Drilling casing centralizing device for geological resource exploration

Abstract

The utility model relates to the technical field of geological resource exploration, and discloses a geological resource exploration well drilling casing centralizing device which comprises a connecting ring, a spring piece is arranged on the outer wall of the connecting ring, a connecting assembly is arranged in the connecting ring, and a connecting piece is fixedly connected to the outer wall of the connecting ring. A fixing assembly is arranged in the connecting piece, the connecting assembly comprises two connecting blocks, the outer walls of the two connecting blocks are fixedly connected to the two ends of the spring piece, the outer walls of the connecting blocks are slidably connected to the interior of the connecting circular ring, and clamping grooves are formed in the connecting blocks. According to the utility model, the clamping column is driven by the connecting rod, and the clamping column is matched with the clamping groove and the sliding-out groove, so that the connecting block slides in the connecting circular ring, and therefore, the spring piece can be conveniently disassembled, maintained and replaced, and the problem that the spring piece can not be conveniently disassembled due to the fact that various tools are required to be matched for use when the spring piece is disassembled in the prior art is solved; and the convenience of disassembling and assembling the spring piece is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to geological resource exploration technical field especially relates to a geological resource exploration drilling casing centralizing device. BACKGROUND

[0002] In the geological resource exploration work, drilling operation is the key link to obtain underground information. The drilling casing centralizing device plays an indispensable role in ensuring the smooth progress of the drilling process and improving the drilling quality. It can ensure that the casing maintains the correct position in the wellbore, avoids excessive friction between the casing and the well wall, effectively reduces the wear of the casing, and prolongs its service life. At the same time, good centralizing effect helps to improve the uniformity of cement slurry filling between the casing and the well wall, improve the cementing quality, and lay a solid foundation for subsequent resource exploitation and other work. With the advancement of geological exploration work to more complex strata and deeper wells, higher requirements are put forward for the performance and maintenance convenience of the drilling casing centralizing device.

[0003] At present, in the common geological resource exploration drilling casing centralizing device, the spring sheet as an important component plays a key role in realizing the centralizing function. Its main mechanical structure is to fix the spring sheet on the centralizing device main body through a relatively traditional connection method. Generally, bolts, nuts and other connecting pieces are used to tightly fix the spring sheet in the corresponding position. The technical principle is to use the fastening effect of these connecting pieces to make the spring sheet stably adhere to the centralizing device, so that the spring sheet can adapt to the irregular shape of the well wall through elastic deformation in the drilling process, and realize the centralizing of the casing. However, this traditional connection method gradually exposes some drawbacks in the long-term actual use process.

[0004] However, the existing technology has great problems in disassembling the spring sheet. Because of the use of bolts, nuts and other connecting pieces fixed by various connecting pieces, when the spring sheet needs to be maintained and replaced, the operator must use various tools such as wrenches and screwdrivers. Moreover, after being eroded by the complex environment underground for a long time, these connecting pieces are prone to rust, corrosion and other situations, which further increases the difficulty of disassembly. This complicated disassembly process not only consumes a lot of time and manpower, but also seriously affects the operation efficiency, which cannot meet the needs of rapid and efficient geological exploration work. Therefore, a geological resource exploration drilling casing centralizing device is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a geological resource exploration drilling casing centralizing device, which aims to improve the problem that the existing technology needs to use various tools to disassemble and cannot be disassembled conveniently.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a geological resource exploration drilling casing centralizer, including connecting ring, the outer wall of connecting ring is provided with spring leaf, the inside of connecting ring is provided with connecting assembly, the outer wall of connecting ring is fixedly connected with connecting piece, the inside of connecting piece is provided with fixed component,

[0008] Connecting assembly includes two connecting blocks, two connecting blocks are fixedly connected on both ends of spring leaf, the outer wall of connecting block is connected in the inside of connecting ring, the inside of connecting block is equipped with the clamping groove, the inside of connecting block is equipped with the sliding slot, the inside of connecting ring is equipped with the rotation groove, the outer wall of connecting rod is rotatably connected in the inside of rotation groove, the bottom of connecting rod is fixedly connected with the clamping column, the outer wall of clamping column is slidably connected in the inside of clamping groove,

[0009] As further description of the above technical solution:

[0010] The fixed component includes a connecting shell, the outer wall of the connecting shell is slidably connected in the connecting piece;

[0011] As further description of the above technical solution:

[0012] The outer wall of the connecting shell is fixedly connected with a limiting circular ring, and the limiting circular ring is arranged at the top of the connecting piece;

[0013] As further description of the above technical solution:

[0014] The inside of the connecting shell is provided with a limiting groove, and the inside of the connecting shell is slidably connected with a button;

[0015] As further description of the above technical solution:

[0016] The outer wall of the button is fixedly connected with a limiting disc, and the outer wall of the limiting disc is slidably connected in the inside of the limiting groove;

[0017] As further description of the above technical solution:

[0018] The bottom of the limiting disc is fixedly connected with a connecting column, and the bottom of the connecting column is fixedly connected with a tapered block;

[0019] As further description of the above technical solution:

[0020] The outer wall of the connecting column is provided with a compression spring, the top of the compression spring is fixedly connected with the bottom of the limiting disc, and the bottom of the compression spring is fixedly connected with the inner wall of the limiting groove;

[0021] As further description of the above technical solution:

[0022] The connecting shell inner wall is provided with a sliding groove, and the two sides of the conical block are provided with sliding balls, and the sliding ball outer wall is slidingly connected in the sliding groove.

[0023] The utility model has the advantages of the following:

[0024] 1、The utility model discloses a spring piece convenient to disassemble and assemble, and the spring piece is convenient to maintain and replace, solves the problem that a plurality of tools need to be used to disassemble and assemble the spring piece inconveniently, and improves the convenience of disassembling and assembling the spring piece.

[0025] 2、The utility model discloses a spring piece convenient to disassemble and assemble, and the spring piece is convenient to maintain and replace, solves the problem that a plurality of tools need to be used to disassemble and assemble the spring piece inconveniently, and improves the convenience of disassembling and assembling the spring piece. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A three-dimensional schematic view of a geological resource exploration drilling casing centralizing device is provided for the utility model;

[0027] Figure 2 A three-dimensional schematic view of a geological resource exploration drilling casing centralizing device is provided for the utility model;

[0028] Figure 3 A three-dimensional schematic view of a geological resource exploration drilling casing centralizing device is provided for the utility model;

[0029] Figure 4 A three-dimensional schematic view of a geological resource exploration drilling casing centralizing device is provided for the utility model;

[0030] LEGEND:

[0031] 1, connecting ring;2, spring piece;3, connecting piece;4, connecting block;5, sliding slot;6, connecting rod;7, rotating groove;8, clamping column;9, clamping groove;10, limiting ring;11, button;12, connecting shell;13, limiting disc;14, compression spring;15, connecting column;16, limiting groove;17, sliding ball;18, conical block;19, sliding groove. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0033] With reference to Figure 1 And Figure 2 An embodiment provided by the utility model: a geological resource exploration drilling casing centralizing device, including connecting ring 1, connecting ring 1 is used as the core support component of the whole device, is made of high-quality high-alloy stainless steel material. This high-alloy stainless steel has excellent strength and corrosion resistance, and the crystal structure in its interior is treated specially, so that it can still maintain the integrity and stability of the structure when bearing huge downhole pressure and the erosion of complex chemical environment. The outer wall of connecting ring 1 is provided with spring sheet 2, which is made of high-grade spring steel. This spring steel has excellent elastic recovery capacity and fatigue resistance after multiple tempering treatments, and can always provide stable and reliable centralizing force for the casing during frequent stretching and deformation. The shape of spring sheet 2 is designed as a unique arc, and the arc is optimized to better fit the curves of the casing and the well wall, providing all-round support for the casing. Moreover, the surface of spring sheet 2 is coated with a special anti-corrosion and wear-resistant coating to resist the wear and corrosion of downhole mud and rock particles. Connecting ring 1 is internally provided with a connecting assembly, and connecting ring 1 is externally fixedly connected with connecting piece 3, which is internally provided with a fixing assembly.

[0034] The connecting assembly includes two connecting blocks 4 made of high-strength aluminum alloy, and the surface of the connecting blocks 4 is treated by anodic oxidation to form a dense oxide film, which not only enhances the oxidation resistance, but also improves the hardness and wear resistance. The outer walls of the two connecting blocks 4 are fixedly connected at both ends of spring sheet 2, and the outer walls of the connecting blocks 4 are slidably connected in the interior of connecting ring 1. The interior of connecting block 4 is provided with clamping groove 9 and sliding-out groove 5, and the interior of connecting ring 1 is provided with rotating groove 7 and connecting rod 6. The outer wall of connecting rod 6 is rotatably connected in the interior of rotating groove 7, and the bottom of connecting rod 6 is fixedly connected with clamping column 8 made of hard alloy material, which has extremely high hardness and wear resistance. The outer wall of clamping column 8 is finely ground and polished to be perfectly slidably connected in the interior of clamping groove 9.

[0035] Specifically, in the geological resources exploration drilling operation, the drilling casing centralizing device is in the complex downhole environment for a long time. When the use time is too long or the single spring sheet 2 is damaged, it needs to be replaced or maintained. At this time, we can use the unique structure design of the device to realize convenient operation. First, rotate the connecting rod 6 inside the rotating groove 7, and the clamping column 8 will rotate synchronously inside the clamping groove 9. When the clamping column 8 rotates to the position opposite to the sliding-out groove 5, the connecting block 4 can be smoothly slid out of the connecting ring 1 inside, so as to replace or maintain the damaged spring sheet 2. After completing the relevant operation, put the connecting block 4 back into the connecting ring 1, rotate the connecting rod 6 again, make the clamping column 8 rotate back into the clamping groove 9, and then complete the fixation of the connecting block 4, so that the spring sheet 2 can continue to play a stable role.

[0036] With reference to Figure 1 , Figure 3 and Figure 4 , the fixing assembly comprises a connecting shell 12, which is an important protection and bearing structure of the whole fixing assembly, is made of high-quality high-strength engineering plastic, such a material not only has light weight, but also has good wear resistance and corrosion resistance, and can be used for a long time in the harsh downhole environment, the outer wall of the connecting shell 12 is slidably connected inside the connecting piece 3, the outer wall of the connecting shell 12 is fixedly connected with a limiting ring 10, the limiting ring 10 is arranged at the top of the connecting piece 3, a limiting groove 16 is formed in the inside of the connecting shell 12, a button 11 is slidably connected inside the connecting shell 12, the button 11 is made of high-strength nylon material, such a material not only has good mechanical properties, but also has comfortable hand feeling, and is convenient for operators to operate, the outer wall of the button 11 is fixedly connected with a limiting disc 13, the outer wall of the limiting disc 13 is slidably connected inside the limiting groove 16, the bottom of the limiting disc 13 is fixedly connected with a connecting column 15, the connecting column 15 is made of high-strength quenched and tempered steel, which can bear a large axial force, the bottom of the connecting column 15 is fixedly connected with a tapered block 18, the outer wall of the connecting column 15 is sleeved with a compression spring 14, the top of the compression spring 14 is fixedly connected with the bottom of the limiting disc 13, the bottom of the compression spring 14 is fixedly connected with the inner wall of the limiting groove 16, a sliding groove 19 is formed in the inner wall of the connecting shell 12, the tapered block 18 is provided with sliding balls 17 on both sides, the sliding balls 17 are made of wear-resistant ceramic material, have the advantages of high hardness and small friction coefficient, and are slidably connected with the outer wall inside the sliding groove 19 very smoothly, which ensures the flexibility and stability of the device operation, and the outer wall of the sliding ball 17 is slidably connected inside the sliding groove 19;

[0037] Specifically, in the installation work of the geological resource exploration drilling casing centralizer, the primary step is to accurately align the two connecting rings 1. This step is crucial, and it lays the foundation for the subsequent connection operation. After alignment, press the button 11. At this time, the button 11 will drive the limiting disc 13 to move downward. In this process, the limiting disc 13 will compress the compression spring 14, and at the same time, the connecting column 15 will also move downward together with the limiting disc 13. The downward movement of the connecting column 15 further drives the conical block 18 to move downward, which enables the sliding ball 17 to freely slide inside the sliding groove 19. When the sliding ball 17 can freely slide, the connecting shell 12 can be smoothly placed inside the connecting piece 3. Place the connecting shell 12 until the limiting ring 10 contacts the top of the connecting piece 3. At this time, release the button 11, and the compression spring 14 will quickly rebound, driving the conical block 18 back to its original position. In this process, the resetting of the conical block 18 pushes the sliding ball 17 to be clamped at the bottom of the bottom connecting piece 3, thereby achieving firm fixation of the connecting piece 3 and ensuring the stability of the entire device connection, providing reliable protection for subsequent drilling operations.

[0038] Working principle: when the time is too long or the individual spring sheet 2 is damaged, the connecting rod 6 can be rotated inside the rotating groove 7, and then the clamping column 8 is driven by the rotating groove 7 to rotate inside the clamping groove 9. The clamping column 8 is aligned with the sliding-out groove 5, and the connecting block 4 can be slid out of the connecting ring 1 for replacement or maintenance. Then, the connecting block 4 is placed back into the connecting ring 1, and the connecting rod 6 is rotated to make the clamping column 8 rotate back into the clamping groove 9 for fixation.

[0039] In addition, during installation, align the two connecting rings 1, press the button 11, and drive the limiting disc 13 to move downward to compress the compression spring 14 and drive the connecting column 15 to move downward, thereby driving the conical block 18 to move downward, enabling the sliding ball 17 to slide inside the sliding groove 19. Then, the connecting shell 12 can be placed inside the connecting piece 3. When the limiting ring 10 contacts the top of the connecting piece 3, release the button 11. The compression spring 14 rebounds to drive the conical block 18 back to a distance, thereby pushing the sliding ball 17 to be clamped at the bottom of the bottom connecting piece 3, thereby fixing the connecting piece 3 and maintaining the stability of the connection.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A casing straightening device for geological resource exploration drilling, comprising a connecting ring (1), characterized in that: The outer wall of the connecting ring (1) is provided with a spring sheet (2), the inside of the connecting ring (1) is provided with a connecting component, the outer wall of the connecting ring (1) is fixedly connected with a connector (3), and the inside of the connector (3) is provided with a fixing component; The connecting assembly includes two connecting blocks (4), the outer walls of the two connecting blocks (4) are fixedly connected to both ends of the spring sheet (2), the outer walls of the connecting blocks (4) are slidably connected to the inside of the connecting ring (1), a slot (9) is provided inside the connecting blocks (4), a sliding groove (5) is provided inside the connecting blocks (4), a rotating groove (7) is provided inside the connecting ring (1), a connecting rod (6) is provided inside the connecting ring (1), the outer wall of the connecting rod (6) is rotatably connected to the inside of the rotating groove (7), a locking post (8) is fixedly connected to the bottom of the connecting rod (6), and the outer wall of the locking post (8) is slidably connected to the inside of the slot (9).

2. The casing straightening device for geological resource exploration drilling according to claim 1, characterized in that: The fixing component includes a connecting housing (12), the outer wall of which is slidably connected to the inside of the connector (3).

3. The casing straightening device for geological resource exploration drilling according to claim 2, characterized in that: The outer wall of the connecting shell (12) is fixedly connected to a limiting ring (10), which is located on the top of the connector (3).

4. A casing straightening device for geological resource exploration drilling according to claim 3, characterized in that: The connecting shell (12) has a limiting groove (16) inside, and a button (11) is slidably connected inside the connecting shell (12).

5. A casing straightening device for geological resource exploration drilling according to claim 4, characterized in that: A limiting disc (13) is fixedly connected to the outer wall of the button (11), and the outer wall of the limiting disc (13) is slidably connected inside the limiting groove (16).

6. A casing straightening device for geological resource exploration drilling according to claim 5, characterized in that: The bottom of the limiting disk (13) is fixedly connected to a connecting post (15), and the bottom of the connecting post (15) is fixedly connected to a conical block (18).

7. A casing straightening device for geological resource exploration drilling according to claim 6, characterized in that: A compression spring (14) is fitted on the outer wall of the connecting column (15). The top of the compression spring (14) is fixedly connected to the bottom of the limiting disc (13), and the bottom of the compression spring (14) is fixedly connected to the inner wall of the limiting groove (16).

8. A casing straightening device for geological resource exploration drilling according to claim 7, characterized in that: The inner wall of the connecting shell (12) is provided with a sliding groove (19), and both sides of the conical block (18) are provided with a slider (17), and the outer wall of the slider (17) is slidably connected to the inside of the sliding groove (19).

Images