Self-cleaning anti-blocking double-cavity uniform-temperature heating oil well horizontal oil conveying device

Abstract

The invention relates to a self-cleaning anti-blocking double-cavity uniform-temperature heating oil well horizontal oil conveying device, which adopts a uniform-temperature heating assembly to synchronously heat an inner oil inlet pipe assembly and an outer oil inlet pipe assembly, eliminates the problem that the heating temperature of an inner pipe and an outer pipe is not uniform in the existing electromagnetic induction heating, and eliminates the problem that the inner wall of the oil conveying pipe is easy to burn and carbonize to form oil dirt; the oil inlet speed increaser, the inner pipe oil outlet rotational flow speed increaser and the left vortex speed increaser are additionally arranged in the oil conveying pipeline, so that crude oil is accelerated for three times in the conveying pipeline, silt is driven to be synchronously conveyed along with the crude oil in a rotating vortex mode, and the problem that in the prior art, silt in the crude oil is prone to sedimentation, and blockage is caused is solved. The viscosity of crude oil is reduced by conducting uniform-temperature heating on the oil well oil conveying pipe, sediment in the crude oil is prevented by accelerating the crude oil and changing the flowing mode, oil way blocking is eliminated, the self-cleaning anti-blocking double-cavity uniform-temperature heating smooth oil conveying function is achieved, the problems existing in the prior art can be solved, and shutdown maintenance is not needed.

Description

Technical Field

[0001] This invention relates to the field of oil well transportation equipment technology, and in particular to an oil well transportation device that heats the oil well pipeline to reduce the viscosity of crude oil, prevents sand and mud in the crude oil from settling and clogging the pipeline, and ensures the transportation of crude oil. Background Technology

[0002] Chinese patent CN201820955487.2 discloses a sand-blocking type explosion-proof electromagnetic heater for petroleum. Its cylindrical tube body consists of a tube with flanges at both ends, a tail-end connecting cap, an oil outlet pipe connector, an anti-dry-burning temperature control box, and 1-2 sand removal and drainage pipe connectors. Inside the cylindrical tube body is an electromagnetic rod core with an outer sheath connected to an explosion-proof sealed junction box. An electromagnetic heating rod is fitted inside the outer sheath. The electromagnetic heating rod is composed of an inner steel tube with insulated electromagnetic wire wound around it. The head of the inner steel tube has an oil inlet pipe connecting flange, and the tail is connected to the outer sheath and the outer sheath sealing flange cover. A spiral guide vane mandrel for sand prevention and sedimentation is inserted inside the inner steel tube. This technical solution has the following defects: First, the electromagnetic induction heating coil generates localized ultra-high temperatures in the inner tube, failing to provide simultaneous and equivalent heating to the outer tube. The outer tube can only indirectly conduct heat through hot air, and its heat absorption is limited. This electric heating structure causes the crude oil near the inner wall of the inner tube to coke and carbonize due to high temperatures, forming a gradually thickening layer of coked oil on the inner tube wall. During use, this not only leads to a significant increase in the proportion of denatured crude oil, directly degrading its quality, but also forms a viscous carbonized insulating layer on the inner tube wall, whose thickness increases over time, gradually reducing the heating effect on the crude oil inside the tube. As crude oil flows into the outer tube, its temperature gradually decreases, its viscosity increases rapidly, and its fluidity decreases rapidly. Especially in extremely cold winters, when the outside temperature is below -5 degrees Celsius, it becomes difficult to dispense oil normally, requiring an increase in current to raise the electromagnetic induction heating temperature. This further exacerbates the carbonization of the crude oil, reducing its quality.

[0003] Secondly, a spiral guide vane mandrel for preventing sand sedimentation was added to the inner tube. Its design aims to use the initial kinetic energy of the crude oil to drive its rotation, thereby preventing sediment sedimentation. Although the instruction manual describes it as a rotating, living spiral guide vane mandrel that can be extracted from the inner cavity of the electromagnetic rod's inner core steel tube, actual testing revealed that due to its heavy weight and contact with the inner tube, it could not rotate using the crude oil input flow pressure. Furthermore, because the crude oil contained sediment, and given the limited flow velocity and pressure, the spiral guide vane mandrel placed in the inner tube could not rotate. Therefore, the spiral guide vane would generate progressively increasing axial flow resistance to the flowing crude oil, causing the flow velocity to continuously decrease. This facilitates the gradual sedimentation of sediment. As the amount of sediment increases, the rotating, living spiral guide vane mandrel essentially becomes a fixed spiral guide vane mandrel in the inner tube. It not only generates significant resistance to crude oil flow but also promotes the sedimentation and accumulation of sediment within the crude oil.

[0004] Third, in this scheme, although guide spiral blades are welded on the outer wall of the outer pipe, the viscosity of the crude oil will increase because the flow rate and pressure of the crude oil are limited and the outer pipe cannot be uniformly heated. In addition, the guide spiral blades will also generate secondary resistance to the axial flow of the crude oil, which will also help the sediment in the crude oil to settle here. The amount of sediment will increase with the increase of working time, which will be reflected in the gradual decrease of crude oil output flow and the gradual decrease of electric heating energy consumption utilization rate.

[0005] This patented solution cannot achieve its intended purpose. To enable it to transport oil normally, it is necessary to periodically shut down the machine for replacement and maintenance. This process is not only labor-intensive, but also very difficult. It requires disassembling all components, removing the stubborn oil sludge caused by high-viscosity coking carbon deposits that adhere to the inner wall of the inner tube, and removing the solidified mud, sand, and oil stains that accumulate between the spiral guide vane core and the outer wall of the outer tube. After cleaning, the components must be reassembled. This process is difficult, time-consuming, and costly. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies and address the problems of uneven heating temperatures in the inner and outer pipes of existing oil well electric heaters, the easy formation of a layer of coked and carbonized oil sludge on the inner wall of the oil pipeline, and the easy deposition of silt and sand in the crude oil in the pipeline causing blockages, the present invention aims to provide a self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device, which can solve one of the problems existing in the prior art. It can effectively and synchronously heat the inner and outer pipes of the oil pipeline, eliminating the coking and carbon deposits that form on the inner wall of the inner pipe due to the high temperature of crude oil caused by electromagnetic heating. It prevents pipeline blockage and reduced thermal efficiency caused by sediment deposition and thickening of coking and carbon deposits on the inner wall of the electrically heated oil pipeline. The uniform heating component not only has high heating efficiency, but also ensures uniform heating of the inner and outer pipes of the oil pipeline. The uniform heating component reduces the viscosity of crude oil, ensures the stability of the oil viscosity, and reduces the oil transportation resistance. It can achieve self-cleaning of the inner and outer pipes of the electrically heated oil pipeline without the need for additional external power. It will not form a coking and carbon deposit layer on the inner wall of the oil pipeline, and the oil passage cross-section of the oil pipeline will not shrink due to the thickening of the coking and carbon deposit layer and sediment deposition. It can effectively prevent the blockage of the oil pipeline and eliminate the need for downtime maintenance.

[0007] The technical solution adopted in this invention is as follows: The self-cleaning, anti-clogging, dual-chamber, uniformly heated horizontal oil well pumping device includes an inner inlet pipe assembly, an electric heating assembly, and an outer inlet pipe assembly. The inner and outer inlet pipe assemblies are coaxially arranged. It also includes an inlet speed increaser, an inner pipe outlet vortex speed increaser, a left support ring, a left vortex speed increaser, a left end cap, a right end sealing component, and an outlet pipe. The left support ring is sealed and fixed to the left end of both the inner and outer inlet pipe assemblies. An inlet speed increaser is located at the inlet end of the inner inlet pipe assembly, which allows crude oil flowing in a straight line from the wellhead outlet pipe into the inner inlet pipe assembly. The flow velocity is increased and the flow changes to a rotating mode to the left within the pipe; an inner pipe oil outlet vortex speed-up device is provided at the oil outlet end of the inner oil inlet pipe assembly; the electric heating component is a uniform temperature heating component, which is located between the inner oil inlet pipe assembly and the outer oil inlet pipe assembly; the left vortex speed-up device is sealed and installed at the left end of the outer oil inlet pipe assembly; the left end cap is sealed and installed at the left end of the left vortex speed-up device; the left end cap, the left vortex speed-up device, the left support ring, and the inner pipe oil outlet vortex speed-up device form a vortex cavity; the inner pipe oil outlet vortex speed-up device enables the crude oil input from the inner oil inlet pipe assembly to flow in a rotating mode to the left. A vortex is formed within the vortex chamber, further increasing the crude oil flow rate. Simultaneously, it forces sediment in the crude oil to vortex synchronously with the rotating crude oil, preventing sediment deposition. The high-speed vortex-shaped crude oil is directionally accelerated by the left vortex speed-up device and enters the external inlet pipe assembly. The rotating crude oil, accelerated by the left vortex speed-up device, is rapidly transported towards the outlet pipe along the spiral channel within the external inlet pipe assembly. Sediment in the crude oil will not settle and accumulate in the external inlet pipe assembly, preventing pipe blockage and ensuring smooth crude oil output throughout the entire transport path. The right-end sealing component is installed on the external inlet pipe assembly. At the right end of the component, the oil outlet pipe is located above the right end of the external oil inlet pipe assembly and communicates with the oil cavity of the external oil inlet pipe assembly. The uniform heating component can simultaneously heat the internal oil inlet pipe assembly and the external oil inlet pipe assembly, ensuring that the crude oil does not coke or change its properties during the heating process. The crude oil is uniformly heated by the uniform heating component in the entire conveying channel, ensuring that the crude oil viscosity is stable and that it is in a state of good fluidity. Through high-speed rotation, the crude oil is prevented from accumulating sediment and blocking the pipeline, ensuring that the crude oil is output smoothly throughout the entire oil transportation path.

[0008] Furthermore, the external oil inlet pipe assembly includes an intermediate pipe, an outer oil pipe, and a spiral guide plate. The lower end of the spiral guide plate is fixed to the outer circular surface of the intermediate pipe, and the upper end of the spiral guide plate mates with the inner hole of the outer oil pipe, forming an independent spiral guide groove between the outer oil pipe and the intermediate pipe. The cross-sectional area of ​​the spiral guide groove is set according to the flow rate of the wellhead injection pipe, and its pitch is determined according to the sand content and viscosity of the crude oil. The spiral guide plate is both a dynamic guide groove for crude oil and a heat dissipation plate. Together with the intermediate pipe, it forms a three-dimensional heat dissipation component, which simultaneously increases the temperature of the outer layer of crude oil and the outer oil pipe.

[0009] Furthermore, the uniform heating assembly includes two or more coaxially spaced heat-resistant positioning plates, carbon fiber cables, quartz tubes, and solid heat conductors. A central hole, an outer ring hole group, and an inner ring hole group are coaxially arranged on the heat-resistant positioning plates. Both the outer and inner ring hole groups consist of several positioning holes. The positioning holes in the outer ring hole group are evenly distributed on the same circumference, while the positioning holes in the inner ring hole group are distributed on another circumference. The quartz tubes are fitted into the positioning holes on the coaxially spaced heat-resistant positioning plates. A carbon fiber cable is fitted into each quartz tube. The inner oil inlet pipe assembly is fitted into the central hole of the heat-resistant positioning plate, and the inner hole of the middle tube in the outer oil inlet pipe assembly is fitted onto the outer circumference of the heat-resistant positioning plate. The inner cavity enclosed by the inner oil inlet pipe assembly and the middle tube is filled with a solid heat conductor, which can synchronously and uniformly heat the inner and outer oil inlet pipe assemblies.

[0010] Furthermore, a reinforcing hole group is provided between the outer and inner hole groups, and a quartz tube is installed in the positioning hole of the reinforcing hole group, which is more conducive to the uniform temperature of the heating component.

[0011] Furthermore, in the uniform heating assembly, carbon fiber cables pass through multiple quartz tubes in sequence, with both ends of the carbon fiber cables located at the right end.

[0012] Furthermore, sand injection holes are also provided on the heat-resistant positioning plate.

[0013] Furthermore, the heat-resistant positioning plate is made of mica, and the solid heat conductor is quartz sand or magnesium powder.

[0014] Furthermore, the oil inlet speed increaser includes an end cover and a speed-boosting steering structure, with the speed-boosting steering structure mounted on the end cover.

[0015] Furthermore, the speed-up steering structure is an oblique groove provided on the circumferential side of the end cover, and the angle between the oblique groove and the end face of the end cover is 10 degrees to 45 degrees.

[0016] Furthermore, the speed-up steering structure is a swirling hole set on the end face of the end cap, and the included angle between the swirling hole and the end face of the end cap is 10 degrees to 45 degrees.

[0017] Furthermore, the inclined groove or swirl hole has a variable cross-sectional shape, with the cross-sectional area of ​​the oil inlet end being larger than that of the oil outlet end.

[0018] Furthermore, the end cap has a stepped structure including a cap and a positioning core. The oil outlet cross-sectional area of ​​the speed-up steering structure is smaller than the cross-sectional area of ​​the crude oil transport pipe, and the oil outlet cross-sectional area of ​​the speed-up steering structure is determined by the acceleration rate. The angle between the speed-up steering structure and the end face of the end cap is determined according to the rotation speed.

[0019] Furthermore, the inner tube oil swirl speed increaser includes a body and an anti-settling speed increase structure, with the anti-settling speed increase structure disposed on the inner side of the body.

[0020] Furthermore, the anti-precipitation speed-up structure is an anti-precipitation speed-up groove located on the inner side of the body, pointing downwards, with the angle between the anti-precipitation speed-up groove and the vertical radial line being 0 degrees to 45 degrees.

[0021] Furthermore, the anti-sedimentation speed-increasing tank has a variable cross-sectional shape, with the upper end being wider than the lower end and the upper end being deeper than the lower end.

[0022] Furthermore, the anti-settling and speed-up structure includes a central countersunk hole and at least one downward-facing groove. The upper end of the groove is connected to the central countersunk hole, and the angle between the lower end of the groove and the vertical radial line is 0 degrees to 45 degrees.

[0023] Furthermore, only one vertically downward-facing slot is set.

[0024] Furthermore, the upper depth of the groove is greater than the lower depth, and the upper width of the groove is greater than the lower width.

[0025] Furthermore, multiple downward spiral-shaped grooves are set, and the spiral-shaped grooves are distributed in the same direction.

[0026] Furthermore, the sum of the oil outlet cross-sectional areas of the anti-sedimentation and speed-up structures is less than the sum of the oil outlet cross-sectional areas of the inclined grooves.

[0027] Furthermore, the left vortex speed increaser includes a sleeve with a speed-increasing spiral oil outlet structure on the sleeve, ensuring that crude oil containing mud and sand in the vortex cavity smoothly enters the spiral channel formed by the intermediate pipe, the outer oil pipe and the spiral guide plate in a rotating state and flows pressurized towards one end of the oil outlet pipe.

[0028] Furthermore, the speed-increasing vortex oil outlet structure is a speed-increasing vortex groove provided on the left end face of the sleeve.

[0029] Furthermore, the number of speed-increasing vortexes is 1 to 20, all of which are opened in the same direction. The speed-increasing vortexes have a variable cross-section structure, with a large inlet end and a small outlet end.

[0030] Furthermore, the speed-increasing directional oil outlet structure is a speed-increasing rotating hole provided on the inner wall of the left side of the sleeve.

[0031] Furthermore, the number of speed-increasing rotating holes is 1 to 20, and all speed-increasing rotating holes are opened in the same direction.

[0032] Furthermore, the sum of the oil outlet cross-sections of all the speed-increasing spiral oil outlet structures is less than the sum of the oil outlet cross-sections of the anti-sedimentation speed-increasing structures.

[0033] Furthermore, an insulation layer is provided on the exposed surfaces of the external oil inlet pipe assembly, the left vortex speed increaser, and the right end sealing component assembly.

[0034] Furthermore, it also includes an insulated box, an oil inlet speed increaser, an inner oil inlet pipe assembly, a uniform heating assembly, an outer oil inlet pipe assembly, an inner pipe oil outlet vortex speed increaser, a left support ring, a left vortex speed increaser, a left end cover, a right end sealing and energizing component, and an oil outlet pipe assembly, all of which are horizontally fixedly installed inside the insulated box.

[0035] The working process of this invention is as follows: The crude oil ejected from the wellhead is sealed to the inner inlet pipe assembly via the outlet pipe. A temperature equalization heating component is installed between the inner and outer inlet pipe assemblies, which can regulate the temperature. The internal and external oil inlet pipe assemblies are heated simultaneously to ensure that the crude oil does not carbonize or change its properties, reduce temperature differences, and ensure that the viscosity of the crude oil remains relatively stable throughout the transportation process.

[0036] Because an oil inlet speed increaser is installed at the inlet of the internal oil inlet assembly, the oil inlet speed increaser can not only make the oil flow from the well... The crude oil flow rate is increased by 2 to 60 times through the outlet pipe, and the crude oil is transformed from a linear flow to a rotating flow within the inner inlet pipe assembly, flowing to the left at high speed. This achieves high-speed directional transport of crude oil in a rotating vortex state within the inner pipe without external power, eliminating the need for the spiral guide vane mandrel added to the inner pipe in existing technologies. This eliminates crude oil transport resistance and prevents sediment from settling within the inner pipe. An inner pipe outlet vortex speed-up device is installed at the outlet end of the inner inlet pipe assembly. This device provides a second speed-up to the crude oil before it enters the oil chamber of the left vortex speed-up device, and can also input crude oil containing sediment into the oil chamber of the left vortex speed-up device in a rotating manner, effectively preventing sediment from settling. The speed-up device further accelerates the swirling crude oil a third time, providing rotating crude oil to the outer inlet pipe assembly. This ensures that no sediment settles and clogs the pipeline during the entire crude oil transport process, guaranteeing smooth crude oil output throughout the entire transport path and achieving self-cleaning, blockage-free, and maintenance-free operation of the pipeline.

[0037] A uniform heating assembly is installed between the inner and outer oil inlet pipe assemblies. This assembly utilizes an outer and inner ring of holes formed by carbon fiber cables, quartz tubes, and quartz sand. Each ring consists of several quartz tubes containing carbon fiber cables. The cavity enclosed by the inner oil inlet pipe assembly and the intermediate pipe is filled with a solid heat conductor (quartz sand or magnesium powder). This uniform heating structure provides synchronous and uniform heating to both the inner and outer oil inlet pipe assemblies. Therefore, the crude oil flowing in both assemblies does not experience localized high-temperature burning and carbonization, and the temperature of the crude oil in the outer oil inlet pipe assembly does not drop abruptly. The heating temperature field created by the combination of carbon fiber cables, quartz tubes, and solid heat conductors is uniform, resulting in a significant effect on warming and thickening the crude oil throughout the entire oil transportation path.

[0038] Because an insulation layer is provided on the exposed surfaces of the external oil inlet pipe assembly, the left vortex speed increaser, and the right end sealing energized component assembly, heat loss of this invention can be reduced.

[0039] Compared with existing technologies, the uniform heating structure can simultaneously and evenly heat the inner and outer oil inlet pipe assemblies. The crude oil flowing in the inner and outer oil inlet pipe assemblies will not experience localized high-temperature burning and carbonization, and the temperature of the crude oil in the outer oil inlet pipe assembly will not drop suddenly. The heating temperature field, which combines carbon fiber cables, quartz tubes, and solid heat conductors, is uniform and has a very significant effect on raising the temperature and reducing the viscosity of crude oil throughout the oil transportation path. In addition, three sets of vortex boosters are added to the oil transportation pipeline of this invention, so that the crude oil is always transported in a vortex flow mode. This not only prevents the sediment from settling and causing blockage, but also ensures the self-cleaning function of the entire crude oil transportation channel without maintenance. Therefore, it can ensure long-term reliable operation and ideally overcome the defects of existing technologies. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of the present invention.

[0041] Figure 2 for Figure 1 A magnified view of the left side after the insulation box has been removed.

[0042] Figure 3 for Figure 1 A magnified view of the right side after the insulation box has been removed.

[0043] Figure 4 for Figure 1 Enlarged cross-sectional view of the middle section (oil outlet pipe removed).

[0044] Figure 5 for Figure 1 A schematic diagram of the disassembled three-dimensional structure after the insulation box has been removed.

[0045] Figure 6 This is a schematic diagram of the uniform temperature heating component.

[0046] Figure 7 This is a schematic diagram of a fuel inlet speed increaser.

[0047] Figure 8 for Figure 7 Top view.

[0048] Figure 9 This is a schematic diagram of another structure of the oil swirl speed increaser with inner tube outlet.

[0049] Figure 10 for Figure 9 A sectional view.

[0050] Figure 11 for Figure 10 Schematic diagram of the cross-sectional structure at the BB position.

[0051] Figure 12 This is a schematic diagram of the first structure of the oil swirl speed increaser in the inner tube, where the anti-sedimentation speed increase groove is a flat keyway on the end face.

[0052] Figure 13 This is a schematic diagram of the second structure of the oil swirl speed increaser in the inner tube. The anti-sedimentation speed increase groove is a variable cross-section groove with an inner depth and an outer width provided on the end face.

[0053] Figure 14 This is a schematic diagram of the third structure of the oil swirl speed increaser in the inner tube. The anti-sedimentation speed increase groove is a variable cross-section groove with a larger inner section and a smaller outer section on the end face.

[0054] Figure 15 for Figure 14 A cross-sectional view at position CC.

[0055] Figure 16 This is a schematic diagram of the fourth type of structure of the oil swirl speed increaser in the inner tube. The anti-sedimentation speed increase groove is a combination structure of a central countersunk hole and three downward-facing sub-grooves on the end face.

[0056] Figure 17 This is a schematic diagram of the three-dimensional structure of the left vortex speed increaser.

[0057] Figure 18 for Figure 17 The left view.

[0058] In the diagram: 1-Inlet oil speed increaser; 2-Inner oil inlet pipe assembly; 3-Equalizing heating assembly; 4-Outer oil inlet pipe assembly; 5-Inner pipe outlet vortex speed increaser; 6-Left support ring; 7-Left vortex speed increaser; 8-Left end cap; 9-Right end sealing component; 10-Outlet pipe; 11-End cap; 12-Slanted groove; 13-Swirl hole; 20-Oil pipe; 21-Connecting pipe; 22-Inner pipe; 31-Heat-resistant positioning plate; 32-Carbon fiber cable; 33-Quartz tube; 34-Center hole; 35-Outer ring hole group; 36-Inner ring hole group; 37-Solid heat conductor; 38-Sand injection hole; 41-Intermediate tube; 42-Outer oil pipe; 43-Spiral guide plate; 51-Body; 52-Anti-settling speed-increasing groove; 53-Center countersunk hole; 54-Separating groove; 71-Sleeve; 72-Speed-increasing vortex groove; 91-Sealing ring; 92-Heat insulation board; 93-Electrical cavity sleeve; 94-Right cover plate; 95-Wiring cavity; 100-Insulation box. Detailed Implementation

[0059] The specific implementation of the present invention will now be described in detail with reference to the accompanying drawings.

[0060] Example 1: Self-cleaning, anti-clogging, dual-chamber, uniformly heated horizontal oil well pumping device, such as... Figures 1-18 As shown, the assembly includes an oil inlet speed increaser 1, an inner oil inlet pipe assembly 2, a uniform temperature heating assembly 3, an outer oil inlet pipe assembly 4, an inner pipe outlet vortex speed increaser 5, a left support ring 6, a left vortex speed increaser 7, a left end cap 8, a right end sealing component 9, and an oil outlet pipe 10. The inner oil inlet pipe assembly 2 and the outer oil inlet pipe assembly 4 are coaxially arranged. The left support ring 6 is sealed and fixed to the left end of the inner oil inlet pipe assembly 2 and the outer oil inlet pipe assembly 4. The inner oil inlet pipe assembly 2 consists of a connecting pipe 21 and an inner pipe 22. The left end of the connecting pipe 21 is sealed and fixed in the inner hole of the inner pipe 22. The oil inlet speed increaser 1 is installed at the right end of the connecting pipe 21, and the right end of the connecting pipe 21 is sealed and connected to the original oil pipe 20. The oil inlet speed increaser 1 includes an end cap 11 and a speed-up steering structure. The speed-up steering structure is an inclined groove 12. The end cap 11 is a stepped structure including a cap and a positioning core. The inclined groove 12 is set on the circumferential side of the end cap 11. The inclined groove 12 and the... The included angle between the end faces of the end cap 11 is 15 degrees to 30 degrees. The outlet of the inclined groove 12 is located at the lowest point of the inner bore of the inner oil inlet pipe 21. The cross-sectional area of ​​the inclined groove 12 is smaller than that of the crude oil transport pipe, and the cross-sectional area of ​​the inclined groove 12 is determined by the acceleration. The included angle between the end faces of the inclined groove 12 and the end cap 11 is selected according to the rotation speed. The crude oil output from the wellhead, after passing through the oil inlet speed increaser 1, not only increases the flow velocity but also changes from a direct current state to a vortex state, flowing rapidly to the left along the inner pipe 22 in a vortex transport mode. An inner pipe oil outlet vortex speed increaser 5 is provided at the oil outlet end of the inner pipe 22. The inner pipe oil outlet vortex speed increaser 5 includes a body 51 and an anti-settling speed increase structure. The anti-settling speed increase structure is an anti-settling speed increase groove 52, which is set on the inner side of the body 51. The anti-settling speed increase groove 52 is vertically downward and has a flat keyway structure. Figure 12 As shown, its cross-sectional area is smaller than that of the speed-up steering groove 12; The external oil inlet pipe assembly 4 includes an intermediate pipe 41, an external oil pipe 42, and a spiral guide plate 43. The lower end of the spiral guide plate 43 is fixed on the outer circular surface of the intermediate pipe 41, and the upper end of the spiral guide plate 43 is engaged with the inner hole of the external oil pipe 42, forming an independent spiral guide groove between the external oil pipe 42 and the intermediate pipe 41. The cross-sectional area of ​​the spiral guide groove is set according to the flow rate of the injection pipe, and its pitch is determined according to the sand content and viscosity of the crude oil. The spiral guide groove is both a dynamic guide groove for crude oil and a heat dissipation plate. Together with the intermediate pipe 41, it forms a three-dimensional heat dissipation component, which simultaneously increases the temperature of the outer crude oil and the external oil pipe 42. A uniform temperature heating component 3 is disposed between the inner oil inlet pipe assembly 2 and the outer oil inlet pipe assembly 4. The uniform temperature heating component 3 includes 3-4 coaxially spaced heat-resistant positioning plates 31, carbon fiber cables 32, quartz tubes 33, and a solid heat conductor 37 (quartz sand). The heat-resistant positioning plates 31 are coaxially provided with a central hole 34, an outer ring hole group 35, an inner ring hole group 36, and a sand injection hole 38. The heat-resistant positioning plates 31 are made of mica. The outer ring hole group 35 and the inner ring hole group 36 are each composed of several positioning holes. The positioning holes in the outer ring hole group 35 are evenly distributed on the same circumference, while the positioning holes in the inner ring hole group 36 are distributed on another circumference. The quartz tubes 33 are fitted into the positioning holes on the coaxially spaced heat-resistant positioning plates 31. A carbon fiber cable 32 is fitted into each quartz tube 33. The inner oil inlet pipe assembly 2 is fitted into the central hole 34 of the heat-resistant positioning plate 31, and the outer oil inlet... The inner hole of the intermediate tube 41 in the tube assembly 4 is fitted onto the outer circle of the heat-resistant positioning plate 31. Quartz sand is filled into the inner cavity enclosed by the inner oil inlet tube assembly 2 and the intermediate tube 41 through the sand injection hole 38. It can synchronously heat the inner oil inlet tube assembly 2 and the outer oil inlet tube assembly 4. In the uniform temperature heating assembly 3, three carbon fiber cables 32 pass through the quartz tube 33 from the right end in sequence. Both ends of the carbon fiber cables 32 are located in the wiring cavity 95 of the right end sealing component 9. The right end sealing energizing component 9 includes a sealing ring 91, a heat insulation plate 92, an electrical cavity sleeve 93 and a right cover plate 94. The sealing ring 91 is sealed and fixed between the intermediate tube 41 and the outer oil tube 42. The heat insulation plate 92 and the electrical cavity sleeve 93 are fixedly installed on the sealing ring 91 by screws. The right cover plate 94 is installed on the right end of the electrical cavity sleeve 93. The three carbon fiber cables 32 are connected to the three-phase AC power supply in a star connection.

[0061] The left vortex speed increaser 7 is sealed and installed at the left end of the external oil inlet pipe assembly 4. The left vortex speed increaser 7 includes a sleeve 71, on which a speed-increasing vortex oil outlet structure is provided to ensure that the crude oil containing mud and sand in the vortex cavity smoothly enters the spiral channel formed by the intermediate pipe 41, the external oil pipe 42 and the spiral guide plate 43 in a rotating state and flows under pressure towards the oil outlet pipe 10. In this example, the speed-increasing vortex oil outlet structure is a speed-increasing vortex groove 72 provided on the left end face of the sleeve 71. There are three speed-increasing vortex grooves 72, and all speed-increasing vortex grooves 72 are opened in the same vortex direction. The speed-increasing vortex groove 72 is a variable cross-section structure with a large inlet end and a small outlet end.

[0062] The oil outlet pipe 10 is located above the right end of the outer oil pipe 42 and communicates with the oil cavity between the intermediate pipe 41 and the outer oil pipe 42. The uniform heating component 3 can simultaneously heat the inner oil inlet pipe assembly 2 and the outer oil inlet pipe assembly 4 to ensure that the crude oil will not carbonize and denature due to local high temperature burning, and reduce the temperature difference of the crude oil. The crude oil flows in a high-speed rotating manner in the oil cavity of the left vortex speed increaser 7 to prevent the sediment in the crude oil from settling. The flow speed increaser 7 provides the rotating crude oil to the outer oil inlet pipe assembly 4, and the sediment does not cause the pipeline to be blocked. This ensures that the crude oil is output smoothly throughout the oil transportation path. The exposed surfaces of the outer oil inlet pipe assembly 4, the left vortex speed increaser 7 and the right end sealing and energizing component 9 are all provided with heat insulation layers.

[0063] Example 2: The difference from Example 1 is that the structure of the oil inlet speed increaser 1 has been changed. The speed-up steering structure is a swirling hole 13 set on the end face of the end cover 11. The angle between the swirling hole 13 and the end face of the end cover 11 is 10 degrees to 45 degrees.

[0064] Example 3: The difference from Example 1 and Example 2 is that the inclined groove 12 or swirl hole 13 has a variable cross-sectional shape, and the cross-sectional area of ​​the oil inlet end is larger than that of the oil outlet end.

[0065] Example 4: The difference from Example 1 and Example 2 is that the anti-sedimentation speed-increasing tank 52 has a variable cross-sectional shape, with the upper end being wider than the lower end and the upper end being deeper than the lower end.

[0066] Example 5: The difference between Example 1 and Example 2 lies in the anti-settling and speed-up structure. It includes a central countersunk hole 53 and multiple downward-facing grooves 54. The upper ends of the grooves 54 are connected to the central countersunk hole 53, and the angle between the lower ends of the grooves 54 and the vertical radial line is 0 degrees to 45 degrees. As a special case, only one vertically downward-facing groove 54 is provided.

[0067] Example 6: The difference from Example 5 is that the upper depth of the groove 54 is greater than the lower depth, and the upper width of the groove 54 is greater than the lower width.

[0068] Example 7: The difference from Example 5 is that multiple downward spiral grooves 54 are provided, and the spiral grooves 54 are distributed in the same direction.

[0069] Example 8: The difference from Example 5 is that the speed-increasing rotational oil outlet structure is a speed-increasing rotational hole set on the inner wall of the left side of the sleeve 71. The number of speed-increasing rotational holes is 1 to 20, and all speed-increasing rotational holes are opened in the same rotational direction.

[0070] To reduce the impact of ambient temperature on oil transportation, in the examples above, the combination of the oil inlet speed increaser 1, the inner oil inlet pipe assembly 2, the uniform temperature heating assembly 3, the outer oil inlet pipe assembly 4, the inner pipe oil outlet vortex speed increaser 5, the left support ring 6, the left vortex speed increaser 7, the left end cover 8, the right end sealing and energizing component 9, and the oil outlet pipe 10 is horizontally and fixedly installed in the insulation box 100.

[0071] There are many embodiments of the present invention. As long as the oil inlet speed increaser 1, the inner pipe outlet swirl speed increaser 5 and the left vortex speed increaser 7 are added to the oil pipeline to increase the speed, so that impurities such as mud and sand in the crude oil are transported with the crude oil in a mixed flow mode, and the inner oil inlet pipe assembly 2 and the outer oil inlet pipe assembly 4 are heated at the same time by the uniform temperature heating component 3, all technical solutions are within the protection scope of the present invention.

Claims

1. A self-cleaning, anti-clogging, dual-chamber, uniformly heated horizontal oil well transportation device, comprising an inner inlet pipe assembly (2), an electric heating assembly, and an outer inlet pipe assembly (4), wherein the inner inlet pipe assembly (2) and the outer inlet pipe assembly (4) are coaxially arranged, characterized in that: It also includes an inlet oil speed increaser (1), an inner tube oil outlet vortex speed increaser (5), a left support ring (6), a left vortex speed increaser (7), a left end cap (8), a right end sealing component (9), and an oil outlet pipe (10). The left support ring (6) is sealed and fixed to the left end of the inner inlet pipe assembly (2) and the outer inlet pipe assembly (4). An inlet oil speed increaser (1) is provided at the inlet end of the inner inlet pipe assembly (2), which enables the crude oil flowing into the wellhead oil outlet pipe (10) in a straight line. When entering the inner inlet pipe assembly (2), the flow velocity is increased and the flow changes to a rotating mode to the left inside the pipe; an inner pipe outlet vortex speed increaser (5) is provided at the oil outlet end of the inner inlet pipe assembly (2); the electric heating assembly is a uniform temperature heating assembly (3); the uniform temperature heating assembly (3) is located between the inner inlet pipe assembly (2) and the outer inlet pipe assembly (4); the left vortex speed increaser (7) is sealed and installed at the left end of the outer inlet pipe assembly (4); and the left end cap (8) is sealed and installed. At the left end of the left vortex speed increaser (7), the left end cap (8), the left vortex speed increaser (7), the left support ring (6), and the inner tube oil outlet vortex speed increaser (5) form a vortex cavity. The inner tube oil outlet vortex speed increaser (5) can make the crude oil input from the inner oil inlet pipe assembly (2) form a vortex in the vortex cavity, further increasing the flow rate of the crude oil. At the same time, it forces the mud and sand in the crude oil to vortex synchronously with the rotating crude oil, preventing the mud and sand from settling. The high-speed vortex-shaped crude oil is directionally accelerated by the left vortex speed increaser (7) and enters the outer oil inlet pipe assembly (4). The rotating crude oil accelerated by the left vortex speed increaser (7) is rapidly rotated and transported towards the oil outlet pipe (10) along the spiral channel in the outer oil inlet pipe assembly (4). The mud and sand in the crude oil will not precipitate and accumulate in the outer oil inlet pipe assembly (4) and block the pipeline, ensuring that the crude oil is output smoothly throughout the oil transportation path. The right end sealing component (9) is installed at the right end of the outer oil inlet pipe assembly (4), and the oil outlet pipe (10) The uniform heating component (3) is located above the right end of the external oil inlet pipe assembly (4) and communicates with the oil cavity of the external oil inlet pipe assembly (4). The uniform heating component (3) can simultaneously perform uniform heating on the internal oil inlet pipe assembly (2) and the external oil inlet pipe assembly (4), ensuring that the crude oil does not coke or change its properties during the heating process. The crude oil is uniformly heated by the uniform heating component (3) in the entire conveying channel, ensuring that the viscosity of the crude oil is stable and that it is in a state of good fluidity. The crude oil flows at high speed through a rotating mechanism, preventing the sediment in the crude oil from settling and blocking the pipeline, and ensuring that the crude oil is output smoothly in the entire oil conveying path.

2. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 1, characterized in that: The external oil inlet pipe assembly (4) includes an intermediate pipe (41), an external oil pipe (42), and a spiral guide plate (43). The lower end of the spiral guide plate (43) is fixed on the outer circular surface of the intermediate pipe (41), and the upper end of the spiral guide plate (43) is engaged with the inner hole of the external oil pipe (42) to form an independent spiral guide groove between the external oil pipe (42) and the intermediate pipe (41). The cross-sectional area of ​​the spiral guide groove is set according to the flow rate of the wellhead injection pipe, and its pitch is determined according to the sand content and viscosity of the crude oil. The spiral guide plate (43) is both a dynamic guide groove for crude oil and a heat dissipation plate. Together with the intermediate pipe (41), it forms a three-dimensional heat dissipation component, which simultaneously increases the temperature of the outer layer of crude oil and the external oil pipe (42).

3. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 1, characterized in that: The uniform heating component (3) includes two or more coaxially spaced heat-resistant positioning plates (31), carbon fiber cables (32), quartz tubes (33), and solid heat conductors (37). A central hole (34), an outer ring hole group (35), and an inner ring hole group (36) are coaxially arranged on the heat-resistant positioning plate (31). Both the outer ring hole group (35) and the inner ring hole group (36) consist of several positioning holes. The positioning holes in the outer ring hole group (35) are evenly distributed on the same circumference, while the positioning holes in the inner ring hole group (36) are distributed on another circumference. The quartz tube (33) is fitted with... In the positioning holes of the coaxially spaced heat-resistant positioning plates (31), carbon fiber cables (32) are installed in each quartz tube (33). The inner oil inlet pipe assembly (2) is installed in the center hole (34) of the heat-resistant positioning plate (31). The inner hole of the middle tube (41) in the outer oil inlet pipe assembly (4) is installed on the outer circle of the heat-resistant positioning plate (31). The inner cavity enclosed by the inner oil inlet pipe assembly (2) and the middle tube (41) is filled with solid heat conductor (37), which can synchronously and uniformly heat the inner oil inlet pipe assembly (2) and the outer oil inlet pipe assembly (4).

4. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well oil transportation device according to claim 3, characterized in that: in A reinforcing hole group is provided between the outer ring hole group (35) and the inner ring hole group (36). A quartz tube (33) is installed in the positioning hole of the reinforcing hole group, which is more conducive to the homogenization of the heating component (3).

5. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 3, characterized in that: In the uniform heating assembly (3), the carbon fiber cable (32) passes through multiple quartz tubes (33) in sequence, with both ends of the carbon fiber cable (32) located at the right end.

6. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 3, characterized in that: Sand injection holes (38) are also provided on the heat-resistant positioning plate (31).

7. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 3, characterized in that: The heat-resistant positioning plate (31) is made of mica, and the solid heat conductor (37) is made of quartz sand or magnesium powder.

8. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 1, characterized in that: The oil inlet speed increaser (1) includes an end cap (11) and a speed-boosting steering structure, which is mounted on the end cap (11).

9. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 8, characterized in that: The speed-up steering structure is an oblique groove (12) provided on the circumferential side of the end cover (11), and the included angle between the oblique groove (12) and the end face of the end cover (11) is 10 degrees to 45 degrees.

10. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 8, characterized in that: The speed-up steering structure is a swirling hole (13) set on the end face of the end cover (11), and the included angle between the swirling hole (13) and the end face of the end cover (11) is 10 degrees to 45 degrees.

11. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 9 or 10, characterized in that: The inclined groove (12) or swirling hole (13) has a variable cross-sectional shape, with the cross-sectional area of ​​the oil inlet end being larger than that of the oil outlet end.

12. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 8, characterized in that: The end cap (11) is a stepped structure including a cap and a positioning core. The oil outlet cross-sectional area of ​​the speed-up steering structure is smaller than the cross-sectional area of ​​the crude oil transport pipe. The oil outlet cross-sectional area of ​​the speed-up steering structure is determined by the acceleration. The angle between the speed-up steering structure and the end face of the end cap (11) is determined according to the rotation speed.

13. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 1, characterized in that: The inner tube oil swirl speed increaser (5) includes a body (51) and an anti-settling speed increase structure, which is set on the inner side of the body (51).

14. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 13, characterized in that: The anti-settling and speed-up structure is an anti-settling and speed-up groove (52) set on the inner side of the body (51) facing downwards, and the angle between the anti-settling and speed-up groove (52) and the vertical radial line is 0 degrees to 45 degrees.

15. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 14, characterized in that: The anti-sedimentation speed-increasing tank (52) has a variable cross-section shape, with the upper end being wider than the lower end and the upper end being deeper than the lower end.

16. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 13, characterized in that: The anti-settling and speed-up structure includes a central countersunk hole (53) and at least one downward-facing groove (54). The upper end of the groove (54) is connected to the central countersunk hole (53), and the angle between the lower end of the groove (54) and the vertical radial line is 0 degrees to 45 degrees.

17. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 16, characterized in that: Only one vertically downward slot (54) is set.

18. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 16, characterized in that: The upper depth of the groove (54) is greater than the lower depth, and the upper width of the groove (54) is greater than the lower width.

19. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 16, characterized in that: Multiple downward spiral grooves (54) are provided, and the spiral grooves (54) are distributed in the same direction.

20. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 13, characterized in that: The sum of the oil outlet cross-sectional areas of the anti-sedimentation and speed-up structures is less than the sum of the oil outlet cross-sectional areas of the inclined groove (12).

21. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 1, characterized in that: The left vortex speed increaser (7) includes a sleeve (71) with a speed-increasing spiral oil outlet structure on the sleeve (71) to ensure that the crude oil containing mud and sand in the vortex cavity smoothly enters the spiral channel formed by the intermediate pipe (41), the outer oil pipe (42) and the spiral guide plate (43) in a rotating state and flows pressurized to one end of the oil outlet pipe (10).

22. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 1, characterized in that: The speed-increasing spiral oil outlet structure is a speed-increasing spiral groove (72) set on the left end face of the sleeve (71).

23. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 22, characterized in that: The number of speed-increasing vortexes (72) is 1 to 20. All speed-increasing vortexes (72) are opened in the same direction. The speed-increasing vortexes (72) are variable cross-section structures with a large inlet end and a small outlet end.

24. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 22, characterized in that: The speed-increasing directional oil outlet structure is a speed-increasing rotating hole set on the inner wall of the left side of the sleeve (71).

25. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 24, characterized in that: The number of speed-increasing rotating holes is 1 to 20, and all speed-increasing rotating holes are opened in the same direction.

26. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 21, characterized in that: The sum of the oil outlet cross-sections of all the speed-increasing spiral oil outlet structures is less than the sum of the oil outlet cross-sections of the anti-sedimentation speed-increasing structures.

27. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 1, characterized in that: A heat insulation layer is provided on the exposed surface of the combination of the external oil inlet pipe assembly (4), the left vortex speed increaser (7) and the right end sealing component (9).

28. The self-cleaning, anti-clogging, dual-chamber uniform temperature heating horizontal oil well transportation device according to claim 1 or 27, characterized in that: It also includes a combination of an insulated box (100), an oil inlet speed increaser (1), an inner oil inlet pipe assembly (2), a uniform heating assembly (3), an outer oil inlet pipe assembly (4), an inner pipe oil outlet vortex speed increaser (5), a left support ring (6), a left vortex speed increaser (7), a left end cap (8), a right end sealing and energizing component 9, and an oil outlet pipe (10), which are horizontally fixed inside the insulated box (100).

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