Drilling equipment capable of preventing formation overpressure

Abstract

The utility model discloses drilling equipment capable of preventing stratum overpressure, which belongs to the technical field of drilling equipment and comprises a monitor body, a fixing frame is arranged on the back of the monitor body, a positioning bearing is arranged on the fixing frame, a worm is arranged in the positioning bearing, a worm gear is meshed with the side face of the worm, and the worm gear is meshed with the positioning bearing. And a limiting bearing is arranged in the fixed frame. According to the drilling equipment capable of preventing the stratum overpressure, a worm gear, a worm, a lead screw, a connecting nut, a connecting rod and an arc-shaped clamping plate are arranged, and under the mutual cooperation of the worm gear, the worm, the lead screw, the connecting nut, the connecting rod and the arc-shaped clamping plate, the situation that a monitor body is installed on a slurry vertical pipe through a plurality of bolts is not needed; in addition, the two arc-shaped clamping plates and the slurry vertical pipe can be limited and fixed only by controlling the rotating disc to rotate, meanwhile, under the self-locking effect of the worm gear and the worm, the reliability after installation is guaranteed, installation operation is easy and convenient, and the overall practicability is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling equipment, in particular to a drilling device for preventing formation overpressure. Background Art

[0002] Drilling equipment refers to the work of drilling holes into the ground using mechanical equipment or manpower. It usually refers to the engineering of drilling wells and large-diameter water supply wells for the exploration or development of liquid and gaseous minerals such as oil and natural gas. Drilling is widely used in national economic construction. During the drilling process, pump pressure monitors are often needed to monitor formation overpressure.

[0003] Existing pump pressure monitors are generally installed on mud risers through multiple bolts, which makes installation inconvenient for workers and has poor reliability after installation. Therefore, a drilling equipment that can prevent formation overpressure is needed to improve the above problems. Utility Model Content

[0004] In order to overcome the above defects, the utility model provides a drilling equipment for preventing formation overpressure, which solves the problem that the existing pump pressure monitor is generally installed on the mud riser by multiple bolts, which is inconvenient for workers to install and operate and has poor reliability after installation.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drilling equipment for preventing formation overpressure, comprising a monitoring instrument body, a fixing frame is provided on the back of the monitoring instrument body, a positioning bearing is provided on the fixing frame, a worm is provided in the positioning bearing, a worm wheel is meshed on the side of the worm, a limit bearing is provided in the fixing frame, a screw is provided in the limit bearing, two connecting nuts are threadedly connected to the side of the screw, a connecting rod is provided on the side of the connecting nut, and an arc-shaped clamp is provided on the other end of the connecting rod.

[0006] As a further solution of the utility model: a rotating disk is provided at the top end of the worm, and the shape of the rotating disk is set to be cylindrical.

[0007] As a further solution of the utility model: a sliding hole is overlapped on the side of the connecting rod, and the sliding hole is opened on the back side of the fixing frame.

[0008] As a further solution of the utility model: the threads at both ends of the screw rod are in opposite directions, and the worm wheel is connected to the screw rod.

[0009] As a further solution of the utility model: a non-slip cushion is arranged inside the arc-shaped clamping plate, and the shape of the connecting rod is set to be L-shaped.

[0010] As a further solution of the utility model: the side of the turntable is provided with anti-slip grooves, and the shape of the fixing frame is set to be rectangular.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The drilling equipment for preventing formation overpressure is provided with a worm gear, a worm, a screw, a connecting nut, a connecting rod and an arc-shaped clamping plate. With the cooperation of the worm gear, the worm, the screw, the connecting nut, the connecting rod and the arc-shaped clamping plate, there is no need to use multiple bolts to install the monitor body on the mud riser. In addition, only the rotation of the turntable can be controlled to realize the limit fixation of the two arc-shaped clamping plates and the mud riser. At the same time, under the self-locking effect of the worm gear and the worm, the reliability after installation is guaranteed, which not only makes the installation operation simple and convenient, but also improves the overall practicality.

[0013] 2. The drilling equipment for preventing formation overpressure is provided with anti-skid grooves and anti-skid pads. The anti-skid grooves increase the contact friction with the user, making it more convenient for the user to rotate the turntable. Meanwhile, the anti-skid pads can increase the contact friction with the mud riser and also protect the mud riser. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the arc-shaped splint of the utility model from the rear view;

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the rear cross-section of the fixing frame of the utility model;

[0017] In the figure: 1. Monitor body; 2. Fixed frame; 3. Arc-shaped clamping plate; 4. Positioning bearing; 5. Worm; 6. Turntable; 7. Anti-slip groove; 8. Connecting rod; 9. Sliding hole; 10. Anti-slip cushion; 11. Limit bearing; 12. Screw; 13. Connecting nut; 14. Worm gear. DETAILED DESCRIPTION

[0018] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0019] like Figure 1-3As shown, the utility model provides a technical solution: a drilling equipment for preventing formation overpressure, comprising a monitoring instrument body 1, a fixed frame 2 is provided on the back of the monitoring instrument body 1, the shape of the fixed frame 2 is set to be rectangular, a positioning bearing 4 is provided on the fixed frame 2, by providing the positioning bearing 4, the positioning bearing 4 supports and limits the worm 5, thereby ensuring that the worm 5 will not shake randomly during the rotation in the positioning bearing 4, a worm 5 is provided in the positioning bearing 4, a worm wheel 14 is meshed on the side of the worm 5, by providing the worm wheel 14 and the worm 5, under the mutual cooperation of the worm wheel 14 and the worm 5, the worm wheel 14 and the worm 5 are stably meshed, a limiting bearing 11 is provided in the fixed frame 2, a screw 12 is provided in the limiting bearing 11, by providing the limiting bearing 11, the limiting bearing 11 supports and limits the screw 12, thereby making the screw 12 rotate smoothly in the limiting bearing 11, and the threads at both ends of the screw 12 are in opposite directions;

[0020] The worm wheel 14 is connected to the screw rod 12, and the side of the screw rod 12 is threadedly connected with two connecting nuts 13. By setting the screw rod 12 and the connecting nut 13, the screw rod 12 supports and limits the connecting nut 13, so that the connecting nut 13 can move smoothly on the surface of the screw rod 12. A connecting rod 8 is provided on the side of the connecting nut 13. The shape of the connecting rod 8 is set to L shape. The side of the connecting rod 8 is overlapped with a sliding hole 9. By setting the sliding hole 9, the sliding hole 9 supports and limits the connecting rod 8, so that the connecting rod 8 can move smoothly. The sliding hole 9 is opened on the back of the fixed frame 2. The other end of the connecting rod 8 is provided with an arc splint 3, and an anti-skid pad 10 is provided in the arc splint 3. A turntable 6 is provided at the top of the worm 5. The shape of the turntable 6 is set to be cylindrical, and the side of the turntable 6 is provided with anti-skid patterns 7. By setting the turntable 6 and the anti-skid patterns 7, the anti-skid patterns 7 can increase the contact friction of the user on the turntable 6, and the turntable 6 makes it more convenient for the user to rotate the worm 5.

[0021] The working principle of the utility model is:

[0022] When the monitor body 1 needs to be installed, the monitor body 1 is first placed on one side of the mud riser, and the mud riser is located between the two arc-shaped clamping plates 3. Then, the turntable 6 is controlled to rotate, so that the turntable 6 drives the worm 5 to rotate. Due to the mutual meshing of the worm 5 and the worm wheel 14, the worm 5 drives the worm wheel 14 to rotate, and the worm wheel 14 drives the screw rod 12 to rotate. The threads at both ends of the screw rod 12 are in opposite directions. During the rotation of the screw rod 12, the two connecting nuts 13 are driven to move in a direction close to each other.

[0023] The two connecting nuts 13 drive the two connecting rods 8 to move toward each other, and the two connecting rods 8 drive the two arc-shaped clamping plates 3 and the two anti-skid pads 10 to move toward the mud riser until the anti-skid pads 10 are in close contact with the mud riser, thereby successfully completing the installation and fixation of the monitor body 1.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0025] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A drilling equipment for preventing formation overpressure, comprising a monitoring instrument body (1), characterized in that: A fixed frame (2) is provided on the back of the monitoring instrument body (1), a positioning bearing (4) is provided on the fixed frame (2), a worm (5) is provided in the positioning bearing (4), a worm wheel (14) is meshed on the side of the worm (5), a limit bearing (11) is provided in the fixed frame (2), a screw (12) is provided in the limit bearing (11), two connecting nuts (13) are threadedly connected to the side of the screw (12), a connecting rod (8) is provided on the side of the connecting nut (13), and an arc-shaped clamping plate (3) is provided at the other end of the connecting rod (8).

2. The drilling equipment for preventing formation overpressure according to claim 1, characterized in that: A rotating disk (6) is provided at the top end of the worm (5), and the shape of the rotating disk (6) is set to be cylindrical.

3. The drilling equipment for preventing formation overpressure according to claim 1, characterized in that: A sliding hole (9) is overlapped on the side of the connecting rod (8), and the sliding hole (9) is opened on the back side of the fixing frame (2).

4. The drilling equipment for preventing formation overpressure according to claim 1, characterized in that: The threads at both ends of the screw rod (12) are in opposite directions, and the worm wheel (14) is connected to the screw rod (12).

5. The drilling equipment for preventing formation overpressure according to claim 1, characterized in that: An anti-skid cushion (10) is provided inside the arc-shaped clamping plate (3), and the shape of the connecting rod (8) is set to be L-shaped.

6. The drilling equipment for preventing formation overpressure according to claim 2, characterized in that: The side surface of the rotating disk (6) is provided with anti-slip grooves (7), and the shape of the fixing frame (2) is set to be rectangular.

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