CN216894286U - Spring centralizer - Google Patents
Spring centralizer Download PDFInfo
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- CN216894286U CN216894286U CN202220682626.5U CN202220682626U CN216894286U CN 216894286 U CN216894286 U CN 216894286U CN 202220682626 U CN202220682626 U CN 202220682626U CN 216894286 U CN216894286 U CN 216894286U
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Abstract
The utility model discloses a spring centralizer, comprising: the elastic centralizer comprises a fixed sleeve, an elastic centralizer body and a positioning sleeve, wherein the elastic centralizer body is sleeved on the outer wall of the fixed sleeve, the positioning sleeve is in threaded connection with the outer wall of the fixed sleeve and is positioned on two sides of the elastic centralizer body and used for fixing the elastic centralizer body, and a through hole is axially formed in the fixed sleeve; the elastic centralizer body comprises a first mounting seat and a second mounting seat which are respectively sleeved on the outer wall of the fixed sleeve and a plurality of spring pieces which are rotatably arranged between the first mounting seat and the second mounting seat, wherein the spring pieces are circumferentially distributed along the outer wall of the first mounting seat and the outer wall of the second mounting seat. The positioning sleeves on the two sides of the elastic centralizer body are adjusted to rotate in the direction of the elastic centralizer, the positioning sleeves on the two sides enable the first installation seat and the second installation seat to generate axial displacement, so that the sleeve or an instrument is located in the well hole and in the center, and the probability of damage is reduced.
Description
Technical Field
The utility model relates to the technical field of petroleum drilling and production equipment, in particular to a spring centralizer.
Background
The statements in this application as to the background of the utility model relate to the present application and are merely provided to facilitate an understanding of the present application and may not constitute an admission that the applicant specifically believes or believes that the applicant is prior art at the date of filing the present application for the first time.
At present, the depth of a domestic well is deeper and deeper, and when a cable pipe string is operated underground, because a transmission tool of a cable is more and more complex, in order to ensure that the underground tool can operate in the middle when the well is lowered, a sleeve needs to be adopted to support the wall of the oil well and the wall of the gas well. All current casing centralizers are mainly elastic centralizers and rigid centralizers, which have obvious disadvantages and are components used for centralizing casings or instruments and ensuring concentricity of the casings or instruments in a borehole. The performance of centralizers of different types has different influences on the setting-in and final centering degree of a casing or an instrument, and the centralizer cannot be suitable for cable pipe strings in different well drilling processes.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a spring centralizer, and aims to solve the problems that the conventional centralizer cannot guarantee the centering degree of a downhole tool and is easy to damage and deform.
The technical scheme for solving the technical problems is as follows:
a spring centralizer, comprising: the elastic centralizer comprises a fixed sleeve, an elastic centralizer body and a positioning sleeve, wherein the elastic centralizer body is sleeved on the outer wall of the fixed sleeve, the positioning sleeve is in threaded connection with the outer wall of the fixed sleeve and is positioned on two sides of the elastic centralizer body and used for fixing the elastic centralizer body, and a through hole is axially formed in the fixed sleeve;
the elastic centralizer body comprises a first mounting seat and a second mounting seat which are respectively sleeved on the outer wall of the fixed sleeve and a plurality of spring pieces which are rotatably arranged between the first mounting seat and the second mounting seat, and the spring pieces are circumferentially distributed along the outer wall of the first mounting seat and the outer wall of the second mounting seat.
The beneficial effects of adopting the above technical scheme are: positioning sleeve and fixed sleeve threaded connection are used for fixing a position elasticity centralizer body, according to the needs of drilling tool, positioning sleeve through adjusting elasticity centralizer body both sides rotates to the direction of elasticity centralizer, the positioning sleeve of both sides makes first mount pad and second mount pad produce axial displacement, thereby make the spring leaf outside protruding, and spring leaf circumference distributes, because the spring leaf has certain elasticity, fixed sleeve through-hole is used for placing sleeve pipe or instrument, thereby make sleeve pipe or instrument be in the position placed in the middle in the well, and can adjust the protruding range of spring leaf through positioning sleeve, thereby can be applicable to different wellbores, can adjust elasticity centralizer body as required in real time through positioning sleeve simultaneously, reduce the probability that the damage appears.
Furthermore, a spring is connected between the first mounting seat and the second mounting seat, the spring sleeve is arranged on the outer wall of the fixing sleeve, and the length of the spring is matched with that of the spring piece.
The beneficial effects of adopting the above technical scheme are: when adjusting the position sleeve extrusion and rotating in opposite directions and making elasticity centralizer body extruded, thereby make the spring leaf outwards protruding because of the reason of pressure, the spring is used for restricting the degree that first mount pad and second mount pad are extruded, avoid the extrusion to make the spring leaf appear damaging, the spring can also be connected first mount pad and second mount pad simultaneously, and make elasticity centralizer body structure more stable, when not using elasticity centralizer body, adjust the position sleeve and rotate to both ends, the spring leaf can be ordered about and reset, reduce the damage probability of spring leaf.
Furthermore, the fixed sleeve comprises a first thread section, a connecting section and a second thread section which are connected in sequence, the inner diameter of the first mounting seat and the inner diameter of the second mounting seat are respectively larger than the outer diameter of the first thread section, the outer diameter of the connecting section and the outer diameter of the second thread section, and the positioning sleeve is respectively in threaded connection with the outer wall of the first mounting seat and the outer wall of the second mounting seat.
The beneficial effects of adopting the above technical scheme are: the inner diameters of the first mounting seat and the second mounting seat are respectively larger than the outer diameters of the first thread section, the connecting section and the second thread section, so that the positioning sleeve can smoothly push the first mounting seat and the second mounting seat and extrude the spring pieces, and therefore the sleeve or an instrument in the fixing sleeve is located at a central position in a well under the action of the spring centralizer body, and the device is simple in structure and convenient to operate.
Furthermore, the end part of the first thread section far away from the connecting section and the end part of the second thread section far away from the connecting section are respectively connected with a limiting sleeve, and the limiting sleeves are communicated with the inside of the fixed sleeve.
The beneficial effects of adopting the above technical scheme are: the limiting sleeve is used for limiting the positions of the spring centralizer body and the positioning sleeve.
Furthermore, the outer wall of the first mounting seat and the outer wall of the second mounting seat are respectively provided with a groove in the circumferential direction, and the spring piece is rotatably connected with the grooves.
The beneficial effects of adopting the above technical scheme are: the groove is convenient for the installation and the location of the spring piece, and is convenient for rotation at the same time, thereby providing a rotation space.
Furthermore, two ends of the spring piece are respectively provided with a rotating shaft which is in running fit with the inner wall of the groove.
The beneficial effects of adopting the above technical scheme are: the rotating connection is realized through the rotating matching of the rotating shaft and the inner wall of the groove.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the utility model, the positioning sleeves on the two sides of the elastic centralizer body are adjusted to rotate towards the elastic centralizer, the positioning sleeves on the two sides extrude the spring pieces of the elastic centralizer body, so that the spring pieces are deformed and protrude outwards, and the spring pieces are distributed in the circumferential direction; the fixed casing throughbore is used to place a casing or instrument so that the casing or instrument is centered in the wellbore.
2. The utility model can adjust the projection amplitude of the spring leaf through the positioning sleeve, thereby being suitable for different well bores, and meanwhile, the elastic centralizer body can be adjusted in real time according to the requirement through the positioning sleeve, thereby reducing the probability of damage.
Drawings
FIG. 1 is a schematic view of a spring centralizer;
FIG. 2 is a schematic structural view of the elastic centralizer body;
FIG. 3 is a schematic illustration of the results of securing the cannula;
fig. 4 is a schematic structural view of the spring plate.
In the figure: 1-fixed sleeve, 11-first thread section, 12-connecting section, 13-second thread section, 2-elastic centralizer body, 21-first mounting seat, 22-second mounting seat, 23-spring piece, 231-rotating shaft, 24-spring, 25-groove, 3-positioning sleeve and 4-limiting sleeve.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Examples
As shown in fig. 1 to 2, a spring centralizer includes: the device comprises a fixed sleeve 1, an elastic centralizer body 2 sleeved on the outer wall of the fixed sleeve 1 and a positioning sleeve 3 which is in threaded connection with the outer wall of the fixed sleeve 1, is positioned on two sides of the elastic centralizer body 2 and is used for fixing the elastic centralizer body 2, wherein a through hole is axially formed in the fixed sleeve 1 and is used for placing a sleeve or an instrument; the positioning sleeve 3 is used for positioning and fixing the elastic centralizer body 2 by rotating towards the elastic centralizer body 2.
The elastic centralizer body 2 comprises a first mounting seat 21 and a second mounting seat 22 which are respectively sleeved on the outer wall of the fixed sleeve 1, and a plurality of spring pieces 23 which are rotatably arranged between the first mounting seat 21 and the second mounting seat 22, wherein the spring pieces 23 are circumferentially distributed along the outer wall of the first mounting seat 21 and the outer wall of the second mounting seat 22, in the embodiment, the number of the spring pieces 23 is 3, and the spring pieces are uniformly circumferentially distributed between the outer wall of the first mounting seat 21 and the outer wall of the second mounting seat 22, and in other embodiments of the utility model, the number of the spring pieces 23 can be 2, 4, 5 and the like. When the positioning sleeve 3 is rotated and the first mounting seat 21 and the second mounting seat 22 move oppositely to generate axial displacement, the spring piece 23 protrudes outwards, the spring piece 23 is provided with a plurality of uniform arrangements, so that the sleeve or the instrument is positioned at a central position in a borehole, and the spring piece 23 has elasticity, so that the first mounting seat 21 and the second mounting seat 22 have opposite elasticity, and the elastic centralizer body 2 is fixed under the action of the positioning sleeve 3.
Be connected with spring 24 between first mount pad 21 and the second mount pad 22, spring 24 cover is established at the outer wall of fixed sleeve 1, and the length of spring 24 and the length phase-match of spring leaf 23, spring 24 is used for restricting the extruded degree of first mount pad 21 and second mount pad 22 location sleeve 3, and supplementary first mount pad 21 and the second mount pad 22 support, when needs reset elastic centralizer body 2, rotatory location sleeve 3 moves to both sides, spring 24 can promote first mount pad 21 and the reset of second mount pad 22 this moment, and make spring leaf 23 reset.
As shown in fig. 3, the fixing sleeve 1 includes a first thread section 11, a connecting section 12 and a second thread section 13 which are connected in sequence, the inner diameter of the first mounting seat 21 and the inner diameter of the second mounting seat 22 are respectively greater than the outer diameter of the first thread section 11, the outer diameter of the connecting section 12 and the outer diameter of the second thread section 13, and the positioning sleeve 3 is respectively in threaded connection with the outer wall of the first mounting seat 21 and the outer wall of the second mounting seat 22, so that the positioning sleeve 3 can smoothly push the first mounting seat 21 and the second mounting seat 22.
The tip that the linkage segment 12 was kept away from to first screw thread section 11, the tip that the linkage segment 12 was kept away from to second screw thread section 13 are connected with limit sleeve 4 respectively, limit sleeve 4 and fixed sleeving 1's through-hole intercommunication, limit sleeve 4 is used for limiting spring centralizer body 2 and position sleeve 3's position, the connecting hole that matches with fixed sleeving 1's through-hole diameter is seted up to the axial on limit sleeve 4, be convenient for sleeve pipe or instrument can pass through smoothly.
As shown in fig. 2 and 4, the outer wall of the first mounting seat 21 and the outer wall of the second mounting seat 22 are respectively provided with a groove 25 in the circumferential direction, and the spring piece 23 is rotatably connected with the groove 25.
The two ends of the spring plate 23 are respectively provided with a rotating shaft 231 which is rotatably matched with the inner wall of the groove 25. The inner walls of the two sides of the groove 25 are provided with fixing holes matched with the rotating shaft 231, so that the rotating shaft 231 can smoothly rotate with the inner wall of the groove 25, and the spring piece 23 can be conveniently adjusted.
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 (6)
1. A spring centralizer, comprising: the device comprises a fixed sleeve (1), an elastic centralizer body (2) sleeved on the outer wall of the fixed sleeve (1), and a positioning sleeve (3) which is in threaded connection with the outer wall of the fixed sleeve (1), is positioned on two sides of the elastic centralizer body (2) and is used for fixing the elastic centralizer body (2), wherein a through hole is axially formed in the fixed sleeve (1);
elasticity centralizer body (2) are established including establishing respectively the first mount pad (21) and second mount pad (22) of fixed sleeve (1) outer wall and rotate and set up first mount pad (21) with a plurality of spring leaf (23) between second mount pad (22), spring leaf (23) are followed the outer wall of first mount pad (21) with the outer wall circumferential direction of second mount pad (22) distributes.
2. The spring centralizer according to claim 1, characterized in that a spring (24) is connected between the first mounting seat (21) and the second mounting seat (22), the spring (24) is sleeved on the outer wall of the fixed sleeve (1), and the length of the spring (24) is matched with that of the spring piece (23).
3. The spring centralizer according to claim 1, characterized in that the fixing sleeve (1) comprises a first threaded section (11), a connecting section (12) and a second threaded section (13) which are connected in sequence, the inner diameter of the first mounting seat (21) and the inner diameter of the second mounting seat (22) are respectively larger than the outer diameter of the first threaded section (11), the outer diameter of the connecting section (12) and the outer diameter of the second threaded section (13), and the positioning sleeve (3) is respectively in threaded connection with the outer wall of the first mounting seat (21) and the outer wall of the second mounting seat (22).
4. The spring centralizer according to claim 3, characterized in that the end of the first thread section (11) far away from the connecting section (12) and the end of the second thread section (13) far away from the connecting section (12) are respectively connected with a limiting sleeve (4), and the limiting sleeve (4) is communicated with the through hole of the fixing sleeve (1).
5. The spring centralizer according to any one of claims 1 to 4, characterized in that the outer wall of the first mounting seat (21) and the outer wall of the second mounting seat (22) are respectively provided with a groove (25) in the circumferential direction, and the spring piece (23) is rotatably connected with the groove (25).
6. A spring centraliser according to claim 5, wherein the spring plate (23) is provided at each end with a pivot shaft (231) which is in rotational engagement with an inner wall of the recess (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220682626.5U CN216894286U (en) | 2022-03-25 | 2022-03-25 | Spring centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220682626.5U CN216894286U (en) | 2022-03-25 | 2022-03-25 | Spring centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216894286U true CN216894286U (en) | 2022-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220682626.5U Active CN216894286U (en) | 2022-03-25 | 2022-03-25 | Spring centralizer |
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| CN (1) | CN216894286U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126424A (en) * | 2022-08-05 | 2022-09-30 | 东营政阳自动化科技有限公司 | Oil field is with oil recovery centralizer in pit |
-
2022
- 2022-03-25 CN CN202220682626.5U patent/CN216894286U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126424A (en) * | 2022-08-05 | 2022-09-30 | 东营政阳自动化科技有限公司 | Oil field is with oil recovery centralizer in pit |
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