Mechanical thrust balancer

Abstract

The utility model discloses a mechanical thrust balancer which comprises a barrel body, a sleeve is fixedly embedded in the left end of the barrel body, a drill column is connected to the inner wall of the sleeve in a sliding mode, a first piston plate is arranged in the barrel body, the outer surface of the first piston plate makes contact with the inner wall of the barrel body, and a second piston plate is arranged in the barrel body. Through the design of the connecting pipe, hydraulic oil can be conveniently injected into the cylinder body during use, then the second piston plate can conveniently push the reset spring to contract according to the change of the pressure of the hydraulic oil, and at the moment, through the design of the reset spring, the change of the hydraulic pressure can be conveniently sensed; the reset spring can correspondingly adjust the compression or stretching state of the reset spring, so that the rigidity or pre-pressure of the reset spring is changed, meanwhile, by means of the design of the first piston plate and the drill column, power can be conveniently transmitted to the drill bit, uneven movement of the drill column can be reduced, and meanwhile stable drilling of the drill bit can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drilling, in particular to a mechanical thrust balancer. BACKGROUND

[0002] Drilling is a key activity in the process of oil and gas exploration and development, which involves drilling a vertical or inclined hole on the ground surface to reach the rock layer that may contain oil and gas. The drilling process is complex and requires the cooperation of various technologies and equipment.

[0003] At present, in the drilling process, the drill string is usually used to drive the drill bit to move, but the drill string is not uniform in movement during use, and the drill string affects the stability of the drill bit, which is not conducive to the current use and needs to be improved. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a mechanical thrust balancer to solve the problems in the above background technology.

[0005] The application embodiment adopts the following technical scheme:

[0006] The mechanical thrust balancer comprises a cylinder, a sleeve is fixedly embedded at the left end of the cylinder, a drill string is slidably connected to the inner wall of the sleeve, a first piston plate is arranged in the cylinder, the outer surface of the first piston plate is in contact with the inner wall of the cylinder, a second piston plate is arranged in the cylinder, the outer surface of the second piston plate is in contact with the inner wall of the cylinder, a group of return springs are arranged at the left side of the second piston plate, the left end of each return spring is fixedly connected to the right side of the first piston plate, the right end of each return spring is fixedly connected to the left side of the second piston plate, the right end of the drill string is fixedly connected to the left side of the first piston plate, a connecting pipe is arranged at the right side of the cylinder, the left end of the connecting pipe is fixedly communicated with the right end of the cylinder, a drill bit is arranged at the left side of the cylinder, and the drill string is matched with the sleeve.

[0007] Preferably, a sealing ring is arranged in the cylinder, the sealing ring is located at the right side of the second piston plate, the left side of the sealing ring is fixedly connected to the right side of the second piston plate, and the outer surface of the sealing ring is in contact with the inner wall of the cylinder.

[0008] Preferably, a warning sign is arranged above the cylinder, and the bottom surface of the warning sign is fixedly connected to the outer surface of the cylinder.

[0009] Preferably, a fastener is fixedly connected to the left end of the drill string, a connecting piece is fixedly connected to the right side of the drill bit, and the connecting piece is matched with the fastener.

[0010] Preferably, a protective cap is arranged at the left side of the drill bit, and the protective cap is made of rubber material.

[0011] Preferably, the front of the barrel is provided with a model label, the back of the model label is fixedly connected with the outer surface of the barrel.

[0012] The above-mentioned at least one technical scheme adopted by the embodiment of the present application can achieve the following beneficial effects:

[0013] Through the design of the connecting pipe, the hydraulic oil can be injected into the barrel during use, and then the second piston plate can be pushed to contract the reset spring according to the change of the hydraulic oil pressure. At this time, through the design of the reset spring, the change of the hydraulic pressure can be sensed, and when the drilling fluid pressure changes, the reset spring will adjust its compression or extension state accordingly, so as to change the stiffness or pre-pressure of the reset spring. Meanwhile, through the design of the first piston plate and the drill string, power can be transmitted to the drill bit, so that the uneven movement of the drill string can be reduced, and stable drilling of the drill bit can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings, which are included to provide a further understanding of the present application, form a part of the present application and help to explain the present application and its prior art. The illustrative embodiments of the present application and their descriptions serve to explain the present application without forming an improper limitation on the present application. In the drawings:

[0015] Figure 1 is a schematic diagram of the overall three-dimensional structure of the present application;

[0016] Figure 2 is a schematic diagram of the three-dimensional structure of the barrel top view of the present application;

[0017] Figure 3 is a sectional view of the barrel front view of the present application;

[0018] Figure 4 is a schematic diagram of the three-dimensional structure of the first piston plate front view of the present application.

[0019] In the drawings: 1, connecting piece; 2, fastener; 3, model label; 4, connecting pipe; 5, warning sign; 6, barrel; 7, drill string; 8, drill bit; 9, protective cap; 10, sleeve; 11, sealing ring; 12, second piston plate; 13, reset spring; 14, first piston plate. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] The technical scheme provided by the embodiments of the present application is described in detail below with reference to the drawings.

[0022] Please refer to Figures 1-4 The utility model provides mechanical push balance technology scheme:

[0023] Mechanical push balance, including cylinder 6, the left end of cylinder 6 is fixedly embedded with sleeve 10, the inner wall of sleeve 10 is slidably connected with drill string 7, the inside of cylinder 6 is equipped with first piston plate 14, the outer surface of first piston plate 14 is in contact with the inner wall of cylinder 6, the inside of cylinder 6 is equipped with second piston plate 12, the outer surface of second piston plate 12 is in contact with the inner wall of cylinder 6, the left side of second piston plate 12 is equipped with a group of return springs 13, the left end of each return spring 13 is fixedly connected with the right side of first piston plate 14, the right end of each return spring 13 is fixedly connected with the left side of second piston plate 12, the right end of drill string 7 is fixedly connected with the left side of first piston plate 14, the right side of cylinder 6 is equipped with connecting pipe 4, the left end of connecting pipe 4 is fixedly communicated with the right end of cylinder 6, the left side of cylinder 6 is equipped with drill bit 8, drill string 7 is matched with sleeve 10;Specifically, by the design of connecting pipe 4, it is convenient to inject hydraulic oil into the inside of cylinder 6, then according to the change of hydraulic oil pressure, it is convenient for second piston plate 12 to push return spring 13 to contract, at this time, according to the design of return spring 13, it is convenient to be used to induct the change of hydraulic pressure, when the drilling hydraulic pressure changes, return spring 13 will adjust its compression or extension state accordingly, so as to change the stiffness or pre-pressure of return spring 13, at the same time, by the design of first piston plate 14 and drill string 7, it is convenient to transmit power to drill bit 8, in combination with the above-mentioned cooperation, so as to reduce the uneven movement of drill string 7, and the stable drilling of drill bit 8 can be realized simultaneously;

[0024] In the embodiment, the inside of cylinder 6 is equipped with sealing ring 11, sealing ring 11 is located at the right side of second piston plate 12, the left side of sealing ring 11 is fixedly connected with the right side of second piston plate 12, the outer surface of sealing ring 11 is in contact with the inner wall of cylinder 6;The upper portion of cylinder 6 is equipped with warning sign 5, the bottom surface of warning sign 5 is fixedly connected with the outer surface of cylinder 6;The left end of drill string 7 is fixedly connected with fastener 2, the right side of drill bit 8 is fixedly connected with connecting piece 1, connecting piece 1 is matched with fastener 2;Specifically, sealing ring 11 is used to play the role of sealing, warning sign 5 is used to prompt the matters needing attention of workers, through the cooperation of fastener 2 and connecting piece 1, drill bit 8 and drill string 7 are connected;

[0025] In the embodiment, the left side of the drill bit 8 is provided with a protective cap 9, the material of the protective cap 9 is rubber material; the front of the barrel 6 is provided with a model label 3, the back of the model label 3 is fixedly connected with the outer surface of the barrel 6; specifically, the protective cap 9 is convenient for protecting the drill bit 8, and the model label 3 is convenient for the staff to understand the model of the device.

[0026] Working principle: when the mechanical thrust balancer is used, the user first makes the drill bit 8 drive the connecting piece 1 to approach the fastener 2, and makes the connecting piece 1 and the fastener 2 be threadedly connected, so that the connection of the drill bit 8 and the drill string 7 is completed, then makes the connecting pipe 4 communicate with the hydraulic assembly, and injects hydraulic oil into the inside of the barrel 6 through the connecting pipe 4, at this time the second piston plate 12 is subjected to the thrust force, can pressurize the reset spring 13, and adjusts the change of the hydraulic pressure by using the reset spring 13, at the same time, through the cooperation of the first piston plate 14 and the drill string 7, the power can be transmitted to the drill bit 8.

[0027] The above only describes the embodiments of the present application and is not used to limit the present application. The present application can have various changes and variations for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. Mechanical thrust balancer comprising a barrel (6), characterized in that: The left end of the barrel (6) is fixedly embedded with a sleeve (10), the inner wall of the sleeve (10) is slidably connected with a drill string (7), the inside of the barrel (6) is provided with a first piston plate (14), the outer surface of the first piston plate (14) is in contact with the inner wall of the barrel (6), the inside of the barrel (6) is provided with a second piston plate (12), the outer surface of the second piston plate (12) is in contact with the inner wall of the barrel (6), the left side of the second piston plate (12) is provided with a group of return springs (13), the left end of each return spring (13) is fixedly connected with the right side of the first piston plate (14), the right end of each return spring (13) is fixedly connected with the left side of the second piston plate (12), the right end of the drill string (7) is fixedly connected with the left side of the first piston plate (14), the right side of the barrel (6) is provided with a connecting pipe (4), the left end of the connecting pipe (4) is fixedly communicated with the right end of the barrel (6), the left side of the barrel (6) is provided with a drill bit (8), the drill string (7) is matched with the sleeve (10).

2. The mechanical thrust balancer of claim 1, wherein: The inside of the barrel (6) is provided with a sealing ring (11), the sealing ring (11) is located on the right side of the second piston plate (12), the left side of the sealing ring (11) is fixedly connected with the right side of the second piston plate (12), and the outer surface of the sealing ring (11) is in contact with the inner wall of the barrel (6).

3. The mechanical thrust balancer of claim 1, wherein: The upper side of the barrel (6) is provided with a warning sign (5), and the bottom surface of the warning sign (5) is fixedly connected with the outer surface of the barrel (6).

4. The mechanical thrust balancer of claim 1, wherein: The left end of the drill string (7) is fixedly connected with a fastener (2), the right side of the drill bit (8) is fixedly connected with a connecting piece (1), and the connecting piece (1) is matched with the fastener (2).

5. The mechanical thrust balancer of claim 1, wherein: The left side of the drill bit (8) is provided with a protective cap (9), and the material of the protective cap (9) is rubber material.

6. The mechanical thrust balancer of claim 1, wherein: The front of the barrel (6) is provided with a model label (3), and the back of the model label (3) is fixedly connected with the outer surface of the barrel (6). The front of the barrel (6) is provided with a model label (3), and the back of the model label (3) is fixedly connected with the outer surface of the barrel (6).

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