Diluting and viscosity reducing device suitable for thickened oil recovery

Abstract

The invention discloses a dilution and viscosity reduction device suitable for thickened oil recovery, relates to the technical field of thickened oil recovery, aims to solve the technical problem of single function of a thickened oil recovery device, and comprises an oil pumping unit body, a mounting round block, an electric heating straight pipe unit, an electric heating communicating pipe unit, a driving structure, a dilution mechanism and a stirring mechanism, the driving structure is provided with a central driving end and an outer driving end, the input end of the diluting mechanism is fixedly connected with the central driving end, the input end of the stirring mechanism is fixedly connected with the outer driving end, and the diluting mechanism has a clearance pressurizing diluting state and a continuous pressurizing diluting state. When the heavy oil well is exploited, heavy oil is heated by arranging the electric heating straight pipe unit, the heavy oil is subjected to thin oil blending and viscosity reduction through the thin oil blending mechanism, the exploiting efficiency of the heavy oil well is conveniently improved, meanwhile, the heavy oil is subjected to viscosity reduction in the mode that thermal exploitation and cold exploitation are conducted at the same time when the heavy oil is exploited, functionality is improved, and the heavy oil well is convenient to use. The technical problem that an existing thickened oil recovery device is single in function is solved.

Description

Technical Field

[0001] The invention relates to the technical field of heavy oil production, and more particularly to a dilution and viscosity reduction device suitable for heavy oil production. Background Art

[0002] As an important part of the petroleum industry, the development of heavy oil production technology is of great significance for improving crude oil recovery and reducing production costs. At present, most heavy oil wells use pumping units to produce heavy oil. During the production process, the viscosity of the heavy oil needs to be reduced to below 600mpa.s to ensure the normal production of heavy oil wells. Heavy oil production technology is mainly divided into two categories: thermal production and cold production. Thermal production technology relies on heating to reduce the viscosity of heavy oil, while cold production technology reduces its viscosity by adding thin oil or other chemical reagents to the heavy oil, thereby improving the fluidity of the heavy oil and achieving effective production of heavy oil.

[0003] The thickness of heavy oil can be subdivided into conventional oil (crude oil with viscosity less than 100mPa·s, which has good fluidity and relatively low difficulty in production), ordinary heavy oil (crude oil with viscosity between 100 and 10000mPa·s, which has shown a certain viscosity, but its fluidity is still better than that of extra-heavy oil and super-heavy oil), super-heavy oil (crude oil with viscosity between 10000 and 50000mPa·s, which has high viscosity, poor fluidity and is difficult to produce) and super-heavy oil (crude oil with viscosity greater than 50000mPa·s, which has extremely high viscosity, like "black mud", and is almost unable to flow, making production extremely difficult). The existing thermal and cold production of heavy oil have the problem of single function, and it is difficult to adapt to the production of heavy oil wells with different viscosities. In view of this, we propose a dilution and viscosity reduction device suitable for heavy oil production. Summary of the invention

[0004] The purpose of the present invention is to provide a dilution and viscosity reduction device suitable for heavy oil production, so as to solve the technical problem of single function of heavy oil production device.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a dilution and viscosity reduction device suitable for heavy oil production, comprising an oil pumping unit body, a mounting round block is fixedly provided at the bottom end of the oil pumping unit body, an electric heating straight pipe unit is fixedly provided at the bottom end of the mounting round block, the electric heating straight pipe unit is connected with the extraction end of the oil pumping unit body through an electric heating connecting pipe unit, a driving structure is arranged at the top of the electric heating straight pipe unit, a dilution mechanism is arranged in the electric heating straight pipe unit, and a stirring mechanism is arranged in the gap between the dilution mechanism and the electric heating connecting pipe unit; the driving structure has a central driving end and an outer driving end, the dilution mechanism input end is fixedly connected to the central driving end, and the stirring mechanism input end is fixedly connected to the outer driving end; the dilution mechanism has an intermittent pressurization dilution state and a continuous pressurization dilution state. When the heavy oil well is mined, the present invention heats the heavy oil by arranging an electric heating straight pipe unit, and dilutes the heavy oil by a diluting mechanism to reduce the viscosity, so as to improve the mining efficiency of the heavy oil well. At the same time, the heavy oil is reduced in viscosity by simultaneously performing hot recovery and cold recovery during the heavy oil recovery, thereby improving the functionality and solving the technical problem of the single function of the current heavy oil recovery device.

[0006] Preferably, the driving structure includes a motor, a center gear and an inner gear ring, the motor is fixedly mounted on the oil pump body, the center gear is disposed at the top of the electric heating straight pipe unit, the center driving end is composed of the center gear, the center gear is rotationally connected to the mounting block via a connecting shaft A, the top of the connecting shaft A passes through the mounting block and is fixedly connected to the motor output shaft, the inner gear ring is rotationally mounted on the electric heating straight pipe unit relative to the center gear, the outer driving end is composed of the inner gear ring, the inner gear ring is meshed and connected to the center gear via a plurality of planetary gears arranged in a ring-shaped equidistant structure, and the planetary gears are rotationally connected to the mounting block via a connecting shaft B.

[0007] Preferably, the dilution mechanism includes a storage tube and an input duct, the storage tube is fixed at the bottom end of the mounting block, the storage tube is provided with a plurality of rotating cavities relative to the positions of the planetary gears, the storage tube is also connected with an input duct, the input duct is fixed at the top end of the electric heating straight tube unit, the output end of the input duct penetrates into the electric heating straight tube unit and is connected with the storage tube, a reverse rotation component is arranged at the lower part of the storage tube, a forward rotation component is arranged in the reverse rotation component, an intermittent boosting component is arranged at the reverse rotation component, a continuous boosting component is arranged at the bottom end of the intermittent boosting component, and a plurality of unidirectional injection units are evenly arranged at the bottom end of the storage tube.

[0008] Preferably, the reverse rotation component includes a limit ring, which is fixedly mounted on the lower part of the storage tube, and an inner circular block is rotatably connected to the limit ring. The outer edge surface of the inner circular block is adapted to the shape of the inner edge surface of the limit ring, and a limited circular cavity is provided at the center of the inner circular block. A plurality of empty grooves A are provided in a circular evenly spaced structure on the inner circular block, and a plurality of reverse arc grooves are provided on the outer edge surface of the inner circular block in a circular evenly spaced structure. The depth of the reverse arc groove gradually decreases in the counterclockwise direction, and the gap between the reverse arc groove and the limit ring constitutes a limit cavity A. An hourglass-shaped active column A is movably provided in the limit cavity A, and the middle part of the active column A is elastically connected to the deep part of the reverse arc groove by a spring A.

[0009] Preferably, the forward rotating component includes a limiting swivel, which is rotatably arranged in the limiting circular cavity, the outer edge surface of the limiting swivel is adapted to the shape of the inner edge surface of the limiting circular cavity, and a plurality of forward arc grooves are provided in a circular equidistant structure on the outer edge surface of the limiting swivel, the depth of the forward arc grooves gradually decreases along the clockwise direction, and the gap between the forward arc grooves and the limiting circular cavity constitutes a limiting cavity B, and the limiting cavity B is movably provided with an hourglass-shaped movable column B, and the middle part of the movable column B is elastically connected to the deep part of the forward arc groove by a spring B.

[0010] Preferably, the intermittent boosting component includes an adapting circular block, which is arranged below the inner circular block, and a plurality of empty grooves B are provided on the adapting circular block relative to the plurality of empty grooves A. The adapting circular block is fixedly connected to the inner circular block by a plurality of fan-shaped columns arranged in a ring-shaped equidistant structure, and the fan-shaped columns are adapted to the inner cavity of the storage tube, and the gaps between any two adjacent fan-shaped columns constitute a sliding cavity, and guide grooves are provided at both ends of the fan-shaped columns, and a connecting shaft C is rotatably provided at the top of the adapting circular block, and a lifting guide shaft is fixedly provided at the top of the connecting shaft C, and two semi-thread grooves are provided at the bottom of the lifting guide shaft, and the two semi-thread grooves are arranged in a symmetrical structure, and the two opposite ends of the two semi-thread grooves are connected to each other, and a sleeve is provided on the lifting guide shaft, and a hemispherical block is fixedly provided at the bottom of the sleeve, and the hemispherical block is movably connected to the two semi-thread grooves The cam is provided with a plurality of trapezoidal guide blocks on the outer edge surface of the bottom end of the sleeve in a circular and equidistant structure relative to the number of the plurality of fan-shaped columns, the trapezoidal guide blocks are slidably connected to the sliding cavity, an inclined guide groove is provided on the trapezoidal guide block, a booster block is movably provided on the sliding cavity, the centripetal end of the booster block is adapted to the trapezoidal guide block, a slider is fixed on the centripetal end of the booster block, the slider is slidably connected to the inclined guide groove, both ends of the booster block are provided with a movable groove, a guide column is movably connected to the movable groove, the guide column is elastically connected to the movable groove by a spring X, the guide column is movably connected to the guide groove, a connecting shaft D is fixed on the top end of the lifting guide shaft, the top end of the connecting shaft D passes through the inner circle block and is fixedly connected to the bottom end of the central gear, and the limiting swivel is fixedly connected to the connecting shaft D, and the connecting shaft D is rotatably connected to the inner circle block.

[0011] Preferably, the guide groove includes two vertical guide grooves arranged in parallel. The vertical guide groove on the centripetal side has a structure in which the groove depth gradually increases from top to bottom, and the vertical guide groove on the eccentric side has a structure in which the groove depth gradually decreases from top to bottom. Both ends of the two vertical guide grooves are connected by a horizontal guide groove.

[0012] Preferably, the continuous supercharging assembly comprises a connecting shaft E, the connecting shaft E is fixedly arranged at the bottom end of the adapting circular block, and a plurality of supercharging vortex blades are fixedly arranged on the outer edge surface of the connecting shaft E in an annular equidistant structure.

[0013] Preferably, the one-way injection unit comprises a movable column groove, which is provided at the bottom end of the storage tube, and the movable column groove is connected with the inner cavity of the storage tube through a truncated cone groove, and a chamfer is provided at one end of the truncated cone groove close to the inner cavity of the storage tube, and the movable column groove is connected with the inner cavity of the electric heating straight tube unit through a plurality of injection holes arranged in a circular equidistant structure, and a sliding column is movably connected in the movable column groove, and a mounting hole is provided in the movable column groove, and the mounting hole is elastically connected to the end of the movable column groove away from the truncated cone groove through a spring C, and a truncated cone block is fixedly provided at one end of the sliding column close to the truncated cone groove, and a spherical segment block is fixedly provided on the truncated cone block, and the truncated cone block is movably matched with the truncated cone groove.

[0014] Preferably, the stirring mechanism includes a mounting swivel, which is arranged in the electric heating straight tube unit relative to the electric heating connecting tube unit, and the two ends of the mounting swivel are respectively rotatably connected to the electric heating straight tube unit and the storage tube, the mounting swivel is fixedly connected to the inner gear ring through a connecting tube, and the bottom end of the mounting swivel is arranged in a ring-shaped structure with equal spacing and fixedly provided with a plurality of stirring rods.

[0015] The beneficial effects of the present invention are:

[0016] 1. When producing heavy oil wells, the present invention heats the heavy oil by setting an electric heating straight pipe unit, and thins and reduces the viscosity of the heavy oil by a thinning mechanism, so as to improve the production efficiency of the heavy oil wells. At the same time, the heavy oil is reduced in viscosity by simultaneously performing hot production and cold production during heavy oil production, thereby improving functionality and solving the technical problem of single function of current heavy oil production devices.

[0017] 2. The present invention also designs a dilution mechanism structure so that the viscosity reducing liquid is sprayed out from the one-way injection unit at high pressure, which can be better integrated into the heavy oil, and has continuous pressurization and intermittent pressurization effects, which are respectively suitable for viscosity reduction of relatively high viscosity heavy oil and relatively low viscosity heavy oil, further solving the technical problem of single function of current heavy oil production equipment.

[0018] 3. The present invention also adopts the structural design of the one-way injection unit so that before the liquid in the lower part of the storage tube is pressurized, the sliding column blocks the inlet of the injection hole under the elastic force of the spring C to prevent the thick oil from mixing with the liquid in the lower part of the storage tube. When the liquid in the lower part of the storage tube is pressurized, the spring C is compressed, the sliding column moves in the movable column groove and separates from the injection hole. At this time, the shapes of the truncated cone block and the spherical segment block can better guide the liquid in the lower part of the storage tube into the injection hole.

[0019] 4. The present invention sets a stirring mechanism so that the rotation of the inner gear ring can drive the stirring mechanism to rotate, so that the stirring rod stirs the thick oil, which is further beneficial to the mixing of the thin oil and the thick oil. The design of the driving structure makes the inner gear ring rotate at a reduced speed relative to the central gear, thereby reducing the rotational resistance of the motor output shaft and facilitating the continuous supercharging of the continuous supercharging assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a partial structural schematic diagram of the present invention;

[0022] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure of;

[0023] Figure 4 for Figure 3 Explosion diagram of some structures;

[0024] Figure 5 for Figure 2 A magnified schematic diagram of the local structure;

[0025] Figure 6 for Figure 4 Explosion diagram of some structures;

[0026] Figure 7 for Figure 6 A schematic diagram of a partial structural cross section;

[0027] Figure 8 It is a schematic diagram of the explosion structure of the intermittent pressurization assembly and the continuous pressurization assembly of the present invention;

[0028] Fig. 9 It is a schematic diagram of the lifting guide shaft and the half-thread groove structure of the present invention;

[0029] Fig.10 for Figure 8 Explosion diagram of some structures;

[0030] Fig.11 It is a schematic diagram of the fan-shaped column and guide groove structure of the present invention;

[0031] Fig.12 It is a schematic diagram of the explosion structure of the one-way injection unit of the present invention;

[0032] Fig.13 for Fig.12 A magnified schematic diagram of the local structure.

[0033] Description of the numbers in the figure:

[0034] 1. Pumping unit body; 2. Mounting round block; 3. Electric heating straight pipe unit; 4. Electric heating connecting pipe unit; 5. Driving structure; 6. Diluting mechanism; 7. Stirring mechanism;

[0035] 51. Motor; 52. Central gear; 53. Coupling A; 54. Internal gear ring; 55. Planetary gear; 56. Coupling B;

[0036] 61. Storage tube; 62. Rotating cavity; 63. Input conduit; 64. Reverse rotating assembly; 65. Forward rotating assembly; 66. Intermittent pressurizing assembly; 67. Continuous pressurizing assembly; 68. One-way injection unit;

[0037] 641, limiting ring; 642, inner circular block; 643, limiting circular cavity; 644, empty slot A; 645, reverse arc slot; 646, movable column A; 647, spring A;

[0038] 651, limit swivel; 652, forward arc groove; 653, movable column B; 654, spring B;

[0039] 661, matching round block; 662, empty slot B; 663, fan-shaped column; 664, guide slot; 665, connecting shaft C; 666, lifting guide shaft; 667, semi-threaded slot; 668, sleeve; 669, hemispherical block;

[0040] 6610, trapezoidal guide block; 6611, oblique guide groove; 6612, booster block; 6613, slider; 6614, movable groove; 6615, guide column; 6616, spring X; 6617, connecting shaft D;

[0041] 6641, vertical guide groove; 6642, horizontal guide groove;

[0042] 671, connecting shaft E; 672, supercharger vortex blade;

[0043] 681, movable column slot; 682, truncated cone slot; 683, injection hole; 684, sliding column; 685, mounting hole; 686, truncated cone block; 687, ball-slot block; 688, spring C;

[0044] 71. Install the swivel; 72. Connect the pipe; 73. Stirring rod. DETAILED DESCRIPTION

[0045] like Figures 1 to 13As shown, the present invention relates to a dilution and viscosity reduction device suitable for heavy oil production, comprising an oil pumping unit body 1, a mounting round block 2 is fixedly provided at the bottom end of the oil pumping unit body 1, an electric heating straight pipe unit 3 is fixedly provided at the bottom end of the mounting round block 2, the electric heating straight pipe unit 3 is connected to the extraction end of the oil pumping unit body 1 through an electric heating connecting pipe unit 4, a driving structure 5 is arranged at the top end of the electric heating straight pipe unit 3, a dilution mechanism 6 is arranged inside the electric heating straight pipe unit 3, and a stirring mechanism 7 is arranged in the gap between the dilution mechanism 6 and the electric heating connecting pipe unit 4; the driving structure 5 has a central driving end and an outer driving end, the input end of the dilution mechanism 6 is fixedly connected to the central driving end, and the input end of the stirring mechanism 7 is fixedly connected to the outer driving end; the dilution mechanism 6 has an intermittent pressurized dilution state and a continuous pressurized dilution state. The electric heating straight pipe unit 3 and the electric heating connecting pipe unit 4 of the present invention are both existing heating technologies in the field of viscosity reduction in heavy oil production, and will not be described in detail here.

[0046] In the embodiment of the present invention, the driving structure 5 includes a motor 51, a central gear 52 and an inner gear ring 54. The motor 51 is fixed on the pumping unit body 1, and the central gear 52 is arranged at the top of the electric heating straight pipe unit 3. The central driving end is composed of the central gear 52. The central gear 52 is rotatably connected with the mounting round block 2 through the connecting shaft A53. The top of the connecting shaft A53 passes through the mounting round block 2 and is fixedly connected with the output shaft of the motor 51. The inner gear ring 54 is rotatably arranged on the electric heating straight pipe unit 3 relative to the central gear 52. The external driving end is composed of the inner gear ring 54. The inner gear ring 54 is meshed and connected with the central gear 52 through a plurality of planetary gears 55 arranged in an annular equidistant structure. The planetary gears 55 are rotatably connected with the mounting round block 2 through the connecting shaft B56. Through the above arrangement, the present invention controls the rotation of the output shaft of the motor 51 through the external control mechanism, and the connecting shaft A53 drives the central gear 52 to rotate, so that the plurality of planetary gears 55 rotate at the same time, causing the inner gear ring 54 to rotate relative to the electric heating straight pipe unit 3.

[0047] In the embodiment of the present invention, the dilution mechanism 6 includes a storage tube 61 and an input conduit 63. The storage tube 61 is fixed at the bottom of the mounting round block 2. The storage tube 61 is provided with a plurality of rotating cavities 62 at positions relative to the plurality of planetary gears 55. The storage tube 61 is also connected with an input conduit 63. The input conduit 63 is fixed at the top of the electric heating straight tube unit 3. The output end of the input conduit 63 penetrates into the electric heating straight tube unit 3 and is connected with the storage tube 61. A reverse rotation component 64 is arranged at the bottom of the storage tube 61. A forward rotation component 65 is arranged in the reverse rotation component 64. An intermittent boosting component 66 is arranged in the reverse rotation component 64. A continuous boosting component 67 is arranged at the bottom of the intermittent boosting component 66. A plurality of one-way injection units 68 are evenly arranged at the bottom of the storage tube 61. The present invention makes the storage tube 61 unable to rotate by fixedly connecting the storage tube 61 to the mounting round block 2. The input conduit 63 is provided to connect to an external liquid conveying mechanism to convey thin oil or other viscosity reducing chemical agents into the storage tube 61.

[0048] In an embodiment of the present invention, the reverse rotation component 64 includes a limit ring 641, which is fixedly arranged at the lower part of the storage tube 61. An inner circular block 642 is rotatably connected to the limit ring 641. The outer edge surface of the inner circular block 642 is adapted to the shape of the inner edge surface of the limit ring 641. A limited circular cavity 643 is provided at the center of the inner circular block 642. A plurality of empty grooves A644 are provided in a circular equidistant structure on the inner circular block 642. A plurality of reverse arc grooves 645 are provided on the outer edge surface of the inner circular block 642 in a circular equidistant structure. The depth of the reverse arc groove 645 gradually decreases in the counterclockwise direction. The gap between the reverse arc groove 645 and the limit ring 641 constitutes a limit cavity A. An hourglass-shaped movable column A646 is movably provided in the limit cavity A. The middle part of the movable column A646 is elastically connected to the deep part of the reverse arc groove 645 by a spring A647. Through the above arrangement, the present invention enables, in the initial state, under the elastic force of the spring A647, the movable column A646 is located in the middle position of the limit cavity A, and the two ends of the movable column A646 are respectively in contact with the reverse arc groove 645 and the limit ring 641. When the inner circular block 642 rotates in the forward direction, the movable column A646 has a force to move in the shallow part in the forward direction of the reverse arc groove 645, so that the limit ring 641 clamps the inner circular block 642 through the movable column A646 to form a relatively fixed structure. Since the limit ring 641 is fixed on the storage tube 61 which cannot rotate, the inner circular block 642 cannot rotate in the forward direction. When the inner circular block 642 rotates in the reverse direction, the movable column A646 has a force to move in the deep part in the reverse direction of the reverse arc groove 645, which will not have a significant impact on the rotation of the inner circular block 642.

[0049] In an embodiment of the present invention, the forward rotating component 65 includes a limiting swivel 651, which is rotatably arranged in the limiting circular cavity 643. The outer edge surface of the limiting swivel 651 is adapted to the shape of the inner edge surface of the limiting circular cavity 643. A plurality of forward arc grooves 652 are provided in a circular equidistant structure on the outer edge surface of the limiting swivel 651. The depth of the forward arc grooves 652 gradually decreases along the clockwise direction. The gap between the forward arc grooves 652 and the limiting circular cavity 643 constitutes a limiting cavity B. The limiting cavity B is movably provided with an hourglass-shaped movable column B653. The middle part of the movable column B653 is elastically connected to the deep part of the forward arc groove 652 by a spring B654. Through the above arrangement, the present invention has the same principle as the reverse rotation component 64, and the limiting swivel 651 cannot rotate reversely relative to the limiting circular cavity 643. Therefore, when the limiting swivel 651 rotates forward, the limiting swivel 651 rotates forward relative to the inner circular block 642, and the inner circular block 642 cannot rotate forward. When the limiting swivel 651 rotates reversely, the limiting swivel 651 drives the inner circular block 642 to rotate reversely relative to the limiting ring 641.

[0050] In the embodiment of the present invention, the intermittent pressurizing assembly 66 includes an adapting circular block 661, which is arranged below the inner circular block 642. A plurality of empty slots B662 are provided on the adapting circular block 661 at positions corresponding to the plurality of empty slots A644. The adapting circular block 661 is fixedly connected to the inner circular block 642 through a plurality of fan-shaped columns 663 arranged in an annular equidistant structure. The fan-shaped columns 663 are adapted to the inner cavity of the storage tube 61. The gaps between any two adjacent fan-shaped columns 663 form a sliding cavity. Guide slots 664 are provided at both ends of the fan-shaped columns 663. A connecting shaft C66 is provided at the top of the adapting circular block 661 for rotation. 5. A lifting guide shaft 666 is fixedly arranged at the top of the connecting shaft C665. Two semi-thread grooves 667 are arranged at the bottom of the lifting guide shaft 666. The two semi-thread grooves 667 are arranged in a symmetrical structure, and the two opposite ends of the two semi-thread grooves 667 are connected to each other. A sleeve 668 is sleeved on the lifting guide shaft 666. A hemispherical block 669 is fixedly arranged at the bottom end of the sleeve 668. The hemispherical block 669 is movably matched with the two semi-thread grooves 667. A number of trapezoidal guide blocks 6610 are fixedly arranged on the outer edge surface of the bottom end of the sleeve 668 in a circular structure with equal spacing relative to the number of fan-shaped columns 663. The trapezoidal guide blocks 6610 slide with the sliding cavity. The trapezoidal guide block 6610 is provided with an oblique guide groove 6611, and a booster block 6612 is movably provided on the slide cavity. The centripetal end of the booster block 6612 is adapted to the trapezoidal guide block 6610, and a slider 6613 is fixed to the centripetal end of the booster block 6612. The slider 6613 is slidably connected to the oblique guide groove 6611. Both ends of the booster block 6612 are provided with movable grooves 6614. The movable groove 6614 is movably connected with a guide column 6615. The guide column 6615 is elastically connected to the movable groove 6614 through a spring X6616. The guide column 6615 is movably connected to the guide groove 664. The lifting guide shaft 666 A connecting shaft D6617 is fixedly provided at the top, the top of which passes through the inner circular block 642 and is fixedly connected to the bottom end of the central gear 52, and the limiting swivel 651 is fixedly connected to the connecting shaft D6617, and the connecting shaft D6617 is rotatably connected to the inner circular block 642; the guide groove 664 includes two vertical guide grooves 6641 arranged in parallel, the vertical guide groove 6641 on the centripetal side is a structure in which the groove depth gradually increases from top to bottom, and the vertical guide groove 6641 on the eccentric side is a structure in which the groove depth gradually decreases from top to bottom, and both ends of the two vertical guide grooves 6641 are connected by a horizontal guide groove 6642.The present invention arranges the adapting circular block 661 and the inner circular block 642 to be fixedly connected through a plurality of fan-shaped columns 663 arranged in a circular equidistant structure, so that the adapting circular block 661, the inner circular block 642 and the plurality of fan-shaped columns 663 rotate synchronously, so that when the connecting shaft D6617 rotates in the reverse direction, the connecting shaft D6617 drives the limit rotating ring 651 to drive the inner circular block 642 to rotate in the reverse direction relative to the limit ring 641, and at this time, the entire intermittent boosting assembly 66 and the overall state will not change, and when the connecting shaft D6617 rotates in the forward direction, the limit rotating ring 651 rotates in the forward direction relative to the inner circular block 642, and the inner circular block 642 cannot rotate in the forward direction, so that the adapting circular block 661, the inner circular block 642 and the plurality of fan-shaped columns 663 rotate synchronously, and the connecting shaft D6617 rotates in the reverse direction, and the inner circular block 642 cannot rotate in the forward direction, so that the adapting circular block 661, the inner circular block 642 and the plurality of fan-shaped columns 663 rotate synchronously, and ... The round block 661 and several fan-shaped columns 663 cannot rotate, and the connecting shaft D6617 drives the lifting guide shaft 666 to rotate and the semi-threaded groove 667, so that the hemispherical block 669 moves relative to the two semi-threaded grooves 667, thereby making the sleeve 668 and the trapezoidal guide block 6610 perform lifting movements, and the trapezoidal guide block 6610 slides up and down relative to the sliding cavity. During this process, when the hemispherical block 669 is located at the bottom end of the semi-threaded groove 667, the sleeve 668 is located at the lowest position that can be lifted and lowered, and the guide column 6615 is located at the eccentric end of the horizontal and vertical guide groove 6642 below. Since the two vertical guide grooves 6641 of the guide groove 664 and the two horizontal and vertical guide grooves 6642 form the following. Fig.11 As shown in the stepped structure, during the rising process of the sleeve 668, the booster block 6612 slides relative to the inclined guide groove 6611 along with the slider 6613, and the guide column 6615 moves toward the centripetal end at the bottom, so that the liquid in the upper part of the storage tube 61 can flow into the lower part of the storage tube 61 from the gap between the storage tube 61, the trapezoidal guide block 6610 and the fan-shaped column 663. When the guide column 6615 moves to the centripetal end of the horizontal and vertical guide grooves 6642 located below and enters the vertical guide groove 6641 located at the centripetal end, the booster block 6612 rises together with the trapezoidal guide block 6610. At this time, the guide column 6615 is always connected to the horizontal and vertical guide grooves 6642 under the elastic force of the spring X6616. When the guide column 6615 moves to the centripetal end of the horizontal and vertical guide grooves 6642 located above, it can be seen from the above principle that the trapezoidal guide block 6610 first moves eccentrically to restore to Figure 6 In the state shown, it then moves up and down together with the trapezoidal guide block 6610, pressurizing the liquid in the lower part of the storage pipe 61, so that the viscosity-reducing liquid is sprayed out from the one-way injection unit 68 at a high pressure, which can be better integrated into the heavy oil, and with the continuous rotation of the connecting shaft D6617, intermittent dilution and viscosity reduction are achieved, which is suitable for viscosity reduction of relatively low-viscosity heavy oil.

[0051] In an embodiment of the present invention, the continuous supercharging assembly 67 includes a coupling E671, which is fixed at the bottom end of the adapter block 661, and a plurality of supercharging vortex blades 672 are fixed in an annular equidistant structure on the outer edge of the coupling E671. The present invention makes the above arrangement such that when the coupling D6617 rotates in the reverse direction, the adapter block 661 drives the continuous supercharging assembly 67 to rotate continuously, and the rotation of the supercharging vortex blades 672 continuously supercharges the liquid at the bottom of the storage tube 61, which is suitable for reducing the viscosity of relatively high-viscosity heavy oil. It is worth noting that in this state, the gap between the storage tube 61, the trapezoidal guide block 6610 and the fan-shaped column 663 needs to be controlled so that the liquid at the top of the storage tube 61 can flow into the bottom of the storage tube 61.

[0052] In an embodiment of the present invention, the one-way injection unit 68 includes a movable column groove 681, which is opened at the bottom end of the storage tube 61. The movable column groove 681 is connected to the inner cavity of the storage tube 61 through a truncated groove 682. The truncated groove 682 is provided with a chamfer at one end close to the inner cavity of the storage tube 61. The movable column groove 681 is connected to the inner cavity of the electric heating straight tube unit 3 through a plurality of injection holes 683 arranged in a ring-shaped equidistant structure. A sliding column 684 is movably connected in the movable column groove 681. An installation hole 685 is opened in the movable column groove 681. The installation hole 685 is elastically connected to the end of the movable column groove 681 away from the truncated groove 682 through a spring C688. A truncated block 686 is fixedly provided at one end of the sliding column 684 close to the truncated groove 682. A spherical block 687 is fixedly provided on the truncated block 686. The truncated block 686 and the truncated groove 682 are movably matched. The present invention adopts the structural design of the one-way injection unit 68, so that before the liquid in the lower part of the storage tube 61 is pressurized, under the elastic force of the spring C688, the sliding column 684 blocks the entrance of the injection hole 683 to prevent the heavy oil from mixing with the liquid in the lower part of the storage tube 61. When the liquid in the lower part of the storage tube 61 is pressurized, the spring C688 is compressed, the sliding column 684 moves in the movable column groove 681 and disengages from the injection hole 683. At this time, the shapes of the truncated cone block 686 and the spherical segment block 687 can better guide the liquid in the lower part of the storage tube 61 into the injection hole 683.

[0053] In the embodiment of the present invention, the stirring mechanism 7 includes a mounting swivel 71, which is arranged in the electric heating straight tube unit 3 relative to the electric heating connecting tube unit 4, and the two ends of the mounting swivel 71 are rotatably connected to the electric heating straight tube unit 3 and the storage tube 61 respectively, and the mounting swivel 71 is fixedly connected to the inner gear ring 54 through a connecting tube 72, and the bottom end of the mounting swivel 71 is arranged in a ring-shaped structure with equal spacing and fixed with a plurality of stirring rods 73. The present invention sets the stirring mechanism 7 so that the rotation of the inner gear ring 54 can drive the stirring mechanism 7 to rotate, so that the stirring rod 73 stirs the heavy oil, which is further conducive to the mixing of the thin oil and the heavy oil, and the design of the driving structure 5 makes the inner gear ring 54 rotate at a reduced speed relative to the central gear 52, thereby reducing the rotation resistance of the output shaft of the motor 51 and facilitating the continuous supercharging of the continuous supercharging component 67.

[0054] Working principle: This embodiment provides a dilution and viscosity reduction device suitable for heavy oil production. When in use, the pumping unit body 1 extracts the heavy oil from the bottom end of the electric heating straight pipe unit 3 and the electric heating connecting pipe unit 4 in sequence to heat the heavy oil;

[0055] Select intermittent boost and dilution state or continuous boost and dilution state according to the viscosity of heavy oil;

[0056] The output shaft of the motor 51 is controlled to rotate in the forward direction through an external control mechanism, the connecting shaft A53 drives the central gear 52 to rotate in the forward direction, the limit swivel 651 rotates in the forward direction relative to the inner circle block 642, and the inner circle block 642 cannot rotate in the forward direction, so that the adapting circle block 661 and a plurality of fan-shaped columns 663 cannot rotate, and the connecting shaft D6617 drives the lifting guide shaft 666 to rotate and the semi-thread groove 667, so that the hemispherical block 669 moves relative to the two semi-thread grooves 667, so that the sleeve 668 and the trapezoidal guide block 6610 perform lifting and lowering movements, and the trapezoidal guide block 6610 slides up and down relative to the sliding cavity. In this process, when the hemispherical block 669 is located at the bottom end of the semi-thread groove 667, the sleeve 668 is located at the lowest position that can be lifted and lowered, and the guide column 6615 is located at the eccentric end of the horizontal and vertical guide groove 6642 below. Since the two vertical guide grooves 6641 of the guide groove 664 and the two horizontal and vertical guide grooves 6642 form a Fig.11As shown in the stepped structure, during the rising process of the sleeve 668, the booster block 6612 slides relative to the inclined guide groove 6611 along with the slider 6613, and the guide column 6615 moves toward the centripetal end at the bottom, so that the liquid in the upper part of the storage tube 61 can flow into the lower part of the storage tube 61 from the gap between the storage tube 61, the trapezoidal guide block 6610 and the fan-shaped column 663. When the guide column 6615 moves to the centripetal end of the horizontal and vertical guide grooves 6642 located below and enters the vertical guide groove 6641 located at the centripetal end, the booster block 6612 rises together with the trapezoidal guide block 6610. At this time, the guide column 6615 is always connected to the horizontal and vertical guide grooves 6642 under the elastic force of the spring X6616. When the guide column 6615 moves to the centripetal end of the horizontal and vertical guide grooves 6642 located above, it can be seen from the above principle that the trapezoidal guide block 6610 first moves eccentrically to restore to Figure 6 In the state shown, it then moves downward and upward with the trapezoidal guide block 6610, pressurizing the liquid in the lower part of the storage pipe 61, so that the viscosity-reducing liquid is ejected from the one-way injection unit 68 at a high pressure, which can be better integrated into the heavy oil, and intermittent dilution and viscosity reduction are achieved with the continuous rotation of the connecting shaft D6617; at the same time, the rotation of the central gear 52 drives the simultaneous rotation of the plurality of planetary gears 55, causing the internal gear ring 54 to rotate relative to the electric heating straight pipe unit 3, and the stirring mechanism 7 to rotate, so that the stirring rod 73 stirs the heavy oil, which is further conducive to the mixing of the thin oil and the heavy oil;

[0057] When high-viscosity heavy oil is extracted, a continuous pressurization and dilution state is adopted. According to the above principle, the gaps between the storage tube 61, the trapezoidal guide block 6610 and the fan-shaped column 663 are adjusted so that the liquid in the upper part of the storage tube 61 can flow into the lower part of the storage tube 61. The output shaft of the motor 51 is controlled to rotate in reverse through an external control mechanism, and the connecting shaft A53 drives the central gear 52 to rotate in reverse. The adapter block 661 drives the continuous pressurization component 67 to rotate continuously, and the rotation of the pressurization vortex blade 672 continuously pressurizes the liquid in the lower part of the storage tube 61. At the same time, the stirring mechanism 7 rotates, and the stirring rod 73 stirs the heavy oil.

[0058] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A dilution and viscosity reduction device suitable for heavy oil production, characterized in that: The invention comprises an oil pumping unit body (1), a mounting round block (2) is fixedly provided at the bottom end of the oil pumping unit body (1), an electric heating straight pipe unit (3) is fixedly provided at the bottom end of the mounting round block (2), the electric heating straight pipe unit (3) is connected to the extraction end of the oil pumping unit body (1) via an electric heating connecting pipe unit (4), a driving structure (5) is arranged at the top end of the electric heating straight pipe unit (3), a dilution mechanism (6) is arranged inside the electric heating straight pipe unit (3), and a stirring mechanism (7) is arranged in the gap between the dilution mechanism (6) and the electric heating connecting pipe unit (4); The driving structure (5) has a central driving end and an outer driving end, the input end of the dilution mechanism (6) is fixedly connected to the central driving end, and the input end of the stirring mechanism (7) is fixedly connected to the outer driving end; The dilution mechanism (6) has an intermittent pressurized dilution state and a continuous pressurized dilution state.

2. The dilution and viscosity reduction device suitable for heavy oil production according to claim 1, characterized in that: The driving structure (5) comprises a motor (51), a center gear (52) and an inner gear ring (54). The motor (51) is fixedly mounted on the oil pump body (1). The center gear (52) is arranged at the top of the electric heating straight pipe unit (3). The center driving end is composed of the center gear (52). The center gear (52) is rotationally connected to the mounting block (2) via a connecting shaft A (53). The top of the connecting shaft A (53) passes through the mounting block (2) and is fixedly connected to the output shaft of the motor (51). The inner gear ring (54) is rotationally mounted on the electric heating straight pipe unit (3) relative to the center gear (52). The outer driving end is composed of the inner gear ring (54). The inner gear ring (54) is meshedly connected to the center gear (52) via a plurality of planetary gears (55) arranged in an annular structure with equal spacing. The planetary gears (55) are rotationally connected to the mounting block (2) via a connecting shaft B (56).

3. The dilution and viscosity reduction device suitable for heavy oil production according to claim 2, characterized in that: The dilution mechanism (6) comprises a storage tube (61) and an input conduit (63). The storage tube (61) is fixedly arranged at the bottom end of the mounting round block (2). The storage tube (61) is provided with a plurality of rotating cavities (62) at positions relative to the plurality of planetary gears (55). The input conduit (63) is fixedly arranged at the top end of the electric heating straight tube unit (3). The output end of the input conduit (63) penetrates into the electric heating straight tube unit (3) and is connected to the storage tube (61). A reverse rotating component (64) is arranged at the bottom of the storage tube (61). A forward rotating component (65) is arranged in the reverse rotating component (64). An intermittent boosting component (66) is arranged in the reverse rotating component (64). A continuous boosting component (67) is arranged at the bottom end of the intermittent boosting component (66). A plurality of one-way injection units (68) are evenly arranged at the bottom end of the storage tube (61).

4. The dilution and viscosity reduction device suitable for heavy oil production according to claim 3 is characterized in that: The reverse rotation component (64) comprises a limiting ring (641), the limiting ring (641) is fixedly arranged at the lower part of the storage tube (61), an inner circular block (642) is rotatably connected to the limiting ring (641), the outer edge surface of the inner circular block (642) is adapted in shape to the inner edge surface of the limiting ring (641), a limiting circular cavity (643) is provided at the center of the inner circular block (642), and a plurality of empty grooves A (644) are provided on the inner circular block (642) in an annular structure with equal spacing. ), a plurality of reverse arc grooves (645) are formed in an annular and evenly spaced structure on the outer edge surface of the inner circular block (642), the depth of the reverse arc grooves (645) gradually decreases along the counterclockwise direction, the gap between the reverse arc grooves (645) and the limiting ring (641) forms a limiting cavity A, an hourglass-shaped movable column A (646) is movably provided in the limiting cavity A, and the middle part of the movable column A (646) is elastically connected to the deep part of the reverse arc groove (645) through a spring A (647).

5. The dilution and viscosity reduction device suitable for heavy oil production according to claim 4, characterized in that: The forward rotating assembly (65) comprises a limiting rotating ring (651), wherein the limiting rotating ring (651) is rotatably arranged in the limiting circular cavity (643), wherein the outer edge surface of the limiting rotating ring (651) is adapted in shape to the inner edge surface of the limiting circular cavity (643), wherein a plurality of forward arc grooves (652) are provided in an annular equidistant structure on the outer edge surface of the limiting rotating ring (651), wherein the depth of the forward arc grooves (652) gradually decreases along the clockwise direction, and the gap between the forward arc grooves (652) and the limiting circular cavity (643) forms a limiting cavity B, wherein the limiting cavity B is movably provided with an hourglass-shaped movable column B (653), wherein the middle portion of the movable column B (653) is elastically connected to the deep portion of the forward arc groove (652) via a spring B (654).

6. The dilution and viscosity reduction device suitable for heavy oil production according to claim 5, characterized in that: The intermittent pressurizing assembly (66) comprises an adapting circular block (661), the adapting circular block (661) being arranged below the inner circular block (642), the adapting circular block (661) being provided with a plurality of empty slots B (662) at positions corresponding to the plurality of empty slots A (644), the adapting circular block (661) being fixedly connected to the inner circular block (642) via a plurality of fan-shaped columns (663) arranged in an annular structure with equal spacing, the fan-shaped columns (663) being adapted to the inner cavity of the storage tube (61), the gaps between any two adjacent fan-shaped columns (663) forming a sliding cavity, and guide grooves (664) being provided at both ends of the fan-shaped columns (663). ), a connecting shaft C (665) is rotatably provided at the top of the adapting circular block (661), a lifting guide shaft (666) is fixedly provided at the top of the connecting shaft C (665), two semi-thread grooves (667) are provided at the bottom of the lifting guide shaft (666), the two semi-thread grooves (667) are arranged in a symmetrical structure, and the two opposite ends of the two semi-thread grooves (667) are connected to each other, a sleeve (668) is sleeved on the lifting guide shaft (666), a hemispherical block (669) is fixedly provided at the bottom of the sleeve (668), the hemispherical block (669) is movably matched with the two semi-thread grooves (667), and the outer edge surface of the bottom end of the sleeve (668) is A plurality of trapezoidal guide blocks (6610) are fixedly arranged in a circular equidistant structure relative to the plurality of fan-shaped columns (663); the trapezoidal guide blocks (6610) are slidably connected to the sliding cavity; an inclined guide groove (6611) is provided on the trapezoidal guide block (6610); a booster block (6612) is movably arranged on the sliding cavity; the centripetal end of the booster block (6612) is adapted to the trapezoidal guide block (6610); a slider (6613) is fixedly arranged on the centripetal end of the booster block (6612); the slider (6613) is slidably connected to the inclined guide groove (6611); movable grooves (6614) are provided at both ends of the booster block (6612); A guide column (6615) is movably connected to the movable groove (6614), and the guide column (6615) is elastically connected to the movable groove (6614) via a spring X (6616). The guide column (6615) is movably connected to the guide groove (664). A connecting shaft D (6617) is fixedly provided at the top end of the lifting guide shaft (666). The top end of the connecting shaft D (6617) passes through the inner circular block (642) and is fixedly connected to the bottom end of the central gear (52). The limiting swivel (651) is fixedly connected to the connecting shaft D (6617), and the connecting shaft D (6617) is rotatably connected to the inner circular block (642).

7. The dilution and viscosity reduction device suitable for heavy oil production according to claim 6, characterized in that: The guide groove (664) comprises two vertical guide grooves (6641) arranged in parallel. The vertical guide groove (6641) on the centripetal side has a structure in which the groove depth gradually increases from top to bottom, and the vertical guide groove (6641) on the eccentric side has a structure in which the groove depth gradually decreases from top to bottom. Both ends of the two vertical guide grooves (6641) are connected via a horizontal guide groove (6642).

8. The dilution and viscosity reduction device suitable for heavy oil production according to claim 7, characterized in that: The continuous supercharging component (67) comprises a connecting shaft E (671), wherein the connecting shaft E (671) is fixedly arranged at the bottom end of the adapting circular block (661), and a plurality of supercharging vortex blades (672) are fixedly arranged in an annular structure with equal spacing on the outer edge surface of the connecting shaft E (671).

9. The dilution and viscosity reduction device suitable for heavy oil production according to claim 8, characterized in that: The one-way injection unit (68) comprises a movable column groove (681), the movable column groove (681) is opened at the bottom end of the storage tube (61), the movable column groove (681) is connected to the inner cavity of the storage tube (61) through a truncated cone groove (682), and the truncated cone groove (682) is provided with a chamfer at one end close to the inner cavity of the storage tube (61). The movable column groove (681) is connected to the inner cavity of the electric heating straight tube unit (3) through a plurality of injection holes (683) arranged in a ring-shaped equidistant structure. 1) is movably connected with a sliding column (684), a mounting hole (685) is opened in the movable column groove (681), the mounting hole (685) and the movable column groove (681) are elastically connected to the end away from the truncated cone groove (682) through a spring C (688), a truncated cone block (686) is fixedly provided at the end of the sliding column (684) close to the truncated cone groove (682), a spherical segment block (687) is fixedly provided on the truncated cone block (686), and the truncated cone block (686) is movably matched with the truncated cone groove (682).

10. The dilution and viscosity reduction device suitable for heavy oil production according to claim 9, characterized in that: The stirring mechanism (7) comprises a mounting swivel (71), wherein the mounting swivel (71) is arranged in the electric heating straight tube unit (3) relative to the electric heating connecting tube unit (4), and the two ends of the mounting swivel (71) are rotatably connected to the electric heating straight tube unit (3) and the storage tube (61) respectively, and the mounting swivel (71) is fixedly connected to the inner gear ring (54) via a connecting tube (72), and a plurality of stirring rods (73) are fixedly arranged at the bottom end of the mounting swivel (71) in an annular structure with equal spacing.

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