Drill rod drilling and scraping device

Abstract

The invention discloses a drill rod pulling and scraping mud device, which comprises a hanging frame assembly, a bracket assembly, a pneumatic assembly, a mud scraper and an electric control box. The hanging frame assembly comprises a support rod and a suspension rod, and the top of the suspension rod is hinged to one end of the top of the support rod; the bracket assembly comprises a steel frame and a mounting frame, and the mounting frames are respectively fixed on both sides of the steel frame in groups of two, and a slide rail is fixed above the mounting frame, and the suspension rod is hinged to the steel frame. The pneumatic assembly comprises a cylinder, a slide frame and a sleeve, the cylinder is fixed on the mounting frame and is controlled by an electromagnetic air valve controlled by the electric control box, the slide frame is slidably connected to the slide rail, the sleeve is fixed on the slide frame, and the telescopic rod of the cylinder drives the slide frame to slide; the mud scraper comprises a cross block, a guide rod, an upper flip assembly, a lower flip assembly and a mud scraper plate, the guide rod is fixed on one side of the cross block, the guide rod slides in the sleeve, the upper flip assembly is hinged to the lower flip assembly, the mud scraper plate is correspondingly fixed on the flip plate of the lower flip assembly, and the mud scraper plate abuts against the outer periphery of the drill rod to scrape mud.

Description

Technical Field

[0001] The invention relates to the field of petroleum drilling equipment, in particular to a drill pipe drilling and scraping device. Background Art

[0002] During the drilling or overhaul of oil and gas wells, when the drill pipe is pulled out of the turntable, there is always a layer of mud on the outer wall of the drill pipe. If appropriate measures are not taken to remove the mud on the outer wall, the mud will float and splash onto the drilling platform and the platform operators, which not only wastes mud, but also causes the operating platform to be slippery, bringing hidden dangers to operational safety. Therefore, it is necessary to manually or with the help of a mud scraper to scrape the mud attached to the outer wall and collect it back into the wellhead when the drill pipe is pulled out. However, when scraping the mud manually, it is not only difficult to scrape it clean, but also greatly increases the extra workload and reduces work efficiency. Although the mud is currently scraped by an annular rubber scraper, the diameter of the couplings at both ends of the drill pipe changes sharply and the outer wall is often clamped by the caliper, resulting in a very short service life of the annular rubber scraper, and the problem of frequent replacement increases the drilling workload and downtime.

[0003] Therefore, how to provide a drill pipe scraping device with high scraping efficiency and long service life is a problem that technical personnel in this field need to solve urgently. Summary of the invention

[0004] In view of this, the present invention provides a drill rod pulling-out mud scraping device, which has high mud scraping efficiency, convenient operation and long service life.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a drill rod pulling and scraping mud device, which comprises a suspension frame assembly, a bracket assembly, a pneumatic assembly, a mud scraper and an electric control box, the suspension frame assembly is a plurality of groups, each group comprises a support rod and a suspension rod, the support rod is an inverted L-shaped structural rod, the top of the suspension rod is hinged to one end of the top of the support rod; the bracket assembly comprises a steel frame and a mounting frame, the mounting frames are grouped in pairs and are respectively fixedly connected to both sides of the steel frame, slide rails are fixed above the mounting frames, lifting ears are arranged around the top of the steel frame, the bottom of the suspension rod is hinged to the lifting ears, the pneumatic components are grouped in pairs and each comprises a cylinder, a slide and a sleeve, the cylinder is fixed on the mounting frame and is electrically connected to the electric control box, the slide is slidably connected to the slide rail, the sleeve is horizontally fixed on the slide, the telescopic rod of the cylinder is fixedly connected to the slide rail to drive the slide to slide on the slide rail;

[0006] The scrapers are arranged in groups of two, each of which includes a cross block, a guide rod, an upper flip assembly, a lower flip assembly and a scraper plate. The guide rod is fixed on one side of the cross block, and the guide rod is slidably connected in the sleeve. The upper flip assembly includes a flip block and a torsion spring. The top of one side of the flip block is hinged with the top of the other side of the cross block through a pin shaft. The torsion spring is sleeved on the pin shaft and is used for flipping the flip block downward and resetting. The lower flip assembly includes a flip plate. The bottom of one side of the flip plate is hinged with the bottom of the other side of the flip block through a pin shaft, and a torsion spring is provided at the hinge for resetting the flip plate upward. The scraper plates are fixed on the flip plates one by one, and the scraper plates abut against the outer periphery of the drill pipe to scrape the mud.

[0007] The beneficial effects of the present invention are as follows: the suspension rod is hinged on the support rod, the suspension rod is hinged with the steel frame, mounting frames are fixed on both sides of the steel frame, a slide rail is fixed above the mounting frame, the cylinder is fixed on the mounting frame, the slide rail is slidably connected to the slide, the slide is fixed to the free end of the cylinder telescopic rod, and the slide reciprocates on the slide rail under the extension and contraction of the cylinder telescopic rod. A sleeve is fixed on the slide, and the sleeve is used for slidingly connecting the guide rod, which is fixedly connected to the cross block. The flip block of the upper flip assembly is hinged with the top of the cross block, so that the flip block can flip upward, and the lower flip assembly The flip plate of the component is hinged with the bottom of the flip block so that the flip plate can flip downward. The scraper plate is fixedly connected to the flip plate, and the scraper plate abuts against the side wall of the drill pipe to scrape mud. When the drill pipe is lifted up, the scraper plate, the flip plate and the flip block can flip upward at a certain angle when the coupling hits them upward. When the drill pipe falls and the coupling hits the scraper plate and the flip plate downward, the torsion spring can automatically reset the flip plate or the flip block, thereby avoiding damage to the scraper plate by the drill pipe coupling, extending its service life and reducing the number of times the scraper plate is replaced.

[0008] Preferably, the top of the boom is fixedly connected to the fisheye bearing and is hinged to one end of the top of the support rod through a pin, the bottom of the boom is hinged to the lifting ear through a pin, and the pin assembled at the top of the boom is perpendicular to the axis of the pin assembled at the bottom of the boom.

[0009] Preferably, the guide rod is a stepped rod, and a spring is sleeved on the outer circumference of the smaller diameter section of the rod, and the spring is located inside the sleeve. The end of the guide rod away from the cross block is fixedly connected to a limiting nut, and the limiting nut abuts against one end of the sleeve.

[0010] Preferably, the cross block and the flip block are both rectangular blocks, the other side of the cross block abuts against one side of the flip block, and a flip ear plate and a sleeve are respectively fixed on both sides of the abutting top, the flip ear plate and the sleeve are hinged through a pin, a torsion spring is sleeved on the pin, and the two free ends of the torsion spring abut against the cross block and the flip block respectively.

[0011] Preferably, the cylinders are fixed to the corresponding mounting frames by fastening screws respectively, and the telescopic rods on the two cylinders in a group are arranged opposite to each other, the free ends of the telescopic rods are fixed with connecting rods, and the connecting rods are fixedly connected to one end of the slide to drive the slide to reciprocate.

[0012] Preferably, the scraper blade includes a scraper blade, a clamping plate, a locking bolt and an anti-loosening steel wire. The clamping plate fixes the scraper blade to the flip plate through the locking bolt. The anti-loosening steel wire is inserted into the through hole of the locking bolt cap. A flip ear plate is fixed to the bottom of the flip plate, and the flip ear plate is hinged to the flip block through a pin. A torsion spring is inserted into the pin, and the two free ends of the torsion spring respectively abut against the flip block and the flip plate.

[0013] Preferably, a semicircular notch is provided on one side of the scraper, the semicircular notch abuts against the outer wall of the drill rod, and the two scrapers arranged opposite to each other can be assembled to enclose the drill rod.

[0014] Preferably, stepped grooves are provided at the semicircular notches, and the stepped grooves on the corresponding two scrapers are arranged in an up-and-down staggered manner.

[0015] Preferably, a flange is fixedly connected to the bottom of the support rod to stabilize the support rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a drill rod drilling and mud scraping device of the present invention;

[0017] Figure 2 It is a schematic diagram of a suspension frame assembly and a bracket assembly of a drill rod drilling and scraping device of the present invention;

[0018] Figure 3 It is a schematic diagram of a pneumatic component of a drill rod drilling and scraping device of the present invention;

[0019] Figure 4 It is a schematic diagram of a mud scraper of a drill pipe pulling-out mud scraper device of the present invention;

[0020] Figure 5 It is a schematic diagram of an upper flip assembly of a drill rod drilling and scraping device of the present invention;

[0021] Figure 6 It is a schematic diagram of a lower flip assembly of a drill rod drilling and scraping device of the present invention;

[0022] Figure 7 It is a schematic diagram of a scraper of a drill pipe drilling and scraping device of the present invention;

[0023] Figure 8 The utility model is a schematic diagram of a mud scraper plate of a drill rod pulling-out mud scraper device of the present invention.

[0024] 1 suspension frame assembly, 101 support rod, 102 suspension rod, 2 bracket assembly, 201 steel frame, 202 mounting frame, 3 pneumatic assembly, 301 cylinder, 3011 telescopic rod, 302 slide, 303 sleeve, 4 scraper, 401 cross block, 402 guide rod, 403 upper flip assembly, 4031 flip block, 4032 torsion spring, 404 lower flip assembly, 4041 flip plate, 405 scraper plate, 4051 scraper plate, 4052 clamping plate, 4053 locking bolt, 4054 anti-loosening wire, 5 electric control box, 6 slide rail, 7 lifting ear, 8 fisheye bearing, 9 pin shaft, 10 spring, 11 limit nut, 12 flip ear plate, 13 connecting rod, 14 step groove, 15 flange. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0026] See the attached Figures 1 to 8 According to an embodiment of the present invention, a drill pipe drilling and scraping device includes a suspension frame assembly 1, a bracket assembly 2, a pneumatic assembly 3, a scraper 4 and an electric control box 5. The suspension frame assembly 1 is a plurality of groups, each group includes a support rod 101 and a suspension rod 102, the support rod 101 is an inverted L-shaped structural rod, and the top of the suspension rod 102 is hinged to one end of the top of the support rod 101; the bracket assembly 2 includes a steel frame 201 and a mounting frame 202, the mounting frames 202 are grouped in pairs and are respectively fixedly connected to both sides of the steel frame 201, and the mounting frames The top of the steel frame 201 is fixed with a slide rail 6, and the top of the steel frame 201 is provided with a lifting lug 7. The bottom of the suspension rod 102 is hinged with the lifting lug. The pneumatic components 3 are grouped in pairs, and each includes a cylinder 301, a slide 302 and a sleeve 303. The cylinder 301 is fixed on the mounting frame 202 and is electrically connected to the electric control box 5. The slide 302 is slidably connected to the slide rail 6. The sleeve 303 is horizontally fixed on the slide 302. The telescopic rod 3011 of the cylinder 301 is fixedly connected to the slide 302 to drive the slide 302 to slide on the slide rail.

[0027] The scrapers 4 are arranged in pairs and opposite to each other, and each of them includes a cross block 401, a guide rod 402, an upper flip assembly 403, a lower flip assembly 404 and a scraper plate 405. The guide rod 402 is fixed on one side of the cross block 401, and the guide rod 402 is slidably connected in the sleeve 303. The upper flip assembly 403 includes a flip block 4031 and a torsion spring 4032. The top of one side of the flip block 4031 is hinged to the top of the other side of the cross block 401 through a pin shaft 9. The torsion spring 4032 is sleeved on the pin shaft and is used for flipping the flip block downward and resetting. The lower flip assembly 404 includes a flip plate 4041. The bottom of one side of the flip plate 4041 is hinged to the bottom of the other side of the flip block 4031 through a pin shaft, and a torsion spring for resetting the flip plate upward is provided at the hinge. The scraper plates 405 are fixed on the flip plates 4041 one by one, and the scraper plates 405 abut against the outer periphery of the drill pipe to scrape mud. The mud on the surface is scraped off by lifting the drill pipe.

[0028] The electronic control box controls the movement of the cylinder by controlling the electromagnetic valve, thereby controlling the clamping and loosening of the scraper.

[0029] In other embodiments, the top of the suspension rod 102 is fixedly connected to the fisheye bearing 8 and is hinged to the top end of the support rod 101 through a pin, and the bottom of the suspension rod 102 is hinged to the lifting lug 7 through a pin, and the pin assembled on the top of the suspension rod 102 is perpendicular to the axis of the pin assembled at the bottom of the suspension rod. The suspension rod, the bracket assembly and the device carried thereon are allowed to swing moderately in all directions within the range of the wellhead casing along with the drill pipe.

[0030] In other specific embodiments, the guide rod 402 is a stepped rod, and a spring 10 is sleeved on the outer periphery of the smaller diameter section of the rod, and the spring 10 is located inside the sleeve 303. The end of the guide rod 402 away from the cross block 401 is fixedly connected to the limit nut 11, one end of the spring abuts against the shoulder of the guide rod, and the other end is located inside the sleeve and abuts against the ring plate at one end of the sleeve. The spring causes the limit nut 11 to abut against one end of the sleeve 303.

[0031] In other embodiments, the cross block 401 and the flip block 4031 are both rectangular blocks, the other side of the cross block 401 abuts against one side of the flip block 4031, and the two sides of the abutted top are respectively fixed with a flip ear plate 12 and a sleeve, and the flip ear plate and the sleeve can be respectively fixed on the top of the cross block and the flip block, and the flip ear plate 12 and the sleeve are hinged by a pin shaft to realize the upward flipping of the flip block relative to the cross block, and a torsion spring is sleeved on the pin shaft 9, and the two free ends of the torsion spring 4032 abut against the cross block 401 and the flip block. Provide a certain torque, the flip block can only flip upward under the connection of the flip ear plate, and reset under the action of the torsion spring after flipping, and flip upward to a certain angle after exceeding the torsion spring torque when the coupling is hit upward, and automatically return to its original position after the coupling passes; the torsion spring has a certain torque, and will not flip upward when scraping mud, but will overcome the torque and flip to a certain angle when subjected to a large impact force from the coupling, and automatically return to its original position after the coupling passes.

[0032] Specifically, the cylinders 301 are fixed to the corresponding mounting frames 202 by fastening screws, and the telescopic rods 3011 on the two cylinders in a group are arranged in opposite directions. The free ends of the telescopic rods 3011 are fixed to the connecting rod 13, and the connecting rod 13 is fixedly connected to one end of the slide 302 to drive the slide to reciprocate.

[0033] More specifically, the scraper blade 405 includes a scraper blade 4051, a clamping plate 4052, a locking bolt 4053 and an anti-loosening wire 4054. The clamping plate 4052 fixes the scraper blade 4051 to the flip plate 4041 through the locking bolt 4053. The anti-loosening wire 4054 is connected to the through hole of the cap of the locking bolt 4053. A flip ear plate is fixed to the bottom of the flip plate 4041, and the flip ear plate is hinged to the flip block 4031 through a pin shaft. The flip plate 4041 is flipped downward by the flip ear plate. A torsion spring is sleeved on the pin shaft. The two free ends of the torsion spring are respectively abutted against the flip block 4031 and the flip plate 4041, so as to facilitate the upward resetting of the scraper blade.

[0034] In some other embodiments, a semicircular notch is provided on one side of the scraper 4051, and the semicircular notch abuts against the outer wall of the drill rod. The two scrapers arranged opposite to each other can be assembled to enclose the drill rod.

[0035] Step grooves 14 are provided at the semicircular notches, and the step grooves on the corresponding two scrapers 4051 are arranged in an up-down staggered manner.

[0036] The scraper is preferably but not limited to a thick rubber plate made of nitrile rubber material with a hardness of about HA:85. The left and right pieces have the same shape, and the arc diameter of the semicircular notch is determined according to the actual diameter of the drill rod. The step groove at the joint of each scraper is half the thickness of the plate, and the width of the step groove is appropriate. When clamped, the left and right pieces are turned upside down so that one step groove is on the top and the other is on the bottom. When the two sides are closed, the step groove and the protruding part are staggered with each other, and a horizontal expansion joint is provided. In this way, when the scraper is clamped after being worn on the left and right sides, the protruding part is avoided from being supported, thereby extending the life of the scraper; each clamping plate can fix the scraper on the flip plate through a number of locking bolts with holes in the cap, and then the locking bolts of each clamping plate are threaded with anti-loosening steel wire to prevent them from falling off.

[0037] More specifically, a flange 15 for stabilizing the support rod is fixedly connected to the bottom of the support rod 101. The flange positions the support rod on the disk surface of the mud guard at the lower part of the drilling rig rotary table.

[0038] The electric control box is controlled by the driller remotely through the PLC to control the electromagnetic valve to push the cylinder and drive the scraper to clamp when drilling or release when scraping is not needed.

[0039] The drill rod lifting and mud scraping device of the present invention has a simple structure and strong adaptability. When the drill rod is lifted up, when the coupling hits the scraper, the flip plate and the flip block are flipped upward at a certain angle. After the coupling passes, it is reset under the action of the torsion spring and continues to scrape mud. When the drill rod falls, it is hit downward by the coupling, and the scraper and the flip plate can be flipped downward at a certain angle. The clamping force of the scraper is automatically compensated by the spring, so the scraping effect is good, the speed is fast, the service life is long, and the number of times the scraper is replaced is greatly reduced.

[0040] As for the device and the method of use disclosed in the embodiment, since they correspond to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drill pipe pulling out mud scraping device, characterized in that: The invention comprises a suspension frame assembly (1), a bracket assembly (2), a pneumatic assembly (3), a scraper (4) and an electric control box (5); the suspension frame assembly (1) comprises a plurality of groups, each group comprising a support rod (101) and a suspension rod (102); the support rod (101) is an inverted L-shaped structural rod; the top of the suspension rod (102) is hinged to one end of the top of the support rod (101); the bracket assembly (2) comprises a steel frame (201) and a mounting frame (202); the mounting frames (202) are grouped in pairs and are respectively fixedly connected to the two sides of the steel frame (201); a slide rail (6) is fixed on the top of each mounting frame (202); The top of the steel frame (201) is provided with lifting ears (7) around it, the bottom of the suspension rod (102) is hinged to the lifting ears, the pneumatic components (3) are grouped in pairs and each includes a cylinder (301), a slide (302) and a sleeve (303), the cylinder (301) is fixed on the mounting frame (202) and is electrically connected to the electric control box (5), the slide (302) is slidably connected to the slide rail (6), the sleeve (303) is horizontally fixed on the slide (302), and the telescopic rod (3011) of the cylinder (301) is fixedly connected to the slide (302) to drive the slide (302) to slide on the slide rail; The scrapers (4) are arranged in pairs and opposite to each other, each comprising a cross block (401), a guide rod (402), an upper flip assembly (403), a lower flip assembly (404) and a scraper blade (405); the guide rod (402) is fixed to one side of the cross block (401); the guide rod (402) is slidably connected in the sleeve (303); the upper flip assembly (403) comprises a flip block (4031) and a torsion spring (4032); a top of one side of the flip block (4031) is connected to the other side of the cross block (401); The top of the side is hinged by a pin shaft (9), and the torsion spring (4032) is sleeved on the pin shaft and is used for the flip block to flip downward and reset; the lower flip assembly (404) comprises a flip plate (4041), the bottom of one side of the flip plate (4041) and the bottom of the other side of the flip block (4031) are hinged by a pin shaft, and a torsion spring for resetting the flip plate (4041) upward is provided at the hinge, and the scraping plates (405) are fixed on the flip plates (4041) one by one, and the scraping plates (405) contact the outer periphery of the drill pipe to scrape mud.

2. A drill pipe pulling out mud scraping device according to claim 1, characterized in that: The top of the suspension rod (102) is fixedly connected to the fisheye bearing (8) and is hinged to one end of the top of the support rod (101) through a pin. The bottom of the suspension rod (102) is hinged to the lifting ear (7) through a pin. The pin assembled at the top of the suspension rod (102) is perpendicular to the axis of the pin assembled at the bottom of the suspension rod.

3. A drill pipe pulling out mud scraping device according to claim 1, characterized in that: The guide rod (402) is a stepped rod, and a spring (10) is sleeved on the outer circumference of the rod section with a smaller diameter. The spring (10) is located inside the sleeve (303). One end of the guide rod (402) away from the cross block (401) is fixedly connected to a limiting nut (11), and the limiting nut (11) abuts against one end of the sleeve (303).

4. A drill pipe pulling out mud scraping device according to claim 1, characterized in that: The cross block (401) and the flip block (4031) are both rectangular blocks. The other side of the cross block (401) abuts against one side of the flip block (4031), and a flip ear plate (12) and a sleeve are fixed on both sides of the abutting top respectively. The flip ear plate (12) and the sleeve are hinged by a pin shaft. A torsion spring is sleeved on the pin shaft (9). The two free ends of the torsion spring (4032) abut against the cross block (401) and the flip block respectively.

5. The drill pipe pulling out mud scraping device according to claim 1, characterized in that: The cylinders (301) are fixed to the corresponding mounting frames (202) by means of fastening screws, respectively, and the telescopic rods (3011) on the two cylinders in a group are arranged in opposition to each other, the free ends of the telescopic rods (3011) are fixed to the connecting rod (13), and the connecting rod (13) is fixedly connected to one end of the slide (302) to drive the slide to reciprocate.

6. The drill pipe pulling out mud scraping device according to claim 1, characterized in that: The scraper (405) comprises a scraper (4051), a clamping plate (4052), a locking bolt (4053) and an anti-loosening wire (4054); the clamping plate (4052) fixes the scraper (4051) to the flip plate (4041) through the locking bolt (4053); the anti-loosening wire (4054) is connected to the through hole of the cap of the locking bolt (4053); a flip ear plate is fixed to the bottom of the flip plate (4041), and the flip ear plate is hinged to the flip block (4031) through a pin shaft; a torsion spring is sleeved on the pin shaft, and the two free ends of the torsion spring are respectively abutted against the flip block (4031) and the flip plate (4041).

7. A drill pipe pulling out mud scraping device according to claim 6, characterized in that: A semicircular notch is provided on one side of the scraper (4051), and the semicircular notch abuts against the outer wall of the drill rod. The two scrapers arranged opposite to each other can be assembled to enclose the drill rod.

8. The drill pipe pulling out mud scraping device according to claim 7, characterized in that: Step grooves (14) are provided at the semicircular notches, and the step grooves on the corresponding two scrapers (4051) are arranged in an up-and-down staggered manner.

9. The drill pipe pulling out mud scraping device according to claim 1, characterized in that: The bottom of the support rod (101) is fixedly connected with a flange (15) for stabilizing the support rod.

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