Wellhead falling object prevention device for petroleum drilling engineering

Abstract

The utility model relates to a wellhead anti-falling device for petroleum drilling engineering, which comprises a collecting net used for collecting impurities falling from the upper part of a wellhead; the first supporting assembly is used for installing the falling object preventing device on a wellhead; the protection assembly is installed at the center of the bottom of the first supporting assembly and used for covering the well mouth; the second supporting assembly is arranged at the top of the first supporting assembly, an opening is formed in the center of the second supporting assembly, and a collecting net installed on the second supporting assembly is arranged under the opening; and the multiple sets of first buffer assemblies are used for installing the collecting net on the second supporting assembly and absorbing impact force borne by the collecting net when the sundries fall into the collecting net. The wellhead is sealed through the protection assembly, and sundries are prevented from falling into the wellhead; sundries falling above the wellhead are collected through the collecting net, and the first buffering assembly is matched, so that the collecting net is prevented from being damaged due to impact of the sundries.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling technology, and in particular to a wellhead anti-falling object device for oil drilling engineering. Background Technology

[0002] Oil drilling is a systematic engineering process that uses oil drilling equipment to drill through multiple formations along a designed trajectory from the surface to the predetermined target layer (oil and gas layer or potential oil and gas layer), forming a stable channel (i.e., oil and gas well) for the fluids (water, gas, steam) required for oil and gas production or injection. During and after drilling, core sampling, logging, well logging and testing are completed to obtain various information required for exploration, development and drilling.

[0003] Debris frequently falls into the wellhead of oil drilling operations. While well covers are commonly used to seal the wellhead, conventional protective devices are ineffective. Large debris falling from a height can even damage these protective devices. Therefore, this paper proposes a wellhead anti-falling-object device for oil drilling projects. Utility Model Content

[0004] This utility model provides a wellhead anti-falling object device for oil drilling engineering, which is used to solve at least one of the above-mentioned technical problems.

[0005] This utility model provides a wellhead anti-falling object device for oil drilling engineering, comprising:

[0006] A collection net, used to collect impurities that fall from above the wellhead;

[0007] A first support assembly is used to install the anti-falling object device at the wellhead;

[0008] A protective component is installed at the bottom center of the first support component to cover the well opening;

[0009] A second support component is disposed on top of the first support component, and an opening is provided at the center of the second support component. The collection net is installed on the second support component directly below the opening.

[0010] Multiple sets of first buffer components are used to install the collection net on the second support component and absorb the impact force on the collection net when debris falls into the collection net.

[0011] In one embodiment, each set of the first buffer assembly includes a first slide rod, a first sliding sleeve, a first elastic element, and a fixing post. The fixing posts of the multiple sets of the first buffer assemblies are respectively installed on both sides below the opening. The first slide rod is vertically arranged in the inner cavity of each fixing post. The first sliding sleeve is sleeved on each first slide rod. The first elastic element is sleeved on the first slide rod below the first sliding sleeve. One end of the first elastic element is connected to the first sliding sleeve, and the other end is connected to the bottom of the inner cavity of the fixing post.

[0012] In one embodiment, a mounting bracket is provided between a plurality of first sliding sleeves, and the collection net is mounted on the mounting bracket.

[0013] In one embodiment, a second buffer assembly is further included. The second buffer assembly includes a buffer groove, a plurality of connecting blocks, a plurality of connecting rods, a second slide rod, a plurality of second sliding sleeves, and a plurality of second elastic elements. The second slide rod is installed in the mounting groove at the top of the first support assembly. A plurality of second sliding sleeves are fitted on the second slide rod. A second elastic element is fitted on the second slide rod between each second sliding sleeve and the side wall of the mounting groove. Each second sliding sleeve is hinged to one end of the connecting rod, and the other end of each connecting rod is hinged to the connecting block. A plurality of connecting blocks are disposed at the bottom of the buffer groove, and a buffer pad is also provided in the buffer groove.

[0014] In one embodiment, the protective assembly includes a protective cover, multiple manhole covers, and multiple adjusting screws. The protective cover contains multiple manhole covers, each manhole cover is rotatably connected to one end of an adjusting screw, and the other ends of the multiple adjusting screws penetrate the protective cover. The external threads of the multiple adjusting screws engage with the internal threads at the through holes of the protective cover.

[0015] In one embodiment, a plurality of limiting components are provided between the protective cover and each manhole cover. Each limiting component includes a moving rod, a sliding groove and a limiting block. One end of the moving rod is connected to the outer wall of the manhole cover, and the other end extends into the sliding groove and is provided with the limiting block. The sliding groove is arranged on the inner wall of the protective cover along the moving direction of the adjusting screw.

[0016] In one embodiment, the first support assembly includes a first mounting plate and a plurality of support columns, the top ends of which are connected to the first mounting plate.

[0017] In one embodiment, the second support component includes a plurality of third buffer components and a second mounting plate. The plurality of third buffer components are mounted on top of the first mounting plate, and the tops of the plurality of third buffer components are connected to the second mounting plate. The second mounting plate has the opening at its center.

[0018] In one embodiment, each of the third buffer components includes a column, a movable rod, and a third elastic element. The column is mounted on the top of the first mounting plate. The movable rod is disposed in the inner cavity of the column, and the upper end of the movable rod extends out of the column and is connected to the second mounting plate. The third elastic element is disposed between the lower end of the movable rod and the bottom of the inner cavity of the column.

[0019] In one embodiment, the top of the protective cover is connected to the bottom of the first mounting plate via multiple telescopic rods.

[0020] Compared with the prior art, the advantages of this utility model are that by setting up a protective component, the wellhead is sealed to prevent debris from falling into the wellhead; the collection net is used to collect debris falling from above the wellhead, preventing debris from damaging the protective component; the first buffer component, in conjunction with the collection net, prevents the collection net from being damaged by the impact of debris, and plays a buffering role against the impact force of falling debris. Attached Figure Description

[0021] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is an internal schematic diagram of the protective component of this utility model;

[0024] Figure 3 yes Figure 1 A schematic diagram of part A;

[0025] Figure 4 A schematic diagram of the position of the limiting component of this utility model;

[0026] Figure 5 yes Figure 4 A schematic diagram of Part B;

[0027] Figure label:

[0028] 1. First support assembly; 101. First mounting plate; 102. Support column; 2. Protective assembly; 201. Protective cover; 202. Manhole cover; 203. Adjusting screw; 204. Rubber pad; 3. Limiting assembly; 301. Moving rod; 302. Slide groove; 303. Limiting block; 4. Collection net; 5. First buffer assembly; 501. First sliding rod; 502. First sliding sleeve; 503. First elastic element; 504. Fixed column; 6. Second buffer assembly; 601. Buffer groove; 602. Buffer pad; 603. Connecting block; 604. Connecting rod; 605. Second sliding rod; 606. Second sliding sleeve; 607. Second elastic element; 7. Second support assembly; 701. Third buffer assembly; 7011. Column; 7012. Moving rod; 7013. Third elastic element; 702. Second mounting plate; 8. Telescopic rod. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings.

[0030] Please refer to Figures 1 to 5 This utility model provides a wellhead anti-falling object device for oil drilling engineering, including: a collection net 4, a first support component 1, a protective component 2, a second support component 7, and multiple sets of first buffer components 5. The collection net 4 is used to collect impurities falling from above the wellhead; the first support component 1 is used to install the anti-falling object device at the wellhead; the protective component 2 is installed at the bottom center of the first support component 1 to cover the wellhead; the second support component 7 is located at the top of the first support component 1, and an opening is provided at the center of the second support component 7, with the collection net 4 installed on the second support component 7 directly below the opening; the multiple sets of first buffer components 5 are used to install the collection net 4 on the second support component 7, and to absorb the impact force on the collection net 4 when impurities fall into the collection net 4.

[0031] To better implement this utility model, refer to Figure 1 In one embodiment, each set of first buffer components 5 includes a first slide rod 501, a first sliding sleeve 502, a first elastic element 503, and a fixing post 504. The fixing posts 504 of multiple sets of first buffer components 5 are respectively installed on both sides below the opening. The first slide rod 501 is vertically provided in the inner cavity of each fixing post 504. The first sliding sleeve 502 is sleeved on each first slide rod 501. The first elastic element 503 is sleeved on the first slide rod 501 below the first sliding sleeve 502. One end of the first elastic element 503 is connected to the first sliding sleeve 502, and the other end is connected to the bottom of the inner cavity of the fixing post 504. A mounting frame is provided between multiple first sliding sleeves 502, and a collection net 4 is installed on the mounting frame.

[0032] In this embodiment, the first buffer assembly 5 is provided in two sets, respectively located at the bottom of both sides of the opening on the second mounting plate 702. That is, two fixing posts 504 are respectively installed at the bottom of both sides of the opening. A square mounting frame is provided between the two first sliding sleeves 502 respectively fitted on the two first sliding rods 501 inside the two fixing posts 504. The lower end of the mounting frame is provided with a collection net 4. The square opening of the mounting frame is larger than or equal to the opening on the second mounting plate 702. When debris falls from above, it is to prevent the debris from covering the wellhead. If the protective component 2 is damaged, the collection net 4 will collect the falling debris. During the falling process, the debris will impact the collection net 4. To prevent damage to the collection net 4, the impact force of the debris will cause the collection net 4 to move downwards. The collection net 4 will then move the mounting bracket and the first sliding sleeve 502 downwards. The first sliding sleeve 502 will compress the first elastic element 503, and the elastic force of the first elastic element 503 will slow down the downward movement of the first sliding sleeve 502 until it stops moving. To ensure stable installation of the mounting bracket, four sets of the first buffer components 5 can also be provided.

[0033] To better implement this utility model, refer to Figure 1 and Figure 3 In one embodiment, the anti-falling object device further includes a second buffer assembly 6. The second buffer assembly 6 includes a buffer groove 601, a plurality of connecting blocks 603, a plurality of connecting rods 604, a second slide rod 605, a plurality of second sliding sleeves 606, and a plurality of second elastic elements 607. The second slide rod 605 is installed in the mounting groove at the top of the first support assembly 1. A plurality of second sliding sleeves 606 are fitted on the second slide rod 605. A second elastic element 607 is fitted on the second slide rod 605 between each second sliding sleeve 606 and the side wall of the mounting groove. Each second sliding sleeve 606 is hinged to one end of the connecting rod 604. The other end of each connecting rod 604 is hinged to the connecting block 603. A plurality of connecting blocks 603 are located at the bottom of the buffer groove 601. A buffer pad 602 is also provided inside the buffer groove 601. The buffer pad 602 may be made of rubber.

[0034] In this embodiment, the bottom of the buffer groove 601 is provided with two connecting blocks 603. Each connecting block 603 is hinged to one end of a connecting rod 604, and the other end of each connecting rod 604 is hinged to a second sliding sleeve 606. The two second sliding sleeves 606 are sleeved on the second sliding rod 605, and each second sliding sleeve 606 is provided with a second elastic element 607 between the side wall connecting the mounting groove and the second sliding rod 605. The second elastic elements 607 are all sleeved on the second sliding rod 605. One end of the second elastic element 607 is connected to the second sliding sleeve 606, and the other end is connected to the side wall of the mounting groove. The two ends of the second elastic element 607 may not be connected to the second sliding sleeve 606 and the side wall of the mounting groove respectively, as long as it is ensured that the second elastic element 607 can buffer the sliding of the second sliding sleeve 606 after the second sliding sleeve 606 is subjected to the pressure from the connecting rod 604 from the buffer groove 601.

[0035] To further improve the buffering effect, when the impact force of the debris falling into the collection net 4 is large, the debris will cause the collection net 4 to continue to move downwards. The first elastic element 503 can no longer provide sufficient buffering. The collection net 4 will continue to move the debris and it will fall into the buffer groove 601. At this time, the buffer groove 601 will move downwards. The movement of the buffer groove 601 will cause the two connecting blocks 603 to press the two connecting rods 604. The two connecting rods 604 will press the two second sliding sleeves 606 respectively. The two second sliding sleeves 606 will move in opposite directions along the second sliding rod 605, pressing the two second elastic elements 607 sleeved on the second sliding rod 605. The elastic force of the second elastic elements 607 will slow down the movement of the second sliding sleeves 606, thereby gradually restoring the buffer groove 601 to its original position, thus gradually dissipating the impact force of the debris.

[0036] To better implement this utility model, refer to Figure 2 In one embodiment, the protective component 2 includes a protective cover 201, a plurality of manhole covers 202, and a plurality of adjusting screws 203. The protective cover 201 houses the plurality of manhole covers 202, each manhole cover 202 being rotatably connected to one end of an adjusting screw 203. The other ends of the adjusting screws 203 penetrate the protective cover 201, and the external threads of the adjusting screws 203 engage with the internal threads at the through holes of the protective cover 201. The bottom end of the protective cover 201 is at the same height as the manhole covers 202.

[0037] In this embodiment, two manhole covers 202 are provided, which can be combined to cover the manhole opening. An arc-shaped rubber pad 204 can be provided inside the manhole cover 202. The two arc-shaped rubber pads 204 can be combined to form a circle, the diameter of which is equal to the inner diameter of the manhole opening, for further sealing of the manhole opening. The contact end of the two manhole covers 202 has no sidewall, and one end of an adjusting screw 203 is connected to the corresponding sidewall of the contact end of the two manhole covers 202. The adjusting screw 203 passes through a protective cover 201, and the external thread of the adjusting screw 203 engages with the internal thread at the through hole of the protective cover 201. Rotating the adjusting screw 203 moves the position of the manhole cover 202, ensuring that the manhole cover 202 is aligned with the manhole opening.

[0038] To better implement this utility model, refer to Figure 2 , Figure 4 and Figure 5 In one embodiment, multiple sets of limiting components 3 are provided between the protective cover 201 and each manhole cover 202. Each set of limiting components 3 includes a moving rod 301, a sliding groove 302, and a limiting block 303. One end of the moving rod 301 is connected to the outer wall of the manhole cover 202, and the other end extends into the sliding groove 302 and is provided with the limiting block 303. The sliding groove 302 is arranged on the inner wall of the protective cover 201 along the moving direction of the adjusting screw 203. Two sets of limiting components 3 are provided between the protective cover 201 and each manhole cover 202, and the two sets of limiting components 3 are symmetrically arranged with respect to the manhole cover 202. When the manhole cover 202 is rotated by the adjusting screw 203, the manhole cover 202 will drive the moving rod 301 to move along the sliding groove 302, and the limiting block 303 prevents the moving rod 301 from falling out of the sliding groove 302. The limit component 3 is designed to prevent the manhole cover 202 from rotating when the adjusting screw 203 rotates, thus ensuring that the manhole cover 202 can move smoothly.

[0039] To better implement this utility model, refer to Figure 1 In one embodiment, the first support assembly 1 includes a first mounting plate 101 and a plurality of support columns 102, the top ends of which are connected to the first mounting plate 101. In this embodiment, four support columns 102 are provided.

[0040] The bottom of the support column 102 may also be equipped with pulleys to facilitate the movement of the entire anti-falling object device. The pulleys may be equipped with locking devices. When the anti-falling object device is moved to a suitable position, the locking devices can lock the pulleys to prevent them from sliding.

[0041] To better implement this utility model, refer to Figure 1In one embodiment, the second support component 7 includes a plurality of third buffer components 701 and a second mounting plate 702. The plurality of third buffer components 701 are mounted on the top of the first mounting plate 101, and the tops of the plurality of third buffer components 701 are connected to the second mounting plate 702. The second mounting plate 702 has an opening at its center. In this embodiment, there are four third buffer components 701.

[0042] Each third buffer assembly 701 includes a column 7011, a movable rod 7012, and a third elastic element 7013. The column 7011 is mounted on the top of the first mounting plate 101. The movable rod 7012 is located inside the cavity of the column 7011, and the upper end of the movable rod 7012 extends out of the column 7011 and connects to the second mounting plate 702. The third elastic element 7013 is located between the lower end of the movable rod 7012 and the bottom of the cavity of the column 7011. One end of the third elastic element 7013 is connected to the bottom of the cavity of the column 7011, and the other end is connected to the movable rod 7012. When debris above the wellhead falls onto the second mounting plate 702, the third elastic element 7013 buffers the impact force from the debris on the second mounting plate 702. The third buffer assembly 701 can both relieve the impact force on the second mounting plate 702 and support the second mounting plate 702.

[0043] To better implement this utility model, refer to Figure 1 In one embodiment, the top of the protective cover 201 is connected to the bottom of the first mounting plate 101 via multiple telescopic rods 8. A motor drives the telescopic rods 8 to extend, causing the protective cover 201 connected to the telescopic rods 8 to gradually approach the wellhead and cover it.

[0044] In this embodiment, two telescopic rods 8 are provided. These two telescopic rods 8 can also be installed on a movable plate at the bottom of the first mounting plate 101. The movable plate can move within a groove at the bottom of the first mounting plate 101. When the wellhead needs to be covered, to ensure the well cover 202 is aligned with the wellhead, the position of the protective cover 201 can be adjusted via the movable plate. Then, the position of the well cover 202 can be further adjusted via the adjusting screw 203. Finally, the telescopic rods 8 are extended and retracted to move the well cover 202 to the wellhead for sealing. The movement of the movable plate can be adjusted manually or via a transmission assembly. The specific transmission assembly includes a screw that passes through the movable plate and is installed within a groove at the bottom of the movable mounting plate. One end of the screw is connected to the output end of a motor, which drives the screw to rotate. The external thread of the screw engages with the internal thread at the through hole of the movable plate, enabling the movable plate to move along the groove. The movable plate is embedded within the groove to prevent it from falling off.

[0045] The working principle of the wellhead anti-falling object device for oil drilling engineering described above is as follows:

[0046] The anti-falling object device is placed on the ground at the well opening. The motor drives the telescopic rod 8 to move the protective cover 201 downwards and closer to the well opening. The adjusting screw 203 is rotated to further adjust the position of the well cover 202 so that the two well covers 202 are aligned with the well opening and cover the well opening. The limiting block 303 connected to the moving rod 301 on both sides of the well cover 202 moves in the sliding groove 302, thereby cooperating with the well cover 202 to achieve movement. When debris falls from above the wellhead, the collecting net 4 collects it. The debris impacts the collecting net 4, causing it to move downwards. The collecting net 4 then moves the mounting frame and the first sliding sleeve 502 downwards. The first sliding sleeve 502 compresses the first elastic element 503, which gradually reduces the movement of the first sliding sleeve 502. When the first elastic element 503 can no longer meet the demand, the collecting net 4 will cause the debris to fall into the buffer groove 601. The buffer groove 601 provides secondary buffering and moves downwards, thereby compressing the connecting block 603 and the connecting rod 604. The connecting rod 604 drives the second sliding sleeve 606 to compress the second elastic element 607, thus preventing the buffer groove 601 from moving further downwards. The first buffer assembly 5 and the second buffer assembly 6 work together to deflect the impact force of the debris falling into the collecting net 4.

[0047] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A wellhead anti-falling object device for oil drilling engineering, characterized in that, include: A collection net, used to collect impurities that fall from above the wellhead; A first support assembly is used to install the anti-falling object device at the wellhead; A protective component is installed at the bottom center of the first support component to cover the well opening; A second support component is disposed on top of the first support component, and an opening is provided at the center of the second support component. The collection net is installed on the second support component directly below the opening. Multiple sets of first buffer components are used to install the collection net on the second support component and absorb the impact force on the collection net when debris falls into the collection net.

2. The wellhead anti-falling object device for oil drilling engineering according to claim 1, characterized in that, Each set of the first buffer assembly includes a first slide rod, a first sliding sleeve, a first elastic element, and a fixing post. The fixing posts of the multiple sets of the first buffer assemblies are respectively installed on both sides below the opening. The first slide rod is vertically arranged in the inner cavity of each fixing post. The first sliding sleeve is fitted on the first slide rod. The first elastic element is fitted on the first slide rod below the first sliding sleeve. One end of the first elastic element is connected to the first sliding sleeve, and the other end is connected to the bottom of the inner cavity of the fixing post.

3. The wellhead anti-falling object device for oil drilling engineering according to claim 2, characterized in that, A mounting bracket is provided between the plurality of first sliding sleeves, and the collection net is mounted on the mounting bracket.

4. The wellhead anti-falling object device for oil drilling engineering according to claim 1 or 3, characterized in that, It also includes a second buffer assembly, which includes a buffer groove, multiple connecting blocks, multiple connecting rods, a second slide rod, multiple second sliding sleeves, and multiple second elastic elements. The second slide rod is installed in the mounting groove at the top of the first support assembly. Multiple second sliding sleeves are fitted on the second slide rod. Each second slide sleeve is fitted on the second slide rod between the second slide rod and the side wall of the mounting groove. Each second sliding sleeve is hinged to one end of the connecting rod, and the other end of each connecting rod is hinged to the connecting block. Multiple connecting blocks are located at the bottom of the buffer groove, and a buffer pad is also provided in the buffer groove.

5. The wellhead anti-falling object device for oil drilling engineering according to claim 1, characterized in that, The protective assembly includes a protective cover, multiple manhole covers, and multiple adjusting screws. The protective cover contains multiple manhole covers, each of which is rotatably connected to one end of an adjusting screw. The other ends of the multiple adjusting screws penetrate the protective cover, and the external threads of the multiple adjusting screws engage with the internal threads at the through holes of the protective cover.

6. The wellhead anti-falling object device for oil drilling engineering according to claim 5, characterized in that, Multiple sets of limiting components are provided between the protective cover and each manhole cover. Each set of limiting components includes a moving rod, a sliding groove and a limiting block. One end of the moving rod is connected to the outer wall of the manhole cover, and the other end extends into the sliding groove and is provided with the limiting block. The sliding groove is set on the inner wall of the protective cover along the moving direction of the adjusting screw.

7. The wellhead anti-falling object device for oil drilling engineering according to claim 6, characterized in that, The first support component includes a first mounting plate and a plurality of support columns, the top ends of which are connected to the first mounting plate.

8. The wellhead anti-falling object device for oil drilling engineering according to claim 7, characterized in that, The second support component includes a plurality of third buffer components and a second mounting plate. The plurality of third buffer components are mounted on the top of the first mounting plate, and the tops of the plurality of third buffer components are connected to the second mounting plate. The second mounting plate has the opening at its center.

9. The wellhead anti-falling object device for oil drilling engineering according to claim 8, characterized in that, Each of the third buffer components includes a column, a movable rod, and a third elastic element. The column is mounted on the top of the first mounting plate. The movable rod is disposed in the inner cavity of the column, and the upper end of the movable rod extends out of the column and connects to the second mounting plate. The third elastic element is disposed between the lower end of the movable rod and the bottom of the inner cavity of the column.

10. The wellhead anti-falling object device for oil drilling engineering according to claim 7, characterized in that, The top of the protective cover is connected to the bottom of the first mounting plate via multiple telescopic rods.

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