CN210264570U - Oil pipe centralizer for oil well - Google Patents
Oil pipe centralizer for oil well Download PDFInfo
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- CN210264570U CN210264570U CN201921140881.1U CN201921140881U CN210264570U CN 210264570 U CN210264570 U CN 210264570U CN 201921140881 U CN201921140881 U CN 201921140881U CN 210264570 U CN210264570 U CN 210264570U
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- centralizer
- installation piece
- centralizer body
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- pulley
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Abstract
The utility model discloses an oil pipe centralizer for oil well, including the centralizer body, the surface of centralizer body evenly is provided with the piece of rightting, and the surface of piece of rightting is provided with the sliding tray, and the inboard sliding connection of sliding tray has the installation piece, and the surface of installation piece is provided with the mounting groove, and the pulley is installed in the inboard pivot of mounting groove. This kind of oil pipe centralizer for oil well, the centralizer body passes through spring butt installation piece and makes pulley butt sleeve pipe, with the centralizer body in sheathed tube center, when the sleeve pipe shrink removes the centralizer body and receives the resistance, because the pulley mounting is on the surface of installation piece, and installation piece slidable mounting is on the surface of centralizing piece, remove the centralizer body, the pulley atress drives the installation piece and carries out the shrink removal along the inside extrusion spring of sliding tray, make the centralizer body pass through the sleeve pipe shrink and hinder the region and can effectively avoid the card phenomenon of dying.
Description
Technical Field
The utility model relates to an oil well is instrument technical field in the pit, specifically is an oil pipe centralizer for oil well.
Background
In the process of oil field development, along with the development depth, the depth of an oil well is continuously deepened. Some oil wells are thousands of meters deep, and some become slant wells or horizontal wells. When in workover operation, the oil pipe needs to be pulled out from a deep well, an inclined well or a horizontal well, the outer wall of the oil pipe is easy to contact with the inner wall of the casing pipe to generate friction, and the friction is easy to damage the oil pipe and the casing pipe. Damage to the tubing requires replacement, which increases the well capital investment; the damage of the casing causes oil leakage of the oil well and influences the use, even the whole oil well is scrapped, and huge loss is caused to the economy of the oil field.
The oil pipe centralizer can enable the underground oil pipe to be located in the middle of the casing pipe, so that the casing pipe and the oil pipe are prevented from being rubbed with each other, and the oil pipe is further protected from being damaged. The casing pipe can generate larger deformation in the underground operation process, particularly after steam injection, well stewing and other operations, the inner diameter of the casing pipe at the position of the oil pipe centralizer can not be contracted due to the support of the oil pipe centralizer, and the casing pipes at the two ends of the oil pipe centralizer can be easily clamped at the position and can not move if being contracted, so that the normal lifting of the oil pipe is influenced. The existing oil pipe centralizer is designed into a whole, and the existing oil pipe centralizer is easy to wear after being used for a long time, so that the existing oil pipe centralizer needs to be replaced again.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an oil pipe centralizer for oil well to solve the sleeve pipe shrink and hinder centralizer removal problem.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an oil pipe centralizer for oil well, includes the centralizer body, the surface of centralizer body evenly is provided with the piece of rightting, the surface of piece of rightting is provided with the sliding tray, the inboard sliding connection of sliding tray has the installation piece, the surface of installation piece is provided with the mounting groove, the pulley is installed in the inboard pivot of mounting groove.
Preferably, the surface of the inner wall righting block of the sliding groove is symmetrically provided with a limiting groove, the surface of the mounting block is symmetrically in threaded connection with a limiting pin, and the limiting pin is connected to the inner side of the limiting groove in a sliding manner.
Preferably, the surface of the mounting block is uniformly provided with second spring grooves, the surface of the sliding groove is uniformly provided with first spring grooves, and springs are mounted between the first spring grooves and the second spring grooves.
Compared with the prior art, the beneficial effects of the utility model are that: the oil pipe centralizer for the oil well comprises a centralizer body, a spring, a mounting block, a pulley, a sliding block and a sliding block, wherein the centralizer body is abutted to a sleeve through the spring and the mounting block, and is positioned at the center of the sleeve; second, the centralizer body passes through pulley butt sleeve pipe surface, and when removing the centralizer body, the pulley has reduced the friction to the piece of righting with this at sleeve pipe surface gyro wheel, and when needing to change installation piece and pulley, takes out the spacer pin and can take out the installation piece from the sliding tray and change, has avoided the centralizer of more renew to cause unnecessary extravagant.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a top view of the overall structure of the present invention;
fig. 3 is a sectional view of the centering block and the mounting block of the present invention.
In the figure: the centering device comprises a centering device body 1, a centering block 2, a sliding groove 21, a limiting groove 22, a spring 23, a first spring groove 24, an installation block 3, an installation groove 31, a pulley 32, a limiting pin 33 and a second spring groove 34.
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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, 2 and 3, an oil pipe centralizer for an oil well comprises a centralizer body 1, centralizing blocks 2 are uniformly arranged on the surface of the centralizer body 1, the centralizing blocks 2 are four and are uniformly arranged on the periphery of the centralizer body 1, a sliding groove 21 is formed in the surface of each centralizing block 2, an installation block 3 is connected to the inner side of each sliding groove 21 in a sliding mode, the installation block 3 moves along the sliding groove 21 under stress, an installation groove 31 is formed in the surface of each installation block 3, a pulley 32 is installed on an inner side rotating shaft of each installation groove 31, and friction is reduced through rolling connection of the pulley 32 and a sleeve.
Referring to fig. 2 and 3, the surface of the inner wall centering block 2 of the sliding groove 21 is symmetrically provided with a limiting groove 22, the surface of the mounting block 3 is symmetrically connected with a limiting pin 33 through threads, the limiting pin 33 is slidably connected to the inner side of the limiting groove 22 to limit the position of the mounting block 3, and the mounting block 3 can be taken out of the sliding groove 21 by rotating and detaching the limiting pin 33 from the surface of the mounting block 3.
Referring to fig. 3, the surface of the mounting block 3 is uniformly provided with second spring grooves 34, the surface of the sliding groove 21 is uniformly provided with first spring grooves 24, the second spring grooves 34 correspond to the first spring grooves 24, springs 23 are mounted between the first spring grooves 24 and the second spring grooves 34, and the mounting block 3 is pushed by the elastic force of the springs 23 to move along the sliding groove 21 to position the centralizer body 1 by the pulley 32 abutting against the surface of the casing.
The utility model discloses when concrete implementation: the installation block 3 is pushed to move along the sliding groove 21 through the elastic force of the spring 23, the pulley 32 on the surface of the installation block 3 is abutted against the sleeve, the centralizer body 1 is located at the center of the sleeve, when the sleeve contracts to move the centralizer body 1 and is subjected to resistance, the pulley 32 is installed on the surface of the installation block 3, the installation block 3 is slidably installed on the surface of the centralizing block 2, the centralizer body 1 is moved, the pulley 32 is stressed to drive the installation block 3 to extrude the spring 23 inwards along the sliding groove 21, the spring 23 contracts the installation block 3 to move inwards along the sliding groove 21, and the centralizer body 1 passes through the sleeve contraction blocking area in the mode, so that the phenomenon that the centralizer is clamped can be effectively avoided; because centralizer body 1 fixes a position centralizer body 1 through pulley 32 butt sleeve pipe surface, and pulley 32 rotates and installs at mounting groove 31 inboardly, consequently, when removing centralizer body 1, pulley 32 can be at sleeve pipe surface gyro wheel, so reduce the friction to righting piece 2, and when needing to change installation piece 3 and pulley 32, take out spacer pin 33 from the surface of installation piece 3, it is spacing just to have lost when installation piece 3 slides along sliding tray 21, can take out installation piece 3 from sliding tray 21 and change, the centralizer body 1 of having avoided more renewing causes unnecessary waste.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides an oil pipe centralizer for oil well, includes centralizer body (1), its characterized in that: the surface of centralizer body (1) evenly is provided with and rights piece (2), the surface of righting piece (2) is provided with sliding tray (21), the inboard sliding connection of sliding tray (21) has installation piece (3), the surface of installation piece (3) is provided with mounting groove (31), pulley (32) are installed in the inboard pivot of mounting groove (31).
2. The oil well tubing centralizer of claim 1, wherein: the surface symmetry of the inner wall righting block (2) of sliding tray (21) is provided with spacing groove (22), the surface symmetry threaded connection of installation piece (3) has spacing round pin (33), and spacing round pin (33) sliding connection is in the inboard of spacing groove (22).
3. The oil well tubing centralizer of claim 1, wherein: the surface of the mounting block (3) is uniformly provided with second spring grooves (34), the surface of the sliding groove (21) is uniformly provided with first spring grooves (24), and springs (23) are mounted between the first spring grooves (24) and the second spring grooves (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921140881.1U CN210264570U (en) | 2019-07-19 | 2019-07-19 | Oil pipe centralizer for oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921140881.1U CN210264570U (en) | 2019-07-19 | 2019-07-19 | Oil pipe centralizer for oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210264570U true CN210264570U (en) | 2020-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921140881.1U Active CN210264570U (en) | 2019-07-19 | 2019-07-19 | Oil pipe centralizer for oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210264570U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700442A (en) * | 2021-09-06 | 2021-11-26 | 常熟市石油固井工具有限公司 | Sticking method of sticking type polyester centralizer |
-
2019
- 2019-07-19 CN CN201921140881.1U patent/CN210264570U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700442A (en) * | 2021-09-06 | 2021-11-26 | 常熟市石油固井工具有限公司 | Sticking method of sticking type polyester centralizer |
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