmission shaft axially arranged in the tubular dissolving shell and a plurality of dissolving units arranged in the tubular dissolving shell in parallel; the motor is axially arranged on the upper end seat and is in transmission connection with the transmission shaft; the input manifold and the output manifold are both provided with one end as a closed end and the other end as an open end; the opening end of the output manifold is communicated with a multistage mass transfer polymer deepening and instant dissolving device, and a polymer outlet is arranged on the multistage mass transfer polymer deepening and instant dissolving device. The polymer flooding system is simple to install, large in handling capacity, light in weight, small in occupied area, capable of effectively accelerating polymer dissolution and capable of being used in the polymer flooding technology of an offshore platform.
The concrete structure is described in CN110860250A, because the polymer high-efficiency preparation device described in CN110860250A adopts a forced stretching and dissolving device and a multi-stage mass transfer device, but the multi-stage mass transfer device is essentially different from the present application, the mass transfer ring can not rotate, the part of the mass transfer ring close to the stretching movable fluted disc can rotate in the opposite direction to that of the movable fluted disc, the rotating directions of the outer ring and the inner ring of the mass transfer ring are opposite, all the adjacent mass transfer rings rotate in opposite directions, and the stretching unit and the mass transfer unit are arranged together, so that the polymer particles brought out by rotation in the stretching unit can rapidly and uniformly dissolve the polymer under the pulling action of the reverse rotation of the mass transfer ring, while the polymer high-efficiency preparation device described in the prior art CN110860250A, the stretching device is separated from the mass transfer device, can not play a better synergistic action, and the mass transfer ring can not rotate, the invention aims to solve the problem of slow dissolving speed in the prior art, thereby saving the curing tank, playing an excellent effect in the injection allocation process that a plurality of dissolving tanks cannot be arranged on an offshore platform or the like or the curing tank, and having great popularization value.
In summary, the invention discloses a rapid polymer injection allocation system without a curing tank and a using method thereof, which is characterized in that the whole polymer injection allocation system does not need a curing tank, the injection allocation system mainly comprises a dry powder storage tank, a preliminary dissolving tank, a first delivery pump, a super-strong instant device, a buffer tank, a second delivery pump, a dilution system and an injection storage tank, wherein the super-strong instant device is an overspeed dissolving combination device formed by combining a forced stretching instant unit and a super-gravity mass transfer instant unit in series, the dry powder storage tank, a high-pressure jet mixing device, the first delivery pump, the super-strong instant device, the buffer tank, the second delivery pump, the dilution system and the injection storage tank are connected in sequence to form the rapid polymer injection allocation system without a curing tank, the system simplifies the polymer injection allocation system and realizes the injection allocation process without a curing tank, the occupied area and the weight of the system are reduced by more than 80%, and the injection allocation flows are closely connected, the manual detection cost is reduced, and the injection allocation efficiency is obviously improved.
Although the present invention has been described with reference to the above embodiments, it should be understood that the present invention is not limited to the above embodiments, and those skilled in the art can make various changes and modifications without departing from the scope of the present invention.
Claims (10)
1. The utility model provides a polymer of no curing jar is joined in marriage fast and is annotated system, its characterized in that, join in marriage notes system and mainly include dry powder holding vessel, preliminary dissolving tank, delivery pump one, superstrong instant device, buffer tank, delivery pump two, dilution system, injected liquid storage tank, the connection relation of each part is: the dry powder storage tank comprises a polymer dry powder storage tank, a feeding table and an air blower, the polymer dry powder is conveyed to a preliminary dissolving tank through the air blower, the preliminary dissolving tank comprises a preliminary dissolving tank stirrer and a high-pressure spraying, dispersing and mixing forced hydration device, preliminary swelling polymer particles in the preliminary dissolving tank are conveyed to the super-strong instant dissolving device through a first conveying pump, the super-strong instant dissolving device is an overspeed dissolving combination device formed by serially combining a forced stretching instant dissolving unit and a super-gravity mass transfer instant dissolving unit, polymer solution discharged by the super-strong instant dissolving device enters a cache tank, after the stirrer of the buffer tank is stirred, the mixed solution is conveyed to a dilution system through a second conveying pump, the diluted water is conveyed to the dilution system through a third conveying pump, and mixing the polymer solution with the polymer solution from the buffer tank, and conveying the diluted polymer solution to an injection liquid storage tank through an injection pump after dilution and mixing to finish the polymer rapid injection allocation system without a curing tank.
2. The system of claim 1, wherein the residence time of the polymer dry powder and water in the primary dissolution tank is less than 3 minutes.
3. The system for rapidly dispensing and injecting polymer without a curing tank as claimed in claim 1, wherein the high pressure jet dispersion mixing forcing device in the preliminary dissolving tank is provided with polymer dry powder particles and injection water respectively entering from different inlet openings and respectively spraying out from the outlet openings by using a water nozzle and a polymer nozzle, the high pressure jet water intersects with the polymer dry powder particles, and the dry powder particles begin to rapidly expand into swelling particles when encountering water.
4. The system as claimed in claim 1, wherein the ultra-strong instant dissolution device comprises a liquid storage chamber, a stretching repeating unit and a mass transfer unit, the stretching unit comprises an upper fixed gear, a movable gear and a lower fixed gear, all of which have a plurality of through holes, the upper fixed gear and the lower fixed gear are fixed on the shell of the dissolution device or the liquid storage chamber, the upper fixed gear and the lower fixed gear adopt a short-tooth structure on the surface close to the movable gear and are uniformly engaged with the short-tooth structures on the two surfaces of the movable gear, the stretching unit is repeatedly arranged in series from top to bottom, the stretching unit further comprises a transmission shaft and a motor, the transmission shaft is connected with the movable gear, the motor drives the movable gear to rotate, the mass transfer unit is arranged below the stretching unit, the polymer molecular chain segments rapidly stretch in the mass transfer unit, and the polymer gel forms a "uniform" solution after passing through the mass transfer unit, the upper part of the liquid storage cavity is provided with a polymer liquid inlet, the lower part of the mass transfer unit is provided with a polymer liquid outlet, the movable fluted disc adopts a short tooth structure, the length of the short tooth is 3-5 cm, and the surface of the short tooth is in a circular arc transition design.
5. The system as claimed in claim 3, wherein the short teeth of the movable and lower fixed gear discs are in a tooth shape, the mass transfer repeat units are from top to bottom, the engagement distance between the upper fixed gear disc and the movable gear disc and between the movable and lower fixed gear discs in each mass transfer unit gradually decreases from top to bottom, the liquid storage cavity is composed of an upper cover and a housing, the upper cover and the housing are connected and sealed by connecting bolts, the liquid inlet is arranged at the upper part of the upper cover, the liquid outlet is arranged at the lower part of the housing, and the transmission shaft is connected with the external upper motor through the liquid storage cavity.
6. The system of claim 3, wherein the number of repetitions of said elongated repeating unit is n, n ≧ 1.
7. The system as claimed in claim 3, wherein the mass transfer unit is an inner ring and an outer ring rotating coaxially and reversely, the inner ring has a cavity for holding the polymer, a space for pulling the polymer reversely is left between the inner ring and the outer ring, porous materials are arranged on the inner ring and the outer ring, the polymer is stretched by the porous materials of the inner ring and the outer ring on one hand, and on the other hand, polymer molecular chain segments are rapidly stretched by being forced to pull back and forth in the cavity between the inner ring and the outer ring due to the reverse rotation, and the polymer stretching unit conveys the stretched polymer gel to the cavity of the inner ring of the mass transfer unit through the channel.
8. The system of claim 3, wherein the porous material is one or more of sand particles with different mesh sizes, foamed metal with different pore sizes, screens with different pore sizes, and cellulose.
9. The system for rapidly dispensing and injecting polymer without a curing tank as claimed in claim 3, wherein the polymer solution flowing out from the side of the outer ring is communicated with the liquid outlet of the device through a channel, and the inner ring and the outer ring rotate in opposite directions by means of a coaxial inverter or by means of the inner ring and the outer ring respectively controlled by different motors.
10. A method for using a polymer quick dispensing system without a curing tank is characterized by comprising the following steps:
filling the polymer dry powder storage tank in the dry powder storage tank with the polymer dry powder through the feeding table, turning on the blower, so that the polymer dry powder is conveyed from the polymer dry powder storage tank to the primary dissolving tank, the high-pressure spraying, dispersing, mixing and forced hydrating device in the primary dissolving tank mixes and swells the polymer dry powder and water, and is conveyed to the super-strong instant dissolving device through the first conveying pump after being uniformly stirred by the stirrer, the super-strong dissolving device is used for grinding, stretching and mass transferring the polymer to form a more uniform polymer solution which flows into the polymer buffer tank, the diluted water is conveyed to a dilution system by a conveying pump II under the stirring of a buffer tank stirrer, the diluted water is conveyed to the dilution system by a conveying pump III, and mixing the polymer solution with the polymer solution from the buffer tank, and conveying the diluted polymer solution to an injection liquid storage tank through an injection pump after dilution and mixing to finish the rapid preparation of the polymer without a curing tank.
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Cited By (1)
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