CN214660009U

CN214660009U - Expansion pipe centralizer for petroleum drilling

Info

Publication number: CN214660009U
Application number: CN202120957940.5U
Authority: CN
Inventors: 高宏波
Original assignee: Tianjin Bohai Zhonglian Oil Technology Co ltd
Current assignee: Tianjin Bohai Zhonglian Oil Technology Co ltd
Priority date: 2021-05-07
Filing date: 2021-05-07
Publication date: 2021-11-09
Anticipated expiration: 2031-05-07

Abstract

The utility model relates to the technical field of expansion pipe centralizers, and discloses an expansion pipe centralizer for oil drilling, which comprises a centralizer main body, wherein the inner side wall of the centralizer main body is fixedly connected with a stress device; the stress device comprises four stress mechanisms, the four stress mechanisms are fixedly connected to the inner side wall of the centralizer body in an annular uniform and equidistant mode, the stress mechanisms comprise supporting blocks matched with the inner side wall of the centralizer body, the supporting blocks are connected to the inner side wall of the centralizer body, one end, close to the axis of the centralizer body, of each supporting block is connected with a threaded pipe through a bearing seat, and a threaded rod is connected to the inner wall of each threaded pipe in a threaded mode. The utility model discloses according to the model diameter of the body that expands in the centralizer main part, the position of adjustment backup pad for four backup pads are held the expansion pipe body, satisfy the installation of the expansion pipe body of different diameter models, have improved the convenience of installation between centralizer main part and the expansion pipe body.

Description

Expansion pipe centralizer for petroleum drilling

Technical Field

The utility model relates to an expansion pipe centralizer technical field especially relates to an oil is bored and is adopted expansion pipe centralizer.

Background

The expansion pipe technology has a wide application prospect in the drilling, well completion and well repair processes, the expansion pipe technology is to put a pipe into the bottom of a well with an original size, and an expansion cone is used for enabling the pipe to generate permanent mechanical deformation so as to achieve the purpose of a predetermined project, however, most of the traditional expansion pipes adopt a solid pipe for expansion deformation.

In the prior art, the inner cavity space of the centralizer is fixed, but the expansion pipes have different types and diameters, so that the centralizer is inconvenient to install.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the inner cavity space of the centralizer in the prior art is fixed, but the expansion pipe has different model diameters and is inconvenient to install, and the provided centralizer for the expansion pipe is adopted in the oil drill.

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

the expansion pipe centralizer for petroleum drilling comprises a centralizer main body, wherein a stress device is fixedly connected to the inner side wall of the centralizer main body;

the stress device comprises four stress mechanisms and four stress mechanisms which are fixedly connected to the inner side wall of the centralizer body in an annular uniform and equal distance mode, each stress mechanism comprises a supporting block matched with the inner side wall of the centralizer body, the supporting blocks are connected to the inner side wall of the centralizer body, one end, close to the axis of the centralizer body, of each supporting block is connected with a threaded pipe through a bearing seat, a threaded rod is connected to the inner wall of each threaded pipe in a threaded mode, one end, far away from the supporting blocks, of each threaded rod penetrates through the pipe orifice of each threaded pipe and a fixedly connected arc supporting plate, and one end, close to the supporting blocks, of each supporting plate is symmetrically connected with a limiting assembly through the bearing seats.

Preferably, one end of the supporting plate, which is far away from the threaded rod, is fixedly connected with a sand bag.

Preferably, the limiting component comprises a limiting rod, one end of the limiting rod is fixedly connected to one end, close to the threaded rod, of the supporting plate, a scale interval is arranged on the limiting rod, a limiting pipe is sleeved on the limiting rod, and one end of the limiting pipe is connected with the supporting block.

Preferably, the supporting block is far away from one end fixedly connected with iron plate of bearing frame, the assorted support groove has been seted up to the position that corresponds the iron plate on the inside wall of centralizer main part, the tank bottom fixedly connected with magnet in support groove, the iron plate is connected with magnet.

Preferably, the outer pipe wall of the threaded pipe is provided with anti-skid threads.

Preferably, the four sand bags are provided with expansion pipe bodies together at one side close to the centralizer main body.

Compared with the prior art, the utility model provides an oil bores and adopts expansion pipe centralizer possesses following beneficial effect:

1. this expansion pipe centralizer is adopted in oil brill through setting up the stress device, applys the turning force to four atress mechanisms's screwed pipe for the position of backup pad takes place the adjustment, and according to the model diameter of the internal expansion body of centralizer main part, the position of adjustment backup pad makes four backup pads grasp the expansion body, satisfies the installation of the expansion body of different diameter models, has improved the convenience of installation between centralizer main part and the expansion body.

2. This expansion pipe centralizer is adopted in oil drilling through setting up spacing subassembly, prevents that the threaded rod from taking place to rotate along with the rotation of screwed pipe, and drives the gag lever post synchronous motion in spacing pipe during backup pad motion, through the scale interval that stretches out spacing pipe on the gag lever post, ensures that four backup pads remove the same distance.

The device does not relate to the part and all is the same with prior art or can adopt prior art to realize, the utility model discloses according to the model diameter of the body that expands in the centralizer main part, the position of adjustment backup pad for four backup pads are held the body that expands, satisfy the installation of the body that expands of different diameter models, have improved the convenience of installation between centralizer main part and the body that expands.

Drawings

FIG. 1 is a schematic structural view of an expansion pipe centralizer for oil drilling and production according to the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1.

In the figure: 1. a centralizer body; 2. a support block; 3. a bearing seat; 4. a threaded pipe; 5. a threaded rod; 6. a support plate; 7. a sand bag; 8. a limiting rod; 9. a limiting pipe; 10. an iron block; 11. a support groove; 12. a magnet; 13. expanding the tubular body; 14. and (4) a scale value.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-2, the expansion pipe centralizer for oil drilling comprises a centralizer body 1, wherein a stress device is fixedly connected to the inner side wall of the centralizer body 1;

the stress device comprises four stress mechanisms, the four stress mechanisms are fixedly connected on the inner side wall of the centralizer body 1 in an annular uniform and equidistant manner, the stress mechanisms comprise supporting blocks 2 matched with the inner side wall of the centralizer body 1, the supporting blocks 2 are connected on the inner side wall of the centralizer body 1, one ends, close to the axis of the centralizer body 1, of the supporting blocks 2 are connected with threaded pipes 4 through bearing seats 3, threaded rods 5 are connected on the inner pipe walls of the threaded pipes 4 in a threaded manner, one ends, far away from the supporting blocks 2, of the threaded rods 5 penetrate through pipe orifices of the threaded pipes 4 and are fixedly connected with arc-shaped supporting plates 6, one ends, close to the supporting blocks 2, of the supporting plates 6 are symmetrically connected with limiting assemblies relative to the bearing seats 3, the threaded pipes 4 of the four stress mechanisms are applied with rotating force, the threaded pipes 4 rotate in the bearing seats 3 after being stressed, are limited by the limiting assemblies and rotate along with the threaded pipes 4, threaded rod 5 promotes backup pad 6 and carries out the motion of corresponding direction according to the rotation direction of screwed pipe 4 for the adjustment takes place for the position of backup pad 6, and according to the model diameter of expansion pipe body 13 in centralizer main part 1, the position of adjustment backup pad 6 makes four backup pads 6 centre gripping expansion pipe body 13, satisfies the installation of the expansion pipe body 13 of different diameter models, has improved the convenience of installing between centralizer main part 1 and the expansion pipe body 13.

The one end fixedly connected with sand bag 7 of threaded rod 5 is kept away from to backup pad 6, and when backup pad 6 centre gripping inflation body 13, compactness when connecting between backup pad 6 and the inflation body 13 has been improved through sand bag 7.

Spacing subassembly includes gag lever post 8, the one end fixed connection of gag lever post 8 is close to the one end of threaded rod 5 in backup pad 6, be equipped with scale interval 14 on the gag lever post 8, the cover is equipped with spacing pipe 9 on the gag lever post 8, the one end of spacing pipe 9 is connected with supporting shoe 2, because gag lever post 8 can only slide in spacing pipe 9, and then carry on spacingly to backup pad 6 and threaded rod 5's direction of motion, prevent that threaded rod 5 from taking place to rotate along with screwed pipe 4's rotation, and drive gag lever post 8 synchronous motion in spacing pipe 9 during backup pad 6 motion, stretch out scale interval 14 of spacing pipe 9 on the gag lever post 8, ensure that four backup pads 6 remove the same distance.

One end fixedly connected with iron plate 10 of bearing frame 3 is kept away from to supporting shoe 2, and assorted support groove 11 has been seted up to the position that corresponds iron plate 10 on the inside wall of centralizer main part 1, supports groove bottom fixedly connected with magnet 12 of groove 11, and iron plate 10 is connected with magnet 12, is convenient for connect supporting shoe 2 and centralizer main part 1

The outer wall of the threaded pipe 4 is provided with anti-skid lines to increase the friction force when the hand holds the threaded pipe 4

The expansion pipe bodies 13 are arranged on one sides of the four sand bags 7 close to the centralizer main body 1.

In the utility model, the screwed pipe 4 of four stress mechanisms is applied with a rotating force, the screwed pipe 4 rotates in the bearing seat 3 after being stressed, and the position of the supporting plate 6 is adjusted by limiting the limiting component along with the rotation of the screwed pipe 4 and the threaded rod 5 pushes the supporting plate 6 to move in a corresponding direction according to the rotating direction of the screwed pipe 4, so that the position of the supporting plate 6 is adjusted, the four supporting plates 6 clamp the expansion pipe body 13 according to the model diameter of the expansion pipe body 13 in the centralizer main body 1, the installation of the expansion pipe bodies 13 with different diameter models is met, and the convenience of installation between the centralizer main body 1 and the expansion pipe body 13 is improved; because the gag lever post 8 only can slide in spacing pipe 9, and then carry on spacingly to the direction of motion of backup pad 6 and threaded rod 5, prevent that threaded rod 5 from taking place to rotate along with the rotation of screwed pipe 4, and backup pad 6 drives gag lever post 8 synchronous motion in spacing pipe 9 during the motion, through the scale interval 14 that stretches out spacing pipe 9 on the gag lever post 8, ensures that four backup pads 6 remove the same distance.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The expansion pipe centralizer for oil drilling comprises a centralizer main body (1) and is characterized in that a stress device is fixedly connected to the inner side wall of the centralizer main body (1);

the stress device comprises four stress mechanisms, wherein the stress mechanisms are fixedly connected to the inner side wall of the centralizer body (1) in an annular uniform and equal distance mode, each stress mechanism comprises a supporting block (2) matched with the inner side wall of the centralizer body (1), the supporting blocks (2) are connected to the inner side wall of the centralizer body (1), one end, close to the axis of the centralizer body (1), of each supporting block (2) is connected with a threaded pipe (4) through a bearing seat (3), a threaded rod (5) is connected to the inner wall of each threaded pipe (4) in a threaded mode, one end, far away from the supporting blocks (2), of each threaded rod (5) penetrates through a pipe opening of each threaded pipe (4) and is fixedly connected with an arc-shaped supporting plate (6), and one end, close to the supporting blocks (2), of each supporting plate (6) is symmetrically connected with a limiting component through the corresponding to the corresponding bearing seats (3).

2. The oil drilling and production expansion pipe centralizer of claim 1, characterized in that the end of the supporting plate (6) far away from the threaded rod (5) is fixedly connected with a sand bag (7).

3. The expansion pipe centralizer for oil drilling and production according to claim 1, wherein the limiting component comprises a limiting rod (8), one end of the limiting rod (8) is fixedly connected to one end, close to the threaded rod (5), of the supporting plate (6), scale values (14) are arranged on the limiting rod (8), a limiting pipe (9) is sleeved on the limiting rod (8), and one end of the limiting pipe (9) is connected with the supporting block (2).

4. The oil drilling and production expansion pipe centralizer of claim 1, wherein an iron block (10) is fixedly connected to one end of the supporting block (2) far away from the bearing seat (3), a matched supporting groove (11) is formed in the inner side wall of the centralizer body (1) corresponding to the position of the iron block (10), a magnet (12) is fixedly connected to the bottom of the supporting groove (11), and the iron block (10) is connected with the magnet (12).

5. The centralizer for expansion pipes for oil drilling and production according to claim 1, characterized in that the outer pipe wall of the threaded pipe (4) is provided with anti-skid threads.

6. An oil drilling and production expansion pipe centralizer according to claim 2, characterized in that the four sandbags (7) are provided with an expansion pipe body (13) at the side close to the centralizer body (1).