Underground sidewall contact device

Abstract

The underground sidewall contact device comprises a shell, square open holes are evenly formed in the periphery of the surface of the shell, an upper cover body is fixedly installed on the top face of the shell, the upper cover body can be fixedly connected with a drill rod, a lower cover body is fixedly installed on the bottom face of the shell, and the lower cover body can be fixedly connected with drill bit equipment. Supporting rods are fixedly installed on the two sides of the inner wall of the upper cover body, a first metal rod is rotationally connected between the two supporting rods, a pushing assembly is arranged on the inner wall of the shell, and the pushing assembly can provide pushing force for drill bit equipment underground. The utility model aims to solve the problems that the thrust is not enough and the efficiency is reduced when drilling is carried out through the gravity of a drill rod and a drill bit. The technical effect that thrust is provided for drill bit equipment under the well through the pushing assembly is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pusher equipment, in particular to a downhole pusher. Background Art

[0002] Oil well drilling is a method of exploring for oil and natural gas by digging a hole in the ground and drilling holes in it to obtain underground oil and gas resources. Oil well drilling usually uses a rotating drill bit and drill pipe, starting from the surface and gradually drilling underground along a predetermined path. Oil well drilling is usually divided into two stages: exploration and production. In the exploration stage, the drilling team will select a suitable location based on the results of geological exploration and start drilling the wellbore to understand the underground geology and oil reserves. Once a potential oil and gas reserve area is found, it will enter the production stage, injecting high-pressure liquid or gas to make the oil and gas flow out of the wellbore and collect it on the ground for treatment and processing.

[0003] When the drill bit is drilling, a pusher is often set at the connection with the drill rod to ensure that the drill bit sinks stably during drilling and avoid the drill bit shaking and colliding with the well wall during drilling. However, most of the existing drill bits drill holes through the gravity of the drill rod and the drill bit itself, but this easily leads to the problem of reduced efficiency of the drill bit due to insufficient thrust during mining. Moreover, as the drill rod continues to lengthen, the drill bit can only be replaced by hoisting it through the drilling tower on the surface, which increases the workload of the drilling tower.

[0004] In view of this, we propose a downhole pusher. Utility Model Content

[0005] Therefore, the purpose of the utility model is to provide a downhole pusher to solve the above problems in the prior art.

[0006] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] According to the first aspect of the utility model, it includes a shell, square openings are evenly opened around the surface of the shell, an upper cover body is fixedly installed on the top surface of the shell, and the upper cover body can be fixedly connected to the drill pipe, and a lower cover body is fixedly installed on the bottom surface of the shell, and the lower cover body can be fixedly connected to the drill bit equipment, support rods are fixedly installed on both sides of the inner wall of the upper cover body, a metal rod is rotatably connected between the two support rods, and the inner wall of the shell is provided with a pushing assembly, and the pushing assembly can provide thrust to the drill bit equipment underground.

[0008] Furthermore, the pushing assembly includes a motor and a hydraulic cylinder. The motor is fixedly mounted on the inner wall of the upper cover body. Gear 1 is fixedly mounted on the output end of the motor. Gear 2 is fixedly mounted on the surface center of the metal rod 1, and gear 2 is meshed with gear 1.

[0009] Furthermore, gear three is provided on both sides of gear two, gear three is fixedly mounted on the surface of metal rod one, a connecting rod is provided on one side of gear three, a rotating shaft seat one is provided on one side of the connecting rod, and the connecting rod and the rotating shaft seat one are both rotatably connected to metal rod one.

[0010] Furthermore, the inner side of the rotating shaft seat 1 is rotatably connected to a support arm 1, one end of the support arm 1 is rotatably connected to a connecting plate, the other end of the connecting plate is rotatably connected to a support arm 2, a wheel axle is fixedly installed on one side of the surface of the connecting plate, and a roller 1 is rotatably connected to the inner wall of the wheel axle.

[0011] Furthermore, the hydraulic cylinder is fixedly mounted on the inner wall of the lower cover body, a circular plate is fixedly mounted on the output end of the hydraulic cylinder, a rotating shaft seat 2 is evenly fixedly mounted on the top circumference of the circular plate, and the number of the rotating shaft seats 2 is four.

[0012] Furthermore, the two support arms 2 are arranged on opposite sides of the top surface of the circular plate, and the support arms 2 are rotatably connected to the rotating shaft seat 2. Support arms 3 are arranged on the other two sides of the top surface of the circular plate, and the support arms 3 are rotatably connected to the rotating shaft seat 2.

[0013] Furthermore, one end of the support arm three is rotatably connected to a metal rod two, one end surface of the metal rod two is fixedly connected to a roller two, and the other end surface of the metal rod two is fixedly connected to a gear four.

[0014] Furthermore, one end of the connecting rod away from the metal rod one is rotationally connected to the metal rod two, and the gear four is connected to the gear three through a belt drive.

[0015] The utility model has the following advantages: the utility model can provide thrust to the drill bit equipment underground through the pushing component, push the circular plate through the hydraulic cylinder, slide the roller one and the roller two outward, so that the roller one and the roller two are in contact with the well wall, at this time, the motor drives the gear one to rotate, so that the gear three can drive the gear four to rotate together, so that the roller two can rotate, thereby providing a certain thrust, and when the drill bit is replaced, the reverse rotation of the roller two can assist the drill bit and the drill rod to slide out of the well, thereby reducing the workload of the drilling tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a downhole pusher of the utility model;

[0017] Figure 2This is a schematic diagram of the internal structure of a downhole pusher of the utility model;

[0018] Figure 3 This is a structural schematic diagram of a roller of a pushing assembly of a downhole pushing device of the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the structure of the roller 2 of the pushing and leaning assembly of the underground pushing and leaning device.

[0020] In the figure: 11, shell, 12, upper cover, 121, motor, 122, gear one, 13, support rod, 131, hydraulic cylinder, 14, metal rod one, 21, gear two, 22, gear three, 23, connecting rod, 24, shaft seat one, 241, support arm one, 25, connecting plate, 251, axle, 252, roller one, 253, support arm two, 26, circular plate, 261, shaft seat two, 27, support arm three, 271, metal rod two, 28, roller two, 29, gear four, 30, lower cover. DETAILED DESCRIPTION

[0021] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part 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.

[0022] Example 1

[0023] like Figure 1-Figure 2 As shown, a downhole pusher in the embodiment of the first aspect of the utility model comprises a shell 11, the surface of the shell 11 is evenly provided with square openings around, an upper cover 12 is fixedly installed on the top surface of the shell 11, the upper cover 12 can be fixedly connected to the drill pipe, a lower cover 30 is fixedly installed on the bottom surface of the shell 11, the lower cover 30 can be fixedly connected to the drill bit equipment, support rods 13 are fixedly installed on both sides of the inner wall of the upper cover 12, a metal rod 14 is rotatably connected between the two support rods 13, and a push assembly is provided on the inner wall of the shell 11, and the push assembly can provide thrust to the drill bit equipment in the well;

[0024] In the above embodiment, it should be noted that the metal rod 14 can rotate on the inner wall of the support rod 13, and after the drill bit equipment is fixedly connected to the lower cover body 30 and the drill rod is fixedly connected to the upper cover body 12, the pushing assembly can provide thrust when the drill bit equipment is drilling.

[0025] Example 2

[0026] like Figure 2-Figure 4 As shown, a downhole pusher in the embodiment of the first aspect of the utility model includes all the contents of embodiment 1. In addition, the pushing assembly includes a motor 121 and a hydraulic cylinder 131. The motor 121 is fixedly mounted on the inner wall of the upper cover body 12. A gear 122 is fixedly mounted on the output end of the motor 121. A gear 21 is fixedly mounted on the surface center of the metal rod 14. The gear 21 meshes with the gear 122. Gears 3 22 are provided on both sides of the gear 21. The gear 3 22 is fixedly mounted on the surface of the metal rod 14. A connecting rod 23 is provided on one side of the gear 3 22. A rotating shaft seat 24 is provided on one side of the connecting rod 23. The connecting rod 23 and the rotating shaft seat 24 both rotate with the metal rod 14. The inner side of the rotating shaft seat 1 24 is rotatably connected with a support arm 1 241, one end of the support arm 1 241 is rotatably connected with a connecting plate 25, and the other end of the connecting plate 25 is rotatably connected with a support arm 2 253, a wheel axle 251 is fixedly installed on one side of the surface of the connecting plate 25, and a roller 1 252 is rotatably connected to the inner wall of the wheel axle 251, the hydraulic cylinder 131 is fixedly installed on the inner wall of the lower cover body 30, and a circular plate 26 is fixedly installed on the output end of the hydraulic cylinder 131, and a rotating shaft seat 261 is evenly fixedly installed on the top surface circumference of the circular plate 26, and the number of the rotating shaft seat 261 is four, and two support arms 253 are arranged on opposite sides of the top surface of the circular plate 26, and the support arm 253 is rotatably connected with the rotating shaft seat 261;

[0027] In the above embodiment, it should be noted that both gear 122 and gear 21 are umbrella-shaped teeth, so that the motor 121 and the metal rod 14 can be transmitted vertically. When the motor 121 drives the gear 1 122 to rotate, it can drive the gear 2 21 and the gear 3 22 to rotate together. When the hydraulic cylinder 131 lifts the circular plate 26, it can drive the support arm 1 241 and the support arm 253 to rotate, so that the wheel axle 251 can be pushed outward, so that the roller 1 252 can extend from the square opening on the surface of the shell 11, so that the roller 1 252 can be against the well wall.

[0028] Example 3

[0029] like Figure 2-Figure 4As shown, a downhole pusher in the embodiment of the first aspect of the utility model includes all the contents of embodiment 2. In addition, two other sides of the top surface of the circular plate 26 are provided with support arms 3 27, and the support arms 3 27 are rotatably connected to the rotating shaft seat 2 261. One end of the support arm 3 27 is rotatably connected to a metal rod 271, and one end surface of the metal rod 271 is fixedly connected to a roller 28, and the other end surface of the metal rod 271 is fixedly connected to a gear 4 29, and the end of the connecting rod 23 away from the metal rod 14 is rotatably connected to the metal rod 271, and the gear 4 29 is connected to the gear 3 22 through a belt drive.

[0030] In the above embodiment, it should be noted that when the hydraulic cylinder 131 lifts the circular plate 26, it can drive the support arm three 27 and the connecting rod 23 to rotate, so that the roller two 28 can be pushed outward, so that the roller two 28 can extend from the square opening of the shell 11. At this time, when the motor 121 drives the gear three 22 to rotate, it can drive the gear four 29 to rotate together through the belt, so that the roller two 28 can be rotated by the motor 121.

[0031] The use process of the utility model is as follows. Those skilled in the art will, when it is necessary to push against the pusher, start the hydraulic cylinder 131. When the hydraulic cylinder 131 lifts the circular plate 26, it can drive the support arm 1 241 and the support arm 2 253 to rotate, so that the wheel axle 251 can be pushed outward, so that the roller 1 252 can extend from the square opening on the surface of the shell 11, and at the same time, it can drive the support arm 3 27 and the connecting rod 23 to rotate, so that the roller 2 28 can be pushed outward, so that the roller 2 28 can extend from the square opening of the shell 11. At this time, the motor 121 is started. When the motor 121 drives the gear 1 122 to rotate, it can drive the gear 2 21 and the gear 3 22 to rotate together, and drive the gear 4 29 to rotate together through the belt, so that the roller 2 28 can be rotated by the motor 121, thereby achieving the effect of providing thrust.

[0032] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A downhole pusher, comprising a shell (11), wherein the surface of the shell (11) is uniformly provided with square openings around the periphery, an upper cover (12) is fixedly mounted on the top surface of the shell (11), and the upper cover (12) can be fixedly connected to a drill pipe, a lower cover (30) is fixedly mounted on the bottom surface of the shell (11), and the lower cover (30) can be fixedly connected to a drill bit device, support rods (13) are fixedly mounted on both sides of the inner wall of the upper cover (12), and a metal rod (14) is rotatably connected between the two support rods (13), characterized in that: The inner wall of the housing (11) is provided with a pushing assembly, and the pushing assembly can provide thrust to the drill bit equipment underground.

2. A downhole pusher according to claim 1, characterized in that: The pushing assembly comprises a motor (121) and a hydraulic cylinder (131); the motor (121) is fixedly mounted on the inner wall of the upper cover body (12); a gear 1 (122) is fixedly mounted on the output end of the motor (121); a gear 2 (21) is fixedly mounted on the center of the surface of the metal rod 1 (14); the gear 2 (21) is meshed with the gear 1 (122).

3. A downhole pusher according to claim 2, characterized in that: Gear three (22) is provided on both sides of gear two (21), and gear three (22) is fixedly mounted on the surface of metal rod one (14). A connecting rod (23) is provided on one side of gear three (22), and a rotating shaft seat one (24) is provided on one side of the connecting rod (23). Both the connecting rod (23) and the rotating shaft seat one (24) are rotatably connected to metal rod one (14).

4. A downhole pusher according to claim 3, characterized in that: The inner side of the rotating shaft seat 1 (24) is rotatably connected to a support arm 1 (241); one end of the support arm 1 (241) is rotatably connected to a connecting plate (25); the other end of the connecting plate (25) is rotatably connected to a support arm 2 (253); a wheel axle (251) is fixedly mounted on one side of the surface of the connecting plate (25); and a roller 1 (252) is rotatably connected to the inner wall of the wheel axle (251).

5. A downhole pusher according to claim 4, characterized in that: The hydraulic cylinder (131) is fixedly mounted on the inner wall of the lower cover body (30); a circular plate (26) is fixedly mounted on the output end of the hydraulic cylinder (131); rotating shaft seats (261) are evenly fixedly mounted on the top surface of the circular plate (26); and the number of rotating shaft seats (261) is four.

6. A downhole pusher according to claim 5, characterized in that: The two second support arms (253) are arranged on two opposite sides of the top surface of the circular plate (26), and the second support arm (253) is rotatably connected to the second rotating shaft seat (261). The other two sides of the top surface of the circular plate (26) are each provided with a third support arm (27), and the third support arm (27) is rotatably connected to the second rotating shaft seat (261).

7. A downhole pusher according to claim 6, characterized in that: One end of the support arm three (27) is rotatably connected to the metal rod two (271), one end surface of the metal rod two (271) is fixedly connected to the roller two (28), and the other end surface of the metal rod two (271) is fixedly connected to the gear four (29).

8. A downhole pusher according to claim 7, characterized in that: One end of the connecting rod (23) away from the metal rod one (14) is rotationally connected to the metal rod two (271), and the gear four (29) is connected to the gear three (22) via a belt drive.

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