Special screw protector for geothermal well drill string
By introducing guide plates, pulleys, sliders, push rods and blocks into the geothermal well drilling string wire guard, the problem of easy damage to the wire cover during the drilling process is solved, and more efficient drilling and more Stable connections improve drilling safety and efficiency.
Patent Information
- Application Number
- CN202421259470.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-06-04
AI Technical Summary
During the drilling process of geothermal wells, the friction between the drill rod and the derrick slide causes the wire cover to be easily damaged, resulting in problems such as unreliable connection and de-wire breakage.
A special wire guard for geothermal well drilling string was designed. By installing guide plates and pulleys at the ends of the connecting columns, the friction of the wire guard sleeve is reduced, and the combined structure of sliders and springs is used to adapt to the shafts of different apertures, thereby improving drilling. Efficiency and enhance the fixing effect through the structure of the push rod and the block, reducing the difficulty of loosening and disassembly.
It effectively reduces the offset and shaking of the wire cover, reduces the friction between the drill rod and the wire cover, improves the drilling efficiency and connection stability, prevents desiring and breaking, and improves drilling safety and efficiency.
Smart Images
Figure CN222333723U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of geothermal wells, in particular to a special thread protector for a geothermal well drill column. Background Art
[0002] A thread protector literally means a device for protecting the wire. In the field of drilling, a thread protector is also called a "thread protector". It is a device connected to the drill string to protect the drill string from damage. It is usually made of high-strength materials, such as alloy steel or high-strength stainless steel, to ensure its durability and reliability.
[0003] The main function of the thread protector is to protect the drill string from damage during the drilling process. This helps to improve drilling efficiency, reduce drilling costs, and ensure the safety of drilling work. The thread protector is usually connected to the drill pipe, and a special connection method and material are used to ensure a tight connection and stability between the thread protector and the drill pipe.
[0004] In the current existing technology, in the process of drilling geothermal wells, drill rods and matching derrick sliding sleeves are usually used. The drilling process is hoisted through the derrick slide. In the process of drilling holes by sliding on the drill rod, the drill rod female head and the slide are in a friction state, which causes great friction on the drill rod thread and easily causes damage to the thread, thereby causing an unreliable connection between the drill rods, causing problems such as thread stripping and breakage. Utility Model Content
[0005] In order to make up for the deficiencies of the prior art and solve at least one of the problems raised in the background technology, a special thread protector for a geothermal well drill string is proposed.
[0006] The technical solution adopted by the utility model to solve its technical problems is: the utility model is a special thread protector for geothermal well drill strings, comprising a drill rod body; a thread protector is threadedly connected to the top of the drill rod body; a connecting column is installed on the top of the thread protector; a threaded hole is opened inside the connecting column; a mounting plate is provided at the end of the connecting column; the mounting plate is threadedly connected to the inside of the threaded hole through a threaded rod; the side end of the mounting plate is fixedly connected to a guide plate, and is symmetrically arranged.
[0007] Preferably, a slide groove is provided inside the guide plate; a slider is slidably connected inside the slide groove; a first spring is fixed to the side end of the slider, and the other end of the first spring is fixed to the inner wall of the slide groove; and a pulley is rotatably connected to the end of the slider.
[0008] Preferably, a slot is provided inside the connecting column; a block is slidably connected inside the threaded rod; a push rod is slidably connected inside the threaded rod; and a push handle is fixedly connected to the end of the push rod.
[0009] Preferably, a guide groove is provided inside the threaded rod; a guide plate is slidably connected to the inner wall of the guide groove, and the guide plate is fixedly connected to both sides of the block; a second spring is fixedly connected to the top of the guide plate, and the other end of the second spring is fixedly connected to the inner wall of the guide groove.
[0010] Preferably, a dust cover is fixedly connected to the end of the push handle and is in a cone shape; a magnet is fixedly connected to the bottom of the dust cover and the magnet is attached to the top of the threaded rod.
[0011] Preferably, a ball is rotatably connected to the end of the push rod and fits on the inner wall of the threaded rod.
[0012] The beneficial effects of the utility model are as follows:
[0013] 1. The special thread protector for geothermal well drill string described in the utility model, when sliding to the bottom through the well slide, is provided with a mounting plate at the end of the connecting column, so that the mounting plate drives the guide plate to slide in contact with the surface of the slide, thereby playing a guiding and protective role, reducing the problem of deviation and shaking of the thread protector during subsequent sliding, reducing the friction between the subsequent drill pipe body and the thread protector and the metal slide, and improving the protective effect of the drill pipe body and the thread protector.
[0014] 2. The utility model describes a special thread protector for geothermal well drill strings. When the guide plate is positioned and guided, the pulley is used to fit on the surface of the well and the metal slideway for rolling. Then, the pulley is squeezed through the aperture of the wellbore, so that the pulley squeezes the slider. The slider slides inside the slide groove to squeeze the first spring to generate elastic force, so that the pulley contracts to adapt to wells with different apertures, thereby improving the drilling efficiency of the drill rod body and the thread protector. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The utility model will be further described below in conjunction with the accompanying drawings.
[0016] Figure 1 It is a stereogram in the utility model;
[0017] Figure 2 It is a cross-sectional view of the utility model;
[0018] Figure 3 It is a structural schematic diagram of the threaded rod in the utility model;
[0019] Figure 4 yes Figure 3 Enlarged view of point A in the middle.
[0020] Legend:
[0021] 1. Drill rod body; 21. Thread guard; 22. Connecting column; 23. Mounting plate; 24. Guide plate; 25. Threaded hole; 26. Threaded rod; 31. Slide groove; 32. First spring; 33. Sliding block; 34. Pulley; 41. Slot; 42. Block; 43. Ball; 44. Push rod; 45. Push handle; 46. Guide groove; 47. Guide plate; 48. Second spring; 51. Dust cover; 52. Magnet. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] Specific examples are given below.
[0024] like Figures 1 to 4 As shown, a special thread protector for geothermal well drill string described in an embodiment of the utility model comprises a drill rod body 1; a thread protector 21 is threadedly connected to the top of the drill rod body 1; a connecting column 22 is installed on the top of the thread protector 21; a threaded hole 25 is opened inside the connecting column 22; a mounting plate 23 is provided at the end of the connecting column 22; the mounting plate 23 is threadedly connected to the inside of the threaded hole 25 through a threaded rod 26; a guide plate 24 is fixedly connected to the side end of the mounting plate 23, and is symmetrically arranged; working When the drill pipe body 1 is sleeved inside the wire guard 21 and the wire is protected, when it slides to the bottom through the well slide, a mounting plate 23 is installed at the end of the connecting column 22, so that the mounting plate 23 drives the guide plate 24 to slide against the surface of the slide to play a guiding and protective role, thereby reducing the problem of deviation and shaking of the wire guard 21 during subsequent sliding, reducing the friction between the subsequent drill pipe body 1 and the wire guard 21 and the metal slide, and improving the protective effect of the drill pipe body 1 and the wire guard 21.
[0025] Further, such as Figure 1-Figure 4As shown, a slide groove 31 is provided inside the guide plate 24; a slider 33 is slidably connected inside the slide groove 31; a first spring 32 is fixedly connected to the side end of the slider 33, and the other end of the first spring 32 is fixedly connected to the inner wall of the slide groove 31; a pulley 34 is rotatably connected to the end of the slider 33; during operation, when the guide plate 24 is positioned and guided, the pulley 34 is used to fit on the surface of the well and the metal slideway for rolling, and then the pulley 34 is squeezed through the aperture of the wellbore, so that the pulley 34 squeezes the slider 33, so that the slider 33 slides inside the slide groove 31 to squeeze the first spring 32 to generate elastic force, so that the pulley 34 contracts to adapt to wells with different apertures, thereby improving the drilling efficiency of the drill rod body 1 and the wire guard 21.
[0026] Further, such as Figure 1-Figure 4 As shown, a slot 41 is provided inside the connecting column 22; a block 42 is slidably connected inside the threaded rod 26; a push rod 44 is slidably connected inside the threaded rod 26; a push handle 45 is fixedly connected to the end of the push rod 44; during operation, when the threaded rod 26 is threadedly drilled into the threaded hole 25, the push handle 45 is pushed so that the push handle 45 pushes the push rod 44 to slide inside the threaded rod 26, so that the threaded rod 26 squeezes the end of the block 42, so that the block 42 is squeezed and slides to the side end, and is retracted to the inside of the slot 41 for clamping, so as to improve the fixing effect of the mounting plate 23 and reduce the problem of loosening and falling off during sliding.
[0027] Further, such as Figure 1-Figure 4 As shown, a guide groove 46 is provided inside the threaded rod 26; a guide plate 47 is slidably connected to the inner side wall of the guide groove 46, and the guide plate 47 is fixedly connected to the two sides of the block 42; a second spring 48 is fixedly connected to the top of the guide plate 47, and the other end of the second spring 48 is fixedly connected to the inner side wall of the guide groove 46; during operation, when the block 42 is extended to the inside of the slot 41, the block 42 drives the guide plate 47 to squeeze the second spring 48 to generate elastic force, and when the push rod 44 slides out from the inside of the threaded rod 26, the second spring 48 generates elastic force to push the guide plate 47 to slide to the side end, so that the guide plate 47 drives the block 42 to slide out from the inside of the slot 41, which is convenient for subsequent staff to disassemble the mounting plate 23.
[0028] Further, such as Figure 1-Figure 4As shown, the end of the push handle 45 is fixedly connected with a dust cover 51, and is in a cone shape; the bottom of the dust cover 51 is fixedly connected with a magnet 52, and the magnet 52 fits on the top of the threaded rod 26; when working, the dust cover 51 is installed at the end of the push handle 45 so that the dust cover 51 covers the surface of the threaded rod 26 to achieve a dust-proof effect and reduce the problem of dirt falling into the inside of the threaded rod 26 and causing sticking. The magnet 52 is installed at the bottom of the dust cover 51, and when the dust cover 51 slides to the bottom, the magnet 52 fits on the surface of the threaded rod 26 for adsorption, thereby fixing and limiting the dust cover 51.
[0029] Further, such as Figure 1-Figure 4 As shown, the end of the push rod 44 is rotatably connected to the ball 43 and fits on the inner wall of the threaded rod 26; when working, the ball 43 is installed on the end of the push rod 44 to achieve protection and wear resistance. When the push rod 44 pushes the ball 43 to slide, the ball 43 rolls on the inner wall of the threaded rod 26 to reduce the friction caused by sliding.
[0030] Working principle: During operation, when the drill pipe body 1 is sleeved inside the wire guard 21 and the wire is protected, when the well slides to the bottom, a mounting plate 23 is installed at the end of the connecting column 22, so that the mounting plate 23 drives the guide plate 24 to slide against the surface of the slide to play a guiding and protective role, reducing the deviation and shaking of the wire guard 21 during subsequent sliding, reducing the friction between the subsequent drill pipe body 1 and the wire guard 21 and the metal slideway, and improving the protective effect of the drill pipe body 1 and the wire guard 21; when the guide plate 24 is positioned and guided, it is fitted through the pulley 34 The pulley 34 is squeezed by the hole diameter of the wellbore 31, so that the pulley 34 squeezes the slider 33, so that the slider 33 slides inside the slide groove 31 and squeezes the first spring 32 to generate elastic force, so that the pulley 34 contracts to adapt to wells with different hole diameters, thereby improving the drilling efficiency of the drill rod body 1 and the thread protector 21; when the threaded rod 26 is threadedly drilled into the threaded hole 25, the push handle 45 is pushed so that the push handle 45 pushes the push rod 44 to slide into the inside of the threaded rod 26, so that the threaded rod 26 squeezes the end of the block 42, so that the block 42 is affected The clamping block 42 is pressed and slid toward the side end, and is extended and connected to the inside of the card slot 41 to improve the fixing effect of the mounting plate 23 and reduce the problem of loosening and falling when sliding; when the clamping block 42 is extended and slid into the inside of the card slot 41, the clamping block 42 drives the guide plate 47 to squeeze the second spring 48 to generate elastic force, and when the push rod 44 slides out from the inside of the threaded rod 26, the second spring 48 generates elastic force to push the guide plate 47 to slide toward the side end, so that the guide plate 47 drives the clamping block 42 to slide out from the inside of the card slot 41, which is convenient for subsequent staff to disassemble the mounting plate 23; by installing a dust cover 51 at the end of the push handle 45, The dust cover 51 covers the surface of the threaded rod 26 to prevent dust and reduce the problem of dirt falling into the inside of the threaded rod 26 and causing sticking. A magnet 52 is installed at the bottom of the dust cover 51. When the dust cover 51 slides to the bottom, the magnet 52 is attached to the surface of the threaded rod 26 for adsorption, thereby fixing and limiting the dust cover 51. A ball 43 is installed at the end of the push rod 44 to provide protection and wear resistance. When the push rod 44 pushes the ball 43 to slide, the ball 43 rolls on the inner wall of the threaded rod 26 to reduce the friction caused by sliding.
[0031] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A thread protector for a geothermal well drill string, comprising a drill rod body (1); a thread protector (21) is threadedly connected to the top of the drill rod body (1); a connecting column (22) is installed on the top of the thread protector (21); a threaded hole (25) is formed inside the connecting column (22); the characteristics are: A mounting plate (23) is provided at the end of the connecting column (22); the mounting plate (23) is threadedly connected to the inside of the threaded hole (25) via a threaded rod (26); and a guide plate (24) is fixedly connected to the side end of the mounting plate (23) and is symmetrically arranged.
2. A geothermal well drill string dedicated thread protector according to claim 1, characterized in that: A slide groove (31) is provided inside the guide plate (24); a slider (33) is slidably connected inside the slide groove (31); a first spring (32) is fixedly connected to a side end of the slider (33), and the other end of the first spring (32) is fixedly connected to an inner wall of the slide groove (31); and a pulley (34) is rotatably connected to an end of the slider (33).
3. The special thread protector for geothermal well drill string according to claim 1, characterized in that: A clamping groove (41) is provided inside the connection column (22); a clamping block (42) is slidably connected inside the threaded rod (26); a push rod (44) is slidably connected inside the threaded rod (26); and a push handle (45) is fixedly connected to the end of the push rod (44).
4. A geothermal well drill string dedicated thread protector according to claim 3, characterized in that: A guide groove (46) is provided inside the threaded rod (26); a guide plate (47) is slidably connected to the inner side wall of the guide groove (46), and the guide plate (47) is fixedly connected to both sides of the clamping block (42); a second spring (48) is fixedly connected to the top of the guide plate (47), and the other end of the second spring (48) is fixedly connected to the inner side wall of the guide groove (46).
5. The special thread protector for geothermal well drill string according to claim 3, characterized in that: The end of the push handle (45) is fixedly connected to a dust cover (51) which is in a conical shape.
6. A geothermal well drill string dedicated thread protector according to claim 5, characterized in that: A magnet (52) is fixedly connected to the bottom of the dust cover (51), and the magnet (52) is attached to the top of the threaded rod (26).
7. The special thread protector for geothermal well drill string according to claim 3, characterized in that: The end of the push rod (44) is rotatably connected to a ball (43) and fits against the inner wall of the threaded rod (26).