CN220151291U - Single-ball centralizer - Google Patents
Single-ball centralizer Download PDFInfo
- Publication number
- CN220151291U CN220151291U CN202321587249.8U CN202321587249U CN220151291U CN 220151291 U CN220151291 U CN 220151291U CN 202321587249 U CN202321587249 U CN 202321587249U CN 220151291 U CN220151291 U CN 220151291U
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- Prior art keywords
- ball
- centralizer
- cavities
- cavity
- centralizer body
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- 239000011324 bead Substances 0.000 claims description 18
- 230000000903 blocking effect Effects 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 description 3
- 239000003129 oil well Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The utility model discloses a single-ball centralizer, which comprises a centralizer body: six round concave cavities are annularly formed in the surface of the centralizer body, the ball embedding sleeves are arranged in the inner cavities of the round concave cavities, ball embedding cavities are formed in the ball embedding sleeves, rotatable ball bodies are arranged in the inner cavities of the ball embedding cavities, the surfaces of the ball bodies protrude out of the ball embedding sleeves, and six arc-shaped protrusions are arranged on the surfaces of the centralizer body. According to the utility model, through six arc-shaped bulges on the surface of the centralizer body, the centralizer body plays a role in supporting the maximum lateral force in the pit, the centering and smooth descending of the casing under the conditions of small borehole gap, long horizontal section and complex borehole track are ensured, the ball insert sleeve is picked up, the ball body is plugged into the inner cavity of the ball insert cavity, the ball insert sleeve is fixed in the inner cavity of the round concave cavity on the surface of the centralizer body, the ball body protrudes, the risk of downhole blocking can be avoided, and friction and torsion are reduced.
Description
Technical Field
The utility model belongs to the technical field of centralizers, and particularly relates to a single-ball centralizer.
Background
The centralizer can centralize the sucker rod, reduce the contact of the sucker rod and avoid the mutual abrasion of the sucker rod and the oil pipe; the uniform abrasion of the centralizer replaces the eccentric abrasion of the pipe rod, so that the phenomenon of pitting corrosion is avoided to cause oil pipe leakage; the centralizer can reduce vibration load of the sucker rod in a shaft, weaken bending of the sucker rod, improve eccentric wear, prolong the service life of the sucker rod, and is particularly important in increasing the service life of the centralizer, reducing overhaul times of an oil well, prolonging the production period of the oil well and selecting materials of the centralizer.
The well casing has small gap, long horizontal section and complex well track, which makes casing difficult, so that a single ball centralizer is needed, a plurality of arc-shaped bulges play a role in supporting the maximum lateral force, the casing is centered and smoothly lowered, and balls can avoid the risk of downhole blocking, and the rolling resistance and torsion reduction are realized.
Disclosure of Invention
The utility model aims to provide a single-ball centralizer, which is provided with a plurality of arc-shaped bulges to play a role in supporting the maximum lateral force, truly playing a role in centralizing and smoothly descending a casing, and can avoid the risk of downhole blocking by balls so as to solve the background technical problem.
The technical scheme for solving the technical problems is as follows: single ball centralizer, it includes the centralizer body: six round concave cavities are annularly formed in the surface of the centralizer body, the ball inserting sleeve is arranged in the inner cavity of the round concave cavity, the ball inserting cavity is arranged on the ball inserting sleeve, the rotatable ball body is arranged in the inner cavity of the ball inserting cavity, the surface of the ball body protrudes out of the ball inserting sleeve, six arc-shaped protrusions are arranged on the surface of the centralizer body, the round concave cavities are formed in the middle of the arc-shaped protrusions, and arc-shaped grooves are formed between the two arc-shaped protrusions.
Preferably, the surface of the bead insert sleeve is provided with saw teeth, and the bead insert sleeve is fixed in the inner cavity of the round concave cavity through the saw teeth.
Preferably, a threaded hole is formed in the bottom of the centralizer body, a long screw is connected with the inner cavity of the threaded hole in a threaded mode, and one end of the long screw stretches into the inner cavity of the round concave cavity and abuts against the surface of the bead embedding sleeve.
Preferably, the surface of the bead insert sleeve is provided with an annular limiting groove, and one end of the long screw extends into the inner cavity of the annular limiting groove.
Preferably, one end of the long screw far away from the bead sleeve is provided with a concave cross rotating block.
1. The beneficial effects of the utility model are as follows: according to the utility model, through six arc-shaped bulges on the surface of the centralizer body, the centralizer body plays a role in supporting the maximum lateral force in the pit, the centering and smooth descending of the casing under the conditions of small borehole gap, long horizontal section and complex borehole track are ensured, the ball insert sleeve is picked up, the ball body is plugged into the inner cavity of the ball insert cavity, the ball insert sleeve is fixed in the inner cavity of the round concave cavity on the surface of the centralizer body, the ball body protrudes, the risk of downhole blocking can be avoided, and friction and torsion are reduced.
2. According to the utility model, through the arrangement of the saw teeth, when the insert ball sleeve is knocked to the inner cavity of the round concave cavity, the fixing of the insert ball sleeve can be realized through the saw teeth, so that the insert ball sleeve is prevented from moving at will in the inner cavity of the round concave cavity.
Drawings
Wherein:
FIG. 1 is a schematic perspective view of an embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional front view of a centralizer body according to an embodiment of the utility model;
fig. 3 is a schematic bottom view of an embodiment of the present utility model.
In the drawings, the list of components represented by the various numbers is as follows:
1. a centralizer body, 2, a round concave cavity, 3, a bead embedding sleeve, 4, a bead embedding cavity, 5, a ball body, 6 and a threaded hole, 7, long screws, 8, annular limiting grooves, 9, saw teeth, 10, arc-shaped protrusions, 11, arc-shaped grooves, 12 and concave cross rotating blocks.
Detailed Description
Hereinafter, embodiments of the single-ball centralizer of the utility model will be described with reference to the accompanying drawings.
Embodiment one:
fig. 1-3 illustrate a single ball centralizer of an embodiment of the utility model, comprising a centralizer body 1: six round cavities 2 are annularly formed in the surface of the centralizer body 1, the ball inserting sleeve 3 is installed in the inner cavity of the round cavities 2, saw teeth 9 are arranged on the surface of the ball inserting sleeve 3, the ball inserting sleeve 3 is fixed in the inner cavity of the round cavities 2 through the saw teeth 9, the ball inserting sleeve 3 is fixed to the ball inserting sleeve 3 through the saw teeth 9 when being knocked to the inner cavity of the round cavities 2, the ball inserting sleeve 3 is prevented from moving randomly in the inner cavity of the round cavities 2, the ball inserting cavity 4 is arranged on the ball inserting sleeve 3, a rotatable ball body 5 is arranged in the inner cavity of the ball inserting cavity 4, the surface of the ball body 5 protrudes out of the ball inserting sleeve 3, six arc-shaped protrusions 10 are arranged on the surface of the centralizer body 1, the round cavities 2 are formed in the middle of the arc-shaped protrusions 10, and arc-shaped grooves 11 are formed between the two arc-shaped protrusions 10.
Embodiment two:
fig. 1-3 illustrate a single ball centralizer of an embodiment of the utility model, comprising a centralizer body 1: six round cavities 2 are annularly formed in the surface of the centralizer body 1, a bead inserting sleeve 3 is arranged in an inner cavity of the round cavities 2, a bead inserting cavity 4 is formed in the bead inserting sleeve 3, a rotatable ball body 5 is arranged in the inner cavity of the bead inserting cavity 4, the surface of the ball body 5 protrudes out of the bead inserting sleeve 3, six arc-shaped protrusions 10 are arranged on the surface of the centralizer body 1, the round cavities 2 are formed in the middle of the arc-shaped protrusions 10, arc-shaped grooves 11 are formed between the two arc-shaped protrusions 10, threaded holes 6 are formed in the bottoms of the centralizer body 1, long screws 7 are connected in the inner cavity of the threaded holes 6 in a threaded mode, one ends of the long screws 7 extend into the inner cavity of the round cavities 2 and abut against the surface of the bead inserting sleeve 3, annular limiting grooves 8 are formed in the surface of the bead inserting sleeve 3, one ends of the long screws 7 extend into the inner cavity of the annular limiting grooves 8, and concave cross rotating blocks 12 are arranged at one ends of the long screws 7, which are far away from the bead inserting sleeve 3.
Working principle: when the ball bearing sleeve is used, a user picks up the ball bearing sleeve 3, plugs the ball bearing body 5 into the inner cavity of the ball bearing cavity 4, knocks the ball bearing sleeve 3 into the inner cavity of the round cavity 2 until the ball bearing sleeve 3 is propped against the deepest part of the inner cavity of the round cavity 2, and the ball bearing sleeve 3 can be pre-fixed in the inner cavity of the round cavity 2 on the surface of the centralizer body 1 by friction force between the saw teeth 9 on the surface of the ball bearing sleeve 3 and the inner wall of the round cavity 2, the ball bearing body 5 protrudes, the risk of downhole blocking can be avoided, friction resistance and torque reduction are avoided, then a cross screw driver is used for screwing the long screw 7, one end of the long screw 7 stretches into the inner cavity of the annular limiting groove 8 on the surface of the ball bearing sleeve 3 in cooperation with the inner thread of the threaded hole 6, the installation of the ball bearing sleeve 3 is reinforced, the ball bearing sleeve 3 is prevented from being separated from the inner cavity of the round cavity 2, and six arc-shaped bulges 10 on the surface of the centralizer body 1 are supported by maximum lateral force under the condition that the centralizer body 1 is provided, and the sleeve is centered and well hole is smoothly in the condition of small clearance, long horizontal section and complex track is ensured.
To sum up: this single pearl ball centralizer, six arc protruding 10 on centralizer body 1 surface are crossed for centralizer body 1 plays the biggest lateral force support in the pit, guarantees that the sleeve pipe is placed in the middle and is in the same direction as going into under the circumstances that the well clearance is little, the horizontal section is long, the well track is complicated, and pick up the pearl cover 3, insert ball body 5 in the inner chamber of pearl chamber 4, and fix the inner chamber at centralizer body 1 surface round cavity 2 with pearl cover 3, ball body 5 protrusion can avoid the risk of blocking in the pit, antifriction hinders the torque reduction.
Claims (3)
1. Single ball centralizer, its characterized in that includes centralizer body (1): six round cavities (2) have been seted up to the surface annular of centralizer body (1), insert pearl cover (3) are installed to the inner chamber of round cavities (2), be provided with on insert pearl cover (3) and insert pearl chamber (4), the inner chamber of inserting pearl chamber (4) is provided with rotatable ball body (5), the outside of protruding insert pearl cover (3) in surface of ball body (5), the surface of centralizer body (1) is provided with six arc protruding (10), the middle part at arc protruding (10) is seted up in round cavities (2), be provided with arc recess (11) between two arc protruding (10), screw hole (6) have been seted up to the bottom of centralizer body (1), the inner chamber threaded connection of screw hole (6) has long screw (7), the one end of long screw (7) stretches into the inner chamber of round cavities (2) and supports the surface at insert pearl cover (3), annular spacing groove (8) are seted up on the surface of ball cover (3), the one end of long screw (7) stretches into annular spacing groove (8).
2. The single-ball centralizer according to claim 1, characterized in that the surface of the bead sleeve (3) is provided with saw teeth (9), and the bead sleeve (3) is fixed in the inner cavity of the round concave cavity (2) through the saw teeth (9).
3. The single-ball centralizer according to claim 2, characterized in that the end of the long screw (7) remote from the bead sleeve (3) is provided with a concave cross-shaped turning block (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321587249.8U CN220151291U (en) | 2023-06-21 | 2023-06-21 | Single-ball centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321587249.8U CN220151291U (en) | 2023-06-21 | 2023-06-21 | Single-ball centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220151291U true CN220151291U (en) | 2023-12-08 |
Family
ID=89021368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321587249.8U Active CN220151291U (en) | 2023-06-21 | 2023-06-21 | Single-ball centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220151291U (en) |
-
2023
- 2023-06-21 CN CN202321587249.8U patent/CN220151291U/en active Active
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