Wax removal tool bit capable of simultaneously heating up and down

Abstract

The invention belongs to the technical field of wax removal tool bits, and discloses a wax removal tool bit capable of being heated up and down simultaneously, which comprises a cable head electrically connected with a cable, the cable head is connected with a middle-section tool bit, the middle-section tool bit is connected with a weighting rod, the weighting rod is connected with a lower-section tool bit, and the lower-section tool bit is connected with the upper-section tool bit. By additionally arranging the middle-section tool bit, both the middle-section tool bit and the lower-section tool bit can release heat during use, so that the middle-section tool bit can heat and soften wax during recovery, the problem that an instrument is stuck in a well and cannot be recovered smoothly is solved, and the recovery efficiency of the instrument is improved. Therefore, the device is protected from being damaged, and smooth operation is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of wax removal cutter heads, and in particular relates to a wax removal cutter head capable of being heated simultaneously at the top and bottom. Background Art

[0002] During the process of oil exploration and production, as the oil wells continue to operate, the oil components carried in the oil tend to solidify into wax as the temperature and pressure downhole decrease. If these waxy deposits are not cleaned in time, they will not only clog the wellhead and oil pipeline, affecting the fluidity and production efficiency of crude oil, but may also cause damage to oil production equipment, increasing maintenance costs and safety risks.

[0003] Although the existing single-head heating and wax removal device can effectively soften and remove wax, after being lowered into the lower section of the well for continuous wax removal operations, when it needs to be recovered, the softened wax in the upper section of the well may have re-solidified, causing the cutter head to be stuck in the well and unable to be successfully recovered, which undoubtedly increases the difficulty and cost of the operation. Summary of the Invention

[0004] In view of the problems raised by the above background technology, the purpose of the present invention is to provide a wax removal cutter head that can be heated at the top and bottom simultaneously.

[0005] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows:

[0006] A wax removal cutter head capable of being heated at the top and bottom simultaneously, comprising a cable head electrically connected to a cable, the cable head being connected to a middle cutter head, the middle cutter head being connected to a weighting rod, the weighting rod being connected to a lower cutter head, and heating components being installed inside both the middle cutter head and the lower cutter head;

[0007] The middle section cutter head includes a middle section joint that is plugged and matched with the cable head, a middle section single-core socket is installed in the middle section joint, the middle section single-core socket is electrically connected to the cable head, the middle section joint is connected to the middle section shell, the middle section shell is connected to two halves of the threaded ring, the two halves of the threaded ring are installed with a transition joint, and the two ends of the transition joint are respectively installed with a wire tube and a middle section single-core pin;

[0008] The weighting rod includes a rod body plugged into the transition joint, a single-core socket is installed in the rod body, the single-core socket is electrically connected to the middle single-core pin, a line channel is provided inside the rod body, and a single-core pin is installed in the rod body;

[0009] The lower section cutter head includes a lower section joint plugged into the rod body, a lower section single-core socket is installed in the lower section joint, the lower section single-core socket is electrically connected to the single-core pin, the lower section joint is connected to the lower section housing, and the lower section housing is integrally provided with a conical head;

[0010] The heating assembly includes a porcelain tube provided in the middle joint and the lower joint, and the heating assembly includes a first corundum tube and a second corundum tube connected to the ends of the middle joint and the lower joint, the second corundum tube is located inside the first corundum tube, the second corundum tube and the first corundum tube are coaxial, and a resistance wire is wound around the outside of the second corundum tube;

[0011] Wires for supplying power to the resistance wire are installed in the porcelain tube, the line channel and the second corundum tube.

[0012] It is further defined that threaded connections are adopted between the middle section shell and the middle section joint, as well as between the lower section shell and the lower section joint. Such a design allows for quick and convenient assembly and disassembly, the disassembled structure is conducive to storage, and the quick installation is conducive to operational efficiency.

[0013] It is further defined that the middle section joint and the lower section joint are both provided with sealing grooves, and sealing rings are installed in the sealing grooves. Such a design ensures the sealing of the connection.

[0014] It is further defined that the first corundum tube is evenly provided with a plurality of through holes. Such a design is conducive to the transfer of heat to the outer shell.

[0015] It is further defined that the outer sides of the middle shell, the rod body and the lower shell are all provided with flat notches. Such a design facilitates the use of tools such as pliers to screw the corresponding middle shell, rod body and lower shell to ensure the firmness of the connection.

[0016] It is further defined that the specifications and models of the middle section joint and the lower section joint are the same, and the middle section joint and the lower section joint are both provided with interference steps that match the specifications of the first corundum tube, and the middle section joint and the lower section joint are both provided with installation slots that match the specifications of the second corundum tube. This design does not require classified storage and can be directly adapted for installation. In addition, the splicing method can be selected according to needs, making it more flexible to use.

[0017] It is further defined that both the middle joint and the lower joint are provided with fixing holes for fixing the second corundum tube. Such a design can use accessories such as screws to enhance the fixing effect and connection strength of the second corundum tube, and can also serve as a wire hole for the wire to pass through.

[0018] The beneficial effects of the present invention are as follows:

[0019] The present invention has a compact structure, is easy to operate and maintain, and reduces the cost of use;

[0020] The present invention adds a middle cutter head. When in use, both the middle cutter head and the lower cutter head can release heat. Therefore, during recovery, the middle cutter head can also heat and soften the wax, thereby preventing the instrument from getting stuck in the well and being unable to be recovered smoothly. This not only protects the device from damage, but also ensures the smooth progress of the operation.

[0021] In this structure, by adjusting the heating parameters of the resistance wire in the heating assembly, the heating temperature can be adjusted according to actual conditions to adapt to different well environments, wax properties and device temperature resistance requirements. This flexibility enables this solution to be widely used in various types of downhole operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

[0023] Figure 1 This is a structural schematic diagram of an embodiment of a wax removal cutter head capable of being heated both at the top and bottom simultaneously according to the present invention;

[0024] Figure 2 This is a schematic cross-sectional view of a middle section of a wax removal cutter head capable of being heated both at the top and bottom of the cutter head according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic cross-sectional structure diagram of a weighted rod according to an embodiment of a wax removal cutter head capable of being heated both at the top and the bottom simultaneously;

[0026] Figure 4 This is a schematic cross-sectional structure diagram of the lower section of a wax removal cutter head capable of being heated both at the top and bottom simultaneously according to an embodiment of the present invention;

[0027] The main component symbols are described as follows:

[0028] Cable head 1; middle blade 2; weighting rod 3; lower blade 4; heating assembly 5; sealing groove 6; sealing ring 7; flat notch 8; contact step 9; mounting notch 10; fixing hole 11;

[0029] Middle section connector 21; middle section single core socket 22; middle section housing 23; two halves of threaded ring 24; transition joint 25; wire conduit 26; middle section single core pin 27;

[0030] Rod body 31; single core socket 32; line channel 33; single core pin 34;

[0031] Lower connector 41; lower single-core socket 42; lower housing 43; conical head 44;

[0032] Porcelain tube 51 ; first corundum tube 52 ; second corundum tube 53 ; resistance wire 54 ; through hole 55 . DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0034] like Figures 1 to 4 As shown, a wax removal cutter head capable of heating the upper and lower parts simultaneously of the present invention comprises a cable head 1 electrically connected to a cable, the cable head 1 being connected to a middle cutter head 2, the middle cutter head 2 being connected to a weighting rod 3, the weighting rod 3 being connected to a lower cutter head 4, and a heating assembly 5 being installed inside both the middle cutter head 2 and the lower cutter head 4;

[0035] The middle section cutter head 2 includes a middle section connector 21 that is plugged and matched with the cable head 1. A middle section single-core socket 22 is installed in the middle section connector 21. The middle section single-core socket 22 is electrically connected to the cable head 1. The middle section connector 21 is connected to a middle section housing 23. The middle section housing 23 is connected to two halves of a threaded ring 24. The two halves of the threaded ring 24 are installed with a transition connector 25. The two ends of the transition connector 25 are respectively installed with a wire tube 26 and a middle section single-core pin 27;

[0036] The weighting rod 3 includes a rod body 31 plugged into the transition joint 25, a single-core socket 32 ​​is installed in the rod body 31, and the single-core socket 32 ​​is electrically connected to the middle single-core pin 27. A line channel 33 is provided inside the rod body 31, and a single-core pin 34 is installed in the rod body 31;

[0037] The lower blade head 4 includes a lower connector 41 that is plugged into the rod body 31. A lower single-core socket 42 is installed in the lower connector 41. The lower single-core socket 42 is electrically connected to the single-core pin 34. The lower connector 41 is connected to a lower housing 43. The lower housing 43 is integrally provided with a tapered head 44.

[0038] The heating assembly 5 includes a porcelain tube 51 disposed in the middle joint 21 and the lower joint 41. The heating assembly 5 includes a first corundum tube 52 and a second corundum tube 53 connected to the ends of the middle joint 21 and the lower joint 41. The second corundum tube 53 is located inside the first corundum tube 52 and is coaxial with the first corundum tube 52. A resistance wire 54 is wound around the outside of the second corundum tube 53.

[0039] Wires for supplying power to the resistance wire 54 are installed in the porcelain tube 51 , the line channel 33 and the second corundum tube 53 .

[0040] In this embodiment, when using a wax removal cutter head that can be heated at the top and bottom simultaneously, a connection is formed between the middle section connector 21 in the middle section cutter head 2 and the cable head 1. When the connection is completed, the cable head 1 is inserted into the middle section single-core socket 22 to realize power supply to the middle section single-core socket 22, and power is supplied to the resistance wire 54 in the middle section cutter head 2 through the wire, so that the middle section cutter head 2 is heated;

[0041] The middle section cutter head 2 is connected to the weighting rod 3 through the transition joint 25. When the connection is completed, the middle section single-core pin 27 is inserted into the single-core socket 32 ​​to achieve circuit connectivity and power supply to the single-core pin 34 installed in the weighting rod 3. The weighting rod 3 increases the overall mass of the operating equipment to enhance the gravity effect, thereby overcoming the lowering resistance and ensuring smooth equipment deployment. At the same time, the dynamic optimization design reduces unnecessary vibration and swing, improves the stability and safety of the lowering, and significantly increases the lowering speed.

[0042] The lower section cutter head 4 is connected to the weighting rod 3 through the lower section connector 41. When the connection is completed, the single-core pin 34 is inserted into the lower section single-core socket 42 to achieve circuit connectivity, and the resistance wire 54 in the lower section cutter head 4 can also obtain circuit supply.

[0043] In the heating assembly 5, the corundum tube is made of high-temperature resistant material. The first corundum tube 52 protects the resistance wire 54 and prevents the resistance wire 54 from contacting the outer shell to maintain insulation. The second corundum tube 53 wraps the resistance wire 54 around it to facilitate the fixation and positioning of the resistance wire 54.

[0044] In summary, both the middle cutter head 2 and the lower cutter head 4 achieve the heating effect through the internal resistance wire 54. During the lowering process, the device increases the voltage and strengthens the heat output generated by the resistance wire 54. As the temperature rises, the wax deposits on the surface and around the lower cutter head 4 begin to melt. The melted wax reduces the resistance in the well, allowing the device to pass through the area originally blocked by wax more quickly. During recovery, because the middle cutter head 2 also carries heat, the wax deposits on the surface and around the middle cutter head 2 will also be melted, thereby achieving the purpose of facilitating recovery.

[0045] Preferably, threaded connections are used between the middle shell 23 and the middle joint 21, as well as between the lower shell 43 and the lower joint 41. Such a design makes disassembly and assembly quick and convenient, the disassembled structure is conducive to storage, and the quick installation is conducive to operational efficiency. In fact, the connection method can also be considered according to specific circumstances, such as using screws for fixing.

[0046] Preferably, both the middle joint 21 and the lower joint 41 are provided with a sealing groove 6, and a sealing ring 7 is installed in the sealing groove 6. Such a design ensures the sealing of the connection. In fact, sealing measures can also be considered according to specific circumstances.

[0047] Preferably, the first corundum tube 52 is evenly provided with a plurality of through holes 55. Such a design is conducive to the transfer of heat to the outer shell. In fact, the position and specifications of the through holes 55 can also be considered according to specific circumstances.

[0048] Preferably, the outer sides of the middle shell 23, the rod body 31 and the lower shell 43 are provided with a flat groove 8. Such a design facilitates the use of tools such as pliers to screw the corresponding middle shell 23, the rod body 31 and the lower shell 43 to ensure the firmness of the connection. In fact, a structure that is conducive to screwing can also be considered according to specific circumstances.

[0049] Preferably, the middle joint 21 and the lower joint 41 have the same specifications and models. Both the middle joint 21 and the lower joint 41 are provided with an interference step 9 that matches the specifications of the first corundum tube 52, and both the middle joint 21 and the lower joint 41 are provided with an installation groove 10 that matches the specifications of the second corundum tube 53. Such a design does not require classified storage and can be directly adapted for installation. In addition, the splicing method can be selected according to needs, which is more flexible to use. In fact, the specifications of the middle joint 21 and the lower joint 41 can also be considered according to specific circumstances.

[0050] Preferably, both the middle joint 21 and the lower joint 41 are provided with a fixing hole 11 for fixing the second corundum tube 53. With this design, screws and other accessories can be used to enhance the fixing effect and connection strength of the second corundum tube 53. It can also be used as a wire hole for the wire to pass through. In fact, a structure that is conducive to wiring can also be considered according to specific circumstances.

[0051] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A wax removal knife head capable of being heated at both the top and the bottom, comprising a cable head (1) electrically connected to a cable, characterized in that: The cable head (1) is connected to a middle section blade head (2), the middle section blade head (2) is connected to a weighting rod (3), the weighting rod (3) is connected to a lower section blade head (4), and a heating component (5) is installed inside the middle section blade head (2) and the lower section blade head (4); The middle section blade head (2) comprises a middle section connector (21) which is plugged and matched with the cable head (1); a middle section single-core socket (22) is installed in the middle section connector (21); the middle section single-core socket (22) is electrically connected to the cable head (1); the middle section connector (21) is connected to a middle section shell (23); the middle section shell (23) is connected to two halves of a threaded ring (24); the two halves of the threaded ring (24) are installed with a transition connector (25); and the two ends of the transition connector (25) are respectively installed with a wire tube (26) and a middle section single-core pin (27); The weighting rod (3) comprises a rod body (31) plugged into the transition joint (25), a single-core socket (32) is installed in the rod body (31), the single-core socket (32) is electrically connected to the middle single-core plug pin (27), a line channel (33) is provided inside the rod body (31), and a single-core plug pin (34) is installed in the rod body (31); The lower section cutter head (4) comprises a lower section joint (41) plugged into the rod body (31), a lower section single-core socket (42) is installed in the lower section joint (41), the lower section single-core socket (42) is electrically connected to the single-core pin (34), the lower section joint (41) is connected to a lower section shell (43), and the lower section shell (43) is integrally provided with a conical head (44); The heating component (5) comprises a porcelain tube (51) arranged in the middle section joint (21) and the lower section joint (41), and the heating component (5) comprises a first corundum tube (52) and a second corundum tube (53) connected to the ends of the middle section joint (21) and the lower section joint (41), the second corundum tube (53) being located inside the first corundum tube (52), the second corundum tube (53) and the first corundum tube (52) being coaxial, and a resistance wire (54) being wound around the outer side of the second corundum tube (53); Wires for supplying power to the resistance wire (54) are installed in the porcelain tube (51), the line channel (33) and the second corundum tube (53).

2. The wax removal cutter head capable of being heated both at the top and the bottom according to claim 1, characterized in that: The middle section housing (23) and the middle section joint (21) as well as the lower section housing (43) and the lower section joint (41) are both connected by threads.

3. The wax removal cutter head capable of being heated both at the top and the bottom according to claim 2, characterized in that: The middle section joint (21) and the lower section joint (41) are both provided with a sealing groove (6), and a sealing ring (7) is installed in the sealing groove (6).

4. The wax removal cutter head capable of being heated both at the top and the bottom according to claim 3, characterized in that: The first corundum tube (52) is evenly provided with a plurality of through holes (55).

5. The wax removal cutter head capable of being heated both at the top and the bottom according to claim 4, characterized in that: Plane notches (8) are provided on the outer sides of the middle shell (23), the rod body (31) and the lower shell (43).

6. The wax removal cutter head capable of being heated both at the top and the bottom according to claim 5, characterized in that: The middle section joint (21) and the lower section joint (41) have the same specifications and models; the middle section joint (21) and the lower section joint (41) are both provided with abutment steps (9) matching the specifications of the first corundum tube (52); and the middle section joint (21) and the lower section joint (41) are both provided with mounting notches (10) matching the specifications of the second corundum tube (53).

7. The wax removal cutter head capable of being heated both at the top and the bottom according to claim 6, characterized in that: The middle section joint (21) and the lower section joint (41) are both provided with a fixing hole (11) for fixing the second corundum tube (53).

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