Screw drill centralizer for petroleum

Abstract

The utility model relates to the technical field of drilling tool centralizers, and discloses a petroleum screw drilling tool centralizer which comprises a centralizing equipment shell, a plurality of first rotating shafts are rotatably connected to the inner wall of the centralizing equipment shell at equal intervals, inclined plates are fixedly connected to the outer sides of the first rotating shafts, and second rotating shafts are rotatably connected to the bottoms of the inclined plates. Balls are fixedly connected to the outer sides of the second rotating shafts, a plurality of metal springs are fixedly connected to the inner side of the centralizing equipment shell at equal intervals, the tail ends of the metal springs are fixedly connected to the outer sides of the inclined plates, a drill rod is arranged in the middle of the inner side of the centralizing equipment shell, and sliding grooves are formed in the periphery of the outer wall of the drill rod. According to the drilling rod centralizer, through combination of the rotating plate and the arc-shaped plate and extrusion of the metal spring, the installation work of the drilling rod is completed, meanwhile, the matched fixing assembly is installed, the centralizer can be used for installing drilling rods of different sizes and models, and the construction efficiency is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of drill tool centralizers, in particular to a screw drill tool centralizer for petroleum. Background Art

[0002] Oil screw drilling tools are a kind of drilling tools used for drilling operations in the process of oil and gas exploration, exploitation and production. It is a rotary drilling tool consisting of a series of drill pipes and drill bits. It drills into underground rock formations by rotating the drill bit and applying downward pressure. Screw drilling tools are usually used for deep well drilling and drilling in complex formations. They are efficient, stable and controllable, and are widely used in the field of oil and gas exploration and production.

[0003] In the process of screw drill bits for oil drilling, it is necessary to install a stabilizer on the outside of the screw drill bits to plan the drilling trajectory. The screw drill bit stabilizer is a device used in the oil drilling process. Its main function is to help the drilling tool maintain a vertical or specific direction in the wellbore to ensure the smooth progress of the drilling operation and prevent the drilling angle from deviating.

[0004] However, the screw drill and the stabilizer are designed as a set. During the use of the screw drill, the screw drill often gets damaged or broken, and a new drill rod needs to be replaced. When the drill rod of the matching size cannot be supplied in time, the drilling work must be stopped, which affects the construction efficiency. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a screw drill centralizer for petroleum, aiming to improve the problem in the prior art that when a drill rod of a matching size cannot be supplied in time, the drilling work must be stopped, affecting the construction efficiency.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a screw drill straightener for petroleum, comprising a straightening device shell, the inner wall of the straightening device shell is equidistantly connected to a plurality of rotating shafts 1, the outer side of the rotating shaft 1 is fixedly connected to an inclined plate, the bottom of the inclined plate is rotatably connected to a rotating shaft 2, the outer side of the rotating shaft 2 is fixedly connected to a ball, the inner side of the straightening device shell is equidistantly fixed to a plurality of metal springs, the ends of the metal springs are fixedly connected to the outer side of the inclined plate, a drill rod is provided at the middle part of the inner side of the straightening device shell, sliding grooves are provided around the outer wall of the drill rod, the balls are respectively slidably connected to the corresponding sliding grooves, a connecting shell is installed on the top of the straightening device shell, a fixing assembly is installed on the inner side of the connecting shell, and a cooling mechanism is installed inside the straightening device shell.

[0007] As a further description of the above technical solution:

[0008] The cooling mechanism includes a hole column, which is installed in the lower middle part of the inner side of the straightening device shell. The front side of the straightening device shell is provided with an opening, a sealing column is installed on the inner side of the opening, a mounting rod is fixedly connected to the inner side of the sealing column, the sealing column is engaged with the opening, a through hole is provided in the middle part of the inner side of the sealing column, an injection groove is provided on the outer side of the drill rod, a drill bit is installed at the bottom of the drill rod, and a slot is provided on the top of the drill bit.

[0009] As a further description of the above technical solution:

[0010] The fixing assembly includes an arc-shaped plate, which is fixedly connected to the inner right side of the connecting shell, a fixing rod is fixedly connected to the left side of the inner wall of the arc-shaped plate, and torsion springs are installed on the front and rear sides of the fixing rod, one end of the torsion spring is fixedly connected to the inner side of the connecting shell, and a rotating plate is rotatably connected to the middle part of the fixing rod, and the other end of the torsion spring is fixedly connected to the front and rear sides of the rotating plate.

[0011] As a further description of the above technical solution:

[0012] Bolts are threadedly connected around the inner side of the connection shell, and the connection shell is threadedly connected to the housing of the straightening device through the bolts.

[0013] As a further description of the above technical solution:

[0014] The inner wall of the rotating plate is provided with an anti-skid pad, and the inner bottom of the rotating plate is installed with a rubber pad.

[0015] As a further description of the above technical solution:

[0016] The front and rear ends of the right side of the rotating plate are both fixedly connected with buckles, and the front and rear ends of the left side of the arc-shaped plate are both provided with clamping grooves, and the buckles are respectively engaged with the corresponding clamping grooves.

[0017] As a further description of the above technical solution:

[0018] A pull ring is fixedly connected to the top of the rotating plate.

[0019] As a further description of the above technical solution:

[0020] Leveling blocks are fixedly connected to the outer wall of the housing of the straightening device on all sides, and the outer wall of the leveling block is provided with a leveling groove.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the ball slides in the slide groove, and the installation of the drill rod is completed by combining the rotating plate and the arc plate and squeezing the metal spring. At the same time, the matching fixing components can be installed, so that the centralizer can be installed with drill rods of different sizes and models for use, avoiding the influence on the construction efficiency.

[0023] 2. In the utility model, during the process of drilling for oil, heat is transferred to the dry ice through the drill bit and the housing of the straightening device, which reacts with the dry ice to emit cold air, thereby cooling the housing of the straightening device and the drill pipe, thereby increasing their service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of a screw drill centralizer for petroleum proposed by the utility model;

[0025] Figure 2 This is an exploded view of the local structure of a screw drill centralizer for petroleum proposed by the utility model;

[0026] Figure 3 This is a partial structural exploded view of a screw drill centralizer for petroleum proposed by the utility model;

[0027] Figure 4 This is a disassembled diagram of the cooling mechanism of a screw drill centralizer for petroleum proposed by the utility model;

[0028] Figure 5 The utility model is a partial structural schematic diagram of a screw drill centralizer for petroleum.

[0029] Legend:

[0030] 1. Housing of the straightening device; 2. Cooling mechanism; 201. Hole column; 202. Sealing column; 203. Mounting rod; 204. Through hole; 205. Opening hole; 206. Drill bit; 207. Slot; 208. Injection groove; 3. Leveling groove; 4. Connecting shell; 5. Ball; 6. Rotating shaft 2; 7. Rotating shaft 1; 8. Inclined plate; 9. Pull ring; 10. Bolt; 11. Metal spring; 12. Slot; 13. Arc plate; 14. Buckle; 15. Anti-skid pad; 16. Rotating plate; 17. Torsion spring; 18. Fixing rod; 19. Rubber pad; 20. Slide; 21. Drill rod; 22. Leveling block. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1 , Figure 2 and Figure 3 The utility model provides an embodiment: a screw drill centralizer for petroleum, comprising a centralizing device housing 1, the inner wall of the centralizing device housing 1 is equidistantly connected with a plurality of rotating shafts 7, the outer side of the rotating shaft 7 is fixedly connected with an inclined plate 8, the bottom of the inclined plate 8 is rotatably connected with a rotating shaft 2 6, the outer side of the rotating shaft 2 6 is fixedly connected with a ball 5, the inner side of the centralizing device housing 1 is equidistantly fixedly connected with a plurality of metal springs 11, the end of the metal spring 11 is fixedly connected to the outer side of the inclined plate 8, a drill rod 21 is arranged in the middle of the inner side of the centralizing device housing 1, and slide grooves 20 are arranged around the outer wall of the drill rod 21, and the ball 5 is slidably connected with the corresponding slide grooves 20 respectively, a connecting shell 4 is installed on the top of the centralizing device housing 1, a fixing assembly is installed on the inner side of the connecting shell 4, and a cooling mechanism 2 is installed inside the centralizing device housing 1; the fixing assembly The component comprises an arc-shaped plate 13, which is fixedly connected to the right side of the interior of the connecting shell 4, a fixing rod 18 is fixedly connected to the left side of the inner wall of the arc-shaped plate 13, and a torsion spring 17 is installed on the front and rear sides of the fixing rod 18, one end of the torsion spring 17 is fixedly connected to the inner side of the connecting shell 4, and a rotating plate 16 is rotatably connected to the middle part of the fixing rod 18, and the other end of the torsion spring 17 is fixedly connected to the front and rear sides of the rotating plate 16; bolts 10 are threadedly connected to the inner side of the connecting shell 4 all around, and the connecting shell 4 is threadedly connected to the housing 1 of the straightening device through the bolts 10; an anti-skid pad 15 is provided on the inner wall of the rotating plate 16, and a rubber pad 19 is installed on the inner bottom of the rotating plate 16; buckles 14 are fixedly connected to the front and rear ends of the right side of the rotating plate 16, and slots 12 are provided on the front and rear ends of the left side of the arc-shaped plate 13, and the buckles 14 are respectively engaged with the corresponding slots 12;

[0033] Specifically, the connecting shell 4 is connected to the housing 1 of the straightening device by means of the bolts 10 to ensure a firm connection; the drill rod 21 is inserted into the housing 1 of the straightening device until the drill rod 21 collides with the rubber pad 19; when the drill rod 21 collides with the rubber pad 19, downward pressure is applied to cause the rubber pad 19 to drop; at the same time, the torsion spring 17 begins to store energy and bear force, driving the rotating plate 16 to flip; during the flipping process, the rotating plate 16 is made to fit the outer wall of the drill rod 21 to prevent sliding; at this time, the anti-skid pad 15 increases the friction between the rotating plate 16 and the drill rod 21; when the rotating plate 16 flips, it drives the buckle 14 to be inserted into the card slot 12 for engagement; in this way The merging of the rotating plate 16 and the arc plate 13 is completed; when the drill rod 21 is inserted into the housing 1 of the straightening device, the downward pressure will squeeze the metal spring 11; at the same time, the rotating shaft 7 rotates to drive the inclined plate 8 to tilt; the ball 5 slides in the slide groove 20 to limit the descending direction of the drill rod 21; the installation of the drill rod 21 is completed by the merging of the rotating plate 16 and the arc plate 13 and the squeezing of the metal spring 11; when the size of the drill rod 21 is small, the inclination angle of the inclined plate 8 will change accordingly; at this time, it is only necessary to install the matching fixing components to make the straightener adapt to drill rods 21 of different sizes to ensure efficient construction.

[0034] Reference Figure 1 , Figure 4 and Figure 5 The cooling mechanism 2 includes a hole column 201, which is installed in the middle and lower part of the inner side of the straightening device housing 1. An opening 205 is provided on the front side of the straightening device housing 1. A sealing column 202 is installed on the inner side of the opening 205. A mounting rod 203 is fixedly connected to the inner side of the sealing column 202. The sealing column 202 is engaged with the opening 205. A through hole 204 is provided in the middle part of the inner side of the sealing column 202. A material injection groove 208 is provided on the outer side of the drill rod 21. A drill bit 206 is installed at the bottom of the drill rod 21. A slot 207 is provided on the top of the drill bit 206.

[0035] Specifically, the operator puts a proper amount of dry ice into the interlayer between the hole column 201 and the housing 1 of the straightening device and the injection groove 208 through the opening 205; part of the dry ice will directly fall into the slot 207 below the injection groove 208; when drilling starts, the drill bit 206 rotates at a high speed and generates friction with the rock formation, generating a large amount of heat; this heat is transferred to the dry ice through the drill bit 206 and the housing 1 of the straightening device; the dry ice sublimates rapidly after being heated, generating a large amount of cold air; this cold air not only cools down the housing 1 of the straightening device and the drill rod 21, but is also discharged through the injection groove 208 and the through hole 204, effectively reducing the temperature of the straightening device 201 and the drill rod 21. The temperature of the drilling equipment is lowered; it is worth mentioning that the design of the opening 205 and the sealing column 202 adopts an embedded structure; this design cleverly avoids direct contact and friction between the sealing column 202 and the rock formation, thereby extending the service life of the sealing column 202; when the sealing column 202 needs to be maintained or replaced, the operator can use tools such as wire ropes or hooks to connect with the installation rod 203 and easily pull out the sealing column 202; this method of cooling with dry ice not only improves the cooling efficiency of the drilling equipment, but also indirectly improves the overall efficiency of the drilling operation by reducing equipment wear and failure.

[0036] Reference Figure 1 and Figure 2 , a pull ring 9 is fixedly connected to the top of the rotating plate 16; a leveling block 22 is fixedly connected to the outer wall of the housing 1 of the straightening device all around, and a leveling groove 3 is opened on the outer wall of the leveling block 22;

[0037] Specifically, the rotating plate 16 is pulled by the pull ring 9 to disconnect the buckle 14 from the slot 12 , and the rock hole drilled by the drilling is polished and smoothed by the cooperation between the leveling block 22 and the leveling slot 3 .

[0038] Working principle: When the centralizer is replaced with a drill pipe for oil, the connecting shell 4 is connected to the centralizer housing 1 by bolts 10, and the drill pipe 21 is taken and inserted into the centralizer housing 1. When the drill pipe 21 hits the rubber pad 19, the downward pressure pulls the rubber pad 19 downward, and at the same time, the torsion spring 17 stores energy and drives the rotating plate 16 to flip, so that the rotating plate 16 fits the outer wall of the drill pipe 21, and the anti-slip pad 15 increases the friction between the rotating plate 16 and the drill pipe 21. At the same time, the rotating plate 16 When flipping, the buckle 14 is inserted into the card slot 12 for engagement, completing the integration of the rotating plate 16 and the curved plate 13. When the drill rod 21 is inserted into the housing 1 of the straightening device, the downward pressure squeezes the metal spring 11, and the rotating shaft 7 rotates, driving the inclined plate 8 to tilt. At the same time, the ball 5 slides in the slide groove 20, limiting the descending direction of the drill rod 21. The installation of the drill rod 21 is completed by the integration of the rotating plate 16 and the curved plate 13 and the squeezing of the metal spring 11. When the size of the drill rod 21 is relatively large, The inclination angle of the inclined plate 8 changes with the drilling process, and the matching fixing components can be installed at the same time, so that the centralizer can be installed with drill rods 21 of different sizes and models for use, thereby avoiding the influence on the construction efficiency. Dry ice is added into the interlayer between the hole column 201 and the centralizing device housing 1 and the injection groove 208 through the opening 205, and part of the dry ice falls into the slot 207 through the injection groove 208. In the process of drilling for oil, heat is transferred to the dry ice through the drill bit 206 and the centralizing device housing 1. Thereby, the dry ice reacts to emit cold air, which cools down the straightening equipment housing 1 and the drill rod 21, and increases their service life. Similarly, the cold air can penetrate from the injection groove 208 and finally be discharged through the through hole 204. The opening 205 and the sealing column 202 are designed to be embedded, which avoids friction between the sealing column 202 and the rock formation. When the sealing column 202 needs to be removed, a tool such as a wire rope or a hook is connected to the installation rod 203, and the sealing column 202 can be pulled out, which brings convenience to use.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A screw drill centralizer for petroleum, comprising a centralizer housing (1), characterized in that: The inner wall of the housing (1) of the straightening device is equidistantly connected to a plurality of rotating shafts (7), the outer side of the rotating shaft (7) is fixedly connected to an inclined plate (8), the bottom of the inclined plate (8) is rotatably connected to a rotating shaft (6), the outer side of the rotating shaft (6) is fixedly connected to a ball (5), the inner side of the housing (1) of the straightening device is equidistantly connected to a plurality of metal springs (11), the ends of the metal springs (11) are fixedly connected to the outer side of the inclined plate (8), a drill rod (21) is provided in the middle of the inner side of the housing (1), the outer wall of the drill rod (21) is provided with sliding grooves (20) all around, the ball (5) is slidably connected to the corresponding sliding grooves (20), a connecting shell (4) is installed on the top of the housing (1), a fixing assembly is installed on the inner side of the connecting shell (4), and a cooling mechanism (2) is installed inside the housing (1).

2. The screw drill centralizer for petroleum according to claim 1, characterized in that: The cooling mechanism (2) comprises a hole column (201), the hole column (201) is installed at the middle and lower part of the inner side of the straightening device housing (1), the front side of the straightening device housing (1) is provided with an opening (205), the inner side of the opening (205) is provided with a sealing column (202), the inner side of the sealing column (202) is fixedly connected with a mounting rod (203), the sealing column (202) is engaged with the opening (205), a through hole (204) is provided at the inner middle part of the sealing column (202), the outer side of the drill rod (21) is provided with a material injection groove (208), the bottom of the drill rod (21) is provided with a drill bit (206), and the top of the drill bit (206) is provided with a slot (207).

3. The screw drill centralizer for petroleum according to claim 1, characterized in that: The fixing assembly comprises an arc-shaped plate (13), the arc-shaped plate (13) being fixedly connected to the right side of the interior of the connecting shell (4), a fixing rod (18) being fixedly connected to the left side of the inner wall of the arc-shaped plate (13), a torsion spring (17) being installed on the front and rear sides of the fixing rod (18), one end of the torsion spring (17) being fixedly connected to the inner side of the connecting shell (4), a rotating plate (16) being rotatably connected to the middle part of the fixing rod (18), and the other end of the torsion spring (17) being fixedly connected to the front and rear sides of the rotating plate (16).

4. The screw drill centralizer for petroleum according to claim 1, characterized in that: Bolts (10) are threadedly connected to the inner sides of the connection shell (4) on all sides, and the connection shell (4) is threadedly connected to the housing (1) of the straightening device via the bolts (10).

5. The screw drill centralizer for petroleum according to claim 3, characterized in that: The inner wall of the rotating plate (16) is provided with an anti-slip pad (15), and the inner bottom of the rotating plate (16) is installed with a rubber pad (19).

6. The screw drill centralizer for petroleum according to claim 3, characterized in that: The front and rear ends of the right side of the rotating plate (16) are fixedly connected with buckles (14), and the front and rear ends of the left side of the arc plate (13) are provided with clamping grooves (12), and the buckles (14) are respectively engaged with the corresponding clamping grooves (12).

7. The screw drill centralizer for petroleum according to claim 3, characterized in that: A pull ring (9) is fixedly connected to the top of the rotating plate (16).

8. The screw drill centralizer for petroleum according to claim 1, characterized in that: Leveling blocks (22) are fixedly connected to the outer wall of the housing (1) of the straightening device on all sides, and the outer wall of the leveling block (22) is provided with a leveling groove (3).

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