Wellhead operating platform

Abstract

The utility model relates to the technical field of wellhead blowout preventer installation assistance, in particular to a wellhead operation platform which comprises a ladder-shaped suspension mechanism and an operation platform body. According to the utility model, the ladder-shaped suspension mechanism mounted on the drilling machine turntable girder or the drill floor girder is used as the main frame, and the operation platform is mounted, so that the blowout preventer can be mounted in a square well, and the formed wellhead operation platform can move to a derrick base along with the drilling machine turntable girder or the drill floor girder without influencing the hoisting, dismounting and throwing operations of the blowout preventer; compared with a temporary operation platform erected on the ground, the temporary operation platform does not need to be disassembled and can be used repeatedly after being erected at a time, and therefore the working efficiency can be improved; compared with a temporary operation platform, the well mouth operation platform which is used for a long time is made of better materials, the structure is more stable, and safety can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of wellhead blowout preventer installation assistance, and particularly relates to a wellhead operation platform. Background Art

[0002] During the drilling construction of "high-pressure, high-temperature, and high-sulfur" oil and gas wells, in order to prevent blowout or effectively implement well killing under the overflow state, the structure of the wellhead blowout preventer group required in the construction design is usually relatively complex.

[0003] When installing the blowout preventer in the square well during each drilling section, it is time-consuming and laborious to tighten the connecting bolts. There is a relatively high risk of knocking and tightening the connecting bolts of the blowout preventer at high altitudes. The usual practice is to manually build an operation platform to facilitate the operators to tighten the bolts; however, for each installation of a single blowout preventer, an operation platform needs to be built once. The wellhead blowout preventer group of "high-pressure, high-temperature, and high-sulfur" oil and gas wells is composed of 4 - 5 single blowout preventers connected together. During the installation period, 4 - 5 operation platforms for tightening the blowout preventer need to be built. The operation platforms for tightening the blowout preventer manually built temporarily are difficult to meet the standard requirements, and the safety is very low. Multiple building and dismantling take a long time, seriously affecting the work efficiency. Therefore, the utility model provides a wellhead operation platform. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the defects existing in the prior art and propose a wellhead operation platform.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The wellhead operation platform includes:

[0007] A "ladder"-shaped suspension mechanism, there are 2N of the "ladder"-shaped suspension mechanisms, N is a positive integer greater than 1, and each of the "ladder"-shaped suspension mechanisms is installed on the rotary table girder or the drill floor girder of the drilling rig through a connecting piece;

[0008] An operation platform, two of the "ladder"-shaped suspension mechanisms form a group, the two "ladder"-shaped suspension mechanisms in the same group are distributed in parallel at intervals, and each group of "ladder"-shaped suspension mechanisms is installed with an operation platform.

[0009] As a further description of the above technical scheme:

[0010] The N is 4 or 5.

[0011] As a further description of the above technical scheme:

[0012] The connecting piece is fixedly welded to the rotary table girder or the drill floor girder of the drilling rig, and the top end of the connecting piece is movably connected to the "ladder"-shaped suspension mechanism through a pin shaft.

[0013] As a further description of the above technical scheme:

[0014] The operation platform includes:

[0015] A frame, both ends of the frame are provided with second cross frames, and the second cross frames are detachably and fixedly installed with the first cross frame of the "ladder"-type suspension mechanism through connecting components;

[0016] Railings, the bottom of the railings is fixedly connected to one side of the frame, and a platform board is fixedly connected to the top of the frame. A platform kick board is fixedly connected to the side of the railings and near the bottom.

[0017] As a further description of the above technical solution:

[0018] The connecting components include:

[0019] A first ear seat and a second ear seat. The tops of the first ear seat and the second ear seat are both fixedly connected to the bottom of the second cross frame. The first ear seat and the second ear seat are both clamped on the outside of the first cross frame. A first pin shaft is fixedly installed on the side of the first ear seat and below the first cross frame. A second pin shaft is fixedly installed on the side of the second ear seat and below the first cross frame;

[0020] A first limiting block and a second limiting block. The bottoms of the first limiting block and the second limiting block are both provided with inclined surfaces. The first limiting block is located inside the first ear seat, and below the first cross frame and above the first pin shaft. The second limiting block is located inside the second ear seat, and below the first cross frame and above the second pin shaft. A first threaded rod is fixedly connected to the side of the first limiting block facing the second limiting block. A second threaded rod is fixedly connected to the side of the second limiting block facing the first limiting block. A threaded sleeve is threadedly installed between the first threaded rod and the second threaded rod.

[0021] As a further description of the above technical solution:

[0022] The bottoms of the first ear seat and the second ear seat are both provided with wide mouth parts.

[0023] As a further description of the above technical solution:

[0024] The bottom of the first cross frame is fixedly connected with a first stop block and a second stop block. The first stop block is located inside the first limiting block, and the second stop block is located inside the second limiting block.

[0025] As a further description of the above technical solution:

[0026] A second rubber pad is fixedly connected to one side of the first stop block, and a first rubber pad is fixedly connected to one side of the second stop block.

[0027] The utility model has the following beneficial effects:

[0028] 1. Compared with the prior art, for this wellhead operation platform, by using the "ladder"-type suspension mechanism installed on the rotary table girder or the drill floor girder of the drilling rig as the main frame and installing the operation platform, it can be used for installing the blowout preventer in the square well, and the formed wellhead operation platform (the "ladder"-type suspension mechanism and the operation platform) can move to the derrick base along with the rotary table girder or the drill floor girder of the drilling rig, without affecting the hoisting and dismantling operations of the blowout preventer. Compared with the temporary operation platform erected on the ground, it does not need to be disassembled and can be used multiple times after being erected once, thus improving work efficiency; compared with the temporary operation platform, the long-term used wellhead operation platform has better materials, more stable structure, and its safety can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a three-dimensional schematic diagram of the wellhead operation platform proposed by the present utility model;

[0030] Figure 2 is Figure 1 the enlarged view at A in

[0031] Figure 3 is a front view of the wellhead operation platform proposed by the present utility model;

[0032] Figure 4 is a side view of the wellhead operation platform proposed by the present utility model;

[0033] Figure 5 is a three-dimensional schematic diagram of the connection component of the wellhead operation platform proposed by the present utility model;

[0034] Figure 6 is a cross-sectional view of the connection component of the wellhead operation platform proposed by the present utility model.

[0035] LEGEND DESCRIPTION:

[0036] 1. "Ladder"-type suspension mechanism; 101. First cross frame; 2. Connecting piece; 3. Operation platform; 301. Frame; 301b. Second cross frame; 302. Rail; 303. Platform kick plate; 304. Platform board; 305. First ear seat; 306. First limiting block; 307. Second limiting block; 308. First threaded rod; 309. Second threaded rod; 3010. First pin shaft; 3011. Second ear seat; 3012. Second pin shaft; 3013. Threaded sleeve; 3014. First stop block; 3015. Second stop block; 3016. First rubber pad; 3017. Second rubber pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] Referring to Figures 1-6 , the wellhead operation platform provided by the present utility model includes: a "ladder"-type suspension mechanism 1 and an operation platform 3.

[0038] There are 2N "ladder"-type suspension mechanisms 1, where N is a positive integer greater than 1. Each "ladder"-type suspension mechanism 1 is installed on the rotary table girder or the drill floor girder of the drilling rig through a connecting member 2. Each "ladder"-type suspension mechanism 1 uses two connecting members 2. Two "ladder"-type suspension mechanisms 1 form a group, and the two "ladder"-type suspension mechanisms 1 in the same group are distributed in parallel at intervals. An operating platform 3 is installed on each group of "ladder"-type suspension mechanisms 1.

[0039] During use, the operator stands on the operating platform 3 to complete the installation, disassembly, and fastening operations of the blowout preventer.

[0040] Generally, the wellhead operating platform composed of two "ladder"-type suspension mechanisms 1 and one operating platform 3 needs to be set up in 4 or 5 groups, which is specifically determined by the number of single blowout preventers in the blowout preventer group at the wellhead of the "three-high" oil and gas well, and it is necessary to ensure that the construction personnel can operate all the single blowout preventers on the wellhead operating platform.

[0041] In one embodiment, the connecting member 2 is fixedly welded to the rotary table girder or the drill floor girder of the drilling rig. The connecting member 2 is movably connected to the top end of the "ladder"-type suspension mechanism 1 through a pin shaft, and the "ladder"-type suspension mechanism 1 is in a suspended state.

[0042] In one embodiment, the operating platform 3 includes:

[0043] A frame 301. Both ends of the frame 301 have second cross beams 301b, and the second cross beams 301b are detachably and fixedly installed on the first cross beam 101 of the "ladder"-type suspension mechanism 1 through a connecting component;

[0044] A railing 302. The bottom of the railing 302 is fixedly connected to one side of the frame 301, and a platform board 304 is fixedly connected to the top of the frame 301. A platform kick board 303 is fixedly connected to the side of the railing 302 and near the bottom.

[0045] In one embodiment, the connecting component includes: a first ear seat 305, a second ear seat 3011, a first limiting block 306, and a second limiting block 307.

[0046] The tops of the first ear seat 305 and the second ear seat 3011 are both fixedly connected to the bottom of the second cross frame 301b. The first ear seat 305 and the second ear seat 3011 are both clamped on the outside of the first cross frame 101. A first pin shaft 3010 is fixedly installed on the side of the first ear seat 305 and below the first cross frame 101. A second pin shaft 3012 is fixedly installed on the side of the second ear seat 3011 and below the first cross frame 101. Inclined surfaces are provided at the bottoms of the first limiting block 306 and the second limiting block 307. The first limiting block 306 is located inside the first ear seat 305, below the first cross frame 101 and above the first pin shaft 3010. The second limiting block 307 is located inside the second ear seat 3011, below the first cross frame 101 and above the second pin shaft 3012. A first threaded rod 308 is fixedly connected to the side of the first limiting block 306 facing the second limiting block 307. A second threaded rod 309 is fixedly connected to the side of the second limiting block 307 facing the first limiting block 306. A threaded sleeve 3013 is threadedly installed between the first threaded rod 308 and the second threaded rod 309.

[0047] Directly clamp the first ear seat 305 and the second ear seat 3011 on the first cross frame 101, then install the first pin shaft 3010 and the second pin shaft 3012 correspondingly. Finally, clamp the first limiting block 306 and the second limiting block 307 on the outside of the first ear seat 305 and the second ear seat 3011 from both sides, and align the threaded sleeve 3013 so that the threaded sleeve 3013 is aligned with the ends of the first threaded rod 308 and the second threaded rod 309. Rotate the threaded sleeve 3013, which will pull the first threaded rod 308 and the second threaded rod 309 to move towards the middle, so that the first limiting block 306 abuts below the first cross frame 101 and above the first pin shaft 3010, and the second limiting block 307 abuts below the first cross frame 101 and above the second pin shaft 3012, realizing the fixation of the first ear seat 305, the second ear seat 3011 and the first cross frame 101.

[0048] In one embodiment, wide mouth parts are provided at the bottoms of the first ear seat 305 and the second ear seat 3011 to facilitate clamping the first ear seat 305 and the second ear seat 3011 on the first cross frame 101.

[0049] In one embodiment, a first stop block 3014 and a second stop block 3015 are fixedly connected to the bottom of the first cross frame 101. The first stop block 3014 is located inside the first limiting block 306, and the second stop block 3015 is located inside the second limiting block 307. The first stop block 3014 and the second stop block 3015 are used to limit the first limiting block 306 and the second limiting block 307 as a whole to slide relative to the first cross frame 101, ensuring the stability of the first ear seat 305, the second ear seat 3011 and the first cross frame 101.

[0050] In one embodiment, a second rubber pad 3017 is fixedly connected to one side of the first stopper 3014, and a first rubber pad 3016 is fixedly connected to one side of the second stopper 3015. Both the first rubber pad 3016 and the second rubber pad 3017 serve the purpose of anti-collision.

[0051] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Wellhead operating platform, characterized in that: include: A "ladder" type suspension mechanism (1), wherein the "ladder" type suspension mechanism (1) has 2N, N∈ a positive integer greater than 1, and each of the "ladder" type suspension mechanisms (1) is mounted on a drilling rig turntable beam or a drilling platform beam via a connecting member (2); An operating platform (3), two of the "ladder" type suspension mechanisms (1) form a group, the two "ladder" type suspension mechanisms (1) in the same group are arranged in parallel and spaced apart, and each group of "ladder" type suspension mechanisms (1) is equipped with an operating platform (3).

2. The wellhead operating platform according to claim 1, characterized in that: The N is 4 or 5.

3. The wellhead operating platform according to claim 1, characterized in that: The connecting piece (2) is welded and fixed to the drilling rig turntable beam or the drilling platform beam, and the connecting piece (2) is movably connected to the top end of the "ladder" type suspension mechanism (1) via a pin shaft.

4. The wellhead operating platform according to claim 1, characterized in that: The operating platform (3) comprises: A frame (301), wherein both ends of the frame (301) are provided with a second cross frame (301b), and the second cross frame (301b) is detachably fixedly mounted to the first cross frame (101) of the "ladder" type suspension mechanism (1) via a connecting assembly; A handrail (302), wherein the bottom of the handrail (302) is fixedly connected to one side of the frame (301), and the top of the frame (301) is fixedly connected to a platform board (304), and the side of the handrail (302) and near the bottom is fixedly connected to a platform skirting board (303).

5. The wellhead operating platform according to claim 4, characterized in that: The connection component comprises: A first ear seat (305) and a second ear seat (3011), wherein the tops of the first ear seat (305) and the second ear seat (3011) are fixedly connected to the bottom of the second horizontal frame (301b), the first ear seat (305) and the second ear seat (3011) are clamped on the outside of the first horizontal frame (101), a first pin shaft (3010) is fixedly installed on the side of the first ear seat (305) and located below the first horizontal frame (101), and a second pin shaft (3012) is fixedly installed on the side of the second ear seat (3011) and located below the first horizontal frame (101); A first limiting block (306) and a second limiting block (307), wherein the bottoms of the first limiting block (306) and the second limiting block (307) are both provided with inclined surfaces, the first limiting block (306) is located on the inner side of the first ear seat (305), below the first cross frame (101) and above the first pin shaft (3010), the second limiting block (307) is located on the inner side of the second ear seat (3011), below the first cross frame (101) and above the second pin shaft (3012), a first threaded rod (308) is fixedly connected to a side of the first limiting block (306) facing the second limiting block (307), a second threaded rod (309) is fixedly connected to a side of the second limiting block (307) facing the first limiting block (306), and a threaded sleeve (3013) is threadedly installed between the first threaded rod (308) and the second threaded rod (309).

6. The wellhead operating platform according to claim 5, characterized in that: The bottoms of the first ear seat (305) and the second ear seat (3011) are both provided with wide mouths.

7. The wellhead operating platform according to claim 5, characterized in that: A first stopper (3014) and a second stopper (3015) are fixedly connected to the bottom of the first horizontal frame (101); the first stopper (3014) is located on the inner side of the first limiting block (306), and the second stopper (3015) is located on the inner side of the second limiting block (307).

8. The wellhead operating platform according to claim 7, characterized in that: One side of the first stopper (3014) is fixedly connected to a second rubber pad (3017), and one side of the second stopper (3015) is fixedly connected to a first rubber pad (3016).

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