Impact toughness uniformity control device for high-steel-grade sulfur-resistant drill rod joint

Abstract

The utility model relates to the technical field of petroleum and natural gas exploration, and discloses an impact toughness uniformity control device of a high-steel-grade sulfur-resistant drill rod joint, which comprises a drill rod shell, a buffer mechanism is arranged at the upper end of the outer wall of the drill rod shell, and the buffer mechanism is used for buffering impact force at the bottom end of a drill rod. A telescopic mechanism is installed in the drill rod shell and extends the drill rod through a handle. The buffering mechanism comprises a sliding outer cylinder, and a pressure release valve is connected to the upper end of the middle of the outer wall of the sliding outer cylinder. According to the utility model, the drill rod shell generates vertical impact force after working to drive the supporting plate to move upwards, the buffer rod is driven to release the upward impact force through the spring, and the impact force generated downwards is offset by the compression wood plate through the buffer air cylinder and the buffer rod, so that the position of the buffer mechanism is adjusted according to different conditions; the damage of impact load to the surface treatment layer of the drill rod is reduced, and the toughness resistance of the drill rod is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of oil and gas exploration technology, especially to the impact toughness uniformity control device of high steel grade sulfur resistance drill rod joint. BACKGROUND

[0002] Drill pipe is a kind of steel pipe with thread at tail, connects drilling rig surface equipment and drilling bottom end drilling and grinding equipment or bottom hole device, the purpose of drill pipe is to use drilling mud to transport to drill bit, and with drill bit together to improve, lower or rotate bottom hole device, drill pipe can withstand huge internal and external pressure, distortion, bending and vibration, in the exploitation and refining process of oil and gas, drill pipe can be used repeatedly, drill pipe is divided into square drill pipe, drill pipe and weighted drill pipe three categories, the impact toughness uniformity control device of drill pipe joint is a kind of equipment for improving the impact toughness and uniformity of drill pipe joint.

[0003] The drill pipe joint in prior art adopts high toughness alloy structural steel to strengthen matrix by alloy element, suppresses dislocation movement, thereby improves the ability of material to resist crack propagation, but will break and separate from matrix interface under long-term load, thereby gradually forming micropores, and these pores will act as crack source and gradually expand under cyclic stress, thereby leading to cracking, and further reducing the toughness resistance of drill pipe joint, the prior art adds nitriding layer with good wear resistance to the outside of drill pipe to improve surface hardness and wear resistance, and at the same time can improve corrosion resistance, can effectively prevent the formation of surface wear and corrosion pits, and avoid cracks caused by surface damage, but when drill pipe joint works, the nitriding layer will crack due to impact, and after the crack expands to matrix, will accelerate the fatigue damage of matrix material, and when drill pipe joint works, the nitriding layer will crack due to impact, and further reduces the toughness resistance of drill pipe. SUMMARY

[0004] In order to make up for the above shortcomings, the utility model provides the impact toughness uniformity control device of high steel grade sulfur resistance drill rod joint, aims at improving the problem that in prior art, drill pipe surface coating cracks due to impact force for a long time when drill pipe works, thereby reducing the service life of drill pipe and unable to explore deeper environment.

[0005] In order to achieve the above object, the utility model discloses the following technical scheme: drill rod joint toughness control device, including the drill rod shell, the outer wall upper end of drill rod shell is installed with buffer mechanism, the buffer mechanism is used for buffering the impact force of drill rod bottom end, the inside of drill rod shell is installed with telescopic mechanism, the telescopic mechanism utilizes handle and lengthens drill rod, telescopic mechanism utilizes buckle slot and fixes telescopic drill rod, the outer wall upper end of drill rod shell is fixedly connected with support plate, buffer mechanism includes sliding outer tube, sliding outer tube is installed on the outer wall upper end of drill rod shell, the outer wall middle part upper end of sliding outer tube is connected with pressure relief valve, the outer wall top of pressure relief valve is fixedly connected with fixed circular plate, the inside right -hand member of fixed circular plate is fixedly connected with screw post, the outer wall left side of screw post is installed with compression board, the bottom equidistance of compression board is installed with a plurality of buffer air cylinders, the outer wall lower end of buffer air cylinder is fixedly connected with support plate, the top wall middle part of support plate is fixedly connected with buffer rod, the inner wall top of sliding outer tube is fixedly connected with spring.

[0006] As a further description of the above technical solution:

[0007] Telescopic mechanism includes support telescopic buckle, and the telescopic buckle is installed on the inner bottom wall of the drill rod shell, the outer wall right side lower end of the support plate is provided with an anti-rotation round rod, the outer wall lower end bottom of the anti-rotation round rod is provided with a drill bit, the outer wall upper end left side of the drill bit is fixedly connected with a telescopic drill rod, and the outer wall middle upper left side of the anti-rotation round rod is provided with a driving assembly.

[0008] As a further description of the above technical solution:

[0009] The driving assembly includes a rotating handle, a bevel gear one is fixedly connected to the outer wall right side of the rotating handle, a bevel gear two is meshedly connected to the bottom of the bevel gear one, a rotating shaft is fixedly connected to the outer wall right end of the bevel gear one, and a threaded rod is fixedly connected to the outer wall bottom end of the bevel gear two.

[0010] As a further description of the above technical solution:

[0011] The inside of the buffer air cylinder is slidably connected to the outer wall of the compression board, a plurality of long rods are equidistantly installed on the outer wall lower end of the compression board, and the outer wall of the long rod is slidably connected to the inside of the buffer air cylinder.

[0012] As a further description of the above technical solution:

[0013] The outer wall left and right sides of the telescopic drill rod are fixedly connected with fixed square plates, and the inside of the fixed square plate is slidably connected to the outer wall of the anti-rotation round rod.

[0014] As a further description of the above technical solution:

[0015] A fixing nut is installed on the upper part of the outer wall of the threaded post, and the inside of the fixing nut is threadedly connected to the outer wall of the threaded post.

[0016] As a further description of the above technical solution:

[0017] The bottom left and right sides of the drill rod housing are provided with buckle grooves, and the bottom left and right sides of the outer wall of the telescopic drill rod are fixed with telescopic buckles.

[0018] As a further description of the above technical solution:

[0019] The pressure relief valve has multiple vent grooves evenly spaced on the front side of its inner wall, and the vent grooves are circular in shape.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the vertical impact force generated by the drill rod shell after operation drives the support plate upward, thereby driving the buffer rod to release the upward impact force through the spring. Then, the compressed wooden board uses the buffer air cylinder and buffer rod to offset the downward impact force. Furthermore, the position of the buffer outer cylinder can be adjusted by the threaded column, thereby adjusting the position of the buffer mechanism according to different conditions. Therefore, the damage to the surface treatment layer of the drill rod caused by the impact load generated by the drill rod during operation is reduced, and the toughness and resistance of the drill rod are improved.

[0022] 2. In this utility model, rotating the handle drives the first bevel gear to rotate, and the first bevel gear meshes with the second bevel gear to rotate. The rotation of the second bevel gear drives the rotation of the threaded rod, so that the threaded rod rotates to extend and retract the telescopic drill rod to a certain length, thereby extending the length of the drill rod. The length of the drill rod can be adjusted according to different working environments and needs to achieve the telescopic effect of the drill rod. Attached Figure Description

[0023] Figure 1 This is a front view of the impact toughness uniformity control device for high-strength sulfur-resistant drill pipe joints proposed in this utility model.

[0024] Figure 2 This is a perspective view of the impact toughness uniformity control device for high-strength sulfur-resistant drill pipe joints proposed in this utility model.

[0025] Figure 3 This is an exploded view of the buffer mechanism of the impact toughness uniformity control device for the high-strength sulfur-resistant drill pipe joint proposed in this utility model.

[0026] Figure 4 A diagram illustrating the buffer mechanism of the impact toughness uniformity control device for the high-strength sulfur-resistant drill pipe joint proposed in this utility model.

[0027] Figure 5 The telescopic mechanism of the impact toughness uniformity control device for high-steel-grade sulfur-resistant drill rod joints is shown in the schematic view of the utility model.

[0028] Figure 6 The telescopic mechanism of the impact toughness uniformity control device for high-steel-grade sulfur-resistant drill rod joints is shown in the schematic view of the utility model.

[0029] Legend:

[0030] 1, drill rod shell; 2, buffer mechanism; 201, sliding outer cylinder; 202, threaded column; 204, buffer rod; 205, spring; 206, compression board; 207, fixed circular plate; 208, buffer cylinder; 209, long rod; 210, fixed nut; 211, pressure relief valve; 212, air vent groove; 3, telescopic mechanism; 301, telescopic buckle; 302, anti-rotation round rod; 304, telescopic drill rod; 305, fixed square plate; 306, drill bit; 307, driving assembly; 3071, rotating handle; 3072, bevel gear one; 3073, bevel gear two; 3074, threaded rod; 3075, rotating shaft; 4, support plate; 5, buckle groove. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0032] Reference Figure 1 , Figure 3 and Figure 4The utility model provides a kind of embodiment: the impact toughness uniformity control device of high steel grade sulphur resistance drill rod joint, including drill rod shell 1, the outer wall upper end of drill rod shell 1 is equipped with buffer mechanism 2, the buffer mechanism 2 is used to buffer the impact force of drill rod bottom end, retractable mechanism 3 is installed in the inside of drill rod shell 1, the retractable mechanism 3 utilizes handle and extends drill rod, the retractable mechanism 3 utilizes buckle slot 5 and is fixed with telescopic drill rod 304, the outer wall upper end of drill rod shell 1 is fixedly connected with support plate 4;The buffer mechanism 2 includes sliding outer cylinder 201, the sliding outer cylinder 201 is installed on the outer wall upper end of drill rod shell 1, the outer wall middle part upper end of sliding outer cylinder 201 is connected with pressure relief valve 211, the outer wall top of pressure relief valve 211 is fixedly connected with fixed round plate 207, the inside right end of fixed round plate 207 is fixedly connected with threaded column 202, the outer wall left side of threaded column 202 is equipped with compression board 206, the bottom of compression board 206 is equipped with a plurality of buffer air cylinder 208 at equal intervals, the outer wall lower end of buffer air cylinder 208 is fixedly connected with support plate 4, the top wall middle part of support plate 4 is fixedly connected with buffer rod 204, the inside top of sliding outer cylinder 201 is fixedly connected with spring 205, the inside of sliding outer cylinder 201 is slidably connected with the outer wall of compression board 206, the outer wall lower end of compression board 206 is equipped with a plurality of long rod 209 at equal intervals, the outer wall of long rod 209 is slidably connected with the inside of buffer air cylinder 208, the outer wall upper portion of threaded column 202 is equipped with fixed nut 210, the inside of fixed nut 210 is threadedly connected with the outer wall of threaded column 202;

[0033] Specifically, the impact force generated when the drill rod shell 1 works drives the support plate 4 to compress the sliding outer cylinder 201 upwards, so that the spring 205 inside the sliding outer cylinder 201 contracts. The drill rod shell 1 is fixedly connected with the support plate 4, thereby buffering the vertical upward impact force generated when the drill rod works. After the spring 205 relieves the impact force, it drives the compression board 206 downwards. The buffer air cylinder 208 buffers the vertical downward impact force of the drill rod shell 1 under the action of the compression board 206. The compression board 206 is slidably connected with the sliding outer cylinder 201, so that it can slide up and down when working. The outer wall middle part upper end of the sliding outer cylinder 201 is slidably connected with the pressure relief valve 211. The outer wall top of the pressure relief valve 211 is fixedly connected with the fixed round plate 207. The inside right end of the fixed round plate 207 is fixedly connected with the threaded column 202. The threaded column 202 is used to adjust the height of the sliding outer cylinder 201, so as to adjust the appropriate height according to the working intensity of the drill rod. A plurality of air permeation grooves 212 are equidistantly arranged on the inner wall front side of the pressure relief valve 211. The air permeation grooves 212 are circular in shape. The air permeation grooves 212 balance the air pressure of the sliding outer cylinder 201, so that the sliding outer cylinder 201 resets after the air pressure is balanced.

[0034] ReferFigure 5 And Figure 6 The telescopic mechanism 3 comprises a telescopic buckle 301, an anti-rotation round rod 302 is installed on the right side of the outer wall of the telescopic buckle 301, a drill bit 306 is arranged at the lower end of the outer wall of the anti-rotation round rod 302, a telescopic drill rod 304 is fixedly connected to the left side of the upper end of the outer wall of the drill bit 306, a driving assembly 307 is installed on the left side of the upper middle portion of the outer wall of the anti-rotation round rod 302, the driving assembly 307 comprises a rotating handle 3071, a bevel gear one 3072 is fixedly connected to the right side of the outer wall of the rotating handle 3071, a bevel gear two 3073 is meshedly connected to the bottom of the bevel gear one 3072, a rotating shaft 3075 is fixedly connected to the right end of the outer wall of the bevel gear one 3072, a threaded rod 3074 is fixedly connected to the bottom end of the outer wall of the bevel gear two 3073, fixed square plates 305 are fixedly connected to the left and right sides of the outer wall of the telescopic drill rod 304, and the inner portions of the fixed square plates 305 are in sliding connection with the outer wall of the anti-rotation round rod 302.

[0035] Specifically, the rotating handle 3071 is rotated to drive the rotation of the bevel gear one 3072, the rotating shaft 3075 is fixedly connected to the right side of the outer wall of the bevel gear one 3072, the outer wall of the rotating shaft 3075 is installed on the drill rod shell 1, the bevel gear one 3072 is meshedly connected with the bevel gear two 3073, so that the bevel gear one 3072 and the bevel gear two 3073 can be synchronously rotated, the rotation of the bevel gear one 3072 drives the rotation of the bevel gear two 3073, the threaded rod 3074 starts to rotate under the drive of the bevel gear two 3073, the telescopic drill rod 304 is threadedly connected to the outer wall of the threaded rod 3074, and the telescopic drill rod 304 starts to elongate under the drive of the threaded rod 3074, the upper end of the anti-rotation round rod 302 is fixedly connected to the lower end of the supporting plate 4, so that the self-rotation of the threaded rod 3074 is prevented, and normal telescopic operation is achieved.

[0036] Referring to Figure 2 , Figure 3 and Figure 5 The bottom left and right sides of the drill rod shell 1 are provided with buckle grooves 5, the bottom left and right sides of the outer wall of the telescopic drill rod 304 are fixedly provided with telescopic buckles 301, a plurality of air permeation grooves 212 are equidistantly arranged on the inner wall of the pressure relief valve 211, and the air permeation grooves 212 are circular in shape.

[0037] Specific, by the drill rod shell 1 start work after the generation of vertical direction upward impact force, sliding outer tube 201 will also start to move up, through the compression of the spring 205 to achieve the effect of buffering impact force, at the same time through the upper pressure relief valve 211 release pressure, facilitate the subsequent sliding outer tube 201 reset, there are multiple air slots 212 set in the outer side of the pressure relief valve 211, for balancing air pressure, telescopic drill rod 304 outer wall bottom left and right side are fixed telescopic buckle 301, through the drive assembly 307 drive telescopic drill rod 304 rotation, when telescopic drill rod 304 telescopic to a certain length, through the left and right telescopic buckle 301 fixed on the drill rod shell 1.

[0038] Working principle: through the drill rod shell 1 in work after the generation of vertical direction impact force drive support plate 4 upwards, thereby drive buffer rod 204 through spring 205 release upward impact force, again by compression wood plate 206 will produce downward impact force through 208 buffer cylinder and buffer rod 204 produce offset impact force effect, and can be through the threaded column 202 adjust the position of sliding outer tube 201, thereby according to different conditions adjust the position of buffer mechanism 2, therefore reduce the damage to the surface treatment layer of drill pipe due to the impact load generated by the drill pipe in work, improve the toughness of the drill pipe;

[0039] By rotating the rotary handle 3071 drive bevel gear one 3072 rotation, bevel gear one 3072 drive bevel gear two 3073 rotation through meshing, thereby through the rotation of bevel gear two 3073 drive threaded rod 3074 rotation, make threaded rod 3074 through rotation telescopic drill rod 304 telescopic to a certain length, thereby lengthen the length of the drill pipe, can according to different working environment and demand adjust the length of the drill pipe, in this way realize the telescopic effect of the drill pipe.

[0040] Finally, it should be noted that: the above only for the preferred embodiments of the present application have, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be modified to the technical scheme recorded in the foregoing embodiments, or equivalent replacement of part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. A device for controlling the uniformity of impact toughness of high-strength sulfur-resistant drill pipe joints, comprising a drill pipe housing (1), characterized in that: A buffer mechanism (2) is installed on the upper end of the outer wall of the drill pipe housing (1). The buffer mechanism (2) is used to buffer the impact force at the bottom of the drill pipe. A telescopic mechanism (3) is installed inside the drill pipe housing (1). The telescopic mechanism (3) extends the drill pipe using a handle. The telescopic mechanism (3) fixes the telescopic drill pipe (304) using a snap-fit ​​groove (5). A support plate (4) is fixedly connected to the upper end of the outer wall of the drill pipe housing (1). The buffer mechanism (2) includes a sliding outer cylinder (201). The sliding outer cylinder (201) is installed on the upper end of the outer wall of the drill pipe housing (1). The upper end of the middle part of the outer wall of the sliding outer cylinder (201) is connected to... There is a pressure relief valve (211), and a fixed circular plate (207) is fixedly connected to the top of the outer wall of the pressure relief valve (211). A threaded column (202) is fixedly connected to the right end of the inner wall of the fixed circular plate (207). A compressed wooden board (206) is installed on the left side of the outer wall of the threaded column (202). Multiple buffer air cylinders (208) are installed at equal intervals at the bottom of the compressed wooden board (206). A support plate (4) is fixedly connected to the lower end of the outer wall of the buffer air cylinder (208). A buffer rod (204) is fixedly connected to the middle of the top wall of the support plate (4). A spring (205) is fixedly connected to the top of the inner wall of the sliding outer cylinder (201).

2. The impact toughness uniformity control device for high-strength sulfur-resistant drill pipe joints according to claim 1, characterized in that: The telescopic mechanism (3) includes a telescopic buckle (301), an anti-rotation rod (302) is installed on the right side of the outer wall of the telescopic buckle (301), a drill bit (306) is provided at the lower end of the outer wall of the anti-rotation rod (302), a telescopic drill rod (304) is fixedly connected to the left side of the upper end of the outer wall of the drill bit (306), and a drive assembly (307) is installed on the left side of the upper middle part of the outer wall of the anti-rotation rod (302).

3. The impact toughness uniformity control device for high-strength sulfur-resistant drill pipe joints according to claim 2, characterized in that: The drive assembly (307) includes a rotating handle (3071), a bevel gear one (3072) is fixedly connected to the right side of the outer wall of the rotating handle (3071), a bevel gear two (3073) is meshed with the bottom of the bevel gear one (3072), a rotating shaft (3075) is fixedly connected to the right end of the outer wall of the bevel gear one (3072), and a threaded rod (3074) is fixedly connected to the bottom end of the outer wall of the bevel gear two (3073).

4. The impact toughness uniformity control device for high-grade sulfur-resistant drill pipe joints according to claim 2, characterized in that: The interior of the sliding outer cylinder (201) is slidably connected to the outer wall of the compressed wooden board (206). Multiple long rods (209) are equidistantly installed at the lower end of the outer wall of the compressed wooden board (206). The outer wall of the long rods (209) is slidably connected to the interior of the buffer air cylinder (208).

5. The impact toughness uniformity control device for high-grade sulfur-resistant drill pipe joints according to claim 3, characterized in that: The telescopic drill rod (304) has fixed square plates (305) fixedly connected to the left and right sides of its outer wall. The interior of the fixed square plates (305) is slidably connected to the outer wall of the anti-rotation round rod (302).

6. The impact toughness uniformity control device for high-strength sulfur-resistant drill pipe joints according to claim 2, characterized in that: A fixing nut (210) is installed on the upper part of the outer wall of the threaded column (202), and the interior of the fixing nut (210) is threadedly connected to the outer wall of the threaded column (202).

7. The impact toughness uniformity control device for high-grade sulfur-resistant drill pipe joints according to claim 3, characterized in that: The bottom left and right sides of the drill rod housing (1) are provided with buckle grooves (5), and the bottom left and right sides of the outer wall of the telescopic drill rod (304) are fixed with telescopic buckles (301).

8. The impact toughness uniformity control device for high-strength sulfur-resistant drill pipe joints according to claim 2, characterized in that: The pressure relief valve (211) has multiple vent grooves (212) equidistantly arranged on the front side of its inner wall, and the vent grooves (212) are circular in shape.

Images