CN216077041U

CN216077041U - Offshore oil platform well notch safety protection cover

Info

Publication number: CN216077041U
Application number: CN202121079543.9U
Authority: CN
Inventors: 刘永勤; 张晓诚; 王晓雷; 谢涛; 霍宏博; 岳明; 林家昱; 刘静辰; 宋闯; 齐琳
Original assignee: China National Offshore Oil Corp CNOOC; CNOOC China Ltd Tianjin Branch
Current assignee: China National Offshore Oil Corp CNOOC; CNOOC China Ltd Tianjin Branch
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2022-03-18
Anticipated expiration: 2031-05-19

Abstract

The utility model discloses a well notch safety protection cover of an offshore oil platform, which comprises a base fixed outside a well notch, wherein the base is of a rectangular frame structure, and well cover covers covering the top side of the well notch are symmetrically hinged on the base; a control device for controlling the opening and closing degree of the wellhead cover is arranged between the side ends of the wellhead cover in a matched mode, symmetrical cover openings are formed in the free end of the wellhead cover, a slide way located on the inner side of the wellhead cover is fixedly arranged on the side end of each cover opening, and a first square cover lower than the upper end face of the wellhead cover is arranged on each slide way in a sliding mode; the free end of the first square cover is provided with symmetrical first connecting ports, and the top end of the first square cover is covered with a second square cover matched with the cover opening; and the free end of the second square cover is provided with symmetrical second connectors, and the second square cover is covered with a cover plate for covering the second connectors. The utility model aims to provide a well notch safety protection cover which can control the opening and closing of a well notch, is suitable for various operation conditions and prevents personnel and tools from falling.

Description

Offshore oil platform well notch safety protection cover

Technical Field

The utility model relates to the technical field of drilling operation, in particular to a safety protection cover for a well slot of an offshore oil platform.

Background

The well slot of the offshore oil platform needs to be in an open state under various working conditions such as drilling, well workover, steel wire operation and the like. The well slot is usually the same as the platform height, easily causes personnel and instrument to fall into the well slot when opening, brings the production safety risk. Therefore, there is a need for a safety protection cover for a well slot opening, which can control the opening and closing of the well slot opening, adapt to various working conditions and prevent personnel and tools from falling.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide a well notch safety protection cover which can control the opening and closing of a well notch, is suitable for various operating conditions and prevents personnel and tools from falling.

In order to achieve the purpose, the utility model is realized by the following technical scheme:

a safety protection cover for a well notch of an offshore oil platform comprises a base fixed outside the well notch, wherein the base is of a rectangular frame structure, and well openings covering the top side of the well notch are symmetrically hinged to the base; a control device for controlling the opening and closing degree of the wellhead cover is arranged between the side ends of the wellhead cover in a matched mode, symmetrical cover openings are formed in the free end of the wellhead cover, a slide way located on the inner side of the wellhead cover is fixedly arranged on the side end of each cover opening, and a first square cover lower than the upper end face of the wellhead cover is arranged on each slide way in a sliding mode; the free end of the first square cover is provided with symmetrical first connecting ports, and the top end of the first square cover is covered with a second square cover matched with the cover opening; and the free end of the second square cover is provided with symmetrical second connectors, and the second square cover is covered with a cover plate for covering the second connectors.

Further, controlling means includes the first movable railing and the second movable railing that set up between the side of well head lid, and the well head lid is fixed with the swing arm through the connecting piece in the outside of movable railing, offer on the first movable railing with the connecting piece sliding fit's on both sides swing arm top slotted hole, offer on the second movable railing with the connecting piece sliding fit's in both sides swing arm middle part slotted hole.

Furthermore, a positioning hole communicated with the side end of the manhole cover is formed in the swing arm.

Furthermore, the second square cover is provided with an L-shaped slot at the inner side of the second connector, and the bottom end of the cover plate is provided with an insertion block matched with the slot.

Further, handles are fixedly arranged on the upper end faces of the manhole cover, the second square cover and the cover plate.

Furthermore, the outer end of the first square cover is provided with a pulling plate for pulling the first square cover.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model can provide effective safety protection for wellhead operation, adapt to various operation conditions and avoid accidents of personnel injury, tool falling and equipment damage. The integral operation of the well cover is simple, the use is convenient, and only one platform needs to be equipped, so that the production operation requirement can be met.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the present invention after the first cover is opened;

FIG. 3 is a schematic structural view of the first cover of the present invention after closing;

FIG. 4 is a side view of the movable rail of the present invention;

FIG. 5 is a schematic view of the present invention in a fully closed configuration;

FIG. 6 is a schematic structural view of a second square cover and a cover plate according to the present invention;

FIG. 7 is a schematic structural diagram illustrating the first connection port being opened according to the present invention;

FIG. 8 is a schematic view of the present invention in an installed riser configuration;

FIG. 9 is a schematic view showing the structure of the second port of the present invention when it is opened;

FIG. 10 is a schematic view of the present invention in a condition where a steel wire riser is installed;

reference numerals:

the device comprises a base 1, a first movable railing 2, a second movable railing 3, a slideway 4, a first square cover 5, a connecting piece 6, a swing arm 7, a manhole cover 8, a handle 9, a cover plate 10, a second square cover 11, a positioning hole 12, a long hole groove 13, a short hole groove 14, a slot 15, an inserting block 16, a cover opening 17, a first connecting port 18, a second connecting port 19, a lifting vertical pipe 20 and a steel wire operation vertical pipe 21.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 5, the offshore oil platform well notch safety protection cover comprises a base 1 fixed outside a well notch, wherein the base 1 is of a rectangular frame structure, and well notches 8 covering the top side of the well notch are symmetrically hinged on the base 1; a control device for controlling the opening and closing degree of the manhole cover 8 is arranged between the side ends of the manhole cover 8 in a matched mode, symmetrical cover openings 17 are formed in the free end of the manhole cover 8, a slide way 4 located on the inner side of the manhole cover 8 is fixedly arranged at the side end of each cover opening 17, and a first square cover 5 lower than the upper end face of the manhole cover 8 is arranged on each slide way 4 in a sliding mode; the free end of the first square cover 5 is provided with symmetrical first connecting ports 18, and the top end of the first square cover 5 is covered with a second square cover 11 matched with the cover opening 17; and the free end of the second square cover 11 is provided with symmetrical second connecting ports 19, and the second square cover 11 is covered with a cover plate 10 covering the second connecting ports 19.

The control device comprises a first movable railing 2 and a second movable railing 3 which are arranged between side ends of a manhole cover 8, wherein the manhole cover 8 is fixedly provided with a swing arm 7 at the outer side of the movable railing through a connecting piece 6, the first movable railing 2 is provided with a long hole groove 13 in sliding fit with the connecting piece 6 at the top end of the swing arms 7 on two sides, and the second movable railing 3 is provided with a short hole groove 14 in sliding fit with the connecting piece 6 at the middle part of the swing arms 7 on two sides. Two movable railings can be through the opening and close of 8 with swing arm 7 upper junction spare 6's cooperation control well head covers to can increase or reduce the degree of opening and shutting of well head cover 8 through the length of control long hole groove 13 and short hole groove 14. The swing arm 7 is provided with a positioning hole 12 communicated with the side end of the manhole cover 8, and the positioning hole 12 in the swing arm 7 can be used for inserting a positioning pin, so that the swing arm 7 is fixed with the side end of the manhole cover 8, and the manhole cover 8 is kept in an open state.

As shown in fig. 6, the second square cover 11 is provided with an L-shaped slot 15 at the inner side of the second connection port 19, and the bottom end of the cover plate 10 is provided with an insertion block 16 matched with the slot 15, so that the second square cover 11 and the cover plate 10 can be inserted in a matching manner, and the cover plate 10 needs to be screwed when being opened to separate the insertion block 16 from the slot 15, thereby avoiding the potential safety hazard caused by the cover plate 10 being directly opened due to the influence of external force.

As shown in fig. 7 and 8, the following steps are specifically adopted for installation in the working condition of the tubular column workover treatment of the present invention:

1. before the well slot with the safety protection cover is used for pipe column workover operation, the second square cover 11 and the cover plate 10 are manually opened and moved out of the upper end of the well mouth cover 8.

2. When the wellhead equipment needs to be disassembled and assembled, the whole wellhead cover 8 is opened, and the positioning pin is inserted into the positioning hole 12 to lock the wellhead cover 8.

3. Before the lifting vertical pipe 20 is installed, the manhole cover 8 is closed, the two movable railings automatically fall down, the first square cover 5 is integrally opened to be completely withdrawn from the cover opening 17, and the lifting vertical pipe 20 is installed by utilizing an open space formed by the cover opening 17.

4. After the riser 20 is lowered and installed in place, the first square cover 5 is closed to cover the cover opening 17, so that the first square cover 5 is inserted into the gap between the flanges at the joint of the riser 20, and the first connection port 18 on the first square cover 5 is framed outside the riser 20.

As shown in fig. 9 and 10, the following steps are specifically adopted for installation in the state of the steel wire working condition of the utility model:

3. Before installing steel wire operation riser 21, close well head lid 8, two movable railings fall down automatically, and first square lid 5 is whole to be opened and to withdraw from the lip 17 completely, utilizes the open space of lip 17 formation to install steel wire operation riser 21.

4. After the steel wire operation vertical pipe 21 is lowered and installed in place, the first square cover 5 is closed to cover the cover opening 17, the second square cover 11 is covered on the upper end of the first square cover 5, and the second connecting port 19 on the second square cover 11 is framed outside the steel wire operation vertical pipe 21.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides an offshore oil platform well notch safety protection cover, is including fixing base (1) in well notch outside, its characterized in that: the base (1) is of a rectangular frame structure, and the base (1) is symmetrically hinged with well cover covers (8) covering the top sides of the well slots; a control device for controlling the opening and closing degree of the manhole cover (8) is arranged between the side ends of the manhole cover (8) in a matched mode, symmetrical cover openings (17) are formed in the free end of the manhole cover (8), a slide way (4) located on the inner side of the manhole cover (8) is fixedly arranged at the side end of each cover opening (17), and a first square cover (5) lower than the upper end face of the manhole cover (8) is arranged on each slide way (4) in a sliding mode; the free end of the first square cover (5) is provided with symmetrical first connecting ports (18), and the top end of the first square cover (5) is covered with a second square cover (11) matched with the cover opening (17); and the free end of the second square cover (11) is provided with a symmetrical second connecting port (19), and the second square cover (11) is covered with a cover plate (10) covering the second connecting port (19).

2. The offshore oil platform well slot safety cover of claim 1, wherein: controlling means includes first activity railing (2) and second activity railing (3) that set up between the side of well head lid (8), and well head lid (8) are fixed with swing arm (7) through connecting piece (6) in the outside of activity railing, offer on first activity railing (2) with connecting piece (6) sliding fit's on both sides swing arm (7) top slotted hole (13), offer on second activity railing (3) with connecting piece (6) sliding fit's in both sides swing arm (7) middle part slotted hole (14).

3. The offshore oil platform well slot safety cover of claim 2, wherein: and the swing arm (7) is provided with a positioning hole (12) communicated with the side end of the manhole cover (8).

4. The offshore oil platform well slot safety cover of claim 1, wherein: the second square cover (11) is provided with an L-shaped slot (15) on the inner side of the second connecting port (19), and the bottom end of the cover plate (10) is provided with an inserting block (16) matched with the slot (15).

5. The offshore oil platform well slot safety cover of claim 1, wherein: handles (9) are fixedly arranged on the upper end surfaces of the manhole cover (8), the second square cover (11) and the cover plate (10).

6. The offshore oil platform well slot safety cover of claim 1, wherein: the outer end of the first square cover (5) is provided with a pulling plate for pulling the first square cover (5).