A centrifugal supergravity oil well fluid production reinjection water in-situ extraction device and method

Abstract

The present application relates to the technical field of oil-water separation, and discloses a centrifugal supergravity oil well production liquid reinjection water on-site extraction device and method; the device comprises a filtering mechanism and an oil-water separation mechanism; the filtering mechanism is provided with a filter tank; a feeding pipe is communicated with the top of the filter tank; a bend pipe is communicated with the bottom of the filter tank; the bend pipe is communicated with a feeding tank; the oil-water separation mechanism comprises a feeding tank, a rotating conical shaft, rotating blades, a shaft sleeve, a rectangular port, blades, an outer shell, a conical partition ring, a water outlet ring, an oil outlet ring and a flow control mechanism; the device can remove slag from oil well production liquid, prevent impurities in the oil well production liquid from affecting the separation quality, prevent blockage and the like, and increase the service life of the device; the large-flow hole, the medium-flow hole and the small-flow hole on the rotating disc are matched with the oil outlet and the water outlet to control the flow of the oil and the water, increase the adjustability, and prevent the occurrence of a cylinder explosion.

Description

Technical Field

[0001] This invention relates to the field of oil-water separation technology, and proposes a centrifugal high-gravity oil well product fluid reinjection water on-site extraction device and method. Background Technology

[0002] As oilfield development enters the high water-cut phase, the water cut of the produced fluid continues to rise, currently reaching 80%-98%. This increases the burden on the produced fluid delivery system and downstream processing equipment. Furthermore, because the reservoir requires large-scale water injection, the water, after centralized treatment at the downstream joint station, must be transported to the injection wells via long-distance pipelines. This unintentionally creates a long-distance water circulation, consuming significant amounts of heat and electricity, and also leading to poor compatibility between the reinjected water and the reservoir.

[0003] Clearly, if the produced liquid can be processed and reinjected on-site, it will not only significantly reduce production costs but also improve the water injection effect.

[0004] Traditional gravity settling methods are difficult to achieve this goal due to their large footprint, high investment, and low efficiency.

[0005] Currently, centrifuges have the highest separation capacity and efficiency, with centrifugal acceleration reaching thousands or even tens of thousands of times the acceleration due to gravity. They have begun to be used and developed in emergency response to oil spills on water and in wastewater treatment.

[0006] Such oil-water centrifugal separation devices and methods are disclosed in Chinese patent application CN201611000394.6, US9731223, US5582724, and US5484521.

[0007] A prototype centrifuge with a diameter of 380mm has already achieved a daily processing capacity of 64.8 m³ / d, with the oil content in the effluent approaching the environmental standard of 15 ppm. Its ultimate goal is to process crude oil of various properties, including heavy oil with an oil-water density ratio close to 0.98, achieving a daily processing capacity of 172.8 m³ / d, while maintaining the oil content in the effluent in compliance with environmental standards. Therefore, centrifuges are highly suitable for applications at wellheads and in production fluid delivery pipelines.

[0008] However, unlike emergency response to crude oil spills on water, crude oil production often involves severe emulsification due to the action of valves, elbows, and other pipe fittings in the pumping unit and pipelines, as well as various chemical injections. Although it remains an oil-water mixture overall, it contains a large amount of water-in-oil and oil-in-water emulsions. Among these, oil-in-water emulsions have the greatest impact on the quality of the effluent from the separator. An oil-in-water emulsion is an emulsion formed by very fine oil droplets uniformly dispersed in water. Physically, it is equivalent to a homogeneous single-phase fluid with a density close to, but slightly less than, that of water. Although existing centrifugal separators have adopted many measures to enhance their ability to separate emulsions, each separator actually has a limit to its ability to separate fine droplets, called the critical separation diameter. Droplets with a diameter smaller than this value cannot be separated effectively. This is because as the diameter of tiny droplets decreases, the droplet's volume relative to its surface area decreases sharply. Therefore, the volume force (centrifugal force) acting on the droplet is less dominant than the surface force exerted by the surrounding fluid. At this point, the tiny oil droplets are essentially unaffected by centrifugal force in water and flow with the water or undergo Brownian motion. Currently, the critical separation diameter of most separators is on the order of 100 micrometers to tens of micrometers. Although the critical separation diameter could be further reduced by increasing centrifugal force, such as by increasing the rotation speed or increasing the diameter of the separation cylinder, this is likely not economically viable.

[0009] Therefore, due to the presence of the emulsion, existing centrifugal separators cannot achieve complete oil-water separation. According to the centrifugal separation principle, oil-in-water emulsions are generally located on the water side of the oil-water interface within the separator, and the closer to the oil-water interface, the greater the oil content of the oil-in-water emulsion.

[0010] Because existing separators lack a dedicated separation mechanism for oil-in-water emulsions, this oil-rich emulsion cannot cross the oil-water interface to enter the oil separation channel and be discharged from the separator with the oil. Instead, it accumulates in place until it diffuses into the water, increasing the oil content in the effluent and failing to meet the water quality requirements for oilfield injection. Furthermore, the oil well's produced fluid contains impurities; directly separating it would reduce separation quality, increase clogging, and shorten equipment lifespan. Workers cannot adjust the extraction process according to their preferences and budget, leading to wasted costs. Moreover, workers cannot control the flow rate of oil and water, increasing the risk of tank explosions and threatening their safety. Summary of the Invention

[0011] The purpose of this invention is to address the shortcomings of existing technologies by proposing a centrifugal, high-gravity oil well production fluid reinjection water on-site extraction device and method.

[0012] The technical solution is as follows: A centrifugal high-gravity oil well production fluid reinjection water on-site extraction device includes a filtration mechanism and an oil-water separation mechanism. The filtration mechanism is provided with a filter tank, the top of which is connected to an inlet pipe, and the bottom of which is connected to a bend pipe, which is connected to the feed tank. The oil-water separation mechanism includes a feed tank, a rotating conical shaft, rotating blades, a bushing, rectangular openings, blades, a shell, a conical spacer ring, a water outlet ring, an oil outlet ring, and a flow control mechanism. The rotating conical shaft is fixedly connected inside the feed tank, and the rotating blades are fixedly connected to the outer side of the rotating conical shaft. The outer side of the rotating blades contacts the feed tank. The bushing is fixedly connected to the outer side of the middle part of the rotating shaft. Several evenly distributed rectangular openings are fixedly connected to the outer side of the bushing near the feed tank end. Each rectangular opening is provided with an inlet... The feed inlet; several evenly distributed blades are fixedly connected to the outer side of the bushing. The outer side of the blades contacts the outer shell. Conical spacers are inserted between the blades. The outer side of the large ring of the conical spacer is fixedly connected to the outer shell. A circular partition is provided on one side of the small end of the conical spacer. A bushing is inserted through the middle of the circular partition and fixedly connected. A water outlet ring is fixedly connected to the side of the outer shell near the feed trough. Several evenly distributed water outlets are provided inside the water outlet ring. A rotating shaft is inserted through the inside of the water outlet ring and fixedly connected. An oil outlet ring is fixedly connected to the end of the outer shell away from the water outlet ring. A rotating shaft is inserted through the inside of the oil outlet ring and fixedly connected. Several evenly distributed oil outlets are provided inside the oil outlet and water outlet. A flow control mechanism is provided inside the end of each oil outlet and water outlet near the outer shell.

[0013] Furthermore, one end of the oil outlet, water outlet, and feed inlet all leads into the interior of the outer casing. The other ends of the oil outlet and water outlet lead into the oil outlet trough and water outlet trough, respectively. Separation covers are provided on the outer sides of both ends of the rotating shaft and are rotatably connected. The oil outlet trough and water outlet trough are both located inside the separation covers. At the lower ends of the oil outlet trough and water outlet trough, the separation covers are respectively provided with an oil outlet pipe and a water outlet pipe. The oil outlet pipe and water outlet pipe are inserted into the base plate and fixedly connected. A first valve and a second valve are respectively provided on the outer sides of the oil outlet pipe and water outlet pipe. A first collection box and a second collection box are provided at the lower ends of the oil outlet pipe and water outlet pipe. A connecting shaft is fixedly connected to the end of the rotating shaft away from the separation cover. A stepped disc is fixedly connected to the end of the connecting shaft away from the rotating shaft. The two sides of the stepped disc... A retainer is provided on the outer side of the end and is rotatably connected. The lower end of the retainer is fixedly connected to the base plate. A speed-changing mechanism is provided inside the stepped disc. The outer side of the speed-changing mechanism is engaged with pulley plates. A belt is provided on the outer side of the evenly distributed pulley plates. The end of the belt away from the stepped disc is engaged with a pulley. One end of the pulley is fixedly connected to a drive motor shaft. The end of the drive motor shaft away from the pulley is provided with a drive motor. The lower end of the drive motor is fixedly connected to a motor base. The lower end of the motor base is fixedly connected to a T-shaped slider. The T-shaped slider slides in a T-shaped groove. The T-shaped groove is provided in the base plate. A first spring is fixedly connected to one side of the T-shaped slider. The side of the first spring away from the T-shaped slider is fixedly connected to the base plate.

[0014] Furthermore, the slag removal mechanism includes a filter screen frame. A hinge pin is inserted into one end of the filter screen frame and rotatably connected thereto. Both ends of the hinge pin are fixedly connected to the filter body. The other end of the filter screen frame rotates within a rotating groove. A filter screen is disposed inside the filter screen frame. Symmetrically distributed side plates are fixedly connected to both ends of the filter screen. The side plates slide in side grooves, which are symmetrically arranged within the filter screen frame. A second spring is fixedly connected to the upper end of each side plate, and the upper end of the second spring is fixedly connected to the filter screen frame. A cam is contacted at the lower end of each side plate. A vibration motor shaft is inserted into the middle of the cam and fixedly connected thereto. A vibration motor is disposed at the end of the vibration motor shaft furthest from the cam, and the end of the vibration motor furthest from the cam is fixedly connected to the vibrating motor. A filter screen outer frame is fixedly connected. A first optical axis is provided and fixedly connected in a groove on the lower side of the filter screen outer frame away from the hinge pin. A slider slides on the outer side of the first optical axis and slides in the groove. A lifting lug is fixedly connected to the lower end of the slider. A push rod is hinged to the lower end of the lifting lug. A hydraulic cylinder is provided at the lower end of the push rod and is fixedly connected to the filter body. A baffle is provided on the side of the filter screen outer frame near the hinge pin and is inserted into the filter body. A gear is meshed with one end of the baffle. A rotating motor shaft is fixedly connected to one side of the gear. A rotating motor is provided at the end of the rotating motor shaft away from the gear and is fixedly connected to the filter body. A slag discharge plate is provided on the side of the baffle away from the filter screen outer frame.

[0015] Furthermore, the speed-changing mechanism includes a speed-changing motor, which is fixed inside a stepped disk. A speed-changing motor shaft is provided on one side of the speed-changing motor. A lead screw is fixedly connected to the side of the speed-changing motor shaft away from the speed-changing motor. The stepped disk is fixedly connected to the side of the lead screw away from the speed-changing motor shaft. A ball screw pair is connected to a conical body on the outer side of the lead screw. Symmetrically distributed second optical shafts are inserted inside both ends of the conical body. The stepped disk is fixedly connected to both ends of the second optical shafts. Several evenly distributed inclined grooves are provided on the outer side of the conical body. A third optical shaft is fixedly connected inside the inclined grooves. An inclined block slides on the outer side of the second optical shaft. A telescopic rod is fixedly connected to the end of the inclined block away from the conical body. The telescopic rod slides on the stepped disk. A pulley is fixedly connected to the end of the telescopic rod away from the inclined block.

[0016] Furthermore, the flow control mechanism includes a turntable that rotates outside a plurality of evenly distributed water outlets and oil outlets. The turntable is provided with a plurality of evenly distributed large flow orifices, medium flow orifices, and small flow orifices, which are all connected to the water outlets and oil outlets. One side of the turntable is meshed with an adjusting gear, and one side of the adjusting gear is fixedly connected to an adjusting motor shaft. An adjusting motor is provided at the end of the adjusting motor shaft away from the adjusting gear, and the adjusting motor is fixedly connected to the housing.

[0017] Furthermore, the turntable and the baffle are respectively provided with teeth at the meshing points with the adjusting gear and the gear.

[0018] Furthermore, the blade is wavy and has several evenly distributed circular holes inside.

[0019] Furthermore, the outer side of the large ring of the conical spacer is provided with several evenly distributed first grooves.

[0020] Furthermore, the outer side of the circular partition is provided with several evenly distributed second grooves; the first groove, the second groove and the rectangular opening are all located in the middle between each blade; the opening and closing of the first valve, the second valve, the third valve, the pressure boosting valve, the regulating motor, the drive motor, the variable speed motor, the vibration motor, the hydraulic cylinder and the rotation motor are all controlled by a remote control.

[0021] Furthermore, the oil well produced fluid is fed into the filter tank through the feed pipe for filtration. After filtration, the worker can remotely activate the hydraulic cylinder and vibration motor. The hydraulic cylinder moves the push rod upward, which in turn moves the lifting lug upward. The lifting lug then moves the slider within the first optical axis, causing the filter screen frame to flip. The vibration motor rotates its shaft, which in turn rotates the cam. The cam's rotation causes the side plates to vibrate up and down. The symmetrically distributed side plates vibrate up and down, causing the filter screen to vibrate up and down, thus allowing the filtered slag to pass through the discharge tank while vibrating. The plate falls into the third collection box, completing the slag removal mechanism. The filtered oil well fluid can be pumped into the feed chute of the bend and rotating shaft through the booster valve, and then enters the outer casing through several evenly distributed rectangular openings. At this time, the operator can start the drive motor via remote control, which drives the drive motor shaft to rotate. The drive motor shaft rotates, which drives the pulley to rotate. The pulley rotates, which moves the belt. The belt moves, which moves, which moves several evenly distributed pulley plates to rotate. The pulley plates rotate, which drives the stepped disc to rotate. The stepped disc rotates, which drives the connecting shaft to rotate. The connecting shaft rotates, which drives the rotating shaft to rotate. The rotating shaft rotates, which drives the bushing to rotate, thus driving the... Several evenly distributed blades, conical septa, and circular baffles rotate, separating the oil well's produced fluids under high-speed rotation. Oil and gas are thrown into the oil outlet of the oil outlet ring into the oil outlet groove and then flow into the first collection tank through the oil outlet pipe. Water is thrown into the water outlet groove through the water outlet of the water outlet ring and then flows into the second collection tank through the water outlet pipe, thus achieving the function of extracting reinjected water. To control the flow rate of oil and water, the operator can use a remote control to activate the regulating motor, which in turn rotates the regulating motor shaft. The rotating regulating motor shaft then rotates the regulating gear, which in turn rotates the turntable, which in turn rotates... The large, medium, and small flow orifices rotate and cooperate with the oil outlet and water outlet to control the flow rate of oil and water, thus completing the function of the flow control mechanism. If the extraction accuracy is to be improved, the operator can use the remote control to turn on the variable speed motor to drive the variable speed motor shaft to rotate. The rotation of the variable speed motor shaft drives the lead screw to rotate, which in turn drives the cone to move to one end. The movement of the cone to one end drives the inclined block to move to one end, which in turn drives the telescopic rod to move inward, thereby changing the speed of the blades and completing the function of the variable speed mechanism. Thus, the function of a separation device for extracting reinjection water from the produced fluid of a high water-cut oil well is completed.

[0022] The beneficial effects of the present invention are: 1. The present invention is equipped with a slag removal mechanism, which can remove slag from the oil well produced fluid, prevent impurities in the oil well produced fluid from affecting the separation quality, and also prevent blockages and increase the service life of the equipment.

[0023] 2. This invention is equipped with a flow control mechanism. Workers can use a remote control to start the regulating motor to drive the rotating disk to rotate, so that the large flow orifice, medium flow orifice and small flow orifice on the rotating disk can be matched with the oil outlet and water outlet to control the flow rate of oil and water, increase adjustability, and prevent the cylinder from exploding.

[0024] 3. The present invention is equipped with a speed-changing mechanism, which can increase the extraction accuracy and practicality by increasing the rotation speed of the blades relative to the oil well fluid. Furthermore, workers can adjust the extraction according to their own preferences and economic investment conditions, which can increase adjustability.

[0025] 4. The present invention is equipped with wave-shaped blades, round holes and conical spacers, which can better separate oil, gas and reinjection water in the oil well produced fluid. Attached Figure Description

[0026] Figure 1 This is a main working cross-sectional view of a separation device for extracting reinjection water from the produced fluid of a high water-cut oil well according to the present invention. Figure 2 for Figure 1 Sectional view at point AA; Figure 3 for Figure 1 Sectional view at BB; Figure 4 for Figure 1 Sectional view at CC; Figure 5 for Figure 1 A magnified view of a portion at point D; Figure 6 for Figure 1 A magnified view of a portion at point E; Figure 7 for Figure 1 A magnified view of a portion at point F; Figure 8 for Figure 1 A magnified view of a portion of point G; Figure 9 for Figure 1 Enlarged view of a portion at point H; Figure 10 for Figure 1 A magnified view of a portion of point I; Figure 11 for Figure 6 A magnified view of a portion of point J; Figure 12 for Figure 8 A magnified view of a portion at point K; Figure 13 for Figure 8 A magnified view of a portion at point L; Figure 14 for Figure 2A magnified view of a portion at point M; Figure 15 for Figure 3 A magnified view of N local points; Figure 16 for Figure 1 A magnified view of a portion of point O; Figure 17 for Figure 11 A cross-sectional view at PP.

[0027] In the diagram: 1. Base plate; 2. First support column; 3. First collection box; 4. Second collection box; 5. Separation hood; 6. Motor base; 7. Drive motor; 8. Stepped disc; 9. Drive motor shaft; 10. Second support column; 11. Third support column; 12. Rectangular plate; 13. Third collection box; 14. Filter body; 15. Feed pipe; 16. Filter screen frame; 17. Filter screen; 18. Slag discharge plate; 19. Connecting shaft; 20. Rotating shaft; 21. Oil outlet trough; 22. Water outlet trough; 23. 24. Bend; 25. Outer shell; 26. Inner groove of separation hood; 27. First valve; 28. Second valve; 29. ​​Oil outlet; 30. Oil outlet ring; 31. T-shaped slider; 32. First spring; 33. T-shaped slide groove; 34. Pulley; 35. Belt; 36. Pulley plate; 37. Telescopic rod; 38. Blade; 39. Round hole; 40. Conical spacer ring; 41. Circular partition; 42. First groove; 43. Second groove; 44. Rectangular opening; 45. Water outlet ring; 46. Rotating cone 46. ​​Shaft; 47. Feed inlet; 48. Bushing; 49. Hydraulic cylinder; 50. Push rod; 51. Rotating groove; 52. Side plate; 53. Second spring; 54. Side groove; 55. Lifting lug; 56. Slider; 57. First optical shaft; 58. Cam; 59. Vibration motor shaft; 60. Vibration motor; 61. Hinge pin; 62. Baffle; 63. Gear; 64. Rotating motor; 65. Rotating motor shaft; 66. Third valve; 67. Pressure boosting valve; 68. Variable speed motor; 69. Variable speed electric motor 69. Shaft; 70. Lead screw; 71. Second optical axis; 72. Inclined block; 73. Third optical axis; 74. Inclined groove; 75. Filter tank; 76. Turntable; 77. Adjusting gear; 78. Adjusting motor; 79. Adjusting motor shaft; 80. Rotating blade; 81. Oil outlet pipe; 82. Water outlet pipe; 83. Feed chute; 84. Water outlet; 85. Fixing block; 86. Limiting plate; 87. Cage; 88. Conical body; 89. Large flow orifice; 90. Medium flow orifice; 11. Small flow orifice. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0029] Example 1

[0030] like Figure 1 A separation device for extracting reinjection water from high water-content oil well produced fluid includes a base plate 1. Several evenly distributed first support columns 2 are fixedly connected to the lower perimeter of the base plate 1. A filter body 14 is provided on one side of the upper end of the base plate 1. Second support columns 10 are fixedly connected to the lower perimeter of the filter body 14. The lower end of the second support columns 10 is fixedly connected to the base plate 1. An inlet pipe 15 is fixedly connected to the upper end of the filter body 14. A third valve 65 is provided on the outer side of the end of the inlet pipe 15 near the filter body 14. A filter groove 74 is opened inside the filter body 14. A slag removal mechanism is provided in the middle of the filter groove 74. A slag discharge plate 18 is provided and fixedly connected to the side of the filter body 14 near the slag removal mechanism. A third collection box 13 is provided at the lower end of the slag discharge plate 18. A rectangular plate 12 is fixedly connected to the lower end of the third collection box 13. Third support columns 11 are fixedly connected to the lower perimeter of the rectangular plate 12. The lower end of the third support columns 11 is fixedly connected to the base plate 1. A bent pipe 23 is provided and fixedly connected to the lower end of the filter body 14 in the filter groove 74.

[0031] like Figure 10 and 16 A pressure boosting valve 66 is provided on the outer side of the end of the bend 23 near the filter body 14. A limiting plate 85 is fixedly connected to the end of the bend 23 away from the filter body 14. A fixing block 84 is provided on the outer side of the limiting plate 85 and is rotatably connected. A rotating shaft 20 is fixedly connected to the end of the fixing block 84 away from the bend 23. A feed trough 82 is provided inside the side of the rotating shaft 20 near the fixing block 84.

[0032] like Figure 2 and 14 The inside of the feed trough 82 is fixedly connected to a rotating conical shaft 45. The outside of the rotating conical shaft 45 is fixedly connected to a rotating blade 79. The outside of the rotating blade 79 contacts the feed trough 82. The middle outer side of the rotating shaft 20 is fixedly connected to a bushing 47. The outer side of the bushing 47 near the end of the feed trough 82 is fixedly connected to several evenly distributed rectangular openings 43. The rectangular openings 43 are provided with feed inlets 46.

[0033] like Figure 1 and 6 Several evenly distributed blades 37 are fixedly connected to the outer side of the bushing 47. The outer side of the blades 37 contacts the outer shell 24, and conical spacers 39 are inserted between the blades. The outer side of the large ring of the conical spacer 39 is fixedly connected to the outer shell 24.A circular partition plate 40 is provided on one side of the small end of the conical partition ring 39. A bushing 47 is inserted through the middle of the circular partition plate 40 and fixedly connected. A water outlet ring 44 is fixedly connected to the side of the outer shell 24 near the feed trough 82. The inside of the water outlet ring 44 is provided with several evenly distributed water outlets 83. A rotating shaft 20 is inserted through the inside of the water outlet ring 44 and fixedly connected. An oil outlet ring 29 is fixedly connected to the end of the outer shell 24 away from the water outlet ring 44. A rotating shaft 20 is inserted through the inside of the oil outlet ring 29 and fixedly connected. The inside of the oil outlet ring 29 is provided with several evenly distributed oil outlets 28. A flow control mechanism is provided inside the end of each oil outlet 28 and water outlet 83 near the outer shell 24.

[0034] One end of the oil outlet 28, the water outlet 83, and the feed inlet 46 all enter the interior of the outer shell 24. The other ends of the oil outlet 28 and the water outlet 83 respectively enter the oil outlet 21 and the water outlet 22. The outer sides of both ends of the rotating shaft 20 are provided with separation covers 5 and are rotatably connected. The oil outlet 21 and the water outlet 22 are both located inside the separation cover 5. The lower ends of the oil outlet 21 and the water outlet 22 of the separation cover 5 are respectively provided with an oil outlet pipe 80 and a water outlet pipe 81. The oil outlet pipe 80 and the water outlet pipe 81 are inserted into the bottom plate 1 and are fixedly connected. The outer sides of the oil outlet pipe 80 and the water outlet pipe 81 are respectively provided with a first valve 26 and a second valve 27. The lower ends of the oil outlet pipe 80 and the water outlet pipe 81 are provided with a first collection box 3 and a second collection box 4.

[0035] like Figure 1 and 3 The end of the rotating shaft 20 away from the separation cover 5 is fixedly connected to the shaft 19. The end of the connecting shaft 19 away from the rotating shaft 20 is fixedly connected to the stepped disk 8. The outer sides of both ends of the stepped disk 8 are provided with retainers 86 and are rotatably connected. The lower end of the retainer 86 is fixedly connected to the base plate 1. The stepped disk 8 is provided with a speed change mechanism. The outer side of the speed change mechanism is engaged with the pulleys 35. The outer side of the evenly distributed pulleys 35 is provided with a belt 34. The end of the belt 34 away from the stepped disk 8 is engaged with... A pulley 33 is provided, one end of which is fixedly connected to a drive motor shaft 9. A drive motor 7 is provided at the end of the drive motor shaft 9 away from the pulley 33. The lower end of the drive motor 7 is fixedly connected to a motor base 6. The lower end of the motor base 6 is fixedly connected to a T-shaped slider 30. The T-shaped slider 30 slides in a T-shaped groove 32, which is located in the base plate 1. A first spring 31 is fixedly connected to one side of the T-shaped slider 30. The side of the first spring 31 away from the T-shaped slider 30 is fixedly connected to the base plate 1.

[0036] like Figure 1 , 8-9 and 12-13, the slag removal mechanism includes a filter screen frame 16. A hinge pin 60 is inserted into one end of the filter screen frame 16 and rotatably connected. Both ends of the hinge pin 60 are fixedly connected to the filter body 14. The other end of the filter screen frame 16 rotates within a rotating groove 50. A filter screen 17 is provided inside the filter screen frame 16. Symmetrically distributed side plates 51 are fixedly connected to both ends of the filter screen 17. The side plates 51 slide in side grooves 53, which are symmetrically arranged within the filter screen frame 16. A second spring 52 is fixedly connected to the upper end of the side plate 51, and the upper end of the second spring 52 is fixedly connected to the filter screen frame 16. The lower end of the filter screen is in contact with a cam 57. A vibration motor shaft 58 is inserted through the middle of the cam 57 and fixedly connected. A vibration motor 59 is provided at the end of the vibration motor shaft 58 away from the cam 57. The end of the vibration motor 59 away from the cam 57 is fixedly connected to the filter screen outer frame 16. A first optical shaft 56 is provided and fixedly connected in the lower groove of the end of the filter screen outer frame 16 away from the hinge pin 60. A slider 55 slides on the outer side of the first optical shaft 56. The slider 55 slides in the groove. The lower end of the slider 55 is fixedly connected to a lifting lug 54. The lower end of the lifting lug 54 is hinged to a push rod 49. A hydraulic cylinder is provided at the lower end of the push rod 49. 48. A hydraulic cylinder 48 is fixedly connected inside the filter body 14. A baffle 61 is provided on the side of the filter screen outer frame 16 near the hinge pin 60. The baffle 61 is inserted inside the filter body 14. One end of the baffle 61 is meshed with a gear 62. A rotating motor shaft 64 is fixedly connected to one side of the gear 62. A rotating motor 63 is provided on the end of the rotating motor shaft 64 away from the gear 62. The rotating motor 63 is fixed inside the filter body 14. A slag discharge plate 18 is provided on the side of the baffle 61 away from the filter screen outer frame 16. The worker can open the hydraulic cylinder 48 and the vibration motor 59 via a remote control. The hydraulic cylinder 48 drives the push rod 49. The push rod 49 moves upward, causing the lifting lug 54 to move upward. The lifting lug 54 moves upward, causing the slider 55 to slide within the first optical axis 56. The slider 55 slides within the first optical axis 56, causing the filter screen outer frame 16 to flip. The vibration motor 59 drives the vibration motor shaft 58 to rotate. The rotation of the vibration motor shaft 58 drives the cam 57 to rotate. The rotation of the cam 57 drives the side plate 51 to vibrate up and down. The symmetrically distributed side plates 51 vibrate up and down, causing the filter screen 17 to vibrate up and down. Thus, the filtered residue can vibrate while passing through the residue discharge plate 18 and falling into the third collection box 13, completing the function of the residue removal mechanism.

[0037] like Figure 5The speed-changing mechanism includes a speed-changing motor 67, which is fixed inside a stepped disk 8. A speed-changing motor shaft 68 is located on one side of the speed-changing motor 67. A lead screw 69 is fixedly connected to the side of the speed-changing motor shaft 68 away from the speed-changing motor 67. The stepped disk 8 is fixedly connected to the side of the lead screw 69 away from the speed-changing motor shaft 68. A ball screw pair on the outer side of the lead screw 69 is connected to a conical body 87. Symmetrically distributed second optical shafts 70 are inserted inside the two ends of the conical body 87. The two ends of the second optical shafts 70 are fixedly connected to the stepped disk 8. Several evenly distributed inclined grooves 73 are provided on the outer side of the conical body 87. A third optical shaft 72 is fixedly connected inside the inclined grooves 73. The second optical shafts 72... An inclined block 71 slides on the outer side of the 2. The end of the inclined block 71 away from the cone 87 is fixedly connected to the telescopic rod 36. The telescopic rod 36 slides on the stepped disc 8. The end of the telescopic rod 36 away from the inclined block 71 is fixedly connected to the pulley 35. If the extraction accuracy is to be improved, the worker can turn on the variable speed motor 67 again via remote control to drive the variable speed motor shaft 68 to rotate. The rotation of the variable speed motor shaft 68 drives the lead screw 69 to rotate. The rotation of the lead screw 69 drives the cone 87 to move to one end. The movement of the cone 87 to one end drives the inclined block 71 to move to one end. The movement of the inclined block 71 to one end drives the telescopic rod 36 to move inward, thereby changing the speed of the blade 37 and completing the function of the variable speed mechanism.

[0038] like Figure 6 and 11 The flow control mechanism includes a turntable 75, which rotates outside a plurality of evenly distributed water outlets 83 and oil outlets 28. The turntable 75 is provided with a plurality of evenly distributed large flow orifices 88, medium flow orifices 89, and small flow orifices 90. The large flow orifices 88, medium flow orifices 89, and small flow orifices 90 communicate with both the water outlets 83 and the oil outlets 28. One side of the turntable 75 is meshed with an adjusting gear 76, and one side of the adjusting gear 76 is fixedly connected to an adjusting motor shaft 78. The end of the adjusting motor shaft 78 furthest from the adjusting gear 76 is provided with... The regulating motor 77 is fixedly connected to the housing 24. If it is desired to control the flow rate of oil and water, the operator can turn on the regulating motor 77 via remote control to drive the regulating motor shaft 78 to rotate. The rotation of the regulating motor shaft 78 drives the regulating gear 76 to rotate, which in turn drives the turntable 75 to rotate. The rotation of the turntable 75 drives the large flow orifice 88, the medium flow orifice 89, and the small flow orifice 90 to rotate, which cooperate with the oil outlet 28 and the water outlet 83 to control the flow rate of oil and water, thus completing the function of the flow control mechanism.

[0039] The turntable 75 and the baffle 61 are respectively equipped with teeth at the meshing points with the adjusting gear 76 and the gear 62, which is conducive to completing the function of the slag removal mechanism and adjusting the oil output.

[0040] like Figure 2 and 6The blade 37 is wavy and has several evenly distributed round holes 38 inside. The outer side of the large ring of the conical partition ring 39 has several evenly distributed first grooves 41. The outer side of the circular partition plate 40 has several evenly distributed second grooves 42. The first grooves 41, the second grooves 42 and the rectangular opening 43 are all located in the middle between each blade 37, which can better separate the oil well produced fluid.

[0041] The opening and closing of the first valve 26, the second valve 27, the third valve 65, the pressure boosting valve 66, the regulating motor 77, the drive motor 7, the variable speed motor 67, the vibration motor 59, the hydraulic cylinder 48, and the rotary motor 63 are all controlled by a remote control, which can increase the degree of automation, reduce the labor force of workers, and increase work efficiency.

[0042] Example 2

[0043] The working principle of this invention is as follows: Oil well produced fluid is fed into the filter tank 74 through the feed pipe 15 for filtration. After filtration, the operator can activate the hydraulic cylinder 48 and the vibration motor 59 via remote control. The hydraulic cylinder 48 drives the push rod 49 upward, which in turn moves the lifting lug 54 upward. The lifting lug 54 then moves the slider 55 within the first optical axis 56, causing the filter screen outer frame 16 to flip. The vibration motor 59 drives the vibration motor shaft 58 to rotate, which in turn rotates the cam 57. The cam 57 then vibrates the side plates 51 up and down, causing the symmetrically distributed side plates 51 to vibrate up and down, which in turn vibrates the filter screen 17, thus allowing the filtered residue to be filtered. The slag falls through the slag discharge plate 18 into the third collection box 13 while vibrating, completing the slag removal mechanism function. The filtered oil well fluid can be pumped into the feed trough 82 between the bend 23 and the rotating shaft 20 through the booster valve 66, and then enters the housing 24 through several evenly distributed rectangular openings 43. At this time, the worker can start the drive motor 7 with the remote control to drive the drive motor shaft 9 to rotate. The drive motor shaft 9 rotates, which drives the pulley 33 to rotate. The pulley 33 rotates, which drives the belt 34 to move. The belt 34 moves, which drives several evenly distributed pulley pieces 35 to rotate. The pulley pieces 35 rotate, which drives the stepped disc 8 to rotate. The stepped disc 8 rotates, which drives the connecting shaft 19 to rotate. The connecting shaft 19 rotates, which drives the rotating shaft 20 to rotate. The rotating shaft 20 rotates, which drives the belt 33 to rotate. The rotating shaft sleeve 47 drives several evenly distributed blades 37, conical partition rings 39, and circular partitions 40 to rotate, thereby separating the oil well produced fluid under high-speed rotation. Oil and gas are thrown into the oil outlet 21 through the oil outlet port 28 of the oil outlet ring 29 and flow into the first collection box 3 through the oil outlet pipe 80. Water is thrown into the water outlet 22 through the water outlet port 83 of the water outlet ring 44 and flow into the second collection box 4 through the water outlet pipe 81, thus achieving the function of extracting reinjected water. To control the flow rate of oil and water, the operator can use a remote control to activate the regulating motor 77, which drives the regulating motor shaft 78 to rotate. The rotating regulating motor shaft 78 drives the regulating gear 76 to rotate, which in turn drives the turntable 75 to rotate. The rotation of disc 75 drives the large flow orifice 88, medium flow orifice 89, and small flow orifice 90 to rotate, which in turn cooperate with oil outlet 28 and water outlet 83 to control the flow rate of oil and water, thus completing the function of the flow control mechanism. If the extraction accuracy is to be improved, the operator can turn on the variable speed motor 67 again via remote control to drive the variable speed motor shaft 68 to rotate. The rotation of the variable speed motor shaft 68 drives the lead screw 69 to rotate. The rotation of the lead screw 69 drives the conical body 87 to move to one end. The movement of the conical body 87 to one end drives the inclined block 71 to move to one end. The movement of the inclined block 71 to one end drives the telescopic rod 36 to move inward, thereby changing the speed of the blade 37 and completing the function of the variable speed mechanism. Thus, the function of a separation device for extracting reinjection water from the produced fluid of a high water-content oil well is completed.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims.

Claims

1. A centrifugal high-gravity oil well product fluid reinjection water on-site extraction device, comprising a slag removal mechanism, a filtration mechanism, and an oil-water separation mechanism, characterized in that, The filtration mechanism includes a filter tank with an inlet pipe connected to the top and a bend pipe connected to the bottom, which in turn connects to the feed tank. The oil-water separation mechanism includes a feed tank, a rotating conical shaft, rotating blades, a bushing, a rectangular opening, blades, a housing, a conical spacer ring, a water outlet ring, an oil outlet ring, and a flow control mechanism. The rotating conical shaft is fixedly connected inside the feed tank, and the rotating blades are fixedly connected to the outer side of the rotating conical shaft. The outer side of the rotating blades contacts the feed tank. The bushing is fixedly connected to the outer side of the middle of the rotating shaft, with one end of the bushing close to the feed tank. The outer side of the bushing is fixedly connected to several evenly distributed rectangular openings, each containing a feed inlet. The outer side of the bushing is fixedly connected to several evenly distributed blades, the outer sides of which contact the outer shell. Conical spacers are inserted between the blades, with the outer shell fixedly connected to the outer side of the larger ring of each conical spacer. A circular partition is located on one side of the smaller end of the conical spacer, and a bushing is inserted and fixedly connected to the center of the circular partition. A water outlet ring is fixedly connected to the side of the outer shell near the feed trough. The inside of the water outlet ring has several evenly distributed water outlets, and a rotating shaft is inserted inside the water outlet ring. Fixed connection; the end of the outer shell furthest from the water outlet ring is fixedly connected to the oil outlet ring, and a rotating shaft is inserted inside the oil outlet ring and fixedly connected thereto. The oil outlet ring has several evenly distributed oil outlets inside. Both the water outlet ring and the oil outlet ring are fixedly connected to the rotating shaft. The outer shell is fixedly connected to both the water outlet ring and the oil outlet ring, so that when the rotating shaft rotates, it drives the water outlet ring, the oil outlet ring, the outer shell, and the conical partition ring fixedly connected to the outer shell to rotate synchronously. The blades and circular partitions rotate synchronously with the rotating shaft via bushings. Each oil outlet is closer to the water outlet. The interior of one end of the outer casing is equipped with a flow control mechanism, which includes a turntable. The turntable is rotatably positioned outside a number of evenly distributed water outlets and oil outlets. The turntable is provided with a number of evenly distributed large flow holes, medium flow holes, and small flow holes. The large flow holes, medium flow holes, and small flow holes are all connected to the water outlets and oil outlets. One side of the turntable is meshed with an adjusting gear. One side of the adjusting gear is fixedly connected to an adjusting motor shaft. An adjusting motor is provided at the end of the adjusting motor shaft away from the adjusting gear. The adjusting motor is fixedly connected to the outer casing.

2. The centrifugal high-gravity oil well production fluid reinjection water on-site extraction device according to claim 1, characterized in that, One end of the oil outlet, water outlet, and feed inlet all leads into the interior of the outer casing. The other ends of the oil outlet and water outlet lead into the oil outlet trough and water outlet trough, respectively. Separation covers are provided on the outer sides of both ends of the rotating shaft and are rotatably connected. The oil outlet trough and water outlet trough are both located inside the separation covers. Oil outlet pipes and water outlet pipes are respectively provided at the lower ends of the oil outlet trough and water outlet trough of the separation covers. The oil outlet pipes and water outlet pipes are inserted into the base plate and fixedly connected. A first valve and a second valve are respectively provided on the outer sides of the oil outlet pipes and water outlet pipes. A first collection box and a second collection box are provided at the lower ends of the oil outlet pipes and water outlet pipes. A connecting shaft is fixedly connected to the end of the rotating shaft away from the separation cover. A stepped disc is fixedly connected to the end of the connecting shaft away from the rotating shaft. The outer sides of both ends of the stepped disc... The device includes a retainer that is rotatably connected to a base plate. A speed-changing mechanism is located inside the stepped disc. A pulley plate is meshed with the outer side of the speed-changing mechanism. A belt is provided on the outer side of the evenly distributed pulley plate. The end of the belt away from the stepped disc meshes with a pulley. One end of the pulley is fixedly connected to a drive motor shaft. A drive motor is located at the end of the drive motor shaft away from the pulley. The lower end of the drive motor is fixedly connected to a motor base. The lower end of the motor base is fixedly connected to a T-shaped slider. The T-shaped slider slides within a T-shaped groove located within the base plate. A first spring is fixedly connected to one side of the T-shaped slider, and the side of the first spring away from the T-shaped slider is fixedly connected to the base plate.

3. The centrifugal high-gravity oil well product fluid reinjection water on-site extraction device according to claim 2, characterized in that, The slag removal mechanism includes a filter screen frame. A hinge pin is inserted into one end of the filter screen frame and rotatably connected thereto. Both ends of the hinge pin are fixedly connected to a filter body. The other end of the filter screen frame rotates within a rotating groove. A filter screen is disposed inside the filter screen frame. Symmetrically distributed side plates are fixedly connected to both ends of the filter screen. The side plates slide in side grooves, which are symmetrically arranged within the filter screen frame. A second spring is fixedly connected to the upper end of each side plate, and the upper end of the second spring is fixedly connected to the filter screen frame. A cam is in contact with the lower end of each side plate. A vibration motor shaft is inserted into the middle of the cam and fixedly connected thereto. A vibration motor is disposed at the end of the vibration motor shaft furthest from the cam, and the end of the vibration motor furthest from the cam is fixedly connected to... A filter screen outer frame is attached. A first optical axis is fixedly connected to the lower groove of the end of the filter screen outer frame away from the hinge pin. A slider slides on the outer side of the first optical axis within the groove. A lifting lug is fixedly connected to the lower end of the slider. A push rod is hinged to the lower end of the lifting lug. A hydraulic cylinder is fixedly connected to the lower end of the push rod. The hydraulic cylinder is fixedly connected to the filter body. A baffle is provided on the side of the filter screen outer frame near the hinge pin. The baffle is inserted into the filter body. A gear is meshed with one end of the baffle. A rotating motor shaft is fixedly connected to one side of the gear. A rotating motor is provided on the end of the rotating motor shaft away from the gear. The rotating motor is fixedly installed in the filter body. A slag discharge plate is provided on the side of the baffle away from the filter screen outer frame.

4. The centrifugal high-gravity oil well product fluid reinjection water on-site extraction device according to claim 3, characterized in that, The speed-changing mechanism includes a speed-changing motor fixed inside a stepped disk. A speed-changing motor shaft is located on one side of the motor. A lead screw is fixedly connected to the side of the motor shaft away from the motor. The stepped disk is fixedly connected to the side of the lead screw away from the motor shaft. A ball screw pair is connected to a conical body on the outer side of the lead screw. Symmetrically distributed second optical shafts are inserted inside both ends of the conical body. The stepped disk is fixedly connected to both ends of the second optical shafts. Several evenly distributed inclined grooves are provided on the outer side of the conical body. A third optical shaft is fixedly connected inside the inclined grooves. An inclined block slides on the outer side of the second optical shaft. A telescopic rod is fixedly connected to the end of the inclined block away from the conical body. The telescopic rod slides on the stepped disk. A pulley is fixedly connected to the end of the telescopic rod away from the inclined block.

5. The centrifugal high-gravity oil well product fluid reinjection water in-situ extraction device according to claim 4, characterized in that, The turntable and baffle are respectively provided with teeth at the meshing points with the adjusting gear and the gear.

6. The centrifugal high-gravity oil well production fluid reinjection water on-site extraction device according to claim 5, characterized in that, The blade is wavy and has several evenly distributed circular holes inside.

7. The centrifugal high-gravity oil well production fluid reinjection water on-site extraction device according to claim 6, characterized in that, The outer side of the large ring of the conical spacer has several evenly distributed first grooves.

8. The centrifugal high-gravity oil well production fluid reinjection water on-site extraction device according to claim 7, characterized in that, The outer side of the circular partition is provided with several evenly distributed second grooves; the first groove, the second groove and the rectangular opening are all located in the middle between each blade; it also includes a third valve and a pressure boosting valve, and the opening and closing of the first valve, the second valve, the third valve, the pressure boosting valve, the regulating motor, the drive motor, the variable speed motor, the vibration motor, the hydraulic cylinder and the rotating motor are all controlled by a remote control.

9. A method for in-situ extraction of reinjection water from centrifugal high-gravity oil wells based on the centrifugal high-gravity oil well product water in-situ extraction device according to any one of claims 1-8, characterized in that, The oil well produced fluid is fed into the filter tank through the feed pipe for filtration. After filtration, the worker can remotely activate the hydraulic cylinder and vibration motor. The hydraulic cylinder moves the push rod upward, which in turn moves the lifting lug upward. The lifting lug then moves the slider within the first optical axis, causing the filter screen frame to flip. The vibration motor rotates its shaft, which in turn rotates the cam. The cam's rotation causes the side plates to vibrate up and down. The symmetrically distributed side plates vibrate up and down, causing the filter screen to vibrate up and down, thus allowing the filtered slag to vibrate and fall through the slag discharge plate onto the first... Inside the three collection tanks, the slag removal mechanism completes its function. The filtered oil well fluid can be pumped through a booster valve into the feed chute between the bend and the rotating shaft, and then enters the outer casing through several evenly distributed rectangular openings. At this time, the operator can use a remote control to start the drive motor, which in turn drives the drive motor shaft to rotate. The drive motor shaft rotates, which in turn drives the pulley to rotate. The pulley rotates, which in turn drives the belt to move. The belt moves, which in turn drives several evenly distributed pulley plates to rotate. The pulley plates rotate, which in turn drives the stepped disc to rotate. The stepped disc rotates, which in turn drives the connecting shaft to rotate. The connecting shaft rotates, which in turn drives the rotating shaft to rotate. The rotating shaft rotates, which in turn drives the bushing to rotate, thereby driving several... Evenly distributed blades, conical septa, and circular baffles rotate, separating the oil well's produced fluids at high speed. Oil and gas are thrown into the oil outlet of the oil outlet ring into the oil outlet groove and then flow into the first collection tank through the oil outlet pipe. Water is thrown into the water outlet groove through the water outlet of the water outlet ring and then flows into the second collection tank through the water outlet pipe, thus achieving the function of extracting reinjected water. To control the flow rate of oil and water, the operator can use a remote control to activate the regulating motor, which in turn rotates the regulating motor shaft. The rotating motor shaft then rotates the regulating gear, which in turn rotates the turntable, which in turn drives the flow rate... The measuring orifice, medium flow orifice, and small flow orifice rotate and cooperate with the oil outlet and water outlet to control the flow rate of oil and water, thus completing the function of the flow control mechanism. If the extraction accuracy is to be improved, the worker can turn on the variable speed motor again via remote control to drive the variable speed motor shaft to rotate. The rotation of the variable speed motor shaft drives the lead screw to rotate, and the rotation of the lead screw drives the cone to move to one end. The movement of the cone to one end drives the inclined block to move to one end, and the movement of the inclined block to one end drives the telescopic rod to move inward, thereby changing the speed of the blade and completing the function of the variable speed mechanism. Thus, the function of a separation device for extracting reinjection water from the produced fluid of a high water-cut oil well is completed.

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