Tubing conveyance and discharge apparatus for oilfield workover operations

Abstract

The present application belongs to the technical field of oilfield workover equipment, and particularly relates to a tubing conveying and discharging device for oilfield workover operation. The tubing conveying and discharging device for oilfield workover operation solves the technical defects of the prior art tubing conveying and discharging device, such as complex structure and low efficiency of conveying tubing. The structure is simpler and more compact, and the tubing conveying efficiency is higher. The tubing is only needed to be roughly put into the stacking box in the same direction, without the need of deliberately stacking the tubing neatly, thereby reducing the labor intensity of the workers. The tubing conveying and discharging device for oilfield workover operation comprises: a discharging box, the top of the discharging box is provided with an opening, and the bottom of the discharging box is provided with an inclined surface; a discharging port, the discharging port is arranged at the bottom of the discharging box; a switch assembly; a support; rollers; one of the rollers is driven by a servo motor; and a conveying belt, the conveying belt is sleeved outside the rollers.

Description

Technical Field

[0001] This invention belongs to the technical field of oilfield well workover equipment, and particularly relates to an oil pipeline conveying and discharging device for oilfield well workover operations. Background Technology

[0002] Oilfield well workover operations refer to the operations involved in oil drilling and subsequent well maintenance; these are the maintenance and upkeep measures taken to ensure the smooth operation of oil wells. Oilfield well workover operations require a large number of tubing pipes. Traditionally, the tubing was manually stacked and transported, involving a significant amount of handling work. Therefore, machinery has gradually replaced manual labor.

[0003] Chinese patent CN212614582U discloses an oil pipe conveying and discharging device, including a conveying device and a discharging device. The conveying device includes a first base, a rotating arm, and a conveying mechanism. The first end of the rotating arm is hinged to the first base, and the second end is rotatable around the first end. The conveying mechanism is used to move the oil pipe. The discharging device includes a second base, a guiding mechanism, a translation mechanism, a lifting mechanism, and a discharging mechanism. The second base has a first mounting part at its third end and a second mounting part at its fourth end. One end of the first base is detachably connected to either the first or second mounting part. This invention not only enables the conveying and discharging of oil pipes but also allows for changing the conveying direction of the conveying device by switching the connection between one end of the first base and either the first or second mounting part, thus expanding the device's applicability to well sites.

[0004] Chinese patent CN204024529U discloses an automated auxiliary device for oil and water well operations. The device comprises a base frame, a lifting and conveying trough, telescopic cylinders, a lifting mechanism, several lifting cylinders, several pipe-gripping mechanisms, several lifting mechanism support brackets, a discharge mechanism, and a control console. The device requires operator intervention via the control console. This tubing rod conveying device is used for well workover in oilfields. When installing tubing (or pump rod), it automatically transports and lifts the tubing (or pump rod) from the well site to the wellhead, ensuring the tubing (or pump rod) is hoisted and connected. When running tubing (or pump rod), it automatically transports the tubing (or pump rod) from the wellhead to the well site. This device eliminates the need for manual handling of tubing rods, saving time and labor, simplifying operation, facilitating use, and being environmentally friendly. It can be used in the development of large and medium-sized drilling enterprises.

[0005] Existing tubing conveying and discharge equipment, as described above, has a complex structure and low efficiency in conveying tubing. Furthermore, before conveying, the tubing must be manually stacked row by row, a labor-intensive, cumbersome, and difficult-to-arrange process. Therefore, there is an urgent need for those skilled in the art to provide a more convenient and simpler tubing conveying and discharge equipment for oilfield well workover operations. Summary of the Invention

[0006] This invention provides an oil pipe conveying and discharge device for oilfield well workover operations. This device overcomes the technical shortcomings of existing oil pipe conveying and discharge devices, which suffer from complex structures and low conveying efficiency. Its structure is simpler and more compact, resulting in higher oil pipe conveying efficiency. Oil pipes only need to be roughly placed into the stacking box in the same direction, eliminating the need for meticulously stacking them neatly and reducing the labor intensity of workers.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] Oilfield well workover operations use tubing conveying and discharge equipment, including:

[0009] Discharge box (1); The interior of discharge box (1) is used to store oil pipes. The top of discharge box (1) is provided with an opening, and the bottom of discharge box (1) is provided with a slope.

[0010] Discharge port (2); the discharge port (2) is located at the bottom of the discharge box (1);

[0011] Switch assembly; the switch assembly is used to control the opening and closing of the discharge port (2);

[0012] Support (3), roller (4), the support (3) and roller (4) are located below the discharge port (2); wherein, one of the rollers (4) is driven by a servo motor (5);

[0013] Conveyor belt (6), which is fitted on the outside of roller (4).

[0014] Preferably, a set of spacer strips (7) are evenly distributed on the outer side of the conveyor belt (6); the cross-sectional shape of the spacer strips (7) is an isosceles trapezoid, and the spacer strips (7) are made of rubber material.

[0015] Preferably, the switch assembly includes a mounting block (8), which is fixed to one side of the discharge port (2); the mounting block (8) has a groove (9) inside, which penetrates the side wall of the discharge port (2); a sliding plate (10) is slidably connected inside the groove (9); a screw hole (11) is provided on the side of the sliding plate (10) away from the discharge port (2); a screw (12) is rotatably connected inside the groove (9), and the screw (12) is driven by a servo motor (13); the screw (12) and the screw hole (11) are connected by a screw and nut pair.

[0016] Preferably, a pair of mounting brackets (14) are fixedly connected to the top outer side of the discharge box (1), and a pair of guide rods (15) are fixedly connected between the tops of the mounting brackets (14); an electric slide block (16) is slidably connected to the outside of the guide rods (15); a pair of side plates (17) are fixedly connected to both sides of the electric slide block (16); a set of organizing plates (18) are evenly distributed on the lower side of the side plates (17); a set of storage slots (19) are evenly distributed on the inner side of the discharge box (1); the organizing plates (18) correspond one-to-one with the storage slots (19), and the organizing plates (18) are located inside the storage slots (19).

[0017] Preferably, the thickness at both edges of the finishing plate (18) is less than the thickness at the center; a set of cylindrical grooves are evenly distributed on the surface of the finishing plate (18); a rotating rod (20) is rotatably connected inside the cylindrical groove, and the rotating rod (20) protrudes from the surface of the finishing plate (18).

[0018] Preferably, the spacer bar (7) has an installation groove (21) inside; a counterweight bar (22) is provided inside the installation groove (21); an elastic block (23) is fixedly connected inside the installation groove (21) at a position away from the conveyor belt (6); the elastic block (23) has a hollow structure and stores air inside the elastic block (23);

[0019] An elastic membrane (24) is fixed between adjacent spacers (7), and there is a gap between the elastic membrane (24) and the conveyor belt (6); the closed cavity formed between the elastic membrane (24) and the conveyor belt (6) is connected to the interior of the elastic block (23) through a conduit (25).

[0020] Preferably, a movable rod (26) is provided between the elastic membrane (24) and the conveyor belt (6) near the conduit (25); the diameter of the movable rod (26) is greater than the distance between the elastic membrane (24) and the conveyor belt (6); an elastic rope (27) is fixed between the side of the movable rod (26) near the conduit (25) and the conveyor belt (6).

[0021] Preferably, a magnetic sheet (28) is fixed inside the movable rod (26) near the elastic membrane (24); the elastic membrane (24) is made of flexible magnetic material, and the magnetic sheet (28) and the elastic membrane (24) attract each other.

[0022] This invention provides an oilfield well workover operation tubing conveying and discharging device, which includes structural units such as a discharge box (1), a discharge port (2), a switch assembly, a support (3), rollers (4), and a conveyor belt (6). Compared with the prior art, the oilfield well workover operation tubing conveying and discharging device with the above-mentioned structural features has at least the following beneficial effects:

[0023] 1. The oil pipe conveying and discharge equipment for oilfield well workover operations provided by this invention first places multiple oil pipes into the discharge box in the same direction. Then, a servo motor drives a roller to rotate, which in turn drives a conveyor belt to rotate. Subsequently, a switching component intermittently opens the discharge port. Under the action of gravity, the oil pipes inside the discharge box fall sequentially onto the surface of the conveyor belt through the discharge port and are transported to the wellhead by the conveyor belt for use in oilfield well workover operations. By setting the width of the discharge port to be slightly larger than the diameter of the oil pipe, only one oil pipe falls from the discharge port at a time, avoiding the problem of multiple oil pipes falling onto the conveyor belt at the same time and colliding with each other, which would cause the oil pipes to roll off and detach from the conveyor belt. This equipment has a simple structure and high oil pipe conveying efficiency. It is only necessary to put the oil pipes into the stacking box in the same direction, without the need to deliberately stack the oil pipes neatly, thus reducing the labor intensity of the workers.

[0024] 2. The oil pipe conveying and discharging device for oilfield well workover operations provided by the present invention, by setting multiple spacers, allows the oil pipe to fall between adjacent spacers after falling from the discharge port. When the conveyor belt transports the oil pipe to the wellhead, it is necessary to control the conveyor belt to stop moving. At this time, the spacers can limit the oil pipe and prevent the oil pipe from rolling forward and detaching from the conveyor belt under the action of inertia when the conveyor belt stops. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0026] Figure 1 This is a perspective view of the oil pipeline conveying and discharging equipment for oilfield well workover operations according to the present invention;

[0027] Figure 2 This is a cross-sectional view of the oil pipeline conveying and discharging device for oilfield well workover operations according to the present invention;

[0028] Figure 3 This is a cross-sectional view of the discharge box in the oil pipeline conveying and discharge equipment for oilfield well workover operations of the present invention;

[0029] Figure 4 yes Figure 3 Enlarged view of a portion of point A in the middle;

[0030] Figure 5 This is a perspective view of the discharge box in the oil pipeline conveying and discharge equipment for oilfield well workover operations of the present invention;

[0031] Figure 6 yes Figure 5 Enlarged view of a section at point B in the middle;

[0032] Figure 7 This is a perspective view of the sorting plate in the oil pipeline conveying and discharging equipment for oilfield well workover operations of the present invention;

[0033] Figure 8 This is a cross-sectional view of the spacer bar in the oil pipeline conveying and discharging device for oilfield well workover operations according to the present invention;

[0034] Figure 9 yes Figure 8 Enlarged view of a section at point C.

[0035] Reference numerals: 1. Discharge box; 2. Discharge port; 3. Support; 4. Roller; 5. Servo motor one; 6. Conveyor belt; 7. Spacer bar; 8. Mounting block; 9. Slide groove; 10. Slide plate; 11. Screw hole; 12. Screw; 13. Servo motor two; 14. Mounting bracket; 15. Guide rod; 16. Electric slide block; 17. Side plate; 18. Organizing plate; 19. Storage slot; 20. Rotating rod; 21. Mounting slot; 22. Counterweight rod; 23. Elastic block; 24. Elastic membrane; 25. Guide tube; 26. Movable rod; 27. Elastic rope; 28. Magnetic sheet. Detailed Implementation

[0036] This invention provides an oil pipe conveying and discharge device for oilfield well workover operations. This device overcomes the technical shortcomings of existing oil pipe conveying and discharge devices, which suffer from complex structures and low conveying efficiency. Its structure is simpler and more compact, resulting in higher oil pipe conveying efficiency. Oil pipes only need to be roughly placed into the stacking box in the same direction, eliminating the need for meticulously stacking them neatly and reducing the labor intensity of workers.

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Example 1

[0038] like Figures 1 to 2 As shown in the figure, the oilfield workover operation tubing conveying and discharging equipment of this invention includes:

[0039] Discharge box 1, the interior of discharge box 1 is used to store oil pipes; discharge box 1 has an opening at the top and a slope at the bottom.

[0040] Discharge port 2 is located at the bottom of discharge box 1.

[0041] A switch assembly is located at the bottom of the discharge box 1; the switch assembly is used to control the opening and closing of the discharge port 2.

[0042] Support 3 is located below the discharge port 2.

[0043] Roller 4, a set of rollers 4 is provided and rotatably connected to the top of support 3; one of the rollers 4 is driven by servo motor 5.

[0044] Conveyor belt 6 is mounted on the outside of a set of rollers 4.

[0045] It is worth noting that existing tubing conveying and discharge equipment has a relatively complex structure, low efficiency in conveying tubing, and requires manual stacking of tubing row by row before conveying. This stacking process is labor-intensive, cumbersome, and difficult to achieve neat stacking. In contrast, the tubing conveying and discharge equipment for oilfield well workover operations provided by this invention first places multiple tubings into the discharge box 1 in the same direction. Then, a servo motor 5 drives the roller 4 to rotate, which in turn drives the conveyor belt 6 to rotate. Afterward, the discharge port 2 is opened intermittently by a switching component. Under the action of gravity, the tubing inside the discharge box 1 falls sequentially onto the surface of the conveyor belt 6 through the discharge port 2 and is transported to the wellhead by the conveyor belt 6 for use in oilfield well workover operations. By setting the width of the discharge port 2 to be slightly larger than the diameter of the tubing, only one tubing falls from the discharge port 2 at a time, avoiding the problem of multiple tubings falling onto the conveyor belt 6 at the same time and colliding with each other, causing the tubing to roll off and detach from the conveyor belt 6. This equipment has a simple structure and high oil pipeline transportation efficiency. The oil pipelines only need to be roughly placed into the stacking box in the same direction, without the need to stack them neatly, which reduces the labor intensity of the workers.

[0046] Furthermore, in a preferred embodiment of the present invention, a set of spacers 7 are evenly distributed on the outer side of the conveyor belt 6; the cross-sectional shape of the spacers 7 is set as an isosceles trapezoid, and the spacers 7 are made of rubber material; by setting multiple spacers 7, the oil pipe can fall between adjacent spacers 7 after falling from the discharge port 2. When the conveyor belt 6 transports the oil pipe to the wellhead, it is necessary to control the conveyor belt 6 to stop moving. At this time, the spacers 7 can limit the oil pipe and prevent the oil pipe from rolling forward and detaching from the conveyor belt 6 under the action of inertia when the conveyor belt 6 stops. Example 2

[0047] like Figures 3 to 4As shown, another embodiment of the present invention is as follows: The switch assembly includes a mounting block 8, which is fixed to one side of the discharge port 2. A sliding groove 9 is formed inside the mounting block 8, and the sliding groove 9 penetrates the side wall of the discharge port 2. A sliding plate 10 is slidably connected inside the sliding groove 9. A screw hole 11 is formed on the side of the sliding plate 10 away from the discharge port 2. A screw 12 is rotatably connected inside the sliding groove 9, and the screw 12 is driven by a servo motor 13. The screw 12 and the screw hole 11 are connected by a screw and nut pair. When the discharge port 2 needs to be opened, the servo motor 13 drives the screw 12 to rotate forward, thereby driving the sliding plate 10 to enter the sliding groove 9, and the sliding plate 10 disengages from the discharge port 2. At this time, the discharge port 2 is in the open state, and the oil pipe inside the discharge box 1 can automatically fall through the discharge port 2. When the discharge port 2 needs to be closed, the servo motor 13 drives the screw 12 to rotate in reverse, thereby driving the screw 12 to slide the sliding plate 10 out of the sliding groove 9, and the sliding plate 10 moves into the discharge port 2. At this time, discharge port 2 is closed, making operation convenient and quick. Example 3

[0048] like Figures 5 to 7 As shown, another embodiment of the present invention is as follows: A pair of mounting brackets 14 are fixedly connected to the outer side of the top of the discharge box 1. A pair of guide rods 15 are fixedly connected between the tops of the pair of mounting brackets 14, and the guide rods 15 are located above the discharge box 1. An electric slide block 16 is slidably connected to the outer side of the guide rod 15. A pair of side plates 17 are fixedly connected to both sides of the electric slide block 16. A set of organizing plates 18 are evenly distributed on the lower side of the side plates 17. A set of storage slots 19 are evenly distributed on the inner side of the discharge box 1. The organizing plates 18 correspond one-to-one with the storage slots 19, and the organizing plates 18 are located inside the storage slots 19. During the process of placing the oil pipe into the discharge box 1, the electric slide 16 can drive a pair of side plates 17 to reciprocate above the discharge box 1. In turn, the side plates 17 drive multiple sorting plates 18 to move back and forth inside the discharge box 1, and the direction of movement is the same as the axis of the oil pipe. This sorts out the oil pipe inside the discharge box 1, so that the oil pipe can be automatically and neatly discharged, saving manpower and avoiding the problem that the oil pipe will tilt inside the discharge box 1 during the placement process, which would reduce the number of oil pipes that the discharge box 1 can hold.

[0049] The thickness at both edges of the sorting plate 18 is less than that at the center; a set of cylindrical grooves are evenly distributed on the surface of the sorting plate 18; a rotating rod 20 is rotatably connected inside the cylindrical groove, and the rotating rod 20 protrudes from the surface of the sorting plate 18; by setting multiple cylindrical grooves and rotating rods 20 on the surface of the sorting plate 18, when the sorting plate 18 moves the oil pipe, multiple rotating rods 20 contact the oil pipe and drive the rotating rods 20 to rotate, thereby reducing the frictional resistance between the sorting plate 18 and the oil pipe, further reducing equipment wear, and avoiding the problem of local deformation and damage to the oil pipe due to excessive friction between the sorting plate 18 and the oil pipe. Example 4

[0050] like Figures 8 to 9 As shown, another embodiment of the present invention is as follows: A mounting groove 21 is provided inside the spacer bar 7. A counterweight rod 22 is provided inside the mounting groove 21. An elastic block 23 is fixedly connected inside the mounting groove 21 at a position away from the conveyor belt 6. The elastic block 23 is a hollow structure, and air is stored inside the elastic block 23. An elastic membrane 24 is fixedly connected between adjacent spacer bars 7, and there is a gap between the elastic membrane 24 and the conveyor belt 6. The closed cavity formed between the elastic membrane 24 and the conveyor belt 6 communicates with the interior of the elastic block 23 through a conduit 25. Since the oil well is in an open-air environment, a lot of dust will fall on the surface of the conveyor belt 6 during use, affecting its normal operation. As the conveyor belt 6 rotates to the bottom of the roller 4, some of the dust on its surface will fall off naturally. At this time, the counterweight 22 moves downward under the action of gravity and squeezes the elastic block 23 inside the mounting groove 21. This forces the air inside the elastic block 23 into the closed cavity between the elastic membrane 24 and the conveyor belt 6 through the conduit 25, promoting the agitation of the elastic membrane 24. This improves the separation efficiency between the dust and the elastic membrane 24 and reduces the dust residue on the surface of the elastic membrane 24.

[0051] A movable rod 26 is positioned near the guide tube 25 between the elastic membrane 24 and the conveyor belt 6. The diameter of the movable rod 26 is larger than the distance between the elastic membrane 24 and the conveyor belt 6. An elastic rope 27 is fixedly connected between the movable rod 26 and the conveyor belt 6 on the side near the guide tube 25. By setting the movable rod 26 and the elastic rope 27, when air inside the elastic block 23 is injected into the space between the elastic membrane 24 and the conveyor belt 6 through the guide tube 25, the air can push the movable rod 26 to move away from the spacer strip 7. This causes the movable rod 26 to compress the elastic membrane 24 at different positions, resulting in continuous peristalsis of the elastic membrane 24, further improving the separation efficiency between dust and the elastic membrane 24.

[0052] A magnetic sheet 28 is fixedly attached to the inside of the movable rod 26 near the elastic membrane 24. The elastic membrane 24 is made of flexible magnetic material, and the magnetic sheet 28 and the elastic membrane 24 attract each other. By setting the magnetic sheet 28, the attractive force between the magnetic sheet 28 and the elastic membrane 24 is utilized to improve the fit between the movable rod 26 and the elastic membrane 24, ensuring that there is no air leakage between the movable rod 26 and the elastic membrane 24. This allows air to smoothly push the movable rod 26 forward, improving the compression efficiency of the movable rod 26 on the elastic membrane 24.

[0053] Working principle: Multiple tubings are first placed into the discharge box 1 in the same direction. Then, a servo motor 5 drives roller 4 to rotate, which in turn drives the conveyor belt 6. A switching assembly then intermittently opens the discharge port 2. Under gravity, the tubings inside the discharge box 1 fall sequentially onto the surface of the conveyor belt 6 through the discharge port 2, and are transported to the wellhead by the conveyor belt 6 for oilfield well workover operations. By setting the width of the discharge port 2 slightly larger than the diameter of the tubing, only one tubing falls at a time, preventing multiple tubings from falling onto the conveyor belt 6 simultaneously, colliding with each other, and causing the tubing to roll off and detach from the conveyor belt 6. The equipment has a simple structure and high tubing transport efficiency. Tubing only needs to be roughly placed into the stacking box in the same direction, eliminating the need for meticulous stacking and reducing the workload of workers. Multiple spacers 7 ensure that the tubing falls between adjacent spacers 7 after exiting the discharge port 2. When the conveyor belt 6 transports the tubing to the wellhead, it needs to be stopped. At this time, the spacers 7 can limit the tubing, preventing it from rolling forward and detaching from the conveyor belt 6 due to inertia. When the discharge port 2 needs to be opened, the servo motor 13 drives the screw 12 to rotate forward, which in turn drives the sliding plate 1. When the oil pipe is inserted into the chute 9, the slide plate 10 disengages from the discharge port 2, which is now open. The oil pipe inside the discharge box 1 can then automatically fall through the discharge port 2. To close the discharge port 2, the servo motor 13 drives the screw 12 to reverse, causing the screw 12 to slide the slide plate 10 out of the chute 9. The slide plate 10 then moves into the discharge port 2, which is now closed. This operation is convenient and quick. During the process of inserting the oil pipe into the discharge box 1, the electric slide block 16 drives a pair of side plates 17 to reciprocate above the discharge box 1. The side plates 17 then drive multiple sorting plates 18 to move back and forth inside the discharge box 1, with the direction of movement parallel to the oil pipe. The pipes are aligned along the same axis, thus organizing the oil pipes inside the discharge box 1. This allows the oil pipes to be automatically and neatly discharged, saving manpower and preventing the oil pipes from tilting inside the discharge box 1 during placement, which would reduce the capacity of the discharge box 1. By setting multiple cylindrical grooves and rotating rods 20 on the surface of the organizing plate 18, when the organizing plate 18 moves the oil pipes, the multiple rotating rods 20 contact the oil pipes and drive the rotating rods 20 to rotate, thereby reducing the frictional resistance between the organizing plate 18 and the oil pipes, further reducing equipment wear, and preventing the oil pipes from being deformed and damaged locally due to excessive friction between the organizing plate 18 and the oil pipes.Since the oil well is in an open-air environment, a lot of dust will fall onto the surface of the conveyor belt 6 during use, affecting its normal operation. As the conveyor belt 6 rotates to the underside of the roller 4, some of the dust on its surface will fall off naturally. At this time, the counterweight 22 moves downward under the action of gravity and squeezes the elastic block 23 inside the mounting groove 21. This forces the air inside the elastic block 23 into the closed cavity between the elastic membrane 24 and the conveyor belt 6 through the conduit 25, promoting the agitation of the elastic membrane 24. This improves the separation efficiency between the dust and the elastic membrane 24 and reduces the dust residue on the surface of the elastic membrane 24. By setting the movable rod 26 and the elastic rope 27, when the elastic block 23 moves downward, the counterweight 22 moves downward under the action of gravity, squeezing the elastic block 23 inside the mounting groove 21. This forces the air inside the elastic block 23 into the closed cavity between the elastic membrane 24 and the conveyor belt 6 through the conduit 25, promoting the agitation of the elastic membrane 24. This improves the separation efficiency between the dust and the elastic membrane 24 and reduces the dust residue on the surface of the elastic membrane 24. When the internal air is injected into the space between the elastic membrane 24 and the conveyor belt 6 through the conduit 25, the air can push the movable rod 26 to move away from the spacer 7. This causes the movable rod 26 to compress the elastic membrane 24 at different positions, resulting in continuous peristalsis of the elastic membrane 24 and further improving the separation efficiency between dust and the elastic membrane 24. By setting a magnetic sheet 28, the attraction between the magnetic sheet 28 and the elastic membrane 24 is utilized to improve the adhesion between the movable rod 26 and the elastic membrane 24, preventing air leakage. This allows the air to smoothly push the movable rod 26 forward, improving the compression efficiency of the movable rod 26 on the elastic membrane 24.

[0054] Finally, it should be noted that the aforementioned front, back, left, right, top, and bottom refer to the figures in the instruction manual. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0055] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0056] This invention provides an oilfield well workover operation tubing conveying and discharging device, which includes structural units such as a discharge box (1), a discharge port (2), a switch assembly, a support (3), rollers (4), and a conveyor belt (6). Compared with the prior art, the oilfield well workover operation tubing conveying and discharging device with the above-mentioned structural features has at least the following beneficial effects:

[0057] 1. The oil pipe conveying and discharge equipment for oilfield well workover operations described in this invention first places multiple oil pipes into the discharge box in the same direction. Then, a servo motor drives a roller to rotate, which in turn drives a conveyor belt to rotate. Subsequently, a switching component intermittently opens the discharge port. Under the action of gravity, the oil pipes inside the discharge box fall sequentially onto the surface of the conveyor belt through the discharge port and are transported to the wellhead by the conveyor belt for use in oilfield well workover operations. By setting the width of the discharge port to be slightly larger than the diameter of the oil pipe, only one oil pipe falls from the discharge port at a time, avoiding the problem of multiple oil pipes falling onto the conveyor belt at the same time and colliding with each other, which would cause the oil pipes to roll off and detach from the conveyor belt. This equipment has a simple structure and high oil pipe conveying efficiency. It is only necessary to put the oil pipes into the stacking box in the same direction, without the need to deliberately stack the oil pipes neatly, thus reducing the labor intensity of the workers.

[0058] 2. The oil pipe conveying and discharging equipment for oilfield well workover operations described in this invention, by setting multiple spacers, ensures that the oil pipe falls between adjacent spacers after falling from the discharge port. When the conveyor belt transports the oil pipe to the wellhead, it is necessary to control the conveyor belt to stop moving. At this time, the spacers can limit the oil pipe, preventing the oil pipe from rolling forward and detaching from the conveyor belt under inertia when the conveyor belt stops.

[0059] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An oil pipeline conveying and discharge device for oilfield well workover operations, characterized in that, Including: Discharge box (1); The interior of discharge box (1) is used to store oil pipes. The top of discharge box (1) is provided with an opening, and the bottom of discharge box (1) is provided with a slope. Discharge port (2); the discharge port (2) is located at the bottom of the discharge box (1); Switch assembly; the switch assembly is used to control the opening and closing of the discharge port (2); Support (3), roller (4), the support (3) and roller (4) are located below the discharge port (2); wherein, one of the rollers (4) is driven by a servo motor (5); Conveyor belt (6), the conveyor belt (6) being sleeved on the outside of roller (4); A pair of mounting brackets (14) are fixedly connected to the top outer side of the discharge box (1), and a pair of guide rods (15) are fixedly connected between the tops of the mounting brackets (14); an electric slide block (16) is slidably connected to the outside of the guide rods (15); a pair of side plates (17) are fixedly connected to both sides of the electric slide block (16); a set of organizing plates (18) are evenly distributed on the lower side of the side plate (17); a set of storage slots (19) are evenly distributed on the inner side of the discharge box (1); the organizing plate (18) corresponds to the storage slot (19) one by one, and the organizing plate (18) is located inside the storage slot (19).

2. The oil pipeline conveying and discharge equipment for oilfield well workover operations according to claim 1, characterized in that: A set of spacer bars (7) are evenly distributed on the outer side of the conveyor belt (6); the cross-sectional shape of the spacer bars (7) is an isosceles trapezoid, and the spacer bars (7) are made of rubber material.

3. The oil pipeline conveying and discharge equipment for oilfield well workover operations according to claim 1, characterized in that: The switch assembly includes a mounting block (8), which is fixed to one side of the discharge port (2); a sliding groove (9) is provided inside the mounting block (8), and the sliding groove (9) penetrates the side wall of the discharge port (2); a sliding plate (10) is slidably connected inside the sliding groove (9); a screw hole (11) is provided on the side of the sliding plate (10) away from the discharge port (2); a screw (12) is rotatably connected inside the sliding groove (9), and the screw (12) is driven by a servo motor (13); the screw (12) and the screw hole (11) are connected by a screw and nut pair.

4. The oil pipeline conveying and discharge equipment for oilfield well workover operations according to claim 1, characterized in that: The thickness at both sides of the finishing plate (18) is less than the thickness at the center; a set of cylindrical grooves are evenly distributed on the surface of the finishing plate (18); a rotating rod (20) is rotatably connected inside the cylindrical groove, and the rotating rod (20) protrudes from the surface of the finishing plate (18).

5. The oil pipeline conveying and discharge equipment for oilfield well workover operations according to claim 2, characterized in that: The spacer bar (7) has an installation groove (21) inside; a counterweight rod (22) is provided inside the installation groove (21); an elastic block (23) is fixedly connected inside the installation groove (21) at a position away from the conveyor belt (6); the elastic block (23) has a hollow structure and stores air inside the elastic block (23); An elastic membrane (24) is fixed between adjacent spacers (7), and there is a gap between the elastic membrane (24) and the conveyor belt (6); the closed cavity formed between the elastic membrane (24) and the conveyor belt (6) is connected to the interior of the elastic block (23) through a conduit (25).

6. The oil pipeline conveying and discharge equipment for oilfield well workover operations according to claim 5, characterized in that: A movable rod (26) is provided between the elastic membrane (24) and the conveyor belt (6) near the conduit (25); the diameter of the movable rod (26) is greater than the distance between the elastic membrane (24) and the conveyor belt (6); an elastic rope (27) is fixed between the side of the movable rod (26) near the conduit (25) and the conveyor belt (6).

7. The oil pipeline conveying and discharge equipment for oilfield well workover operations according to claim 6, characterized in that: A magnetic sheet (28) is fixed inside the movable rod (26) near the elastic membrane (24); the elastic membrane (24) is made of flexible magnetic material, and the magnetic sheet (28) and the elastic membrane (24) attract each other.

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