CN216471971U

CN216471971U - Movable wellhead lifting device

Info

Publication number: CN216471971U
Application number: CN202122830797.6U
Authority: CN
Inventors: 杨斌; 唐倩雯; 付增; 罗文莉
Original assignee: China Petroleum and Chemical Corp; Sinopec Research Institute of Petroleum Engineering Shengli Co
Current assignee: China Petroleum and Chemical Corp; Sinopec Research Institute of Petroleum Engineering Shengli Co
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-05-10
Anticipated expiration: 2031-11-18

Abstract

The utility model relates to the technical field of petroleum and natural gas industry, in particular to a movable wellhead lifting device which comprises a vehicle body unit, a suspension arm unit and a driving unit, wherein the suspension arm unit is of a ladder type structure, one side of the vehicle body unit is rotatably connected with the suspension arm unit, the upper part of the vehicle body unit is fixedly connected with the driving unit, the driving unit is provided with a first driving motor, a second driving motor, a hinged rope and a lifting hook, one end of the hinged rope is wound and connected with the second driving motor, the other end of the hinged rope bypasses the top of the suspension arm unit and is fixedly connected with the lifting hook, the lifting hook is aligned with a wellhead, and the lower part of the lifting hook is connected with a blowout prevention pipe string hook.

Description

Movable wellhead lifting device

Technical Field

The utility model relates to the technical field of petroleum and natural gas industry, in particular to a movable wellhead lifting device.

Background

In cable logging, perforation and steel wire well testing, the wellhead blowout-prevention pipe string is used for controlling wellhead pressure and providing a pressure transition area and a containing space for a logging instrument string, and the wellhead blowout-prevention pipe string usually comprises a blowout-prevention box, a catcher, a blowout-prevention pipe, a blowout preventer and the like. The specific composition of the blowout-preventing pipe string is also different according to parameters such as wellhead pressure, length of a logging instrument and the like according to the overall height, and how to safely and reliably lift the blowout-preventing pipe string with the height of several meters to be installed on a wellhead for construction operation is one of the problems in energy conservation and efficiency improvement of various large oil fields at present.

At present, the traditional operation mode adopts large-tonnage hoisting equipment, after the connection of the whole blowout preventer string is completed on the ground, the hoisting equipment is utilized to hoist the whole blowout preventer string to complete the aligned installation of a well head, but the traditional hoisting mode also has the following problems: the hoisting equipment has high use and maintenance cost and low working efficiency; after the blowout-preventing pipe string is lifted, the connection with a wellhead cannot be accurately positioned, and the installation is difficult; in the process of hoisting a blowout-preventing pipe string of several meters, the blowout-preventing pipe string has larger bending deformation, and has larger influence on the sealing safety of a blowout-preventing pipe string connection area and the service life of the whole pipe string. At present, the lubricator lifting device with the tripod structure uses a wellhead as a stressed fulcrum, basically, the whole tripod is manually arranged at an expected position, but in the specific installation process, the top center point of the tripod and the wellhead position cannot be on the same straight line, manual adjustment is often needed, and the efficiency is low.

Application number is CN200820108820.2 discloses test well lubricator hoist device, including well head fixed part, manual capstan winch, the flexible support arm of L type, wire rope and guide pulley, well head fixed part is connected with the flexible support arm of L type, manual capstan winch is connected with the flexible support arm of L type, wire rope arranges respectively in on guide pulley and the manual capstan winch, the device lifts the lubricator through manual capstan winch, however the device has several drawbacks, one is unable adjustment prevents the alignment position of blowout prevention pipe cluster and well head, another is, prevent that the blowout prevention pipe cluster is general heavier, lift through manual capstan winch is difficult.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a movable wellhead lifting device aiming at the defects in the prior art.

The technical scheme of the utility model is as follows:

the utility model provides a portable well head lifting device, includes automobile body unit, davit unit and drive unit, the davit unit is ladder formula structure, one side of automobile body unit with the davit unit rotate connect and upper portion with drive unit fixed connection, drive unit is provided with first driving motor, second driving motor, hinge rope and lifting hook, the one end of hinge rope with second driving motor twines to be connected and the other end is walked around the top of davit unit with lifting hook fixed connection, the lifting hook aligns and the lower part with the well head and prevents that the blowout control pipe cluster is connected with the couple.

Preferably, the boom unit comprises a rotating roller, two first booms and two second booms, one end of each first boom is rotatably connected with one side of the vehicle body unit, the other end of each first boom is connected with the rotating roller, each second boom is rotatably connected with the first boom through the rotating roller, and the rotating roller spans above the wellhead and is in contact connection with the hinge rope.

Preferably, a fixed connecting piece and a lifting connecting piece are arranged between the two first suspension arms, and the lifting connecting piece is parallel to the rotating roller.

Preferably, the automobile body unit includes frame, wheel and guide roll, the guide roll with the top of frame is rotated and is connected and with the live-rollers is parallel, first driving motor fixed set up in the winding has the hinge rope on the top of frame and the drive shaft, the other end of hinge rope is walked around the guide roll with lift connecting piece fixed connection, first driving motor, hinge rope and the cooperation of lifting the connecting piece constitute the well head and aim at the structure.

Preferably, the second driving motor be provided with three and all fixed set up in the top of frame, every all twine the hinge rope that has different length in driving motor's the drive shaft, three the hinge rope all walks around in proper order guide roll and live-rollers and with correspond lifting hook fixed connection.

Preferably, supporting legs are arranged at four corners of the frame, and the supporting legs are of a hydraulic telescopic structure and are matched with the frame to form a vehicle body fixing structure.

Preferably, the fixed connecting piece is of an X-shaped structure and is matched with the first suspension arms on two sides to form a first suspension arm stabilizing structure.

Preferably, the wheels are detachably connected with the frame.

Compared with the prior art, the utility model has the following advantages:

the device has the advantages that through the unique structural design, the whole device can be quickly spread and expanded at the wellhead, the device is simple to manufacture and low in cost, the installation and subsequent maintenance of the blowout preventer string are facilitated, the operation is simple, and the working efficiency can be improved. According to the utility model, through the matching of the plurality of groups of driving assemblies and the plurality of groups of steering wheels, after the blowout prevention pipe string is lifted, the connection between the blowout prevention pipe string and a wellhead can be well positioned, and the whole blowout prevention pipe string and the wellhead are convenient to install.

Drawings

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

in the figure: 1-a vehicle body unit, 2-a suspension arm unit and 3-a driving unit;

11-a frame, 12-supporting feet, 13-wheels and 14-guide rollers;

21-a first boom, 22-a fixed link, 23-a lifting link, 24-a turning roll, 25-a second boom;

31-first drive motor, 32-hinge rope, 33-second drive motor, 34-hook.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the utility model. That is, in some embodiments of the utility model, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

Example one

Referring to fig. 1, a mobile wellhead lifting device comprises a body unit 1, a boom unit 2 and a driving unit 3, wherein the boom unit 2 is of a ladder-type structure, one side of the body unit 1 is rotatably connected with the boom unit 2, the upper part of the body unit is fixedly connected with the driving unit 3, the driving unit 3 is provided with a first driving motor 31, a second driving motor 33, a hinge rope 32 and a hook 34, one end of the hinge rope 32 is wound and connected with the second driving motor 33, the other end of the hinge rope bypasses the top of the boom unit 2 and is fixedly connected with the hook 34, the hook 34 is aligned with a wellhead, and the lower part of the hook is connected with a blowout preventer string hook.

The utility model has the advantages that through the unique structural design, the whole device can be quickly spread and expanded at the wellhead, the device is simple to manufacture, the cost is lower, the installation and the subsequent maintenance of the blowout-preventing pipe string are convenient, the operation is simple, and the efficiency of workers and people can be improved.

Example two

The boom unit 2 comprises a rotating roller 24, two first booms 21 and two second booms 25, wherein one end of each first boom 21 is rotatably connected with one side of the vehicle body unit 1, the other end of each first boom 21 is connected with the rotating roller 24, each second boom 25 is rotatably connected with the first boom 21 through the rotating roller 24, and the rotating roller 24 spans over a wellhead and is in contact connection with a hinge rope 32.

EXAMPLE III

The boom unit 2 comprises a rotating roller 24, two first booms 21 and two second booms 25, wherein one end of each first boom 21 is rotatably connected with one side of the vehicle body unit 1, the other end of each first boom 21 is connected with the rotating roller 24, each second boom 25 is rotatably connected with the first boom 21 through the rotating roller 24, and the rotating roller 24 spans over a wellhead and is in contact connection with a hinge rope 32. A fixed connecting piece 22 and a lifting connecting piece 23 are arranged between the two first suspension arms 21, and the lifting connecting piece 23 is parallel to the rotating roller 24.

The boom unit 2 is mainly used to adjust the horizontal position of the bop string by adjusting the angle between the first boom 21 and the second boom 25.

Example four

The vehicle body unit 1 comprises a vehicle frame 11, wheels 13 and a guide roller 14, the guide roller 14 is rotatably connected with the top of the vehicle frame 11 and is parallel to a rotating roller 24, a first driving motor 31 is fixedly arranged on the top of the vehicle frame 11, a hinge rope 32 is wound on a driving shaft, the other end of the hinge rope 32 bypasses the guide roller 14 and is fixedly connected with a lifting connecting piece 23, and the first driving motor 31, the hinge rope 32 and the lifting connecting piece 23 are matched to form a wellhead alignment structure.

The first driving motor 31 drives the hinge rope 32 to drive the first suspension arm 21 to rotate, so that the alignment position of the blowout preventer string is adjusted, and the efficiency is higher than that of a manual pushing operation mode.

EXAMPLE five

The second driving motors 33 are provided with three and all fixedly arranged at the top of the frame 11, the driving shaft of each driving motor is wound with the hinge ropes 32 with different lengths, and the three hinge ropes 32 sequentially bypass the guide rollers 14 and the rotating rollers 24 and are fixedly connected with the corresponding lifting hooks 34.

The three hinge lines 32 are of different lengths so that the hooks 34 are of different heights, and the hooks 34 of different heights can be suspended at different height positions of the blowout preventer stack so that the blowout preventer stack can be erected.

EXAMPLE six

Supporting legs 12 are arranged at four corners of the frame 11, and the supporting legs 12 are of a hydraulic telescopic structure and are matched with the frame 11 to form a vehicle body fixing structure. The support legs 12 are provided to ensure that the body unit 1 does not move during lifting, which could cause the blowout preventer string to drop.

EXAMPLE seven

Supporting legs 12 are arranged at four corners of the frame 11, and the supporting legs 12 are of a hydraulic telescopic structure and are matched with the frame 11 to form a vehicle body fixing structure. The fixed connecting piece 22 is of an X-shaped structure and is matched with the first suspension arms 21 on two sides to form a stable structure of the first suspension arms 21.

The fixed connecting piece 22 is arranged to ensure the stability of the first boom 21 during the hoisting process, and avoid the first boom 21 from being bent and damaged due to the overlarge weight of the spray pipe string.

Example eight

Supporting legs 12 are arranged at four corners of the frame 11, and the supporting legs 12 are of a hydraulic telescopic structure and are matched with the frame 11 to form a vehicle body fixing structure. The fixed connecting piece 22 is of an X-shaped structure and is matched with the first suspension arms 21 on two sides to form a stable structure of the first suspension arms 21. The wheels 13 are detachably connected with the frame 11. The detachable design of the wheels 13 facilitates equipment maintenance, meanwhile, the wheels 13 can be detached in the operation hoisting process, the influence on the hoisting operation is avoided, and the wheels 13 are mounted on the frame 11 in the transportation process, so that the transportation of the device is facilitated.

The working principle is as follows:

1. the operator tows the apparatus near the wellhead and then lifts the frame 11 up using the support feet 12, after which the wheels 13 are removed.

2. The boom unit 2 is unfolded and straddled over the wellhead, the hinge rope 32 of the second drive motor 33 is passed through the rotating roller 24 and the guide roller 14, and the hook 34 is hung down from the rotating roller 24. The first drive motor 31 is then activated to adjust the position of the hook 34.

3. The hinge rope 32 of the second driving motor 33 is hooked with the upper, middle and lower portions of the blowout preventer stack in sequence in order of short, middle and long.

4. All the second drive motors 33 are started to hoist the blowout preventer string, and after the bottom of the blowout preventer string is aligned with the wellhead, the second drive motors 33 which are arranged from long to short and correspond to the hinge ropes 32 are sequentially closed in sequence, so that the vertical angle of the blowout preventer string can be adjusted.

5. After the lifting is finished, the lifting hooks 34 are sequentially taken down, then the square and flat suspension arm unit 2 of the first driving motor 31 is started, the lifting hooks 34 are taken down and placed on the frame 11, the suspension arm unit 2 is folded, and the device can be dragged to transport after the trailer with wheels 13 is installed. The operations 1-4 are repeated as long as the lifting operation needs to be performed again.

The present invention is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention, and the contents of the changes still fall within the scope of the present invention.

Claims

1. The utility model provides a portable well head lifting device, includes automobile body unit, davit unit and drive unit, its characterized in that, the davit unit is ladder formula structure, one side of automobile body unit with the davit unit rotate connect and upper portion with drive unit fixed connection, drive unit is provided with first driving motor, second driving motor, hinge rope and lifting hook, the one end of hinge rope with second driving motor twines to be connected and the other end is walked around the top of davit unit with lifting hook fixed connection, the lifting hook aligns and the lower part with the well head and prevents that the blowout pipe cluster is connected.

2. A mobile wellhead lifting device according to claim 1, characterised in that: the suspension arm unit comprises a rotating roller, two first suspension arms and two second suspension arms, one end of each first suspension arm is connected with one side of the vehicle body unit in a rotating mode, the other end of each first suspension arm is connected with the rotating roller, each second suspension arm is connected with the first suspension arm in a rotating mode through the rotating roller, and the rotating roller spans above a well mouth and is connected with the hinge rope in a contact mode.

3. A mobile wellhead lifting device according to claim 2, characterised in that: and a fixed connecting piece and a lifting connecting piece are arranged between the two first suspension arms, and the lifting connecting piece is parallel to the rotating rollers.

4. A mobile wellhead lifting device according to claim 3, characterised in that: the automobile body unit includes frame, wheel and guide roll, the guide roll with the top of frame is rotated and is connected and with the live-rollers is parallel, first driving motor fixed set up in the top of frame and the winding in the drive shaft have the hinge rope, the other end of hinge rope is walked around the guide roll with lift connecting piece fixed connection, first driving motor, hinge rope and lift connecting piece cooperation constitution well head alignment structure.

5. A mobile wellhead lifting device according to claim 4, characterised in that: second driving motor be provided with three and all fixed set up in the top of frame, every all twine the hinge rope that has different length in driving motor's the drive shaft, three the hinge rope all walks around in proper order guide roll and live-rollers and with correspond lifting hook fixed connection.

6. A mobile wellhead lifting device according to claim 4, characterised in that: the four corners department of frame all is provided with the supporting legs, the supporting legs be hydraulic telescoping structure and with the frame cooperation constitutes automobile body fixed knot and constructs.

7. A mobile wellhead lifting device according to claim 3, characterised in that: the fixed connecting piece is of an X-shaped structure and is matched with the first suspension arms on two sides to form a first suspension arm stabilizing structure.

8. A mobile wellhead lifting device according to claim 4, characterised in that: the wheels are detachably connected with the frame.