A steam, carbon dioxide, and nitrogen combined injection energy-saving and production-increasing oil production device

Abstract

The present invention discloses a steam, carbon dioxide, and nitrogen co-injection energy-saving and production-increasing oil production device, which relates to the technical field of production-increasing oil production devices. The device comprises a combination valve body, a connecting pipe, a connecting head, a first gas injection well pipe, and a second gas injection well pipe. The connecting pipe and the connecting head are in three groups, and the combination valve body is respectively connected to the connecting head of the first gas injection well pipe through the connecting pipe. The present invention can isolate the heat of steam, carbon dioxide, and nitrogen. The heat transfer between high-temperature steam and carbon dioxide and nitrogen can compensate for the pressure loss of heat carbon dioxide and nitrogen, thereby improving the oil production or oil production efficiency, preventing the airflow injected into the oil field from flowing back into the second gas injection well pipe, and also preventing some oil from flowing back into the interior of the second gas injection well pipe. The airflow entering the oil field is fanned and dispersed, and especially when multiple airflows are injected, the various airflows can be mixed to make them uniform, so that the airflow is fully integrated into the oil.

Description

Technical Field

[0001] The invention relates to the technical field of production-increasing oil production devices, in particular to a steam, carbon dioxide, and nitrogen co-injection energy-saving production-increasing oil production device. Background Art

[0002] With the continuous growth of global energy demand, the development and utilization of oil resources remains an important part of the energy strategy of many countries. In order to improve the efficiency of oil extraction and reduce the impact on the environment, scientific researchers continue to research and develop new energy-saving and production-increasing oil production technologies. Steam, carbon dioxide and nitrogen flooding methods are widely used to increase oil well production. These methods inject steam, carbon dioxide or nitrogen into the oil layer to reduce the viscosity of crude oil and increase the pressure of the oil layer, thereby achieving the purpose of increasing production.

[0003] The oil production equipment in the existing technology often has problems such as complex equipment, cumbersome operation, and high maintenance costs. Traditional steam injection and gas injection equipment are often accompanied by heat energy and pressure loss during operation, resulting in low overall efficiency. Steam, carbon dioxide and nitrogen are in high-temperature or high-pressure states. When steam is injected into the gas injection well pipe, the steam heat cannot be insulated, which easily causes the steam energy inside the gas injection well pipe to be lost. In addition, carbon dioxide and nitrogen need to be injected into the oil field underground at high pressure. If the heat is lost while carbon dioxide and nitrogen are maintained in a high-pressure state, the gas pressure will drop, and the gas pressure injected into the oil field will not meet the requirements. Summary of the Invention

[0004] The object of the present invention is to provide a steam, carbon dioxide and nitrogen co-injection energy-saving and production-increasing oil production device to solve the problems raised in the above background technology.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A steam, carbon dioxide, and nitrogen combined injection energy-saving and production-increasing oil production device comprises a combination valve body, a connecting pipe, a connecting head, a gas injection well pipe 1 and a gas injection well pipe 2, the connecting pipe and the connecting head being in three groups, and the combination valve body is respectively connected to the connecting head of the gas injection well pipe 1 through the connecting pipe, and the gas injection well pipe 1 and the gas injection well pipe 2 are fixed to each other; an energy mixing structure is provided inside the gas injection well pipe 1 and the gas injection well pipe 2, and the energy mixing structure comprises a lifting assembly, and the lifting assembly comprises a triangular plate for blocking steam, carbon dioxide, and nitrogen, the triangular plate is welded to the inside of each section of the gas injection well pipe 1 and the gas injection well pipe 2, and two vertically arranged reserved grooves are provided inside the triangular plate, and the interiors of the two reserved grooves are both slidably connected with a lifting plate, and guide strips are provided on both edges of the lifting plate, and a row of heat dissipation plates are provided on the surface of the lifting plate, and two groups of fixing grooves are provided on the side walls of the triangular plate, and the positions of the fixing grooves and the heat dissipation plates are adapted to each other, the material of the triangular plate and the lifting plate are both metal materials that insulate heat energy, and the material of the heat dissipation plates is a heat-conducting material.

[0007] As a preferred technical solution of the present invention, a row of fixing holes are opened inside the lifting plate, two fixing rings are installed inside each fixing hole, the heat dissipation plate is located between the two fixing rings, and the two fixing rings are fixed to the lifting plate by bolts.

[0008] As a preferred technical solution of the present invention, when the heat dissipation plate is aligned with the fixed groove, the energy of steam, carbon dioxide and nitrogen is transferred from the fixed groove, and when the heat dissipation plate is staggered with the fixed groove, the energy of steam, carbon dioxide and nitrogen is isolated from each other.

[0009] As a preferred technical solution of the present invention, the energy mixing structure includes a driving assembly, which includes a motor, the motor is installed on the outer wall of the gas injection well pipe 1, the output end of the motor is connected to the rotating shaft through a coupling, and a rotating cam is installed at the end of the rotating shaft. A lifting horizontal plate is welded to the top of the lifting plate of the gas injection well pipe 1, and the edges of the lifting horizontal plate and the rotating cam are in contact with the lifting horizontal plate and the fixed top plate.

[0010] As a preferred technical solution of the present invention, the lifting distance of the lifting horizontal plate and the fixed top plate is twice the diameter of the fixed groove, and the rotation angle range of the rotating cam is -90° to 90°.

[0011] As a preferred technical solution of the present invention, the energy mixing structure also includes a connecting component, which includes a matching groove, the matching groove is arranged at the bottom end of the lifting plate, and the matching block is arranged at the top of the lifting plate. The shapes of the matching groove and the matching block match each other, and a connecting pin is provided at the intersection of the matching groove and the matching block. The lifting plates arranged up and down are connected by the connecting pin, and the heat dissipation plates of the lifting plates arranged up and down are synchronously overlapped or synchronously staggered.

[0012] As a preferred technical solution of the present invention, limit grooves are provided at the ends of the triangular plate and at the positions of the two lifting plates. A limit pin is rotated inside the limit groove, and the limit pin moves synchronously with the lifting plate. The limit pin is slidably connected to the inside of the limit groove, and the length of the limit groove is twice the diameter of the fixed groove.

[0013] As a preferred technical solution of the present invention, three groups of gas check structures are provided at the bottom end of the side wall of the lowest end of the triangular plate, and the gas check structure includes a connecting sleeve, which is welded to the inner wall of the gas injection well pipe 2 and the side wall of the triangular plate. The internal rotation of the connecting sleeve is connected to a connecting shaft, and the middle of the connecting shaft is connected to a swing plate 1 and a swing plate 2. The swing plate 1 and the swing plate 2 are symmetrically arranged on both sides of the connecting shaft. The cylindrical sleeve of the connecting shaft is provided with a torsion spring, and the two ends of the torsion spring are in contact with the lower surface of the swing plate 1 and the swing plate 2. Each side wall of the triangular plate is provided with two limit columns, and the swing plate 1 and the swing plate 2 are in contact with the limit columns.

[0014] As a preferred technical solution of the present invention, a gas dispersion structure is provided between the lower surface of each swing plate one and the lower surface of the swing plate two, and the gas dispersion structure includes two connecting hinges, which are respectively provided on the lower surfaces of the swing plate one and the swing plate two, and the two connecting hinges are both provided with connecting strip one and connecting strip two, an intermediate pin is connected in the middle of connecting strip one and connecting strip two, and one end of connecting strip one and one end of connecting strip two are both welded with swing fan blades.

[0015] As a preferred technical solution of the present invention, the two connecting hinges are rotatably connected to one end of connecting strip one and one end of connecting strip two, and the swinging blades are welded to the other end of connecting strip one and the other end of connecting strip two.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] An energy mixing structure is provided to isolate the heat of steam, carbon dioxide and nitrogen, reduce the heat of gas discharged from each gas injection well pipe, and reduce the heat loss of steam. The lifting plate can be raised along the triangular plate by the lifting assembly, so that the heat dissipation plate and the fixed groove can be raised and lowered, and the heat of steam is used to heat carbon dioxide and nitrogen. The heat transfer between high-temperature steam and carbon dioxide and nitrogen can compensate for the pressure loss of heat carbon dioxide and nitrogen, which can improve oil production or oil recovery efficiency.

[0018] The drive assembly and the connection assembly are matched, and the gas injection well pipe 2 and the lifting assembly can be added as needed, so that the gas injection well pipe 2 can be added according to the depth of the oil field. It is convenient to change the number of gas injection well pipe 2 and the lifting assembly. In addition, the drive assembly can stagger the driving triangle plate and the lifting plate, which helps to reduce the loss of steam, carbon dioxide and nitrogen.

[0019] A gas check structure is provided. By closing the two swing plates at the bottom end of the triangular plate, the gas flow injected into the oil field can be prevented from flowing back into the gas injection well pipe 2, and some oil can also be prevented from flowing back into the interior of the gas injection well pipe 2.

[0020] A gas dispersion structure is provided. When the two swing plates swing, the swing blades at the ends of the connecting strips can be swung, thereby stirring the injected steam, carbon dioxide and nitrogen, so that the airflow entering the oil field is fanned and dispersed. Especially when multiple airflows are injected, the various airflows can be mixed to make them uniform, so that the airflow can be fully integrated into the oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0022] Figure 1 It is the main structure diagram of the present invention;

[0023] Figure 2 Schematic diagrams of gas injection well pipe 1 and gas injection well pipe 2 of the present invention;

[0024] Figure 3 is a schematic diagram of a lifting assembly of the present invention;

[0025] Figure 4 Schematic diagram of the triangular plate and lifting plate of the present invention;

[0026] Figure 5 for Figure 2 A magnified view of point A;

[0027] Figure 6 is a schematic diagram of a connection assembly of the present invention;

[0028] Figure 7 Schematic diagram of the gas check structure of the present invention;

[0029] Figure 8 Schematic diagram of the gas dispersion structure of the present invention;

[0030] Figure 9 Schematic diagram of connecting bar 1 and connecting bar 2 of the present invention.

[0031] Figure: 1, combination valve body; 2, connecting pipe; 3, connector; 4, gas injection well pipe 1; 5, gas injection well pipe 2; 6, energy mixing structure; 610, lifting assembly; 611, triangular plate; 612, lifting plate; 613, guide bar; 614, fixing groove; 615, heat dissipation plate; 616, fixed top plate; 620, connecting assembly; 621, matching groove; 622, matching block; 623, connecting pin; 624, limit groove ; 625. Limit pin; 630. Drive assembly; 631. Motor; 632. Rotating shaft; 633. Rotating cam; 634. Lifting horizontal plate; 7. Gas check structure; 71. Connecting sleeve; 72. Connecting shaft; 73. Swinging plate one; 74. Swinging plate two; 75. Torsion spring; 8. Gas dispersion structure; 81. Connecting hinge; 82. Connecting strip one; 83. Connecting strip two; 84. Middle pin; 85. Swinging blade. DETAILED DESCRIPTION

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] Example 1:

[0034] See also Figure 1-Figure 3As shown, a steam, carbon dioxide, and nitrogen combined injection energy-saving and production-increasing oil production device includes a combination valve body 1, a connecting pipe 2, a connecting head 3, an injection well pipe 1 4, and an injection well pipe 2 5. The number of the connecting pipes 2 and the connecting heads 3 is three, and the combination valve body 1 is connected to the connecting heads 3 of the injection well pipe 1 4 through the connecting pipe 2. The injection well pipe 1 4 and the injection well pipe 2 5 are fixed to each other. The combination valve body 1 is connected to the three groups of connecting heads 3 of the injection well pipe 1 4 through the three groups of connecting pipes 2, so that steam, carbon dioxide, and nitrogen are respectively injected into the interior of the injection well pipe 1 4, thereby putting the steam, carbon dioxide, and nitrogen into the energy mixing structure 6. ; An energy mixing structure 6 is provided inside the gas injection well pipe 1 4 and the gas injection well pipe 2 5. The energy mixing structure 6 includes a lifting assembly 610. The lifting assembly 610 includes a triangular plate 611 for blocking steam, carbon dioxide and nitrogen. Steam, carbon dioxide and nitrogen are introduced into the three sides of the triangular plate 611. The triangular plate 611 is used to separate steam, carbon dioxide and nitrogen to prevent steam, carbon dioxide and nitrogen from mixing. The triangular plate 611 is welded to the inside of each section of the gas injection well pipe 1 4 and the gas injection well pipe 2 5 to ensure that the triangular plates 611 inside the gas injection well pipe 1 4 and each gas injection well pipe 2 5 are welded to ensure that the triangular plates 6 arranged up and down are welded. 11 is in the same position, so that steam, carbon dioxide and nitrogen flow along the vertical spaces of the triangular plate 611, and two vertically arranged reserved grooves are provided inside the triangular plate 611, and the interior of the two reserved grooves are slidably connected with a lifting plate 612, and the two edges of the lifting plate 612 are provided with guide strips 613, and the surface of the lifting plate 612 is provided with a row of heat dissipation plates 615, and the lifting plate 612 moves along the reserved grooves of the triangular plate 611 and is guided by the guide strips 613. The side wall of the triangular plate 611 is provided with two groups of fixed grooves 614, and the fixed grooves 614 and the heat dissipation plates 615 are adapted to each other. 1 and the lifting plate 612 are both made of metal materials that insulate heat energy, and the heat sink 615 is made of a heat-conducting material. When the lifting plate 612 moves up and down along the inside of the triangular plate 611, the fixing groove 614 and the heat sink 615 can be aligned or staggered. Since the triangular plate 611 and the lifting plate 612 are made of heat-insulating metal materials, tin foil or aluminum foil is provided on the surfaces of the triangular plate 611 and the lifting plate 612, so that the tin foil or aluminum foil can be used to reduce the heat transfer in the three spaces of the triangular plate 611, ensuring that steam, carbon dioxide and nitrogen are transferred to the oil field to drive the oil.

[0035] See also Figure 3 and Figure 4As shown, a row of fixing holes is provided inside the lifting plate 612, and the spacing between the fixing holes is equal to the spacing between the fixing slots 614. Two fixing rings are installed inside each fixing hole, and the heat sink 615 is located between the two fixing rings. The two fixing rings are fixed to the lifting plate 612 by bolts. The heat sink 615 is installed at the fixing hole of the lifting plate 612. When the lifting plate 612 is raised or lowered, the heat sink 615 can be raised or lowered, so that the fixing slots 614 and the fixing holes are aligned or staggered; the heat sink 615 is aligned with the fixing slots 614. When the heat dissipation plate 615 is staggered from the fixed groove 614, the energy of the steam, carbon dioxide and nitrogen is isolated from each other. The use of insulation material to isolate the heat of the steam, carbon dioxide and nitrogen will also reduce the loss of steam, carbon dioxide and nitrogen from the gas injection well pipe 25.

[0036] It should be noted that the steam, carbon dioxide and nitrogen generated by the boiler are introduced into the interior of the combination valve body 1, and the three groups of connecting pipes 2 of the combination valve body 1 are connected to the three groups of connectors 3 of the gas injection well pipe 1 4, so that the steam, carbon dioxide and nitrogen are introduced into the interior of the gas injection well pipe 1 4, and the steam, carbon dioxide and nitrogen are isolated by the three spaces of the triangular plate 611. The steam, carbon dioxide and nitrogen are introduced into the oil field along the triangular plate 611 of the gas injection well pipe 1 4 and the gas injection well pipe 2 5. By introducing steam, carbon dioxide and nitrogen into the oil field, the oil can be driven into the oil production pipeline, which is helpful for discharging the oil from the oil storage pipe during production. During this period, due to the steam, carbon dioxide and nitrogen Carbon dioxide and nitrogen are transferred along the inside of the gas injection well pipe 25, so that the energy loss of steam, carbon dioxide and nitrogen is relatively small, especially when the steam heat is released inside the oil field, or the pressure of carbon dioxide and nitrogen is released, which can drive the oil to the oil outlet, and when the pressure of carbon dioxide and nitrogen is lost, the heat dissipation plate 615 is aligned with the fixed groove 614, and the energy of steam, carbon dioxide and nitrogen is transferred from the fixed groove 614, which can transfer the high temperature of steam to carbon dioxide and nitrogen. Since carbon dioxide and nitrogen are processed under high pressure, the heat can also heat carbon dioxide and nitrogen to make up for the part of the heat loss of carbon dioxide and nitrogen.

[0037] See also Figure 2 and Figure 5As shown, the energy mixing structure 6 includes a driving component 630, and the driving component 630 includes a motor 631. The motor 631 is installed on the outer wall of the gas injection well pipe 4, and the motor 631 is welded to the side wall of the gas injection well pipe 4, so that the motor 631 is fixed to the gas injection well pipe 4. The output end of the motor 631 is connected to the rotating shaft 632 through a coupling, and a rotating cam 633 is installed on the end of the rotating shaft 632. The top of the lifting plate 612 of the gas injection well pipe 4 is welded with a lifting horizontal plate 634. The lifting horizontal plate 634 and the edge of the rotating cam 633 are in contact with the lifting horizontal plate 634 and the fixed top plate 616. The motor 631 is rotated to drive the rotating cam 633 to rotate. The rotating cam 633 rotates between -90° and 90°, so that the rotating cam 633 pushes the lifting horizontal plate 634 to make the lifting plate 612 rise and fall, and the triangular plate 611 and the lifting plate 612 slide relative to each other.

[0038] See also Figure 5 As shown, the lifting distance of the lifting horizontal plate 634 and the fixed top plate 616 is twice the diameter of the fixed groove 614, and the rotating cam 633 rotates in the angle range of -90° to 90°. The swinging rotating cam 633 lifts and lowers the heat dissipation plate 615 of the lifting plate 612, thereby transferring heat to steam, carbon dioxide and nitrogen. The lifting plates 612 in the upper and lower positions can drive the lifting assembly 610 to move up and down through the driving assembly 630.

[0039] It should be noted that the motor 631 can be used to drive the rotating shaft 632 to rotate, and the rotating shaft 632 can drive the rotating cam 633 to rotate, so that the rotating cam 633 pushes the lifting horizontal plate 634 to move up and down, and the lifting horizontal plate 634 drives the lifting plate 612 to move up and down, so that each lifting plate 612 can be lifted and lowered along the inside of the triangular plate 611, and the heat dissipation plate 615 can be raised or lowered, so as to control the on and off of the energy transfer between steam, carbon dioxide and nitrogen.

[0040] See also Figure 2 and Figure 6 As shown, the energy mixing structure 6 also includes a connecting component 620, which includes a matching groove 621. The matching groove 621 is arranged at the bottom end of the lifting plate 612, and the matching block 622 is arranged at the top of the lifting plate 612. The shapes of the matching groove 621 and the matching block 622 match each other, and the matching block 622 is placed inside the matching groove 621, so that the matching block 622 and the matching groove 621 are engaged with each other. A connecting pin 623 is provided at the intersection of the matching groove 621 and the matching block 622. The upper and lower lifting plates 612 are connected by the connecting pin 623, and the heat dissipation plates 615 of the upper and lower lifting plates 612 are synchronously overlapped or synchronously staggered with the heat dissipation plates 615. The upper and lower lifting plates 612 can be connected, and all lifting plates 612 can be lifted and lowered synchronously.

[0041] See also Figure 6 As shown, limit slots 624 are provided at the ends of the triangular plate 611 and at the positions of the two lifting plates 612. A limit pin 625 is rotated inside the limit slot 624, and the limit pin 625 moves synchronously with the lifting plate 612. When the lifting plate 612 is lifted or lowered, the limit pin 625 can be lifted or lowered with it. The limit pin 625 is slidably connected to the inside of the limit slot 624, so that the limit pin 625 moves along the inside of the limit slot 624. The length of the limit slot 624 is twice the diameter of the fixed slot 614. Therefore, when the lifting plate 612 is lifted or lowered, the limit pin 625 is located inside the limit slot 624 and is lifted or lowered, and will not be affected by the limit pin 625.

[0042] It should be noted that, according to the needs of oil, a gas injection well pipe 25 can be installed on the top of the top gas injection well pipe 25. At this time, the lifting plate 612 inside the gas injection well pipe 25 moves along the inside of the triangular plate 611, so that the extended matching block 622 and the matching groove 621 are connected, so that the upper and lower triangular plates 611 can be connected together, and the limiting pin 625 is lifted and lowered along the inside of the limiting groove 624, so that the later installed gas injection well pipe 25 can be installed on the top of the previous gas injection well pipe 25, and the number of gas injection well pipes 25 can be increased as needed.

[0043] See also Figure 2 and Figure 7 As shown, three groups of gas check structures 7 are provided at the bottom end of the side wall of the lowest end triangular plate 611. The gas check structure 7 includes a connecting sleeve 71, which is welded to the inner wall of the gas injection well pipe 2 5 and the side wall of the triangular plate 611. The internal rotation of the connecting sleeve 71 is connected to a connecting shaft 72. The middle of the connecting shaft 72 is connected to a swing plate 1 73 and a swing plate 2 74. The swing plate 1 73 and the swing plate 2 74 are symmetrically arranged on both sides of the connecting shaft 72. When steam, carbon dioxide and nitrogen are introduced downward, the thrust of the airflow can be used to swing the swing plate 1 73 and the swing plate 2 74, thereby rotating the swing plate 1 73 and the swing plate 2 74 around the connecting shaft 72. , so that the swing plate 1 73 and the swing plate 2 74 can be opened and closed, and the cylindrical surface of the connecting shaft 72 is sleeved with a torsion spring 75, and the two ends of the torsion spring 75 are in contact with the lower surfaces of the swing plate 1 73 and the swing plate 2 74. Each side wall of the triangular plate 611 is provided with two limit columns, and the swing plate 1 73 and the swing plate 2 74 are in contact with the limit columns. The airflow thrust can overcome the resistance of the torsion spring 75, the swing plate 1 73 and the swing plate 2 74 and then push them, and when the injection of steam, carbon dioxide and nitrogen into the triangular plate 611 stops, the swing plate 1 73 and the swing plate 2 74 can be reset under the action of the torsion spring 75.

[0044] It should be noted that the injected steam, carbon dioxide and nitrogen can push the swing plate 1 73 and the swing plate 2 74 to rotate around the connecting shaft 72 and overcome the elastic force of the torsion spring 75, so that the steam, carbon dioxide and nitrogen can be normally introduced. When the injection of steam, carbon dioxide and nitrogen is stopped, the swing plate 1 73 and the swing plate 2 74 can be reset under the action of the torsion spring 75, which can avoid the backflow of air flow or oil.

[0045] See also Figure 2 、 Figure 8 and Figure 9 As shown, a gas dispersion structure 8 is provided between the lower surface of each swing plate 1 73 and the lower surface of the swing plate 2 74. The gas dispersion structure 8 includes two connecting hinges 81. The two connecting hinges 81 are respectively provided on the lower surfaces of the swing plate 1 73 and the swing plate 2 74. The connecting hinges 81 can be welded to the lower surfaces of the swing plate 1 73 and the swing plate 2 74, and the two connecting hinges 81 are both provided with a connecting strip 1 82 and a connecting strip 2 83. The middle of the connecting strip 1 82 and the connecting strip 2 83 is connected with an intermediate pin 84. One end of the connecting strip 1 82 and one end of the connecting strip 2 83 are both welded with a swinging fan blade 85. When the swing plate 1 73 and the swing plate 2 74 swing, the connecting strip 1 82 and the connecting strip 2 83 can be swung, so that the connecting strip 1 82 and the connecting strip 2 83 can be expanded and closed similar to a scissors structure, thereby dispersing the overflowed steam, carbon dioxide and nitrogen.

[0046] See also Figure 8 and Figure 9 As shown, the two connecting hinges 81 are rotatably connected to one end of the connecting bar 1 82 and one end of the connecting bar 2 83, and the swinging blades 85 are welded to the other end of the connecting bar 1 82 and the other end of the connecting bar 2 83. When one end of the connecting bar 1 82 and one end of the connecting bar 2 83 swing, the other end of the connecting bar 1 82 and the other end of the connecting bar 2 83 swing, thereby the swinging blades 85 disperse the gas.

[0047] It should be noted that when the steam, carbon dioxide and nitrogen are blown, the swing plate 1 73 and the swing plate 2 74 can be swung, and the connecting bar 1 82 and the connecting bar 2 83 can be swung, so that one end of the connecting bar 1 82 and one end of the connecting bar 2 83 are connected to the connecting hinge 81, and the swing blades 85 at the other end of the connecting bar 1 82 and the other end of the connecting bar 2 83 can disperse the airflow, so that the steam, carbon dioxide and nitrogen injected into the oil field push the oil to move, so that the oil can be more easily discharged from the oil production port.

[0048] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A steam, carbon dioxide, and nitrogen combined injection energy-saving and production-increasing oil production device, comprising a combination valve body (1), a connecting pipe (2), a connecting head (3), a gas injection well pipe (4), and a gas injection well pipe (5), wherein the connecting pipe (2) and the connecting head (3) are in three groups, and the combination valve body (1) is connected to the connecting head (3) of the gas injection well pipe (4) through the connecting pipe (2), and the gas injection well pipe (4) and the gas injection well pipe (5) are fixed to each other; characterized in that: An energy mixing structure (6) is provided inside the gas injection well pipe 1 (4) and the gas injection well pipe 2 (5). The energy mixing structure (6) includes a lifting assembly (610). The lifting assembly (610) includes a triangular plate (611) for blocking steam, carbon dioxide and nitrogen. The triangular plate (611) is welded inside each section of the gas injection well pipe 1 (4) and the gas injection well pipe 2 (5). Two vertically arranged reserved grooves are provided inside the triangular plate (611). The insides of the two reserved grooves are Both are slidably connected with a lifting plate (612), and the two edges of the lifting plate (612) are provided with guide strips (613). The surface of the lifting plate (612) is provided with a row of heat dissipation plates (615). The side wall of the triangular plate (611) is provided with two groups of fixing grooves (614). The positions of the fixing grooves (614) and the heat dissipation plates (615) are adapted. The material of the triangular plate (611) and the lifting plate (612) are both metal materials that can insulate heat energy, and the material of the heat dissipation plates (615) is a heat-conducting material.

2. The steam, carbon dioxide, and nitrogen combined injection energy-saving and production-increasing oil production device according to claim 1, characterized in that: A row of fixing holes is provided inside the lifting plate (612), two fixing rings are installed inside each fixing hole, the heat dissipation plate (615) is located between the two fixing rings, and the two fixing rings are fixed to the lifting plate (612) by bolts.

3. The steam, carbon dioxide, and nitrogen combined injection energy-saving and production-increasing oil production device according to claim 2, characterized in that: When the heat dissipation plate (615) is aligned with the fixed groove (614), the energy of steam, carbon dioxide and nitrogen is transferred from the fixed groove (614); when the heat dissipation plate (615) is staggered with the fixed groove (614), the energy of steam, carbon dioxide and nitrogen is isolated from each other.

4. The steam, carbon dioxide, and nitrogen combined injection energy-saving and production-increasing oil production device according to claim 3, characterized in that: The energy mixing structure (6) includes a driving assembly (630), and the driving assembly (630) includes a motor (631). The motor (631) is installed on the outer wall of the gas injection well pipe (4). The output end of the motor (631) is connected to the rotating shaft (632) through a coupling. The end of the rotating shaft (632) is installed with a rotating cam (633). The top of the lifting plate (612) of the gas injection well pipe (4) is welded with a lifting horizontal plate (634). The edge of the rotating cam (633) is in contact with the lifting horizontal plate (634) and the fixed top plate (616).

5. The steam, carbon dioxide, and nitrogen combined injection energy-saving and production-increasing oil production device according to claim 4, characterized in that: The lifting distance of the lifting horizontal plate (634) and the fixed top plate (616) is twice the diameter of the fixed groove (614), and the rotating angle range of the rotating cam (633) is -90° to 90°.

6. The steam, carbon dioxide, and nitrogen combined injection energy-saving and production-increasing oil production device according to claim 5, characterized in that: The energy mixing structure (6) further includes a connecting assembly (620), wherein the connecting assembly (620) includes a matching groove (621), the matching groove (621) is arranged at the bottom end of the lifting plate (612), and the matching block (622) is arranged at the top end of the lifting plate (612). The shapes of the matching groove (621) and the matching block (622) match each other. A connecting pin (623) is provided at the intersection of the matching groove (621) and the matching block (622). The lifting plates (612) arranged up and down are connected by the connecting pin (623), and the heat dissipation plates (615) of the lifting plates (612) arranged up and down are synchronously overlapped or synchronously staggered.

7. The steam, carbon dioxide, and nitrogen combined injection energy-saving and production-increasing oil production device according to claim 6, characterized in that: A limiting groove (624) is provided at the ends of the triangular plate (611) and at the positions of the two lifting plates (612). A limiting pin (625) is rotated inside the limiting groove (624). The limiting pin (625) moves synchronously with the lifting plate (612). The limiting pin (625) is slidably connected to the inside of the limiting groove (624). The length of the limiting groove (624) is twice the diameter of the fixing groove (614).

8. A steam, carbon dioxide, and nitrogen combined injection energy-saving and production-increasing oil production device according to claim 4 or 6, characterized in that: The bottom end of the side wall of the triangle plate (611) at the lowest end is provided with three groups of gas check structures (7), and the gas check structure (7) includes a connecting sleeve (71), which is welded to the inner wall of the gas injection well pipe (5) and the side wall of the triangle plate (611). The interior of the connecting sleeve (71) is rotatably connected to a connecting shaft (72), and the middle of the connecting shaft (72) is connected to a swing plate 1 (73) and a swing plate 2 (74). The swing plate 1 (73) and the swing plate 2 (74) are symmetrically arranged on both sides of the connecting shaft (72). The cylindrical surface of the connecting shaft (72) is provided with a torsion spring (75), and the two ends of the torsion spring (75) are in contact with the lower surface of the swing plate 1 (73) and the swing plate 2 (74). Each side wall of the triangle plate (611) is provided with two limit columns, and the swing plate 1 (73) and the swing plate 2 (74) are in contact with the limit columns.

9. The steam, carbon dioxide, and nitrogen combined injection energy-saving and production-increasing oil production device according to claim 8, characterized in that: A gas dispersion structure (8) is provided between the lower surface of each swing plate (73) and the lower surface of each swing plate (74), and the gas dispersion structure (8) includes two connecting hinges (81). The two connecting hinges (81) are respectively provided on the lower surfaces of the swing plate (73) and the swing plate (74), and the two connecting hinges (81) are both provided with a connecting strip (82) and a connecting strip (83). The middle of the connecting strip (82) and the connecting strip (83) is connected with an intermediate pin (84), and one end of the connecting strip (82) and one end of the connecting strip (83) are both welded with a swing blade (85).

10. The steam, carbon dioxide, and nitrogen combined injection energy-saving and production-increasing oil production device according to claim 9, characterized in that: The two connecting hinges (81) are rotatably connected to one end of the first connecting strip (82) and one end of the second connecting strip (83), and the swinging blade (85) is welded to the other end of the first connecting strip (82) and the other end of the second connecting strip (83).

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