Drilling tool cleaning device

Abstract

The present invention provides a drilling tool cleaning device, which includes a fixed ring, a scraper rope and a scraper blade. The fixed ring is installed on a drilling platform and is arranged around the core-filling hole of the drilling platform; the scraper rope is connected to the fixed ring, and part of the scraper rope is wound around the outer wall of the drilling tool to clean the drilling fluid; the scraper blade is arranged on the inner side of the fixed ring, and the side of the scraper blade facing the core-filling hole contacts the outer wall of the drilling tool to clean the drilling fluid. In the drilling tool cleaning device provided by the present invention, the fixed ring is respectively connected to the scraper rope and the scraper blade to fix the scraper rope and the scraper blade, and the scraper rope and the scraper blade are respectively in contact with the outer wall of the drilling tool to clean the drilling fluid on the outer wall of the drilling tool by scraping the outer wall of the drilling tool. The drilling tool cleaning device provided by the present invention has a simple structure and does not require manpower. The combination of the scraper rope and the scraper blade is convenient and quick during the cleaning process, thereby improving the cleaning effect and cleaning efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of oil drilling, in particular to a drilling tool cleaning device. Background Art

[0002] Drilling tools are one of the important tools in the process of oil drilling operations. Drilling tools are usually composed of active drill pipes, drill pipes, core tubes, bottom reamer and drill bits. The function of drilling tools is to transmit pressure, rotational torque and transport drilling fluid during the drilling process.

[0003] During oil drilling, the drill tool usually needs to be pulled out of the well and lowered into the well. However, since drilling fluid such as mud is attached to the drill tool, if the drilling fluid attached to the drill tool cannot be cleaned in time during the drilling, it will fall on the drilling floor. When a large amount of drilling fluid accumulates on the drilling floor, it will not only affect the subsequent drilling process, but also cause safety hazards under the influence of other factors such as ambient temperature.

[0004] In the prior art, the method of cleaning drilling fluid is usually a combination of manual cleaning and laying sawdust on the drill table for adsorption and cleaning. Manual cleaning is that workers clean the drilling fluid on the surface of the drill tool by hand or rope during the drilling process. However, due to the high drilling speed, it is difficult to clean the drilling fluid on the surface of the drill tool by manual cleaning; the method of laying sawdust for adsorption requires secondary cleaning of the sawdust, which is not only cumbersome but also has poor cleaning effect. Summary of the invention

[0005] The embodiment of the present invention provides a drilling tool cleaning device, which is used to solve the problems of low drilling tool cleaning efficiency and poor cleaning effect in the prior art.

[0006] In order to achieve the above-mentioned purpose, an embodiment of the present invention provides a drill cleaning device, comprising a fixed ring, a scraper rope and a scraper blade, wherein the fixed ring is installed on a drilling platform and is arranged around a core-filling hole of the drilling platform; the scraper rope is connected to the fixed ring, and a part of the scraper rope is wound around the outer wall of the drilling tool to clean the drilling fluid; the scraper blade is arranged on the inner side of the fixed ring, and the scraper blade contacts the outer wall of the drilling tool on the side facing the core-filling hole to clean the drilling fluid.

[0007] Compared with the prior art, the drilling tool cleaning device provided by the embodiment of the present invention has the following advantages:

[0008] The drilling tool cleaning device provided by the embodiment of the present invention replaces the previous method of workers manually cleaning the outer wall of the drilling tool by setting a fixed ring, a scraper rope and a scraper blade, wherein the fixed ring is respectively connected to the scraper rope and the scraper blade to fix the scraper rope and the scraper blade, and the scraper rope and the scraper blade are respectively in contact with the outer wall of the drilling tool to clean the drilling fluid on the outer wall of the drilling tool by scraping the outer wall of the drilling tool. The drilling tool cleaning device provided by this embodiment has a simple structure and does not require manpower, and the combination of the scraper rope and the scraper blade is convenient and quick during the cleaning process, thereby improving the cleaning effect and cleaning efficiency.

[0009] In the drilling tool cleaning device as described above, the scraper blade is provided with a plurality of reflux holes for the drilling fluid to pass through.

[0010] In the drilling tool cleaning device as described above, the fixing ring is an annular fixing ring, and the top surface of the fixing ring is higher than the top surface of the scraper blade in the vertical direction.

[0011] In the drilling tool cleaning device as described above, the scraper blade is an annular scraper blade, and the inner diameter of the annular scraper blade is less than or equal to the diameter of the drilling tool.

[0012] In the drilling tool cleaning device as described above, the scraper blade is a fan-shaped scraper blade, and the inner diameter of the fan-shaped scraper blade is less than or equal to the diameter of the drilling tool.

[0013] As described above, in the drilling tool cleaning device, there are a plurality of fan-shaped scraping blades, and the plurality of fan-shaped scraping blades form a circular ring.

[0014] In the drilling tool cleaning device as described above, the scraper blade is an elastic rubber scraper blade.

[0015] In the drilling tool cleaning device as described above, the scraper blade is connected to the fixing ring via bolts.

[0016] In the drilling tool cleaning device as described above, the scraper rope is an elastic scraper rope.

[0017] In the drilling tool cleaning device as described above, the number of the scraping ropes is three, both ends of each scraping rope are respectively connected to the fixing ring, and the middle part of each scraping rope is in contact with the outer wall of the drilling tool.

[0018] In addition to the technical problems solved by the embodiments of the present invention described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the drill cleaning device provided by the embodiments of the present invention, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments of the present invention or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only part of the embodiments of the present invention. These drawings and text descriptions are not intended to limit the scope of the concept of the present disclosure in any way, but to illustrate the concepts of the present disclosure to those skilled in the art by referring to specific embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 The structure of the drilling tool cleaning device in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0021] Figure 2 The structure of the drilling tool cleaning device in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0022] Figure 3 The structure of the drilling tool cleaning device in the embodiment of the present invention is shown in FIG. Figure 3 ;

[0023] Figure 4 The structure of the drilling tool cleaning device in the embodiment of the present invention is shown in FIG. Figure 4 ;

[0024] Figure 5 for Figure 4 Partial cross-sectional view of the drilling tool cleaning device.

[0025] Description of reference numerals:

[0026] 100-fixed circle;

[0027] 200-mud scraping rope;

[0028] 300-scraper blade;

[0029] 310- reflux hole;

[0030] 400-filling hole;

[0031] 500-bolts;

[0032] 600-Drilling tools. DETAILED DESCRIPTION

[0033] In order to solve the problems of low drilling tool cleaning efficiency and poor cleaning effect in the prior art, an embodiment of the present invention provides a drilling tool cleaning device, which includes a fixed ring, a scraper rope and a scraper blade, wherein the fixed ring is respectively connected to the scraper rope and the scraper blade to fix the scraper rope and the scraper blade, and the scraper rope and the scraper blade are respectively in close contact with the outer wall of the drilling tool to clean the drilling fluid on the outer wall of the drilling tool by scraping the outer wall of the drilling tool. The drilling tool cleaning device provided by this embodiment has a simple structure and does not require manpower, and the combination of the scraper rope and the scraper blade is convenient and quick during the cleaning process, thereby improving the cleaning effect and cleaning efficiency.

[0034] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0035] See also Figure 1 The drilling tool cleaning device provided by the embodiment of the present invention includes a fixing ring 100, a scraper rope 200 and a scraper blade 300, wherein the fixing ring 100 is installed on the drilling platform and is arranged around the core-filling hole 400 of the drilling platform; the scraper rope 200 is connected to the fixing ring 100, and a part of the scraper rope 200 is wound around the outer wall of the drilling tool 600 to clean the drilling fluid; the scraper blade 300 is arranged on the inner side of the fixing ring 100, and the side of the scraper blade 300 facing the core-filling hole contacts the outer wall of the drilling tool 600 to clean the drilling fluid.

[0036] In the drilling tool cleaning device provided in the embodiment of the present invention, the fixing ring 100 is used to fix the scraper rope 200 and the scraper blade 300. Specifically, the fixing ring 100 can be set on the drilling platform and fixedly connected to the core filling on the drilling platform. It should be noted that in the present embodiment, the core filling can be detachably installed on the drilling platform table, and the middle part of the core filling has a core filling hole 400, and the drilling tool 600 extends into the oil well from the core filling hole 400. In the present embodiment, the fixed connection between the fixing ring 100 and the core filling can be welding, or it can be connected by screws, bolts 500 or pins. The fixing ring 100 can be set as a circular ring-shaped fixing ring 100, and can also be set as a rectangular ring-shaped fixing ring 100. The present embodiment does not specifically limit the shape of the fixing ring 100. Taking the fixing ring 100 as an annular fixing ring 100 as an example, when the fixing ring 100 is an annular fixing ring 100, the annular fixing ring 100 is set on the drilling platform and connected to the core, and the annular fixing ring 100 is located on the outside of the core hole 400, the diameter of the annular fixing ring 100 is larger than the diameter of the core hole 400, and the center of the annular fixing ring 100 coincides with the center of the core hole 400.

[0037] The scraper rope 200 and the scraper blade 300 are used to clean the drilling fluid adhered to the outer wall of the drilling tool 600. Specifically, the scraper rope 200 is connected to the fixing ring 100, and a portion of the scraper rope 200 is wound around the outer wall of the drilling tool 600. The scraper rope 200 and the fixing ring 100 can be connected by setting a plurality of bolts 500 on the fixing ring 100, and then tying the ends of the scraper rope 200 to the plurality of bolts 500. It should be noted that, if Figure 1 and Figure 2 As shown, the bolt 500 can be arranged at the top of the fixing ring 100 or at the bottom of the fixing ring 100, and the relative position between the bolt 500 and the fixing ring 100 is not specifically limited in this embodiment; the scraping rope 200 can also be connected to the fixing ring 100 by winding one end of the scraping rope 200 around the fixing ring 100. The number of the scraping rope 200 can be one or more, and the number of the scraping rope 200 is not specifically limited in this embodiment.

[0038] Specifically, Figure 1As shown, there are three scraper ropes 200, and correspondingly, three bolts 500 are arranged on the fixing ring 100, and the three bolts 500 are evenly distributed on the fixing ring 100, and the angle between each two adjacent bolts 500 is 120°. One end of each scraper rope 200 is connected to one of the bolts 500, and the other end is connected to another adjacent bolt 500 after passing through the drilling tool 600 located in the core-filling hole 400, that is, the two ends of each scraper rope 200 are respectively connected to the two adjacent bolts 500, and each bolt 500 is respectively connected to the ends of two scraper ropes 200, and the middle rope section of each scraper rope 200 is fitted with the outer wall of the drilling tool 600, and the fitting angle is approximately equal to 120°. The middle rope sections of the three scraper ropes 200 are wound around the outer wall of the drilling tool 600 in a direction approximately equal to 360°, so that the drilling tool 600 can be cleaned in a direction approximately equal to 360°. Since both ends of the scraper rope 200 are connected to the fixing ring 100, the scraper rope 200 can clean the outer wall of the moving drill tool 600 during the upward movement of the drill tool 600. The cleaning process is convenient and quick, and no manual control by workers is required.

[0039] like Figure 2 As shown, the number of the scraper rope 200 is one, and the scraper rope 200 includes a round rope segment and two straight rope segments respectively connected to the round rope segment, and the two straight rope segments are respectively located at the two ends of a diameter of the round rope segment. Correspondingly, two bolts 500 are provided on the fixing ring 100, and the two bolts 500 are respectively located at the two ends of a diameter of the fixing ring 100, and the ends of the two straight rope segments away from the round rope segment are respectively connected to the two bolts 500, and the round rope segment is sleeved on the outer wall of the drilling tool 600, and the diameter of the round rope segment is less than or equal to the diameter of the drilling tool 600, so that the scraper rope 200 in this embodiment can realize the cleaning of the drilling tool 600 in a 360° direction. Since the two ends of the scraper rope 200 are connected to the fixing ring 100, the scraper rope 200 can clean the outer wall of the moving drilling tool 600 during the upward movement of the drilling tool 600, and the cleaning process is convenient and fast, and does not require manual control by workers.

[0040] like Figure 3As shown, there are four scraper ropes 200, and correspondingly, four bolts 500 are arranged on the fixing ring 100, and the four bolts 500 are evenly distributed on the fixing ring 100, and the angle between each two adjacent bolts 500 is 90°. One end of each scraper rope 200 is connected to one of the bolts 500, and the other end is connected to another bolt 500 arranged opposite to the bolt 500 after passing through the drill tool 600 located in the core-filling hole 400, that is, the two ends of each scraper rope 200 are respectively connected to the two bolts 500 with an angle of 180°, and each bolt 500 is respectively connected to the ends of the two scraper ropes 200, and the middle rope section of each scraper rope 200 is fitted with the outer wall of the drill tool 600, and the fitting angle is approximately equal to 90°. The middle rope sections of the four scraper ropes 200 are wound around the outer wall of the drill tool 600 in a direction approximately equal to 360°, so that the drill tool 600 can be cleaned in a direction approximately equal to 360°. Since both ends of the scraper rope 200 are connected to the fixing ring 100, the scraper rope 200 can clean the outer wall of the moving drill tool 600 during the upward movement of the drill tool 600. The cleaning process is convenient and quick, and no manual control by workers is required.

[0041] In the vertical direction, the scraper blade 300 can be arranged above the scraper rope 200 or below the scraper rope 200. When the scraper blade 300 and the scraper rope 200 are connected to the fixing ring 100 respectively by bolts 500, the scraper blade 300 and the scraper rope 200 can share multiple bolts 500. At this time, preferably, the bolts 500 can be arranged at the bottom of the fixing ring 100, and the scraper blade 300 and the scraper rope 200 are both arranged below the fixing ring 100, and the scraper blade 300 is located below the scraper rope 200. During the upward movement of the drilling tool 600, the drilling fluid adhered to the outer wall of the drilling tool 600 can flow into the oil well after being scraped off by the scraper blade 300 or the scraper rope 200. The number of the scraper blades 300 can be one or more, and the number of the scraper blades 300 is not specifically limited in this embodiment. The shape of the scraper blade 300 can be a circular ring, a fan ring, a rectangle or other shapes. The present embodiment does not specifically limit the shape of the scraper blade 300, as long as one end of the scraper blade 300 contacts the outer wall of the drill tool 600 and can scrape off the drilling fluid on the outer wall of the drill tool 600.

[0042] When the drill cleaning tool provided in this embodiment is in operation, the firmness of the connection between the scraper blade 300 and the scraper rope 200 and the fixing ring 100 is first checked before drilling, so as to ensure that the scraper blade 300 and the scraper rope 200 cannot fall off the fixing ring 100; then drilling is started, and during the rising process of the drill tool 600, most of the drilling fluid adhering to the outer wall of the drill tool 600 is scraped off by the scraper rope 200 and the scraper blade 300 and falls into the anti-overflow umbrella in the oil well. It should be noted that the drill cleaning device provided in this embodiment operates continuously during the drilling process. During the drilling process, the scraper rope 200 and the scraper blade 300 can be adjusted according to the cleanliness of the drilling fluid on the outer wall of the drill tool 600. For example, when the worker observes that there is a lot of drilling fluid residue on the outer wall of the drill tool 600, the length of the scraper rope 200 can be shortened to make the contact between the scraper rope 200 and the outer wall of the drill tool 600 closer, thereby improving the cleaning effect of the outer wall of the drill tool 600. At the same time, the relative distance between the scraper blade 300 and the outer wall of the drill tool 600 can also be adjusted to improve the tightness of the contact between the scraper blade 300 and the outer wall of the drill tool 600, thereby improving the cleaning effect of the outer wall of the drill tool 600.

[0043] In summary, this embodiment replaces the previous method of manually cleaning the outer wall of the drill tool 600 by setting a fixing ring 100, a scraper rope 200 and a scraper blade 300 on the drilling platform, wherein the fixing ring 100 is respectively connected to the scraper rope 200 and the scraper blade 300 to fix the scraper rope 200 and the scraper blade 300, and the scraper rope 200 and the scraper blade 300 are respectively in close contact with the outer wall of the drill tool 600, and the drilling fluid on the outer wall of the drill tool 600 is cleaned by scraping the outer wall of the drill tool 600. The drilling tool cleaning device provided by this embodiment has a simple structure and does not require manpower, and the combination of the scraper rope 200 and the scraper blade 300 is convenient and quick during the cleaning process, thereby improving the cleaning effect and cleaning efficiency.

[0044] Furthermore, the scraper blade 300 is provided with a plurality of reflux holes 310 for the drilling fluid to pass through. In the present embodiment, the scraper blade 300 is provided with a plurality of reflux holes 310, and the reflux holes 310 are through holes. The plurality of reflux holes 310 can be evenly arranged on the scraper blade 300. Normally, the drilling fluid scraped off by the scraper rope 200 or the scraper blade 300 will fall into the overflow umbrella in the oil well, but it is inevitable that some drilling fluid will fall on the upper surface of the scraper blade 300 as the drilling tool 600 rises. The reflux holes 310 are used to provide a channel for the drilling fluid falling on the upper surface of the scraper blade 300 to flow back into the oil well. Specifically, as Figure 1 and Figure 4As shown, a plurality of reflow holes 310 are unevenly distributed on the scraper blade 300. When the drilling fluid scraped off by the scraper rope 200 or the scraper blade 300 falls on the upper surface of the scraper blade 300, the drilling fluid can flow back to the overflow prevention umbrella in the oil well through the above-mentioned reflow holes 310, thereby avoiding excessive accumulation on the scraper blade 300 and avoiding secondary cleaning of the scraper blade 300, thereby further improving the cleaning efficiency and cleaning effect of the drilling tool 600.

[0045] In a possible implementation, the fixing ring 100 is an annular fixing ring 100, and the top surface of the fixing ring 100 is higher than the top surface of the scraper blade 300 in the vertical direction. In this embodiment, the fixing ring 100 is set in an annular shape, and the annular fixing ring 100 is arranged around the core hole 400 of the drilling platform, and the scraper blade 300 is arranged on the inner side of the fixing ring 100 and connected to the fixing ring 100. Figure 5 As shown, the scraper blade 300 and the fixing ring 100 both have a certain thickness, and in the vertical direction, the top surface of the fixing ring 100 is higher than the top surface of the scraper blade 300. There are many ways to connect the scraper blade 300 and the fixing ring 100. Specifically, for example, the scraper blade 300 can be connected to the bottom of the fixing ring 100. For another example, the middle of the fixing ring 100 is provided with a groove extending from the center of the circle to the outside along the radial direction thereof, and the scraper blade 300 is inserted into the above groove and connected to the fixing ring 100 by bolts. In this embodiment, by making the top surface of the fixing ring 100 higher than the top surface of the scraper blade 300 in the vertical direction, it is ensured that the fixing ring 100 can block the drilling fluid falling on the upper surface of the scraper blade 300 from flowing out, thereby preventing the drilling fluid from flowing out and increasing the difficulty of cleaning.

[0046] In a possible implementation, the scraper blade 300 is an annular scraper blade 300, and the inner diameter of the annular scraper blade 300 is less than or equal to the diameter of the drilling tool 600. In this embodiment, the scraper blade 300 is annular in shape, and the number of the annular scraper blade 300 can be set to one. The annular scraper blade 300 is arranged on the inner side of the fixing ring 100 and is connected to the fixing ring 100. Specifically, Figure 2 and Figure 4 As shown, the inner diameter of the annular scraper blade 300 is less than or equal to the diameter of the drill tool 600. Such a setting enables the inner side of the annular scraper blade 300 to be in close contact with the outer wall of the drill tool 600, thereby cleaning the drilling fluid adhering to the outer wall of the drill tool 600 during the upward movement of the drill tool 600. It should also be noted that the outer diameter of the annular scraper blade 300 is greater than the inner diameter of the fixing ring 100. Such a setting can ensure the reliability of the connection between the annular scraper blade 300 and the fixing ring 100. In addition, the number of the annular scraper blades 300 in this embodiment can also be set to multiple, and multiple annular scraper blades 300 are stacked in sequence in the vertical direction, so as to further improve the cleaning effect of the drill tool 600.

[0047] In another possible implementation, the scraper blade 300 is a fan-shaped scraper blade 300, and the inner diameter of the fan-shaped scraper blade 300 is less than or equal to the diameter of the drilling tool 600. In this embodiment, the scraper blade 300 is fan-shaped, and the number of the fan-shaped scraper blades 300 can be one or more. One or more fan-shaped scraper blades 300 are arranged on the inner side of the fixing ring 100, one end of which is connected to the fixing ring 100, and the other end extends to the core-filling hole 400. The inner side of the fan-shaped scraper blade 300 contacts the outer wall of the drilling tool 600, so as to clean the drilling fluid adhering to the outer wall of the drilling tool 600 during the upward movement of the drilling tool 600.

[0048] Furthermore, there are multiple fan-shaped scraper blades 300, and the multiple fan-shaped scraper blades 300 form a ring. Specifically, this embodiment is described with the number of fan-shaped scraper blades 300 being three, such as Figure 1 As shown, three fan-shaped scraper blades 300 are arranged around the core-filling hole 400, and the central angle of each fan-shaped scraper blade 300 is equal to or greater than 120°. The outer side of the fan-shaped scraper blade 300 is connected to the fixing ring 100, and the inner side is in contact with the outer wall of the drilling tool 600. In this embodiment, the fan-shaped scraper blades 300 are arranged in a circle to clean the drilling tool 600 in a 360° direction, further improving the cleaning effect.

[0049] In a possible implementation, the scraper blade 300 is an elastic rubber scraper blade 300. In this embodiment, the scraper blade 300 is an elastic rubber scraper blade 300. The scraper blade 300 made of rubber has elasticity. The scraper blade 300 is described as an annular scraper blade 300. The inner diameter of the annular scraper blade 300 is slightly smaller than the diameter of the drill tool 600, which ensures that the annular scraper blade 300 is in close contact with the outer wall of the drill tool 600. When the drill tool 600 moves upward, the drilling fluid adhering to the outer wall of the drill tool 600 can be scraped off by the annular scraper blade 300, thereby cleaning the drill tool 600. In this embodiment, the elastic rubber scraper blade 300 can clean the drill tool 600 without scratching the drill tool 600. In addition, the scraper blade 300 can also be set as a rubber sheet filled with steel wire, or a thin steel sheet or a thin aluminum sheet.

[0050] In a possible implementation, the scraper blade 300 is connected to the fixing ring 100 by bolts. Specifically, the scraper blade 300 is described as an annular scraper blade 300. The outer side of the annular scraper blade 300 is located at the bottom of the fixing ring 100. The bolts pass through the annular scraper blade 300 and the fixing ring 100 from the bottom of the annular scraper blade 300 upwards, thereby connecting the annular scraper blade 300 and the fixing ring 100 together. In addition, the scraper blade 300 and the fixing ring 100 can also be connected by bolts 500 or pins. Since the fixing ring 100 can be connected to the drilling platform by bolts, the scraper blade 300 and the fixing ring 100 can be installed on the drilling platform at the same time by bolts.

[0051] In a possible implementation, the scraper rope 200 is an elastic scraper rope 200. In this embodiment, the scraper rope 200 is configured as an elastic scraper rope 200, specifically a rubber rope. The elastic scraper rope 200 is not only conducive to scraping off the drilling fluid adhering to the outer wall of the drilling tool 600, but also the elastic scraper rope 200 is not easily damaged during long-term use, thereby ensuring the service life.

[0052] Preferably, the number of the scraper ropes 200 is three, and both ends of each scraper rope 200 are connected to the fixing ring 100 respectively, and the middle part of each scraper rope 200 is in contact with the outer wall of the drilling tool 600. Figure 1 and Figure 4 As shown, three scraper ropes 200 are arranged around the bushing hole 400 . The three scraper ropes 200 are respectively wound around the drilling tool 600 and closely fit the outer wall of the drilling tool 600 to clean the drilling fluid on the outer wall of the drilling tool 600 .

[0053] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A drilling tool cleaning device, characterized in that: The invention comprises a fixed ring, a scraper rope and a scraper blade, wherein the fixed ring is installed on the drilling platform and arranged around the core-bushing hole of the drilling platform; the scraper rope is connected to the fixed ring, and a part of the scraper rope is wound around the outer wall of the drilling tool to clean the drilling fluid; the scraper blade is arranged on the inner side of the fixed ring, and the side of the scraper blade facing the core-bushing hole contacts the outer wall of the drilling tool to clean the drilling fluid; During the drilling process, the scraper rope and the scraper blade are adjusted according to the drilling fluid cleaning condition of the outer wall of the drilling tool; The scraper rope comprises a round rope segment and two straight rope segments respectively connected to the round rope segment, the two straight rope segments are respectively located at two ends of a diameter of the round rope segment, and the diameter of the round rope segment is less than or equal to the diameter of the drilling tool; The scraper blade is an annular scraper blade, and the inner diameter of the annular scraper blade is less than or equal to the diameter of the drilling tool.

2. The drilling tool cleaning device according to claim 1, characterized in that: The scraper blade is provided with a plurality of reflux holes for the drilling fluid to pass through.

3. The drilling tool cleaning device according to claim 1, characterized in that: The fixing ring is an annular fixing ring, and the top surface of the fixing ring is higher than the top surface of the scraper blade in the vertical direction.

4. The drilling tool cleaning device according to claim 1, characterized in that: The scraper blade is an elastic rubber scraper blade.

5. The drilling tool cleaning device according to claim 4, characterized in that: The scraper blade is connected to the fixing ring via bolts.

6. The drilling tool cleaning device according to claim 1, characterized in that: The scraper rope is an elastic scraper rope.

7. The drilling tool cleaning device according to claim 1 or 6, characterized in that: The number of the scraping ropes is three, and both ends of each scraping rope are respectively connected to the fixing ring, and the middle part of each scraping rope is in contact with the outer wall of the drilling tool.

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