A hollow travelling block for hoisting drill pipes

Abstract

The application discloses a hollow traveling block for hoisting a drill rod and relates to the technical field of oil drilling. The hollow traveling block comprises a traveling block assembly and an ear assembly. The traveling block assembly comprises a first side plate and a second side plate. The first side plate and the second side plate are oppositely arranged along a first direction. A hoisting plate is arranged between the first side plate and the second side plate. The first side plate and the second side plate are welded together through the hoisting plate. The first side plate is provided with a first pulley, and the second side plate is provided with a second pulley. The first side plate and the second side plate are welded together through the hoisting plate. The ear assembly is fixedly connected to the traveling block assembly. The ear assembly is provided with a containing portion. When the hollow traveling block hoists the drill rod, at least part of the drill rod is contained in the containing portion. The hollow traveling block disclosed by the application can save a crown block, and has the advantages of simple structure, low cost, convenient operation, etc. At least part of the drill rod is contained in the containing portion formed on the ear assembly, the height of the derrick can be reduced, and the cost of the drilling equipment can be saved.

Description

Technical Field

[0001] This invention belongs to the field of petroleum drilling technology, specifically relating to a hollow traveling block for lifting drill pipes. Background Technology

[0002] Currently, in the field of oil drilling technology, when oilfields are working over wells and lifting tubing, they generally use a traveling block hook to lift the drill pipe. The traveling block hook is located at the top of the drill pipe and requires a lot of space to lift the drill pipe. Summary of the Invention

[0003] To address the aforementioned problems in the prior art, this application provides a hollow traveling block for lifting drill pipes. By combining the lifting section and the traveling block section, a space is created on the traveling block for the drill pipe to pass through, eliminating the need for a large drill hook, reducing the derrick height, and saving on drilling equipment costs. The technical problem to be solved by this invention is achieved through the following technical solution:

[0004] This application provides a hollow traveling block for lifting drill pipes. The hollow traveling block includes a traveling block assembly and a lifting lug assembly. The traveling block assembly includes a first side plate and a second side plate, which are disposed opposite to each other along a first direction. A lifting plate is disposed between the first side plate and the second side plate, and the first side plate and the second side plate are welded together by the lifting plate. The first side plate is provided with a first pulley, and the second side plate is provided with a second pulley. The first side plate and the second side plate are welded together by the lifting plate. The lifting lug assembly is fixedly connected to the traveling block assembly and is provided with a receiving portion, in which at least a portion of the drill pipe is received when the hollow traveling block lifts the drill pipe.

[0005] In one possible implementation of this application, the lug assembly includes a receiving member with a through hole extending along a second direction, the through hole forming a receiving portion, the second direction being perpendicular to the first direction.

[0006] In one possible implementation of this application, the cross-sectional shape of the through hole along the first direction is arc-shaped, the arc corresponding to the through hole is greater than 180°, and along the radial direction of the through hole, an opening groove is formed on the surface of one side of the receiving member.

[0007] In one possible implementation of this application, the end of the receiver near the carriage assembly extends between the first side plate and the second side plate, and the dimension of the end of the receiver away from the lug assembly along the first direction is greater than the gap between the first side plate and the second side plate.

[0008] In one possible implementation of this application, a lifting hole is provided at the end of the lifting plate away from the lifting lug assembly.

[0009] In one possible implementation of this application, the end of the lifting plate away from the traveling carriage assembly is a left-right symmetrical angle, and the lifting hole is located on the line of symmetry.

[0010] In one possible implementation of this application, the traveling carriage assembly is fixedly connected to the lug assembly by fasteners.

[0011] In one possible implementation of this application, the number of fasteners is at least two, and the fasteners are arranged in an array.

[0012] In one possible implementation of this application, the projection of the lifting plate along the second direction is located on the side of the through hole away from the opening slot.

[0013] In one possible implementation of this application, the surface of the receiving element is provided with lifting lugs.

[0014] The hollow traveling block provided in this application embodiment, by combining the traveling block assembly and the lifting lug assembly, eliminates the need for a large hook, resulting in a simple structure, low cost, and convenient operation. Furthermore, by forming a receiving portion on the lifting lug assembly to accommodate at least a portion of the drill pipe, allowing the drill pipe to pass through, the derrick height can be reduced, saving on drilling equipment costs. Attached Figure Description

[0015] Figure 1 A schematic diagram of a hollow traveling block for lifting drill rods provided in an embodiment of this application. Figure 1 ;

[0016] Figure 2 A schematic diagram of a hollow traveling block for lifting drill rods provided in an embodiment of this application. Figure 2 ;

[0017] Figure 3 A schematic diagram of a hollow traveling block for lifting drill rods provided in an embodiment of this application. Figure 3 .

[0018] Figure label:

[0019] 1-Traveling carriage assembly; 11-First side plate; 12-Second side plate; 13-Lifting plate; 131-Lifting hole; 14-First pulley; 15-Second pulley; 16-Pulley shaft; 17-Bearing; 2-Lifting lug assembly; 21-Receiving part; 22-Receiving component; 221-Through hole; 222-Opening slot; 3-Fastener; 4-Lifting lug; 41-Lifting lug body; 42-Lug protector; 43-Bolt. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0021] Currently, in the field of oil drilling technology, when oilfields perform well workover and lift tubing, they generally use a traveling block hook to lift the drill pipe. The traveling block hook is located at the top of the drill pipe, requiring a considerable amount of space to lift it. When lifting the drill pipe, a lifting ring is suspended using the hook lugs, and the lifting ring holds the tubing clamp to lift and lower the tubing. This requires a large amount of equipment and space to arrange the derrick, resulting in high drilling equipment costs.

[0022] In view of this, the present application provides a hollow traveling block for lifting drill pipe. By combining the lifting lug assembly and the traveling block assembly into a whole design, a clearance space can be formed on the traveling block to allow the drill pipe or part of the drill pipe to pass through, thereby eliminating the need for a large drilling hook, reducing the height of the derrick, and saving the cost of drilling equipment.

[0023] Specifically, refer to Figures 1 to 3 The hollow traveling block for lifting drill rods provided in this application includes a traveling block assembly 1 and a lifting lug assembly 2. The traveling block assembly 1 includes a first side plate 11 and a second side plate 12, which are arranged opposite each other along a first direction. A lifting plate 13 is disposed between the first side plate 11 and the second side plate 12. The first side plate 11 is provided with a first pulley 14, and the second side plate 12 is provided with a second pulley 15. The first side plate 11 and the second side plate 12 are welded together by the lifting plate 13. The lifting lug assembly 2 is fixedly connected to the traveling block assembly 1 and is provided with a receiving portion 21. When the hollow traveling block lifts the drill rod, at least a portion of the drill rod is received in the receiving portion 21.

[0024] It should be noted that, in this embodiment, the specific shapes of the first side plate 11 and the second side plate 12 are not limited. Overall, the first side plate 11 and the second side plate 12 are plate-shaped structures. Furthermore, to facilitate the installation of the first pulley 14 and the second pulley 15, both the first side plate 11 and the second side plate 12 can be configured as double-layered plate structures, thereby facilitating the installation of the first pulley 14 and the second pulley 15 between the double-layered plate structures. It should also be noted that, in this embodiment, the first side plate 11 and the second side plate 12 can be made completely identical.

[0025] In addition, in this embodiment, the traveling carriage assembly 1 and the lifting lug assembly 2 can be made using high-strength alloy steel plates, and both the traveling carriage assembly 1 and the lifting lug assembly 2 can be made by welding. In this way, the hollow traveling carriage provided in this embodiment can have low manufacturing cost, high strength and beautiful appearance.

[0026] For example, refer to Figures 1 to 3 In some embodiments of this application, the first side plate 11 and the second side plate 12 can be elliptical in shape, with the bottom being larger than the top. Of course, in other embodiments of this application, the first side plate 11 and the second side plate 12 can also be circular.

[0027] Reference Figure 2 and Figure 3 In this embodiment, the first direction refers to the relative direction between the first side plate 11 and the second side plate 12. For example, refer to... Figure 2 The first direction can be considered as the horizontal direction. Based on this, in the embodiments of this application, the lifting plate 13 can be made according to the shape of the gap between the first side plate 11 and the second side plate 12. For example, the main body shape of the lifting plate 13 can be made into a rectangle.

[0028] Based on this, in this embodiment, the first side plate 11 and the second side plate 12 can be welded together using the lifting plate 13. It should be noted that in this embodiment, the welding method between the first side plate 11, the second side plate 12, and the lifting plate 13 is not limited; appropriate welding processes can be selected based on the material and thickness of the first side plate 11, the second side plate 12, and the lifting plate 13. Furthermore, after welding the first side plate 11, the second side plate 12, and the lifting plate 13, a suitable method can be selected for non-destructive testing.

[0029] For example, in the embodiments of this application, a pulley shaft 16 can be provided on the first side plate 11 or the second side plate 12 to install the first pulley 14 or the second pulley 15. Furthermore, a bearing 17 can be installed between the pulley shaft 16 and the first pulley 14 or the second pulley 15 to reduce wear between the first pulley 14 or the second pulley 15 and the pulley shaft 16. For example, a double-row tapered bearing can be installed.

[0030] Based on this, in this embodiment, the lifting lug assembly 2 can be fixedly connected to the traveling trolley assembly 1 by welding or bolting. This allows the traveling trolley assembly 1 and the lifting lug assembly 2 to be configured as a single unit, eliminating the need for a large hook compared to the separate configurations of the traveling trolley assembly 1 and the lifting lug assembly 2 in related technologies. Furthermore, in this embodiment, holes or other structures can be provided on the lifting lug assembly 2 to form a receiving portion 21. For example, the shape of the receiving portion 21 can be designed according to the shape of the drill rod being lifted by the hollow traveling trolley in this embodiment; for example, refer to... Figure 2 and Figure 3 In this embodiment, the main structure of the receiving part 21 can be set as a circular hole, which is equivalent to forming a hollow structure in the lifting lug assembly 2. In this way, when the drill rod is lifted using the hollow traveling trolley provided in this embodiment, the receiving part 21 can be used to allow the drill rod to pass through, thereby accommodating the drill rod or a part of the drill rod.

[0031] The hollow traveling block provided in this application embodiment, by combining the traveling block assembly 1 and the lifting lug assembly 2, eliminates the need for a large hook, making the hollow traveling block structure simple, low-cost, and easy to operate. Furthermore, by forming a receiving portion 21 on the lifting lug assembly 2 to accommodate at least a portion of the drill pipe, allowing the drill pipe to pass through, the derrick height can be reduced, saving on drilling equipment costs.

[0032] Based on this, in the hollow trolley provided in the embodiments of this application, the lug assembly 2 includes a receiving member 22, which is provided with a through hole 221 extending along a second direction, and the through hole 221 forms a receiving portion 21. Wherein, the second direction is perpendicular to the first direction.

[0033] It should be noted that, in this embodiment of the application, the specific structural form of the receiving member 22 is not limited. The receiving member 22 can be set as a cylinder, the cylinder can be set as a cubic cylinder, or it can be set as a cylindrical cylinder structure.

[0034] Furthermore, in this embodiment of the application, by providing a through hole 221 extending along the second direction in the receiving member 22, the receiving portion 21 can be formed using the through hole 221.

[0035] It should be noted that in this embodiment, the second direction is perpendicular to the first direction. For example, refer to... Figure 2 ,by Figure 2 Taking the relative positions in the diagram as an example, the first direction refers to the horizontal direction, and the second direction refers to the vertical direction.

[0036] In this embodiment, the specific shape of the through hole 221 is not limited. Specifically, the shape of the through hole 221 can be set according to the shape of the drill rod. For example, refer to... Figure 3 The main body shape of the through hole 221 can be set to a circle.

[0037] Thus, in the hollow traveling carriage provided in this application embodiment, by providing a through hole 221 on the receiving member 22, it is equivalent to setting the receiving member 22 as a hollow structure, so that the drill rod can pass through the receiving member 22, which can simplify the structure of the hollow traveling carriage provided in this application embodiment.

[0038] Based on this, refer to Figure 3 In the hollow trolley provided in this application embodiment, the cross-sectional shape of the through hole 221 along the first direction is arc-shaped, the arc corresponding to the through hole 221 is greater than 180°, and along the radial direction of the through hole 221, the through hole 221 forms an opening groove 222 on one side of the receiving member 22.

[0039] It should be noted that, in this embodiment, the cross-section of the through hole 221 along the first direction refers to the plane in which the cross-section is located being parallel to the first direction. Furthermore, by forming an opening groove 222 in the receiving member 22, the through hole 221 can be made into an unclosed hole. By setting the size of the opening groove 222, the arc corresponding to the through hole 221 can be greater than 180°.

[0040] Thus, in the hollow traveling carriage provided in this application embodiment, the drill rod can be inserted into the receiving hole by using the opening slot 222, which facilitates the lifting of the drill rod.

[0041] Additionally, refer to Figure 2 In some embodiments of this application, the end of the receiving member 22 near the traveling carriage assembly 1 extends between the first side plate 11 and the second side plate 12, and the dimension of the end of the receiving member 22 away from the hanging lug assembly 2 in the first direction is greater than the gap between the first side plate 11 and the second side plate 12.

[0042] Specifically, refer to Figure 2 In this embodiment, the size of the receiving member 22 can be adapted according to the gap between the first side plate 11 and the second side plate 12. For example, see... Figure 2 A variable-diameter section can be provided at the end of the receiving member 22 near the traveling carriage assembly 1, so that the size of the end of the receiving member 22 near the traveling carriage assembly 1 is smaller, just the same as the gap between the first side plate 11 and the second side plate 12, thereby allowing the end of the receiving member 22 near the traveling carriage assembly 1 to extend between the first side plate 11 and the second side plate 12. Furthermore, by setting the size of the end of the receiving member 22 away from the traveling carriage assembly 1 to be larger, the size of the end of the receiving member 22 away from the lifting lug assembly 2 along the first direction can be greater than the gap between the first side plate 11 and the second side plate 12.

[0043] With the above-mentioned configuration, the hollow trolley provided in this application embodiment can achieve greater stress resistance and greater safety for the housing 22.

[0044] Based on this, in the hollow trolley provided in the embodiments of this application, a lifting hole 131 is provided at the end of the lifting plate 13 away from the lifting lug assembly 2.

[0045] Specifically, refer to Figure 2 In this embodiment, a circular hole can be provided at the end of the lifting plate 13 away from the lifting lug assembly 2 to form a lifting hole 131. This allows for convenient installation of the hollow traveling carriage in this embodiment using lifting tools such as shackles, thereby facilitating the installation of the hollow traveling carriage provided in this embodiment.

[0046] Based on this, in the hollow trolley provided in the embodiments of this application, the end of the lifting plate 13 away from the trolley assembly 1 is a left-right symmetrical angle, and the lifting hole 131 is set on the line of symmetry.

[0047] For example, refer to Figure 2 ,by Figure 2 Taking the relative position in the middle as an example, the upper part of the lifting plate 13 is angular. By adapting the position of the lifting hole 131, the lifting hole 131 can be located on the line of symmetry.

[0048] Thus, in the hollow trolley provided in this application embodiment, by setting the lifting plate 13 into a symmetrical angle and setting the lifting hole 131 on the line of symmetry, it is convenient to set the lifting hole 131 and to conveniently use the lifting hole 131 to lift or install the hollow trolley.

[0049] Additionally, refer to Figure 1 and Figure 2 In some embodiments of this application, the traveling carriage assembly 1 is fixedly connected to the lug assembly 2 by fasteners 3.

[0050] It should be noted that, in the embodiments of this application, the specific form of the fastener 3 is not limited; for example, refer to... Figure 1 and Figure 2 Fastener 3 can be set as a bolt and nut.

[0051] In this way, by setting the traveling block assembly 1 to be fixedly connected to the lug assembly 2 by the fastener 3, it is possible to easily disassemble the traveling block assembly 1 and the lug assembly 2 to facilitate different pairings and adapt to different drill pipes.

[0052] Based on this, refer to Figure 1 In some embodiments of this application, the number of fasteners 3 is at least two, and the fasteners 3 are arranged in an array.

[0053] It should be noted that, in this embodiment, the number of fasteners 3 can be set to two or more. Furthermore, by adapting the relative positions between the fasteners 3, the fasteners 3 can be arranged in a specific configuration.

[0054] For example, refer to Figure 1 In some embodiments of this application, the number of fasteners 3 can be set to two, and the two fasteners 3 can be arranged horizontally.

[0055] By setting the number of fasteners 3 to at least two and arranging the fasteners 3 in a specific order, the stability of the connection between the traveling carriage assembly 1 and the lug assembly 2 can be enhanced.

[0056] Additionally, refer to Figure 3 In some embodiments of this application, the projection of the lifting plate 13 along the second direction is located on the side of the through hole 221 away from the opening slot 222.

[0057] Specifically, refer to Figure 3 ,by Figure 3 Taking the relative positions as an example, the projection of the lifting plate 13 along the second direction is located above the through hole 221, while the opening slot 222 is located below the through hole 221.

[0058] The above-mentioned arrangement allows for clearance between the lifting plate 13 and the opening slot 222, facilitating the lifting of the drill rod.

[0059] In addition, in some embodiments of this application, a lug 4 is provided on the surface of the receiving member 22.

[0060] For example, in some embodiments of this application, the lug 4 includes a lug body 41, a lug protector 42, and a bolt 43.

[0061] With the above setup, the drill rod can be easily lifted using the lifting lug 4.

[0062] It should be noted that, in the description of this invention, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," 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 limitations on this invention.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A hollow traveling block for lifting drill rods, characterized in that, include: The trolley assembly includes a first side plate and a second side plate, which are arranged opposite to each other along a first direction. A lifting plate is provided between the first side plate and the second side plate, and the first side plate and the second side plate are welded together by the lifting plate. The first side plate is provided with a first pulley, and the second side plate is provided with a second pulley. A lifting lug assembly is fixedly connected to the traveling trolley assembly. The lifting lug assembly is provided with a receiving portion, in which at least a portion of the drill rod is received when the hollow traveling trolley lifts the drill rod. The lifting lug assembly includes a receiving member with a through hole extending along a second direction, the through hole forming the receiving portion. The second direction is perpendicular to the first direction. The cross-sectional shape of the through hole along the first direction is arc-shaped, and the arc corresponding to the through hole is greater than 180°. Along the radial direction of the through hole, the through hole forms an opening groove on one side surface of the receiving member. The end of the receiving member near the traveling carriage assembly extends between the first side plate and the second side plate, and the dimension of the end of the receiving member away from the lug assembly along the first direction is greater than the gap between the first side plate and the second side plate.

2. The hollow tour bus according to claim 1, characterized in that, The lifting plate has a lifting hole at the end away from the lifting lug assembly.

3. The hollow tour bus according to claim 2, characterized in that, The end of the lifting plate away from the traveling carriage assembly is a symmetrical angle, and the lifting hole is located on the line of symmetry.

4. The hollow tour bus according to claim 1, characterized in that, The traveling carriage assembly is fixedly connected to the lug assembly by fasteners.

5. The hollow tour bus according to claim 4, characterized in that, The number of fasteners is at least two, and the fasteners are arranged horizontally.

6. The hollow tour bus according to claim 1, characterized in that, The projection of the lifting plate along the second direction is located on the side of the through hole away from the opening slot.

7. The hollow tour bus according to claim 1, characterized in that, The surface of the receiving component is provided with lifting lugs.

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