A deep oil exploitation device and method

Abstract

The present application belongs to the technical field of oil exploitation, and particularly relates to a deep layer oil exploitation device, which comprises an oil production casing and a gravel groove opened with the oil production casing as a center, characterized in that a ring-shaped base is arranged at the groove edge of the gravel groove, the upper end surface of the ring-shaped base is fixedly supported by four support columns with a ring-shaped table, and a rotating groove is opened on the inner circumferential wall of the ring-shaped table; and a use method of the deep layer oil exploitation device, steps of which are as follows: S1, after the installation of the downhole oil production casing is completed, a circular gravel groove is opened with the oil production casing as a center, the ring-shaped base is fixed along the edge of the gravel groove to avoid the collapse of the soil around the gravel groove, and a supporting and protecting effect is achieved, and then the ring-shaped table is erected through the support columns. The present application effectively improves the gravel laying speed of the wellhead part of the oil exploitation device, speeds up the installation efficiency of the device, and ensures the stability of the wellhead device.

Description

Technical Field

[0001] This invention relates to the field of oil extraction technology, and in particular to a deep oil extraction apparatus and method. Background Technology

[0002] In deep oil extraction operations, the wellhead equipment, as the core equipment installed at the wellhead during the extraction process, is mainly used to control and regulate the flow of fluids such as oil, gas, and water, ensuring the safety and efficiency of drilling, completion, and production operations. The wellhead equipment generally consists of a casing head, a tubing head, and a production tree. The casing head is a crucial connecting component between the underground oil production pipeline and the wellhead equipment. The lower end of the casing head is connected to the production casing via threads, and the upper end is connected to the tubing head, thus connecting to the production tree.

[0003] After the production casing is installed, existing oil extraction equipment requires the laying of gravel at the wellhead to solidify the loose soil and reinforce the wellhead, thus enabling the stable installation of the wellhead equipment and improving its support performance. However, the gravel laying needs to be uniform. Manual laying is inefficient and can easily cause the surrounding soil structure to collapse, thus affecting the gravel layer laying work.

[0004] To address the aforementioned problems, we propose a deep oil extraction apparatus and method. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the background art by proposing a deep oil extraction device and method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a deep oil extraction device, comprising an oil production casing and a gravel trough centered on the oil production casing, characterized in that an annular base is provided at the edge of the gravel trough, an annular platform is fixedly supported on the upper surface of the annular base by four support columns, a rotating groove is provided on the inner peripheral wall of the annular platform, a rotating assembly is provided on the inner side of the annular platform, the rotating assembly includes four rectangularly distributed rotating blocks rotatably connected in the rotating groove, a rectangular limiting frame is provided at the center of the rotating groove, a connecting frame is fixedly connected to the limiting frame and the four rotating blocks, a moving part is provided on each connecting frame, and a driving assembly is provided below the annular platform;

[0007] The two movable parts distributed on the left and right are respectively equipped with a gravel-laying mechanism and a spreading mechanism. The two connecting frames distributed on the left and right are each provided with multiple positioning screw holes. The ring-shaped platform is provided with a transmission mechanism, which ensures the effective operation of the gravel-laying mechanism and the spreading mechanism.

[0008] In the aforementioned deep oil extraction device, the upper end of the oil production casing is threadedly connected to a casing head, the casing head is connected to an oil pipe head, the casing head is connected to a connecting pipe through the oil pipe head, and the end of the connecting pipe away from the casing head is connected to a tree.

[0009] In the aforementioned deep oil extraction device, the moving component includes an I-shaped block, which vertically penetrates the corresponding connecting frame. The I-shaped block and the upper and lower end faces of the connecting frame are in rolling contact via rollers.

[0010] In the aforementioned deep oil extraction device, the drive assembly includes a bevel gear ring fixedly connected to the lower ends of four rotating blocks. The lower end of the bevel gear ring extends to below the ring platform. A drive motor is fixedly installed at the lower end of the ring platform. A first bevel gear is coaxially fixedly connected to the drive end of the drive motor. The first bevel gear meshes perpendicularly with the bevel gear ring.

[0011] In the aforementioned deep oil extraction device, the gravel laying mechanism includes a gravel box fixedly connected to a moving part, a gravel discharge pipe connected to the gravel box, and the lower end of the gravel discharge pipe extending to the gravel trough opening.

[0012] The spreading mechanism includes a transmission box fixedly connected to the moving part. The transmission box is provided with a third bevel gear. The lower end of the third bevel gear is coaxially fixedly connected to a shaft. The shaft passes through the bottom wall of the transmission box and is rotatably connected to it. The lower end of the shaft extends to the bottom of the moving part and is fixedly connected to an adjustable telescopic rod. The telescopic end of the adjustable telescopic rod is fixedly connected to a stirring block.

[0013] A rotating sleeve is rotatably connected between the two side walls of the gravel box and the transmission box. The inner cross-section of the rotating sleeve is regular hexagonal. Multiple agitators are fixedly connected to the rotating sleeve inside the gravel box. A second bevel gear is fixedly sleeved on the rotating sleeve inside the transmission box. The second bevel gear meshes perpendicularly with the third bevel gear.

[0014] In the aforementioned deep oil extraction device, the transmission mechanism includes an annular toothed plate fixedly connected to an annular platform. Two transmission gears arranged opposite each other are meshed on the annular toothed plate. Rotating rods with a regular hexagonal cross-section are coaxially fixedly connected to the transmission gears. The ends of the two rotating rods away from the transmission gears respectively pass through corresponding rotating sleeves and are slidably connected to them. The ends of the two rotating rods close to each other are rotatably connected to vertical plates. Both vertical plates are fixedly connected to a limiting frame.

[0015] In the aforementioned deep oil extraction device, two connecting sleeves are fixedly connected to the outer wall of the casing head, and the lower ends of the two moving parts located at the front and rear positions are rotatably connected to connecting parts.

[0016] The connector consists of two spaced-apart rods, the distance between the two rods being the same as the width of the connecting sleeve. The end of each rod away from the moving part has a socket that matches the connecting sleeve. The rod is rotatably connected to the corresponding connecting sleeve via a pin.

[0017] A method for using a deep oil extraction device, comprising the following steps:

[0018] S1. After the installation of the downhole oil production casing is completed, a circular gravel trough is opened with the oil production casing as the center. The ring base is fixed along the edge of the gravel trough to prevent the soil around the gravel trough from collapsing and to play a supporting and protective role. Then, the ring platform is erected through the support column, and the gravel spreading mechanism, spreading mechanism, drive component and transmission mechanism on the ring platform are installed.

[0019] S2. Load the gravel to be laid into the gravel box, and use the adjustable telescopic rod to adjust the stirring block to a position close to the bottom of the gravel trough. Then start the drive motor. The drive motor drives the four rotating blocks to rotate along the rotating trough through the transmission of the first bevel gear and the bevel gear ring, while making the four moving parts move in a circle, thereby driving the gravel laying mechanism and the spreading mechanism above to move in a circle.

[0020] During the circular motion of the S3 gravel spreading mechanism and the spreading mechanism, under the action of the corresponding transmission gears and rotating rods, both the gravel box and the rotating sleeve in the transmission box rotate, so that the gravel in the gravel box can be agitated by the stirring rod. Under the action of the stirring rod, the gravel in the gravel box can be effectively discharged through the gravel discharge pipe, and then discharged into the gravel trough, and the gravel is spread in a circular motion along the edge of the gravel trough. At the same time, the rotating sleeve in the transmission box rotates synchronously, and under the transmission action of the second bevel gear and the third bevel gear, it drives the lower shaft and the adjustable telescopic rod to rotate, so that the lower stirring block rotates. The stirring block rotates on its own axis and revolves around the gravel trough, thereby breaking up and spreading the gravel that falls in front, so that the gravel is evenly spread on the bottom of the gravel trough.

[0021] S4. Based on the actual diameter of the gravel trough, the positions of the gravel-laying mechanism and the sizing mechanism are moved. Bolts are screwed into the positioning screw holes at the designated positions to contact and abut against the moving parts below the gravel-laying mechanism and the sizing mechanism, thereby fixing the position of the moving parts. The working positions of the gravel-laying mechanism and the sizing mechanism are changed multiple times to effectively carry out the complete gravel-laying work in the gravel trough. The gradual increase in the amount of gravel in the gravel trough also improves the stability of the ring base.

[0022] S5. When the gravel is laid to the end of the oil production casing, the gravel in the gravel trench effectively protects the oil production casing, keeping it stable. Then, the workers can lift the casing head into the limiting frame, aligning its threaded end with the threaded groove of the oil production casing. Then, two pins are used to connect the two connectors to the two connecting casings. Under the connection of the connectors, when the moving part rotates, it can drive the casing head to rotate, thereby automatically screwing the threaded end of the casing head into the threaded groove of the oil production casing, completing the installation of the casing head. Then, the connectors are disconnected, and the gravel laying work continues until the gravel trench is filled. In this state, the bottom of the casing head is also located in the gravel trench and is wrapped by gravel to improve the support stability of the casing head.

[0023] S6. After the tubing head and the wellhead are installed at the end of the casing head, the oil pump can be connected to start oil production.

[0024] Compared with existing technologies, the advantages of this invention are:

[0025] By setting up a gravel trough and an annular base, the annular base wraps around the edge of the gravel trough, which protects the gravel trough and prevents its inner wall from collapsing, thus ensuring the integrity of the gravel trough's shape. As the gravel in the gravel trough is filled, the supporting stability of the annular base also increases, further ensuring the stable installation of the imported device.

[0026] By setting up an annular platform, rotating components, transmission mechanism, gravel spreading mechanism, and even spreading mechanism, the gravel can be automatically and evenly spread during the installation process, ensuring uniform distribution of the gravel layer. This eliminates the need for manual spreading and greatly improves the installation efficiency of oil extraction equipment.

[0027] During the gravel laying process, the connection between the casing head and the oil production casing can be automatically completed by simply connecting the moving part in the rotating assembly to the casing head, thereby further reducing the installation work of the workers.

[0028] In summary, this invention effectively improves the gravel laying speed at the wellhead of oil extraction equipment, accelerates the installation efficiency of the equipment, and ensures the stability of the wellhead equipment. Attached Figure Description

[0029] Figure 1 This is a perspective view of a deep oil extraction device proposed in this invention;

[0030] Figure 2 This is a perspective view of a deep oil extraction device proposed in this invention.

[0031] Figure 3 This is a schematic diagram of a gravel trough in a deep oil extraction device proposed in this invention.

[0032] Figure 4 This is a partial structural schematic diagram of a deep oil extraction device proposed in this invention;

[0033] Figure 5 This is a partial top view of a deep oil extraction device proposed in this invention;

[0034] Figure 6 This is a schematic diagram of the annular platform in a deep oil extraction device proposed in this invention;

[0035] Figure 7 This is a schematic diagram of the annular platform in a deep oil extraction device proposed in this invention from another perspective.

[0036] Figure 8 This is a schematic diagram of the rotating component in a deep oil extraction device proposed in this invention;

[0037] Figure 9 This is a schematic diagram of the rotating component in a deep oil extraction device proposed in this invention from another perspective.

[0038] Figure 10 This is a schematic diagram of the casing head in a deep oil extraction device proposed in this invention.

[0039] In the diagram: 1. Oil production casing; 2. Gravel trough; 3. Ring base; 4. Casing head; 5. Connecting pipe; 6. Support column; 7. Ring platform; 8. Rotating groove; 9. Rotating block; 10. Limiting frame; 11. Connecting frame; 12. Moving part; 13. Bevel gear ring; 14. Drive motor; 15. First bevel gear; 16. Gravel box; 17. Gravel discharge pipe; 18. Transmission box; 19. Rotating casing; 20. Stirring rod; 21. Second bevel gear; 22. Third bevel gear; 23. Ring toothed plate; 24. Rotating rod; 25. Transmission gear; 26. Positioning screw hole; 27. Connecting rod; 28. Connecting casing; 29. ​​Adjustable telescopic rod; 30. Stirring block. Detailed Implementation

[0040] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0041] Reference Figures 1-10 A deep oil extraction device includes a production casing 1 and a gravel trough 2 with the production casing 1 as the center. Gravel is laid to form a gravel layer, thereby improving the support stability of the wellhead and preventing wellhead collapse caused by loose soil. At the same time, it can be used in conjunction with wellbore venting to effectively remove downhole gas and prevent excessive downhole gas pressure.

[0042] The upper end of the oil production casing 1 is threaded with a casing head 4, and an oil pipe head is connected to the casing head 4. The casing head 4 is connected to a connecting pipe 5 through the oil pipe head. The end of the connecting pipe 5 away from the casing head 4 is connected to the Christmas tree. The oil pipe head and the Christmas tree are both existing technologies in oil production equipment and will not be described here.

[0043] A ring-shaped base 3 is provided at the edge of the gravel trough 2. The ring-shaped base 3 surrounds the edge of the gravel trough 2, which protects the gravel trough 2, prevents its inner wall from collapsing, and ensures the integrity of the shape of the gravel trough 2. The upper end of the ring-shaped base 3 is fixedly supported by a ring-shaped platform 7 by four support columns 6. A rotating groove 8 is opened on the inner peripheral wall of the ring-shaped platform 7. A rotating assembly is provided inside the ring-shaped platform 7. The rotating assembly includes four rectangular rotating blocks 9 rotatably connected in the rotating groove 8. A rectangular limiting frame 10 is provided at the center of the rotating groove 8. The limiting frame 10 and the four rotating blocks 9 are all fixedly connected by a connecting frame 11. The rotating assembly can rotate along the rotating groove 8 under the action of the rotating groove 8.

[0044] Each connecting frame 11 is provided with a movable component 12, which includes an I-shaped block. The I-shaped block is vertically inserted through the corresponding connecting frame 11. The I-shaped block and the upper and lower end faces of the connecting frame 11 are in rolling contact through rollers. The movable component 12 can move stably along the corresponding connecting frame 11 under the action of the rollers.

[0045] A drive assembly is provided below the annular platform 7. The drive assembly includes a bevel ring 13 fixedly connected to the lower end of the four rotating blocks 9. The lower end of the bevel ring 13 extends to the lower end of the annular platform 7. A drive motor 14 is fixedly installed at the lower end of the annular platform 7. A first bevel gear 15 is coaxially fixedly connected to the drive end of the drive motor 14. The first bevel gear 15 meshes perpendicularly with the bevel ring 13. The drive motor 14 can drive the bevel ring 13 to rotate through the first bevel gear 15. The bevel ring 13 then drives the rotating assembly above to rotate.

[0046] The two movable parts 12 distributed on the left and right are respectively equipped with a gravel spreading mechanism and a scattering mechanism. The two connecting frames 11 distributed on the left and right are each provided with multiple positioning screw holes 26. The positioning screw holes 26 are used to fix the position of the movable parts 12. It is only necessary to screw a bolt into the positioning screw hole 26 so that the end of the bolt abuts against the inner side of the movable part 12, and the purpose of fixing the movable part 12 is achieved by using the metal friction force.

[0047] The gravel-laying mechanism includes a gravel box 16 fixedly connected to the movable part 12 for holding gravel to be laid. A gravel discharge pipe 17 is connected to the gravel box 16 for discharging gravel from the gravel box 16. The lower end of the gravel discharge pipe 17 extends to the opening of the gravel trough 2, so that the gravel falls into the gravel trough 2.

[0048] The spreading mechanism includes a transmission box 18 fixedly connected to the moving part 12. A third bevel gear 22 is provided inside the transmission box 18. A shaft is fixedly connected to the lower end of the third bevel gear 22 on the same axis. The shaft passes through the bottom wall of the transmission box 18 and is rotatably connected to it. The lower end of the shaft extends to the bottom of the moving part 12 and is fixedly connected to an adjustable telescopic rod 29. An agitator 30 is fixedly connected to the telescopic end of the adjustable telescopic rod 29. The adjustable telescopic rod 29 is existing technology and can be adjusted to make the agitator 30 perform agitation work at a specified position according to the position and height of the agitator 30.

[0049] A rotating sleeve 19 is rotatably connected through both sides of the gravel box 16 and the transmission box 18. The inner cross-section of the rotating sleeve 19 is regular hexagonal. Multiple agitator rods 20 are fixedly connected to the rotating sleeve 19 inside the gravel box 16. When the rotating sleeve 19 drives the agitator rods 20 to rotate, it can agitate the gravel in the gravel box 16, making it more effectively discharged through the gravel discharge pipe 17. A second bevel gear 21 is fixedly sleeved on the rotating sleeve 19 inside the transmission box 18. The second bevel gear 21 meshes perpendicularly with the third bevel gear 22. When the rotating sleeve 19 drives the second bevel gear 21 to rotate, it can drive the agitator block 30 below to rotate.

[0050] A transmission mechanism is provided on the annular platform 7 to ensure the effective operation of the gravel-laying mechanism and the sizing mechanism. The transmission mechanism includes an annular toothed plate 23 fixedly connected to the annular platform 7. Two transmission gears 25 arranged opposite each other are meshed on the annular toothed plate 23. Rotating rods 24 with a regular hexagonal cross-section are coaxially fixedly connected to the transmission gears 25. The ends of the two rotating rods 24 away from the transmission gears 25 respectively pass through the corresponding rotating sleeves 19 and are slidably connected to them. The ends of the two rotating rods 24 close to each other are rotatably connected to vertical plates. Both vertical plates are fixedly connected to the limiting frame 10. When the drive assembly drives the rotating assembly to rotate, the two transmission gears 25 rotate with the rotating assembly, thereby rolling and meshing on the annular toothed plate 23, thereby driving the corresponding rotating rods 24 to rotate. The rotating rods 24 in the rotating state can drive the corresponding rotating sleeves 19 to rotate, thereby controlling the gravel-laying mechanism and the sizing mechanism to perform gravel-laying and sizing operations.

[0051] Two connecting sleeves 28 are fixedly connected to the outer wall of the casing head 4. The lower ends of the two moving parts 12 located at the front and rear positions are rotatably connected to the connecting parts. The connecting parts are composed of two spaced connecting rods 27. The spacing between the two connecting rods 27 is the same as the width of the connecting sleeves 28. The end of the connecting rod 27 away from the moving part 12 has a socket that matches the connecting sleeve 28. The connecting rod 27 is rotatably connected to the corresponding connecting sleeve 28 through a pin. The moving parts 12 at the front and rear positions can be connected to the casing head 4 through the connecting rods 27, the connecting sleeves 28 and the pin. Thus, the connection between the casing head 4 and the oil production casing 1 can be automatically completed by rotating the rotating assembly.

[0052] A method for using a deep oil extraction device, comprising the following steps:

[0053] S1. After the installation of the downhole oil production casing is completed, a circular gravel trough 2 is opened with the oil production casing 1 as the center. The ring base 3 is fixed along the edge of the gravel trough 2 to prevent the soil around the gravel trough 2 from collapsing and to play a supporting and protective role. Then, the ring platform 7 is erected through the support column 6, and the gravel spreading mechanism, spreading mechanism, drive component and transmission mechanism on the ring platform 7 are installed.

[0054] S2. Load the gravel to be laid into the gravel box 16, and use the adjustable telescopic rod 29 to adjust the stirring block 30 to a position close to the bottom of the gravel trough 2. Then start the drive motor 14. The drive motor 14 drives the four rotating blocks 9 to rotate along the rotating groove 8 through the transmission of the first bevel gear 15 and the bevel gear ring 13, while making the four moving parts 12 perform circular motion, thereby driving the gravel laying mechanism and the spreading mechanism above to perform circular motion.

[0055] During the circular motion of the S3 gravel spreading mechanism and the spreading mechanism, under the action of the corresponding transmission gear 25 and the rotating rod 24, the rotating sleeve in the gravel box 16 and the transmission box 18 rotates, so that the gravel in the gravel box 16 can be stirred by the stirring rod 20. Under the action of the stirring rod 20, the gravel in the gravel box 16 can be effectively discharged through the gravel discharge pipe 17 and discharged into the gravel trough 2, and the gravel is spread in a circular motion along the edge of the gravel trough 2. At the same time, the rotating sleeve 19 in the transmission box 18 rotates synchronously. Under the transmission action of the second bevel gear 21 and the third bevel gear 22, the shaft and the adjustable telescopic rod 29 below rotate, so that the stirring block 30 below rotates. While the stirring block 30 rotates on its own axis, it revolves around the gravel trough 2, thereby breaking up and spreading the gravel falling in front, so that the gravel is evenly spread at the bottom of the gravel trough 2.

[0056] S4. Based on the actual diameter of the gravel trough 2, the positions of the gravel spreading mechanism and the spreading mechanism are moved. The bolts are screwed into the positioning screw holes 26 at the designated positions, so as to contact and abut against the moving parts 12 below the gravel spreading mechanism and the spreading mechanism, thereby fixing the position of the moving parts 12. The working positions of the gravel spreading mechanism and the spreading mechanism are changed multiple times, thereby effectively carrying out the complete gravel filling work of the gravel trough 2. The gradual increase in the amount of gravel in the gravel trough 2 also improves the stability of the ring base 3.

[0057] S5. When the gravel is laid to the end of the oil production casing 1, the gravel in the gravel trough 2 effectively protects the oil production casing 1, keeping the oil production casing 1 stable. Then, the workers can lift the casing head 4 into the limiting frame 10, aligning its threaded end with the threaded groove of the oil production casing 1. Then, two pins are used to connect the two connectors to the two connecting sleeves 28. Then, under the connection of the connectors, when the moving part 12 rotates, it can drive the casing head 4 to rotate, thereby automatically screwing the threaded end of the casing head 4 into the threaded groove of the oil production casing 1, completing the installation of the casing head 4. Then, the connection of the connectors is released, and the gravel laying work continues until the gravel trough 2 is filled. In this state, the bottom of the casing head 4 is also located in the gravel trough 2 and is wrapped by gravel to improve the support stability of the casing head 4.

[0058] S6. After the tubing head and the wellhead are installed at the end of the casing head 4, the oil pump can be connected to start oil production.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A deep oil extraction apparatus, comprising a production casing (1) and a gravel trough (2) centered on the production casing (1), characterized in that, The gravel trough (2) is provided with an annular base (3) at the edge of the trough. The upper end of the annular base (3) is fixedly supported by four support columns (6) on an annular platform (7). A rotating groove (8) is provided on the inner peripheral wall of the annular platform (7). A rotating assembly is provided on the inner side of the annular platform (7). The rotating assembly includes four rectangular rotating blocks (9) rotatably connected in the rotating groove (8). A rectangular limiting frame (10) is provided at the center of the rotating groove (8). A connecting frame (11) is fixedly connected to the limiting frame (10) and the four rotating blocks (9). A moving part (12) is provided on each of the connecting frames (11). A driving assembly is provided below the annular platform (7). The two movable parts (12) distributed on the left and right are respectively equipped with a gravel spreading mechanism and a spreading mechanism. The two connecting frames (11) distributed on the left and right are provided with multiple positioning screw holes (26). The ring-shaped platform (7) is provided with a transmission mechanism, which ensures the effective operation of the gravel spreading mechanism and the spreading mechanism. The upper end of the oil production casing (1) is threaded with a casing head (4), and an oil pipe head is connected to the casing head (4). The casing head (4) is connected to a connecting pipe (5) through the oil pipe head. The end of the connecting pipe (5) away from the casing head (4) is connected to an oil production tree. The gravel-laying mechanism includes a gravel box (16) fixedly connected to a movable part (12), and a gravel discharge pipe (17) connected to the gravel box (16), the lower end of which extends to the opening of the gravel trough (2). The spreading mechanism includes a transmission box (18) fixedly connected to the moving part (12). The transmission box (18) is provided with a third bevel gear (22). The lower end of the third bevel gear (22) is coaxially fixedly connected to a shaft. The shaft passes through the bottom wall of the transmission box (18) and is rotatably connected to it. The lower end of the shaft extends to the bottom of the moving part (12) and is fixedly connected to an adjustable telescopic rod (29). The telescopic end of the adjustable telescopic rod (29) is fixedly connected to a stirring block (30). A rotating sleeve (19) is rotatably connected between the two side walls of the gravel box (16) and the transmission box (18). The inner cross-section of the rotating sleeve (19) is regular hexagonal. Multiple stirring rods (20) are fixedly connected to the rotating sleeve (19) inside the gravel box (16). A second bevel gear (21) is fixedly sleeved on the rotating sleeve (19) inside the transmission box (18). The second bevel gear (21) meshes perpendicularly with the third bevel gear (22).

2. The deep oil extraction apparatus according to claim 1, characterized in that, The movable component (12) includes an I-shaped block, which is vertically inserted through the corresponding connecting frame (11). The upper and lower surfaces of the I-shaped block and the connecting frame (11) are in rolling contact through rollers.

3. The deep oil extraction apparatus according to claim 1, characterized in that, The drive assembly includes a bevel ring (13) fixedly connected to the lower end of four rotating blocks (9). The lower end of the bevel ring (13) extends to the bottom of the ring platform (7). A drive motor (14) is fixedly installed at the lower end of the ring platform (7). The drive end of the drive motor (14) is coaxially fixedly connected to a first bevel gear (15). The first bevel gear (15) meshes perpendicularly with the bevel ring (13).

4. A deep oil extraction apparatus according to claim 1, characterized in that, The transmission mechanism includes an annular toothed plate (23) fixedly connected to the annular platform (7). Two transmission gears (25) are meshed on the annular toothed plate (23) and arranged opposite to each other. Rotating rods (24) with a regular hexagonal cross section are fixedly connected to the transmission gears (25) on the same axis. The ends of the two rotating rods (24) away from the transmission gears (25) pass through the corresponding rotating sleeves (19) and are slidably connected to them. The ends of the two rotating rods (24) that are close to each other are rotatably connected to the upright plates. The two upright plates are fixedly connected to the limiting frame (10).

5. A deep oil extraction apparatus according to claim 1, characterized in that, Two connecting sleeves (28) are fixedly connected to the outer wall of the sleeve head (4), and the lower ends of the two moving parts (12) located at the front and rear positions are rotatably connected to the connecting parts; The connector is composed of two spaced-apart connecting rods (27), the spacing between the two connecting rods (27) is the same as the width of the connecting sleeve (28), and the end of the connecting rod (27) away from the moving part (12) is provided with a socket matching the connecting sleeve (28). The connecting rod (27) is rotatably connected to the corresponding connecting sleeve (28) by a pin.

6. A method of using a deep oil extraction apparatus according to any one of claims 1-5, characterized in that, The steps are as follows: S1. After the installation of the downhole oil production casing is completed, a circular gravel trough (2) is opened with the oil production casing (1) as the center. The ring base (3) is fixed along the edge of the gravel trough (2) to prevent the soil around the gravel trough (2) from collapsing and to play a supporting and protective role. Then, the ring platform (7) is erected through the support column (6), and the gravel spreading mechanism, spreading mechanism, drive component and transmission mechanism on the ring platform (7) are installed. S2. Load the gravel to be laid into the gravel box (16), and use the adjustable telescopic rod (29) to adjust the stirring block (30) to a position close to the bottom of the gravel trough (2). Then start the drive motor (14). The drive motor (14) drives the four rotating blocks (9) to rotate along the rotating groove (8) through the transmission of the first bevel gear (15) and the bevel gear ring (13), while making the four moving parts (12) make circular motion, thereby driving the gravel laying mechanism and the spreading mechanism above to make circular motion. During the circular motion of the S3 gravel spreading mechanism and the spreading mechanism, under the action of the corresponding transmission gear (25) and the rotating rod (24), the rotating sleeve (19) in the gravel box (16) and the transmission box (18) both rotate, so that the gravel in the gravel box (16) can be stirred by the stirring rod (20). Under the action of the stirring rod (20), the gravel in the gravel box (16) can be effectively discharged through the gravel discharge pipe (17), thereby being discharged into the gravel trough (2) and along the gravel trough ( 2) The edge is circumferentially gravel-laying work. At the same time, the rotating sleeve (19) in the transmission box (18) rotates synchronously. Under the transmission action of the second bevel gear (21) and the third bevel gear (22), the shaft and adjustable telescopic rod (29) below rotate, so that the stirring block (30) below rotates. While the stirring block (30) rotates on its own axis, it revolves around the gravel trough (2), thereby dispersing and spreading the gravel falling in front, so that the gravel is evenly laid at the bottom of the gravel trough (2). S4. Based on the actual diameter of the gravel trough (2), the positions of the gravel spreading mechanism and the sizing mechanism are moved. The bolts are screwed into the positioning screw holes (26) at the designated positions, so as to contact and abut against the moving parts (12) below the gravel spreading mechanism and the sizing mechanism, thereby fixing the position of the moving parts (12). The working positions of the gravel spreading mechanism and the sizing mechanism are changed multiple times, so as to effectively carry out the complete gravel filling work of the gravel trough (2). The gradual increase in the amount of gravel in the gravel trough (2) also improves the stability of the ring base (3). S5. When the gravel is laid to the end of the oil production casing (1), the gravel in the gravel groove (2) effectively protects the oil production casing (1) and keeps the oil production casing (1) stable. Then the workers can lift the casing head (4) into the limit frame (10) so that its threaded end is aligned with the thread groove of the oil production casing (1). Then, two pins are used to connect the two connectors to the two connecting casings (28). Then, under the connection of the connectors, when the moving part (12) rotates, it can drive the casing head (4) to rotate, thereby automatically screwing the threaded end of the casing head (4) into the thread groove of the oil production casing (1) to complete the installation of the casing head (4). Then, the connection of the connectors is released and the gravel laying work continues until the gravel groove (2) is filled. In this state, the bottom of the casing head (4) is also located in the gravel groove (2) and is wrapped by gravel to improve the support stability of the casing head (4). S6. After the tubing head and the tree are installed at the end of the casing head (4), the oil pump can be connected to carry out oil production.

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