Slurry scraping device

Abstract

The invention relates to a mud scraping device, and relates to the technical field of petroleum drilling exploitation. The frame body comprises the first seat body and the second seat body which are rotationally connected, and the frame body can be unfolded or combined in a rotating mode, so that the frame body can be arranged outside the drilling tool after the drilling tool drills downwards. And the mud scraper arranged on the frame body can be used for cleaning the mud of the drilling tool. The mud scraping device can be conveniently disassembled and assembled, so that different drilling tools can be cleaned by adjusting the arrangement position of the mud scraping device, the number of the mud scraping devices in a construction site is reduced, and the construction cost of the construction site is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of oil drilling and exploitation, in particular to a mud scraping device. Background Art

[0002] During the oil drilling operation, the drilling tool lowered into the well is lifted to the ground when the drilling is completed or comes to an end, or in order to replace a worn drill bit, extract cores, troubleshoot well faults, or for other purposes. This is called pulling out the drill. During the pulling out process, the drilling fluid adhering to the drill pipe needs to be scraped off.

[0003] At present, in order to remove the mud on the drilling tool, a mud scraper device needs to be arranged at the wellhead. In order to better scrape the mud on the drilling tool, the mud scraper device is multi-framed outside the drilling tool so as to clean the mud from multiple angles on the drilling tool.

[0004] However, due to the setting of the frame structure, it is difficult to deploy the mud scraper device after the drill bit is drilled, resulting in the need to arrange the mud scraper device at the wellhead for a long time. When multiple wells are working at the same time, a mud scraper device needs to be installed at each wellhead, increasing the construction cost at the construction site. Summary of the invention

[0005] The invention provides a slurry scraping device for reducing the construction cost at a construction site.

[0006] The present invention provides a mud scraping device, comprising: a frame body, the frame body comprising a first seat body and a second seat body, the first seat body being rotatably connected to the second seat body through a rotating connecting piece, and the rotating shaft of the rotating connecting piece is vertically arranged; a first locking piece is provided on a side of the first seat body away from the rotating connecting piece, and a second locking piece is provided on an end of the second seat body away from the rotating connecting piece, and the second locking piece is detachably connected to the first locking piece; the second seat body is constructed to enclose a mud scraping space with the first seat body when the first locking piece is locked and connected to the second locking piece; and a mud scraper, which is installed on the frame body.

[0007] In one embodiment, the first seat body is provided with a first curved surface, and the second seat body is provided with a second curved surface, and the first curved surface and the second curved surface are used to define a mud scraping space in the shape of a cylindrical hole.

[0008] In one embodiment, the first base and the second base are both provided with a mud scraper, and the mud scraper is configured to be evenly arranged in the mud scraping space when the first locking member is locked and connected with the second locking member.

[0009] In one embodiment, the mud scraper includes a spray head connected to an air supply pipeline.

[0010] In one embodiment, the air supply pipeline is also connected to an open-close quick connector for connecting to a compressed air source, and the open-close quick connector is configured to be in a normally closed state before being connected to an external air source.

[0011] In one embodiment, the nozzle is connected to a telescopic mechanism, and one end of the telescopic mechanism away from the nozzle is mounted on the frame.

[0012] In one embodiment, the first seat body is installed with a first cover plate, the first cover plate partially extends outside the first seat body to form a first mud guard portion, and the first mud guard portion is located above the first seat body;

[0013] The second seat body is provided with a second cover plate, the second cover plate partly extends outside the first seat body to form a second mud guard portion, and the second mud guard portion is located above the second seat body;

[0014] The second mud stopper is configured to form a through hole with the first mud stopper when the first locking member and the second locking member are locked. The through hole is communicated with the mud scraping space and is used for the drilling tool to pass through.

[0015] In one embodiment, the first cover plate is detachably mounted on the first base; and / or the second cover plate is detachably mounted on the second base.

[0016] In one embodiment, rollers are installed on the bottom of the first base and the bottom of the second base.

[0017] In one embodiment, the detachable locking connection between the first locking member and the second locking member includes one or more of a snap connection, a plug connection, and a screw connection.

[0018] Compared with the prior art, the advantage of the present invention is that one end of the first seat body and the second seat body are rotatably connected, and the other end is detachably connected. After the drilling tool is drilled, the first locking member and the second locking member can be unlocked, and the angle between the first seat body and the second seat body can be increased, so that the frame body can be conveniently sleeved outside the drilling tool. After that, the first seat body and the second seat body are locked by locking connection to form a scraping space for the drilling tool to pass through, so that the frame body is sleeved outside the drilling tool, and the scraper can be used to achieve multi-directional mud cleaning. Since there is no need to arrange the scraping device before drilling, the occupancy time of the scraping device is reduced, and the scraping device can be conveniently adjusted according to the drilling conditions on site to achieve mud cleaning for different drilling tools. The number of scraping devices can be reduced, and the construction cost at the construction site can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Hereinafter, the present invention will be described in more detail based on embodiments and with reference to the accompanying drawings.

[0020] Figure 1 is a schematic diagram of the three-dimensional structure of the mud scraping device in an embodiment of the present invention when the frame is unfolded;

[0021] Figure 2 It is a schematic diagram of a three-dimensional structure in which a mud scraping device frame is arranged outside a drilling tool in an embodiment of the present invention;

[0022] Figure 3 It is a three-dimensional structural schematic diagram of an embodiment of the present invention in which a mud scraping device frame is arranged outside a drilling tool from another viewing angle.

[0023] Reference numerals:

[0024] 1. frame; 11. first seat; 12. second seat; 13. rotating connecting member; 14. first locking member; 15. second locking member;

[0025] 2. Mud scraper; 21. Sprinkler; 22. Open and close quick connector;

[0026] 31. First cover plate; 32. Second cover plate;

[0027] 4. Roller;

[0028] 9. Drilling tools. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] See also Figures 1 to 3 As shown, an embodiment of the present invention provides a mud scraping device, which includes:

[0031] A frame 1 and a scraper 2 mounted on the frame 1. Since the frame 1 includes a first seat 11 and a second seat 12 that are rotatably connected by a rotating connecting member 13, when the first locking member 14 and the second locking member 15 are unlocked, the angle between the first seat 11 and the second seat 12 can be adjusted by rotation, thereby realizing the expansion of the frame 1. The expanded frame 1 can be conveniently arranged outside the drilling tool 9, and subsequently, the first locking member 14 and the second locking member 15 are connected by adjusting the angle between the first seat 11 and the second seat 12, so that the first seat 11 and the second seat 12 enclose a scraper space to realize the frame 1 being arranged outside the drilling tool 9. The scraper 2 arranged on the frame 1 can realize the cleaning of mud from the drilling tool 9 that passes through the scraper space.

[0032] See also Figure 1 as well as Figure 2 As shown, in some embodiments, the frame 1 is a square frame structure, wherein the first seat 11 and the second seat 12 are respectively configured as half-frame structures. In other embodiments, the frame 1 can also be configured as a frame structure of other shapes, such as a triangle, a circle, etc. The shape of the frame 1 is not limited here, as long as the frame can be set outside the drilling tool 9.

[0033] Since the first base body 11 and one end of the second base body 12 are rotatably connected through the rotating connecting member 13 in the present application, the first base body 11 and the second base body 12 can be aligned by rotation, which improves the assembly efficiency of the frame 1 and the assembly accuracy of the frame 1 compared to a completely independent loose parts structure.

[0034] See also Figure 1 As shown, in some embodiments, the first seat body 11 is provided with a first curved surface, and the second seat body 12 is provided with a second curved surface, and the first curved surface and the second curved surface are used to define a cylindrical mud scraping space.

[0035] Since the first arc surface and the second arc surface enclose a cylindrical hole-shaped scraping space, the distances from the center of the scraping space in all directions are equal. During installation, it is only necessary to ensure that the arc surface is concentric with the well wall. The installation angle requirement for the frame 1 is relatively low. Compared with square or irregular-shaped scraping spaces, the positioning difficulty of the frame 1 is reduced.

[0036] See also Figure 1 and Figure 2 As shown, in some embodiments, the first base 11 and the second base 12 are both provided with a scraper 2, and the scraper 2 is configured to be evenly arranged in the scraping space when the first locking member 14 and the second locking member 15 are locked and connected.

[0037] By evenly arranging the scrapers 2 in the scraping space, the mud in all directions of the drilling tool 9 can be evenly scraped, which has a better scraping effect. In this embodiment, two scrapers 2 are arranged on the first seat 11 and the second seat 12. In other embodiments, the number of scrapers 2 can be increased or decreased according to the degree of mud pollution or the size of the drilling tool 9.

[0038] See also Figure 1 As shown, in some embodiments, the scraper 2 includes a nozzle 21, and the nozzle 21 is connected to an air supply pipeline. That is to say, in this embodiment, the scraper 2 cleans the mud by jetting, and the cleaning process causes little damage to the drill tool 9, and the jetting air pressure can be controlled to conveniently control the cleaning intensity. In some embodiments, a pressure regulating structure can be set in the air supply pipeline to adjust the air pressure in the air supply pipeline according to the required cleaning intensity.

[0039] In another embodiment, the scraper 2 can also be set as a water gun structure or a scraper structure. The water gun structure cleans the mud on the drill tool 9 by spraying water to the drill tool 9, and the scraper structure cleans the mud on the drill tool 9 by utilizing the drilling of the drill tool 9 to achieve relative movement between the scraper and the drill tool 9.

[0040] In some embodiments, the nozzle 21 is connected to a telescopic mechanism, and one end of the telescopic mechanism away from the nozzle 21 is installed on the frame 1. The position of the nozzle 21 can be adjusted by the telescopic mechanism, and then the distance between the nozzle 21 and the drill 9 can be adjusted. It can meet the cleaning work of drills 9 of different sizes. Specifically, when the diameter of the drill 9 is large, the telescopic mechanism is retracted to avoid the nozzle 21 being too close to the drill 9 and causing damage; when the diameter of the drill 9 is small, the telescopic mechanism is extended to avoid the nozzle 21 being too far from the drill 9 and causing poor cleaning effect.

[0041] See also Figures 1 to 3 As shown, in some embodiments, the first seat body 11 is installed with a first cover plate 31, and the first cover plate 31 partially extends outside the first seat body 11 to form a first mud guard portion, and the first mud guard portion is located above the first seat body 11; the second seat body 12 is installed with a second cover plate 32, and the second cover plate 32 partially extends outside the first seat body 11 to form a second mud guard portion, and the second mud guard portion is located above the second seat body 12; the second mud guard portion is constructed to form a through hole with the first mud guard portion when the first locking member 14 and the second locking member 15 are locked, and the through hole is communicated with the mud scraping space and is used for the drill bit 9 to pass through.

[0042] The first mud guard and the second mud guard can reduce the mud splashing out of the mud scraping space during the scraping sprayer mud process, reducing the subsequent cleaning work. And because the first cover plate 31 and the second cover plate 32 are independently arranged, they can be conveniently framed outside the drilling tool 9 through the rotation of the first seat body 11 and the second seat body 12, eliminating the work of splicing to form a through hole.

[0043] In some embodiments, the first cover plate 31 is detachably mounted on the first base body 11; and / or the second cover plate 32 is detachably mounted on the second base body 12. Through the detachable connection, different cover plate structures can be replaced according to the size of the drilling tool 9.

[0044] In some embodiments, a slide groove is provided on the frame 1, and the first cover plate 31 and the second cover plate 32 are slidably installed on the frame 1, and the first cover plate 31 and the second cover plate 32 can be disassembled and assembled by sliding. In another embodiment, the first cover plate 31 and the second cover plate 32 can also be installed on the first base 11 and the second base 12 by a detachable connection method such as snap connection or plug connection.

[0045] See also Figures 1 to 3 As shown, in some embodiments, rollers 4 are installed at the bottom of the first seat body 11 and the second seat body 12. The difficulty of adjusting the angle between the first seat body 11 and the second seat body 12 can be reduced. The roller 4 can be a universal wheel, so that the roller 4 can roll more flexibly. In order to prevent the roller 4 from rolling during the mud scraping process, a locking device can be set at the roller 4. After the roller 4 moves to a preset position, the locking device is used to lock the roller 4 to prevent the main body from moving.

[0046] In some embodiments, the locking connection between the first locking member 14 and the second locking member 15 includes one or more of a snap connection, a plug connection, and a screw connection. Figure 1 and Figure 2 As shown, in some embodiments, the first locking member 14 and the second locking member 15 can form a locking nose mechanism, and when locking is required, the locking hole plate of the second locking member 15 is rotatably sleeved outside the first locking member 14, so that the first locking member 14 is inserted into the locking hole of the locking hole plate, thereby achieving a locking effect. The first seat body 11 is prevented from moving relative to the second seat body 12.

[0047] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A mud scraping device, characterized in that: It includes: A frame, the frame comprising a first seat and a second seat, the first seat being rotatably connected to the second seat via a rotatable connecting member, and a rotating shaft of the rotatable connecting member being arranged vertically; A first locking member is provided on one side of the first seat away from the rotating connecting member, and a second locking member is provided on one end of the second seat away from the rotating connecting member, and the second locking member is detachably connected to the first locking member; The second seat body is configured to enclose a mud scraping space with the first seat body when the first locking member is locked and connected with the second locking member; and A scraper is installed on the frame.

2. The mud scraping device according to claim 1, characterized in that: The first seat body is provided with a first arc surface, and the second seat body is provided with a second arc surface. The first arc surface and the second arc surface are used to define a mud scraping space in the shape of a cylindrical hole.

3. The mud scraping device according to claim 1, characterized in that: The first seat body and the second seat body are both provided with the scrapers, and the scrapers are configured to be evenly arranged in the scraping space when the first locking member is locked and connected with the second locking member.

4. The mud scraping device according to claim 1, characterized in that: The scraper comprises a nozzle, and the nozzle is connected with an air supply pipeline.

5. The mud scraping device according to claim 4, characterized in that: The air supply pipeline is also connected to an open-close quick connector for connecting to a compressed air source, and the open-close quick connector is configured to be in a normally closed state before being connected to an external air source.

6. The mud scraping device according to claim 4 or 5, characterized in that: The nozzle is connected with a telescopic mechanism, and one end of the telescopic mechanism away from the nozzle is installed on the frame.

7. The mud scraping device according to claim 1, characterized in that: The first seat body is provided with a first cover plate, the first cover plate partially extends outside the first seat body to form a first mud guard portion, and the first mud guard portion is located above the first seat body; The second seat body is provided with a second cover plate, the second cover plate partly extends outside the first seat body to form a second mud guard portion, and the second mud guard portion is located above the second seat body; The second mud stopper is configured to form a through hole with the first mud stopper when the first locking member and the second locking member are locked, and the through hole is communicated with the mud scraping space and is used for a drill to pass through.

8. The mud scraping device according to claim 7, characterized in that: The first cover plate is detachably mounted on the first base; and / or The second cover plate is detachably mounted on the second base.

9. The mud scraping device according to claim 1, characterized in that: Rollers are installed at the bottom of the first seat body and the bottom of the second seat body.

10. The mud scraping device according to claim 1, characterized in that: The detachable locking connection between the first locking member and the second locking member includes one or more of a snap connection, a plug connection and a screw connection.

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