Safety protection device for oil exploitation

Abstract

The safety protection device comprises an annular cover body with the diameter larger than that of a wellhead, a notch penetrating through the side wall of the annular cover body is formed in the annular cover body in the radial direction, an opening and closing door is arranged at the position of the notch, an elastic shaft sleeve is arranged on the inner ring of the annular cover body, the elastic shaft sleeve is an annular body with an opening in one side, and the opening and closing door is arranged on the opening and closing door. And the opening direction is consistent with the direction of the notch on the annular cover body. The device comprises an annular cover body with the diameter larger than that of a wellhead, the wellhead can be completely covered through the design, and personnel, instruments and the like are effectively prevented from falling. The safety of wellhead operation is remarkably improved. The annular cover body is provided with a notch and an opening and closing door, and mounting and dismounting are convenient. Due to the design, when a drilling tool needs to be replaced or other wellhead operations need to be carried out, the cover body can be rapidly opened and closed, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to an oil extraction device, in particular to a safety protection device for oil extraction. Background Technique

[0002] In oil drilling operations, wellhead safety protection is of crucial importance. There are mainly two existing forms of wellhead protection devices: one is fixed wellhead protection, similar to a manhole cover, which is stable but heavy in quality and cumbersome to disassemble when frequently replacing drill pipes; the other is a simple cover plate made of thin steel plates, which is convenient to disassemble, but due to its simple structure and single function, its structural strength is often insufficient, posing a safety hazard. Therefore, developing a wellhead safety protection device that is both easy to install and disassemble and has sufficient structural strength has become an urgent problem to be solved in the oil drilling industry. Content of the Utility Model

[0003] In order to overcome the shortcomings existing in the above background technique, the purpose of the utility model is to provide a safety protection device for oil extraction.

[0004] Technical Solution: A safety protection device for oil extraction includes an annular cover body with a diameter larger than the wellhead diameter. The annular cover body is formed with a notch penetrating its side wall in the radial direction. An opening and closing door is provided at the notch. An elastic shaft sleeve is provided on the inner circle of the annular cover body. The elastic shaft sleeve is an annular body with one side open, and the opening direction is the same as the notch direction on the annular cover body.

[0005] In addition, particularly preferably, the outer circle of the elastic shaft sleeve is connected to the inner circle of the annular cover body through evenly arranged tension springs.

[0006] In addition, particularly preferably, a plurality of rollers are evenly provided on the inner circle of the elastic shaft sleeve, and the axis of the rollers is parallel to the axis of the elastic shaft sleeve.

[0007] In addition, particularly preferably, the opening and closing door includes a door body in a fan shape and a handle movably arranged on the top wall of the door body. Cavities for accommodating the door body are respectively provided on both sides of the notch of the annular cover body. The door body can be pulled to open or close the notch; a groove in the shape of is provided on the annular cover body for accommodating the handle, and the handle is embedded in the groove in the folded state.

[0008] In addition, particularly preferably, a pull ring is provided on the top wall of the annular cover body.

[0009] In addition, particularly preferably, it further includes reinforcing ribs, and the reinforcing ribs are evenly arranged at the bottom of the annular cover body.

[0010] In addition, particularly preferably, it further includes a limiting ring, and the limiting ring is arranged at the bottom of the annular cover body, and the radius of the limiting ring is smaller than the wellhead radius.

[0011] In addition, it is particularly preferred that the limiting ring includes a plurality of arc-shaped units arranged in a ring shape. The arc-shaped unit includes an arc-shaped baffle, a straight arm, a guide rail, and a pre-tightening screw. The straight arm is arranged in the radial direction of the annular cover body. The outer end of the straight arm is connected to the inner ring of the arc-shaped baffle. The guide rail is arranged at the bottom of the annular cover body and is slidably matched with the straight arm. The pre-tightening screw penetrates the annular cover body from top to bottom. The straight arm is provided with a threaded hole adapted to the pre-tightening screw. The top of the annular cover body is provided with a stepped slotted hole, and the direction of the slotted hole is parallel to the setting direction of the straight arm.

[0012] 1. The device includes an annular cover body with a diameter larger than the diameter of the wellhead. This design can completely cover the wellhead and effectively prevent personnel, instruments, etc. from falling. It significantly improves the safety of wellhead operations. The annular cover body is provided with a notch and an opening / closing door, which is convenient for installation and disassembly. This design enables the cover body to be quickly opened and closed when it is necessary to replace the drill pipe or perform other wellhead operations, improving the work efficiency.

[0013] 2. An elastic bushing is provided on the inner circle of the device and is connected to the inner circle of the annular cover body through a tension spring. This structure can effectively offset the impact and vibration of the drill pipe or the slip on the annular cover body, enhancing the stability and durability of the device.

[0014] 3. By providing rollers on the inner circle of the elastic bushing, the wear of the inner circle of the bushing by the drill pipe or the slip is reduced, extending the service life of the device.

[0015] 4. The opening / closing door of the device is opened and closed by a pulling method, and the handle can be folded. It is convenient to use and does not interfere with the staff walking on the annular cover body, improving the safety of the operation.

[0016] 5. A pull ring is provided on the top wall of the annular cover body of the device, which is convenient for installing and disassembling the protection device, further improving the convenience of the operation.

[0017] 6. The device also includes a reinforcing rib and a limiting ring, which respectively enhance the strength and stability of the annular cover body, prevent the cover body from shaking, and provide a more stable guarantee for wellhead operations.

[0018] 7. The limiting ring of the device is composed of a plurality of arc-shaped units, and the pre-tightening screw can be adjusted to adapt to wellheads of different sizes, improving the versatility and flexibility of the device.

[0019] In summary, the safety protection device for oil extraction provided by the utility model patent significantly improves the safety and convenience of wellhead operations through a series of innovative designs, while extending the service life of the device, bringing substantial technological progress to the oil drilling industry. Description of the Drawings

[0020] Figure 1Schematic perspective view of the first embodiment of the present utility model.

[0021] Figure 2 Schematic view of the structure of the first embodiment of the present utility model from the bottom view.

[0022] Figure 3 Schematic view of the structure of the second embodiment of the present utility model from the bottom view.

[0023] Figure 4 Schematic perspective view of the second embodiment of the present utility model.

[0024] Figure 5 Schematic view of the structure of the arc unit of the second embodiment of the present utility model.

[0025] Among them, the above-mentioned drawings include the following reference numerals: 1, annular cover body; 11, notch; 12, cavity; 13, groove; 14, slotted hole; 2, opening and closing door; 21, door body; 22, handle; 3, elastic bushing; 31, tension spring; 32, roller; 4, pull ring; 5, reinforcing rib; 6, limiting ring; 61, arc unit; 611, arc baffle; 612, straight arm; 613, guide rail; 614, pre-tightening screw. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment 1

[0028] As Figure 1The safety protection device for oil extraction shown in the figure is not only structurally stable, but also easy to install and disassemble, effectively improving the safety of wellhead operations. The device includes an annular cover body 1. A pull ring 4 is provided on the top wall of the annular cover body 1, which facilitates the installation and disassembly of the protection device. The diameter of the annular cover body 1 is larger than the diameter of the wellhead. The annular cover body 1 has a notch 11 penetrating its side wall in the radial direction. Along this notch 11, the annular cover body 1 can be sleeved on the drill pipe and cover the wellhead. An elastic bushing 3 is provided on the inner ring of the annular cover body 1. The elastic bushing 3 is a replacement structure with one side open, and the opening direction is the same as the direction of the notch 11 on the annular cover body 1. The outer ring of the elastic bushing 3 is connected to the inner ring of the annular cover body 1 by evenly arranged tension springs 31. This structure can effectively offset the impact and vibration of the drill pipe or the slip on the annular cover body, enhancing the stability and durability of the device. In a preferred manner, a plurality of rollers 32 are evenly provided on the inner ring of the elastic bushing 3, and the axis of the roller 32 is parallel to the axis of the elastic bushing 3. By providing rollers on the inner ring of the elastic bushing, the wear of the inner ring of the drill pipe or the slip on the inner ring of the bushing is reduced, and the service life of the device is extended.

[0029] In addition, an opening and closing door 2 is provided at the notch 11. The opening and closing door 2 can be installed in a flipping form or a sliding form. In this embodiment, the sliding form is taken as an example. For details, refer to Figure 1 and Figure 2 , where the opening and closing door 2 includes a door body 21 in a fan shape and a grip 22 movably arranged on the top wall of the door body 21. Cavities 12 for accommodating the door body 21 are respectively provided on both sides of the notch 11 of the annular cover body 1. The door body 21 can be pulled out to open or close the notch 11. A groove 13 for accommodating the grip 22 is provided on the annular cover body 1. The grip 22 is hinged to the annular cover body 1 through a pin shaft. The grip 22 can be folded and stored, and the grip 22 is embedded in the groove 13 in the folded state. By opening and closing in a pulling manner and the grip being foldable, it is convenient to use and does not interfere with the staff walking on the annular cover body, improving the safety of operations.

[0030] In addition to using a circular shape, the annular cover body 1 can also use a square or other shapes as long as it can cover the wellhead. To enhance the strength of the annular cover body 1, reinforcing ribs 5 are evenly provided at the bottom of the annular cover body 1. In addition, there is a limiting ring 6 at the bottom of the annular cover body 1. The limiting ring 6 extends in a direction away from the annular cover body 1, and the radius of the limiting ring 6 is smaller than the radius of the wellhead. By setting the reinforcing ribs, the strength and stability of the annular cover body are enhanced. By setting the limiting ring, the shaking of the cover body is prevented, providing a more stable guarantee for wellhead operations.

[0031] Embodiment 2

[0032] This embodiment is substantially the same as Embodiment 1, except for the structure of the limiting ring 6. In this embodiment, for details, refer to Figures 3 - 5As shown in the figure, the limit ring 6 includes a plurality of arc-shaped units 61 arranged in a ring shape. The arc-shaped unit 61 includes an arc-shaped baffle 611, a straight arm 612, a guide rail 613, and a pre-tightening screw 614. The straight arm 612 is arranged in the radial direction of the annular cover body 1. The outer end of the straight arm 612 is connected to the inner ring of the arc-shaped baffle 611. The guide rail 613 is arranged at the bottom of the annular cover body 1 and is slidably matched with the straight arm 612. The pre-tightening screw 614 penetrates through the annular cover body 1 from top to bottom. A screw hole adapted to the pre-tightening screw 614 is provided on the straight arm 612. A stepped slotted hole 14 is provided at the top of the annular cover body 1. The direction of the slotted hole 14 is parallel to the straight arm 612. The diameter of the limit ring 6 in this embodiment can be adjusted adaptively. By adjusting the pre-tightening screw 614, it can be adapted to wellheads of different sizes, improving the versatility and flexibility of the device.

[0033] During use, first adjust the pre-tightening screw 614 to a position close to the center of the annular cover body 1. At this time, the diameter of the structure of the limit ring 6 is the smallest. After installing the device on the wellhead, then move the pre-tightening screw 614 away from the center position so that the arc-shaped baffle 611 is attached to the inner wall of the inlet, and then lock the pre-tightening screw 614 to complete the installation.

[0034] The above-described embodiments only represent the preferred embodiments of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations, improvements, and substitutions can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. A safety protection device for oil mining, characterized in that: The invention comprises an annular cover body (1) whose diameter is larger than the diameter of the wellhead, wherein the annular cover body (1) is formed with a notch (11) penetrating its side wall in the radial direction, and an opening and closing door (2) is arranged at the notch (11), and an elastic sleeve (3) is arranged on the inner ring of the annular cover body (1), and the elastic sleeve (3) is an annular body with an opening on one side, and the opening direction thereof is consistent with the direction of the notch (11) on the annular cover body (1).

2. The safety protection device for oil mining according to claim 1 is characterized in that: The outer ring of the elastic sleeve (3) is connected to the inner ring of the annular cover body (1) via uniformly arranged tension springs (31).

3. The safety protection device for oil mining according to claim 1 or 2, characterized in that: The inner ring of the elastic sleeve (3) is evenly provided with a plurality of rollers (32), and the axes of the rollers (32) are parallel to the axis of the elastic sleeve (3).

4. The safety protection device for oil mining according to claim 3 is characterized in that: The opening and closing door (2) comprises a door body (21) in a fan-shaped shape, and a handle (22) movably arranged on the top wall of the door body (21); cavities (12) for accommodating the door body (21) are respectively arranged on both sides of the notch (11) of the annular cover body (1); and the notch (11) can be opened or closed by pulling the door body (21); A shaped groove (13) for accommodating a handle (22) is provided on the annular cover body (1), and the handle (22) is embedded in the shaped groove (13) in a folded state.

5. The safety protection device for oil mining according to claim 1 is characterized in that: The top wall of the annular cover body (1) is provided with a pull ring (4).

6. The safety protection device for oil mining according to claim 4 is characterized in that: It also includes reinforcing ribs (5), which are evenly arranged on the bottom of the annular cover body (1).

7. The safety protection device for oil mining according to claim 4 is characterized in that: It also comprises a limiting ring (6), wherein the limiting ring (6) is arranged at the bottom of the annular cover body (1), and the radius of the limiting ring (6) is smaller than the wellhead radius.

8. The safety protection device for oil mining according to claim 7 is characterized in that: The limiting ring (6) comprises a plurality of arc units (61) arranged in an annular shape. The arc unit (61) comprises an arc baffle (611), a straight arm (612), a guide rail (613) and a pre-tightening screw (614). The straight arm (612) is arranged along the radial direction of the annular cover body (1). The outer end of the straight arm (612) is connected to the inner circle of the arc baffle (611). The guide rail (613) is arranged at the bottom of the annular cover body (1) and is slidably matched with the straight arm (612). The pre-tightening screw (614) passes through the annular cover body (1) from top to bottom. The straight arm (612) is provided with a screw hole adapted to the pre-tightening screw (614). The top of the annular cover body (1) is provided with a stepped straight hole (14). The direction of the straight hole (14) is parallel to the setting direction of the straight arm (612).

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