Shale gas wellhead protective cover

Abstract

The utility model discloses a shale gas wellhead protective cover, which relates to the technical field of shale gas wellhead protection, and comprises support frames and a second protective mechanism, the top ends of a plurality of support frames are provided with a first protective mechanism, the second protective mechanism is arranged between two adjacent support frames, and the second protective mechanism comprises a connecting frame. A rotating mechanism is arranged between the connecting frame and the supporting frame, and the inner wall of the connecting frame is fixedly connected with a metal net. The connecting frame and the metal net are arranged, and the connecting frame is vertically arranged between the two adjacent supporting frames, so that articles falling on the ground near the supporting frames can be blocked by the connecting frame and the metal net when rolling towards the wellhead or rebounding towards the wellhead, and the articles can be matched with the first protection mechanism; and articles are more comprehensively prevented from falling into the well, so that the protection effect of the protective cover on the well mouth is improved.

Description

Technical Field

[0001] This utility model relates to the field of shale gas wellhead protection technology, and in particular to a shale gas wellhead protective cover. Background Technology

[0002] Shale gas refers to unconventional natural gas that exists in adsorbed or free states in organic-rich mudstone and shale and their interlayers, with methane as its main component.

[0003] Shale gas extraction requires drilling. During drilling and fracturing operations, there is a risk of foreign objects falling into the well. For example, in the patent application number 202320344759.6 entitled "A Shale Gas Wellhead Protective Cover Device", a protective cover is installed at the wellhead to prevent foreign objects from hitting the wellhead directly. Instead, the foreign objects will impact the sliding plate and fall into the collection box.

[0004] However, the protective cover is open on all sides, which causes foreign objects to move or even bounce when they fall around the wellhead. As a result, foreign objects can still enter the well through the open parts of the protective cover, thus reducing the protective effect of the protective cover. Therefore, we propose a shale gas wellhead protective cover that can improve the protective effect. Utility Model Content

[0005] The purpose of this invention is to provide a shale gas wellhead protective cover to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a shale gas wellhead protective cover, comprising:

[0007] The support frame, and the top of the plurality of support frames is provided with a first protective mechanism;

[0008] The second protective mechanism is located between two adjacent support frames. The second protective mechanism includes a connecting frame, and a rotating mechanism is provided between the connecting frame and the support frame. A metal mesh is fixedly connected to the inner wall of the connecting frame.

[0009] Preferably, the rotating mechanism includes a rotating shaft, which is symmetrically and fixedly connected to the top of the connecting frame. The outer wall of the support frame has a rotating hole, and the outer wall of the rotating shaft is rotatably connected to the inner wall of the rotating hole. The outer wall of the support frame is provided with a limit mechanism.

[0010] Preferably, the limiting mechanism includes a limiting baffle, which is fixedly connected to the outer wall of the support frame and is used to limit the rotation angle of the connecting frame.

[0011] Preferably, the first protective mechanism includes a top cover, the top ends of the plurality of support frames are fixedly connected to the bottom end of the top cover, the top end of the top cover has a drop cavity, and the inside of the drop cavity is provided with a buffer mechanism.

[0012] Preferably, the buffer mechanism includes a buffer plate disposed inside the dropping cavity, a connecting block fixedly connected to the bottom end of the buffer plate, and a spring disposed between the bottom end of the connecting block and the bottom end of the inner wall of the top cover.

[0013] Preferably, a damping sleeve is fixedly connected to the bottom end of the inner wall of the top cover, a damping rod is inserted through the inner wall of the damping sleeve, the bottom end of the connecting block is fixedly connected to the top end of the damping rod, the spring is sleeved on the outside of the damping rod and the damping sleeve, and a collection mechanism is provided inside the falling object cavity.

[0014] Preferably, the collecting mechanism includes a collecting drawer, the top of the buffer plate is inclined, the front of the top cover has a slot, and the collecting drawer is movably inserted into the inner wall of the slot.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] This utility model utilizes a connecting frame and a metal mesh. The connecting frame is vertically positioned between two adjacent support frames, so that if an object falls to the ground near the support frame and rolls or bounces towards the well opening, it will be blocked by the connecting frame and the metal mesh. This works in conjunction with the first protective mechanism to more comprehensively prevent objects from falling into the well, thereby improving the protective effect of the protective cover on the well opening. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a cross-sectional view of the rotating shaft of this utility model.

[0019] Figure 3 This is a schematic diagram of the front cross-sectional structure of the top cover of this utility model.

[0020] In the diagram: 101, support frame; 201, connecting frame; 202, metal mesh; 301, rotating hole; 302, rotating shaft; 401, limiting baffle; 501, top cover; 502, dropping cavity; 601, buffer plate; 602, spring; 701, connecting block; 702, damping rod; 703, damping sleeve; 801, slot; 802, collection drawer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides, for example Figures 1-3 The shale gas wellhead protective cover shown includes a support frame 101 and a second protective mechanism. The top of the multiple support frames 101 is provided with a first protective mechanism, which includes a top cover 501. The top of the multiple support frames 101 is fixedly connected to the bottom of the top cover 501. The top of the top cover 501 has a drop cavity 502. The drop cavity 502 is provided with a buffer mechanism. Items falling directly from above the shale gas wellhead will fall directly onto the inner wall of the drop cavity 502, thus preventing items from falling directly into the drop cavity 502. Universal wheels are installed at the bottom of the support frame 101 to facilitate the movement of the entire protective cover, thereby improving the convenience of use. Wheel brakes are provided on the universal wheels to lock the universal wheels and prevent the protective cover from moving automatically, thereby improving the stability of the protective cover.

[0023] The buffer mechanism includes a buffer plate 601, which is disposed inside the falling cavity 502. A connecting block 701 is fixedly connected to the bottom end of the buffer plate 601. A spring 602 is disposed between the bottom end of the connecting block 701 and the bottom end of the inner wall of the top cover 501. A damping sleeve 703 is fixedly connected to the bottom end of the inner wall of the top cover 501. A damping rod 702 is inserted through the inner wall of the damping sleeve 703. The bottom end of the connecting block 701 is fixedly connected to the top end of the damping rod 702. The spring 602 is sleeved on the outside of the damping rod 702 and the damping sleeve 703. The inside of the falling object cavity 502 is equipped with a collection mechanism. When an object falls into the falling object cavity 502, it will impact the buffer plate 601. The buffer plate 601 can compress the spring 602, thereby buffering the impact force of the object. A rubber pad can also be attached to the top of the buffer plate 601 to reduce the sound generated when the object hits, thus preventing the workers in the well from panicking due to the loud impact. The damping rod 702 and the damping sleeve 703 prevent the buffer plate 601 from shaking too much after being impacted, thereby improving the buffer plate 601.

[0024] The collection mechanism includes a collection drawer 802, with the top of the buffer plate 601 set at an angle. The front of the top cover 501 has a slot 801. The collection drawer 802 is movably connected to the inner wall of the slot 801. Items that fall onto the top of the buffer plate 601 will slide down the slope and fall into the collection drawer 802 through the space between the buffer plate 601 and the inner wall of the drop cavity 502 for collection. The items that have fallen into the collection drawer 802 can be retrieved simply by pulling the collection drawer 802 out of the slot 801, which improves the convenience of operation.

[0025] In a preferred embodiment, the second protective mechanism is disposed between two adjacent support frames 101. The second protective mechanism includes a connecting frame 201, and a rotating mechanism is provided between the connecting frame 201 and the support frame 101. A metal mesh 202 is fixedly connected to the inner wall of the connecting frame 201. The connecting frame 201 is vertically positioned between two adjacent support frames 101, so that if an object falling to the ground near the support frame 101 rolls or bounces towards the well opening, it will be blocked by the connecting frame 201 and the metal mesh 202. This works in conjunction with the first protective mechanism to more comprehensively prevent objects from falling into the well, thereby improving the protective effect of the protective cover on the well opening. Furthermore, the metal mesh 202 has a small aperture, which can block foreign objects from passing through the metal mesh 202, but light can still pass through the metal mesh 202, preventing the protective cover from blocking light from entering the well.

[0026] The rotating mechanism includes a rotating shaft 302, which is symmetrically fixedly connected to the top of the connecting frame 201. The outer wall of the support frame 101 has a rotating hole 301. The outer wall of the rotating shaft 302 is rotatably connected to the inner wall of the rotating hole 301. The outer wall of the support frame 101 is provided with a limiting mechanism. By rotating the rotating shaft 302 within the rotating hole 301, the connecting frame 201 can rotate around the rotating shaft 302, which facilitates workers entering and exiting the well, thereby improving the ease of use of the second protective mechanism. Handles are provided on the outer wall of the metal mesh 202 and the outer wall of the collection drawer 802, which facilitates the movement of the collection drawer 802 and the rotation of the connecting frame 201. When the connecting frame 201 and the metal mesh 202 are only subjected to gravity, the connecting frame 201 will be in a vertical state between the two support frames 101, ensuring the stability of the second protective mechanism.

[0027] The limiting mechanism includes a limiting baffle 401, which is fixedly connected to the outer wall of the support frame 101. The limiting baffle 401 is used to limit the rotation angle of the connecting frame 201. By blocking the connecting frame 201 with the limiting baffle 401, the connecting frame 201 can be prevented from rotating inward, so that the connecting frame 201 can only rotate outward. This prevents the metal mesh 202 from rotating inward when it is hit by a foreign object, and thus effectively prevents foreign objects from falling into the well.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A shale gas wellhead protective cover, characterized in that, include: The support frame (101) has a first protective mechanism at its top. The second protective mechanism is located between two adjacent support frames (101). The second protective mechanism includes a connecting frame (201). A rotating mechanism is provided between the connecting frame (201) and the support frame (101). A metal mesh (202) is fixedly connected to the inner wall of the connecting frame (201).

2. The shale gas wellhead protective cover according to claim 1, characterized in that, The rotating mechanism includes a rotating shaft (302), which is symmetrically fixedly connected to the top of the connecting frame (201). The outer wall of the support frame (101) is provided with a rotating hole (301). The outer wall of the rotating shaft (302) is rotatably connected to the inner wall of the rotating hole (301). The outer wall of the support frame (101) is provided with a limit mechanism.

3. A shale gas wellhead protective cover according to claim 2, characterized in that, The limiting mechanism includes a limiting baffle (401), which is fixedly connected to the outer wall of the support frame (101) and is used to limit the rotation angle of the connecting frame (201).

4. A shale gas wellhead protective cover according to claim 1, characterized in that, The first protective mechanism includes a top cover (501), the top ends of the plurality of support frames (101) are fixedly connected to the bottom end of the top cover (501), the top end of the top cover (501) is provided with a drop cavity (502), and a buffer mechanism is provided inside the drop cavity (502).

5. A shale gas wellhead protective cover according to claim 4, characterized in that, The buffer mechanism includes a buffer plate (601), which is disposed inside the drop cavity (502). A connecting block (701) is fixedly connected to the bottom end of the buffer plate (601), and a spring (602) is disposed between the bottom end of the connecting block (701) and the bottom end of the inner wall of the top cover (501).

6. A shale gas wellhead protective cover according to claim 5, characterized in that, A damping sleeve (703) is fixedly connected to the bottom end of the inner wall of the top cover (501). A damping rod (702) is inserted through the inner wall of the damping sleeve (703). The bottom end of the connecting block (701) is fixedly connected to the top end of the damping rod (702). The spring (602) is sleeved on the outside of the damping rod (702) and the damping sleeve (703). A collection mechanism is provided inside the falling object cavity (502).

7. A shale gas wellhead protective cover according to claim 6, characterized in that, The collection mechanism includes a collection drawer (802), the top of the buffer plate (601) is inclined, the front of the top cover (501) is provided with a slot (801), and the collection drawer (802) is movably inserted into the inner wall of the slot (801).

Images