Mechanical arm device for storing kelly bars in derrick

Abstract

The utility model relates to a mechanical arm device for storing a kelly bar in a derrick, the mechanical arm device comprises a telescopic mechanism, a rotating mechanism and a grabbing mechanism for fixing the kelly bar, the telescopic mechanism is fixedly arranged on a support, and the support is hinged to the derrick; the rotating mechanism is arranged on the derrick and drives the whole support to rotate in the horizontal plane. The telescopic mechanism is connected with the grabbing mechanism through a telescopic arm and drives the grabbing mechanism to do linear motion. The kelly bar and the faucet are transferred to the side face of the derrick from the center of a wellhead, the traveling block running space is avoided, and the situation that the kelly bar and the faucet occupy the space of a drill floor surface or the workload of placing the kelly bar and the faucet on the ground is avoided; the utility model is especially suitable for drilling machines and workover rigs which have small drill floor areas and are difficult to arrange kelly bars and faucet storage positions, especially workover rigs without drill floors, and can greatly reduce the labor intensity and improve the operation efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas well drilling and production in oil and gas fields, in particular to a mechanical arm device for storing kelly rods in a derrick. Background Art

[0002] In oil drilling rigs and workover rigs, when the square drill rod and swivel are inserted into the rat hole of the drill floor, they occupy a large space on the drill floor, easily interfering with surrounding equipment and affecting the escape route of personnel. In addition, in some workover rigs, since they are not equipped with a drill floor, the square drill rod and swivel must be placed on the ground when not in use, which increases the workload of the operator.

[0003] The existing method is to insert the kelly and the swivel into the rat hole: the kelly and the swivel are lowered by the traveling block and the hook, the operator on the drilling floor drags the lower end of the kelly to the rat hole, the traveling block and the hook continue to descend, and the kelly and the swivel are inserted into the rat hole;

[0004] Place the Kelly and the swivel on the ground: Place the Kelly and the swivel on the ground using the traveling block hook and auxiliary lifting equipment.

[0005] The main problems with existing methods are: 1. They occupy a large area on the drill floor, easily interfering with surrounding equipment, and the drill floor structure of the drilling rig and well repair rig is large; 2. They affect the escape route of personnel; 3. Rat holes need to be pre-set in the well site foundation; 4. Inserting the drill rod into the rat hole or placing the drill rod and faucet on the drill floor is labor-intensive. Utility Model Content

[0006] In order to solve the above problems, the utility model provides a mechanical arm device for storing the kelly in the derrick, which moves the kelly and the swivel from the center of the wellhead to the side of the derrick, avoiding the operating space of the traveling block, thereby avoiding the kelly and the swivel occupying the space on the drilling table or the workload of placing the kelly and the swivel on the ground.

[0007] The technical solution adopted by the utility model is: a mechanical arm device for storing kelly rods in a derrick, characterized in that it comprises a telescopic mechanism, a rotating mechanism and a grabbing mechanism for fixing the kelly rods, the telescopic mechanism is fixedly arranged on a bracket, and the bracket is hinged on the derrick; the rotating mechanism is arranged on the derrick, and drives the bracket as a whole to rotate in a horizontal plane; the telescopic mechanism is connected to the grabbing mechanism through a telescopic arm, and drives the grabbing mechanism to perform linear motion.

[0008] Preferably, the bracket is a right-angled triangle structure, including a vertical rod, a horizontal rod and an oblique rod; the horizontal rod is horizontally arranged, one end of which points to the center of the wellhead, and is provided with a telescopic mechanism; the telescopic mechanism is connected to one end of the telescopic arm, and the other end of the telescopic arm is connected to the grasping mechanism; the vertical rod is vertically arranged, the upper end is connected to the other end of the horizontal rod, and the lower end is connected to one end of the oblique rod; the other end of the oblique rod is connected to the horizontal rod; the horizontal rod is arranged on the derrick through a rotating pin and a rotating mechanism, and the rotating mechanism drives the horizontal rod to rotate along the rotating pin in the horizontal plane, so that the grasping mechanism is close to or away from the center of the wellhead.

[0009] Preferably, the rotating mechanism comprises a rotating hydraulic cylinder, the cylinder body of the rotating hydraulic cylinder is arranged on the derrick, and the piston rod is hinged to the bracket.

[0010] Preferably, a safety limiting mechanism is provided between the support and the derrick to prevent the support from over-rotating.

[0011] Preferably, the telescopic mechanism includes a telescopic hydraulic cylinder, the cylinder body of the telescopic hydraulic cylinder is fixed on the bracket, and the piston rod is connected to the telescopic arm.

[0012] Preferably, the gripping mechanism includes a clamp head, a gear lever and a locking cylinder. The clamp head is in a U-shaped structure, with one open end pointing to the center of the wellhead and provided with a gear lever; the closed end is connected to the telescopic arm; the locking cylinder is provided on the clamp head and drives the gear lever to open or close the opening of the clamp head.

[0013] A method for storing kelly in a derrick is characterized by using the above-mentioned mechanical arm device for storage, and specifically comprising the following steps:

[0014] S1. Use the traveling block and hook to lift the swivel and kelly rod so that the kelly rod tray is higher than the mechanical arm device;

[0015] S2. Open the stopper at the opening of the clamp head, rotate the bracket so that the clamp head is facing the center of the wellhead, and extend the telescopic arm so that the clamp head is located at the center of the kelly;

[0016] S3. Close the stopper at the opening of the tongs, lower the traveling block so that the kelly tray is supported on the tongs;

[0017] S4. Untie the connection between the hook and the swivel, and operate the bracket to carry the swivel and the kelly to rotate to the side inside the derrick, avoiding the space where the traveling block and the hook run up and down along the center of the wellhead.

[0018] The beneficial effects achieved by the utility model are as follows: the utility model is particularly suitable for drilling rigs and workover rigs with small drilling floor areas, which make it difficult to set up storage locations for kelly rods and swivels, especially workover rigs without a drilling floor, and can greatly reduce labor intensity and improve operating efficiency. The utility model has the following advantages:

[0019] 1. Eliminate the rat holes of traditional drilling rigs and workover rigs, saving drilling floor area and the workload of digging rat holes;

[0020] 2. It avoids the large space restrictions on the derrick when inserting and removing the kelly rod from the rat hole, which is conducive to the miniaturization and lightweighting of the derrick structure;

[0021] 3. Light labor intensity. The rat holes for placing the kelly rods on traditional drilling rigs and workover rigs are far from the wellhead and require the cooperation of multiple people to complete. This robotic arm device is remotely controlled and can be completed by one person. In addition, for workover rigs that are not equipped with a drilling platform, there is no need to place the kelly rods and faucets on the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of the robotic arm device of the present invention;

[0023] Figure 2 It is a schematic diagram of the connection between the telescopic mechanism and the grasping mechanism;

[0024] Figure 3 This is a schematic diagram of the gripping mechanism when it is closed;

[0025] Figure 4 This is a schematic diagram of the gripping mechanism when it is open;

[0026] Figure 5 This is a top view of the kelly located at the center of the wellhead;

[0027] Figure 6 This is a top view of the kelly being moved to the side of the derrick;

[0028] Figure 7 This is the front view of the kelly located at the center of the wellhead;

[0029] Figure 8 This is a front view of the kelly being moved to the side of the derrick;

[0030] In the figure: 1. Bracket; 11. Horizontal bar; 12. Vertical bar; 13. Diagonal bar; 2. Telescopic mechanism; 21. Telescopic cylinder; 22. Telescopic arm; 3. Rotating mechanism; 4. Grasping mechanism; 41. Clamp head; 42. Gear lever; 43. Locking cylinder; 5. Derrick; 6. Water tap; 7. Safety limit mechanism; 8. Second-level platform; 10. Wellhead center; 00. Robotic arm device; 01. Kelly; 02. Kelly tray; 03. Traveling block; 04. Hook. DETAILED DESCRIPTION

[0031] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0032] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0033] like Figure 1-8 As shown, the utility model is a mechanical arm device for storing kelly rods in a derrick, comprising a telescopic mechanism 2, a rotating mechanism 3 and a grasping mechanism 4 for fixing the kelly rod 01. The telescopic mechanism 2 is fixedly arranged on a bracket 1, and the bracket 1 is hinged on the derrick 5; the rotating mechanism 3 is arranged on the derrick 5, driving the bracket 1 to rotate as a whole in a horizontal plane; the telescopic mechanism 2 is connected to the grasping mechanism 4 through a telescopic arm 22, driving the grasping mechanism 4 to perform linear motion.

[0034] In this embodiment, the bracket 1 is a right-angled triangle structure, including a vertical rod 12, a horizontal rod 11 and an oblique rod 13; the horizontal rod 11 is arranged horizontally, one end of which points to the wellhead center 10, and is provided with a telescopic mechanism 2; the telescopic mechanism 2 is connected to one end of the telescopic arm 22, and the other end of the telescopic arm 22 is connected to the grasping mechanism 4; the vertical rod 12 is arranged vertically, the upper end is connected to the other end of the horizontal rod 11, and the lower end is connected to one end of the oblique rod 13; the other end of the oblique rod 13 is connected to the horizontal rod 11; the horizontal rod 11 is arranged on the derrick 5 through a rotating pin and a rotating mechanism 3, and the rotating mechanism 3 drives the horizontal rod 11 to rotate in a horizontal plane along the rotating pin, so that the grasping mechanism 4 approaches or moves away from the wellhead center 10.

[0035] In this embodiment, the rotating mechanism 3 includes a rotating hydraulic cylinder, the cylinder body of the rotating hydraulic cylinder is arranged on the derrick 5, and the piston rod is hinged to the bracket 1.

[0036] In this embodiment, a safety limiting mechanism 7 is provided between the support 1 and the derrick 5 to prevent the support 1 from over-rotating.

[0037] In this embodiment, the telescopic mechanism 2 includes a telescopic hydraulic cylinder 21 , a cylinder body of the telescopic hydraulic cylinder 21 is fixed on the bracket 1 , and a piston rod is connected to the telescopic arm 22 .

[0038] Combine Figure 4As shown in the figure, in this embodiment, the gripping mechanism 4 includes a clamp head 41, a gear lever 42 and a locking cylinder 43. The clamp head 41 is a "U"-shaped structure, with one open end pointing to the wellhead center 10 and provided with a gear lever 42; the closed end is connected to the telescopic arm 22; the locking cylinder 43 is provided on the clamp head 41, driving the gear lever 42 to open or close the opening of the clamp head 41.

[0039] Mounted within bracket 1 is a telescopic arm 22, powered by a telescopic hydraulic cylinder 21. A gripping mechanism 4 is located at the end of arm 22, which opens and closes clamp head 41 by pushing a stopper 42 via a locking hydraulic cylinder 43. A kelly tray 02 is installed between faucet 6 and kelly 01, supporting the kelly 01 and faucet 6 on the tongs 41.

[0040] Combine Figure 5-8 As shown, a method for storing kelly rods in a derrick according to the present invention adopts the above-mentioned mechanical arm device 00 for storage, and specifically includes the following steps:

[0041] S1. Use the traveling block 03 and the hook 04 to lift the swivel 6 and the kelly 01, so that the kelly tray 02 is higher than the mechanical arm device 00;

[0042] S2. Open the stopper 42 at the opening of the clamp head 41, rotate the bracket 1 so that the clamp head 41 is facing the wellhead center 10, and extend the telescopic arm 42 so that the clamp head 41 is located at the center of the kelly 6;

[0043] S3, close the stopper 42 at the opening of the clamp head 41, lower the traveling block 03 so that the kelly tray 02 is supported on the clamp head 41;

[0044] S4. A person stands on the second-floor platform to untie the connection between the hook 04 and the swivel 6, and operates the support 1 to carry the swivel 6 and the kelly 01 to rotate to the side of the inside of the derrick, avoiding the space where the traveling block 03 and the hook 04 run up and down along the wellhead center 10.

[0045] It should be noted that the description of the above technical solutions is illustrative only. This specification may be embodied in various forms and should not be construed as limiting the technical solutions set forth herein. Rather, these descriptions are provided to ensure that the disclosure of this utility model is thorough and complete and to fully convey the scope of this specification to those skilled in the art. Furthermore, the technical solutions of this utility model are limited only by the scope of the claims.

[0046] Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments and is susceptible to numerous variations. Any simple modifications, equivalent variations, and modifications to the above embodiments based on the technical essence of the present invention shall be deemed to fall within the scope of protection of the present invention.

Claims

1. A mechanical arm device for storing kelly rods in a derrick, characterized by: It includes a telescopic mechanism, a rotating mechanism and a grabbing mechanism for fixing the kelly. The telescopic mechanism is fixedly arranged on a bracket, and the bracket is hinged on the derrick. The rotating mechanism is arranged on the derrick and drives the bracket as a whole to rotate in a horizontal plane. The telescopic mechanism is connected to the grabbing mechanism through a telescopic arm and drives the grabbing mechanism to move linearly.

2. The mechanical arm device for storing kelly rods in a derrick according to claim 1, characterized in that: The bracket is a right-angled triangle structure, including a vertical rod, a horizontal rod and an oblique rod; the horizontal rod is horizontally arranged, one end of which points to the center of the wellhead, and is provided with a telescopic mechanism; the telescopic mechanism is connected to one end of the telescopic arm, and the other end of the telescopic arm is connected to the grasping mechanism; the vertical rod is vertically arranged, the upper end is connected to the other end of the horizontal rod, and the lower end is connected to one end of the oblique rod; the other end of the oblique rod is connected to the horizontal rod; the horizontal rod is arranged on the derrick through a rotating pin and a rotating mechanism, and the rotating mechanism drives the horizontal rod to rotate along the rotating pin in the horizontal plane, so that the grasping mechanism moves closer to or away from the center of the wellhead.

3. The mechanical arm device for storing kelly rods in a derrick according to claim 1, characterized in that: The rotating mechanism comprises a rotating hydraulic cylinder, a cylinder body of the rotating hydraulic cylinder is arranged on the derrick, and a piston rod is hinged to a bracket.

4. The mechanical arm device for storing kelly rods in a derrick according to claim 1, characterized in that: A safety limiting mechanism is provided between the support and the derrick to prevent the support from over-rotating.

5. The mechanical arm device for storing kelly rods in a derrick according to claim 1, characterized in that: The telescopic mechanism comprises a telescopic hydraulic cylinder, a cylinder body of the telescopic hydraulic cylinder is fixed on a bracket, and a piston rod is connected to the telescopic arm.

6. The mechanical arm device for storing kelly rods in a derrick according to claim 1, characterized in that: The gripping mechanism includes a clamp head, a shift rod and a locking hydraulic cylinder. The clamp head has a "U"-shaped structure, with one open end pointing to the center of the wellhead and provided with a shift rod; the closed end is connected to the telescopic arm; the locking hydraulic cylinder is arranged on the clamp head and drives the shift rod to open or close the opening of the clamp head.

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