CN209924930U - Casing centralizer - Google Patents
Casing centralizer Download PDFInfo
- Publication number
- CN209924930U CN209924930U CN201920630638.1U CN201920630638U CN209924930U CN 209924930 U CN209924930 U CN 209924930U CN 201920630638 U CN201920630638 U CN 201920630638U CN 209924930 U CN209924930 U CN 209924930U
- Authority
- CN
- China
- Prior art keywords
- ball
- centralizer
- embedded
- casing
- spiral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model discloses a sleeve pipe centralizer, include: the centralizer body can be sleeved outside the sleeve; the spiral righting edge is spirally arranged on the centralizer main body; the embedded ball is rotatably installed in the spiral righting arris, and the embedded ball can be in rolling contact with the well wall. When using the utility model discloses a during sleeve pipe centralizer, carry out the operation of casing pipe with sleeve pipe centralizer suit in sheathed tube outside, because embedded ball is rotatable to be installed in the arris is right to the spiral, and embedded ball can with the wall of a well rolling contact, consequently, embedded ball is the rolling friction with the wall of a well, for the sliding friction of sleeve pipe centralizer with the wall of a well, has reduced the frictional force of sleeve pipe centralizer with the wall of a well, and then has reduced the frictional resistance of sleeve pipe running-in-process.
Description
Technical Field
The utility model belongs to the technical field of drilling engineering cementing tool technique and specifically relates to a sleeve pipe centralizer is related to.
Background
In the cementing operation of oil drilling, a casing centralizer is important for ensuring the centering degree of a casing in a borehole, and in order to ensure the cementing quality, the casing centralizer is usually installed outside the casing.
The contact mode of the existing casing centralizer and the well wall is sliding friction, the frictional resistance is large in the casing running-in process, and the problem of difficult running-in generally exists.
Therefore, how to reduce the frictional resistance during the casing running process is a technical problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a casing centralizer can reduce the frictional resistance of casing running-in-process.
In order to achieve the above object, the present invention provides the following solutions:
a casing centralizer, comprising:
the centralizer body can be sleeved outside the sleeve;
the spiral righting edge is spirally arranged on the centralizer main body;
the embedded ball is rotatably installed in the spiral righting edge and can be in rolling contact with the well wall.
In a particular embodiment, the casing centralizer further comprises a ball sleeve;
the spiral righting edge is provided with an installation groove, the ball sleeve is embedded into the installation groove, and the ball sleeve is used for limiting the embedded ball in the installation groove.
In another specific embodiment, the top end of the ball sleeve is provided with a through hole, and the diameter of the through hole is smaller than that of the embedded ball.
In another specific embodiment, a limiting part is arranged at the position, close to the through hole, of the ball sleeve, and the limiting part is used for limiting the embedded ball to slide along the mounting groove.
In another specific embodiment, the stop portion is a spherical structure.
In another specific embodiment, the casing centralizer further comprises a ball bearing;
the ball support is laid at the bottom of the mounting groove, a spherical groove is formed in the ball support, and the spherical groove is used for containing the embedded ball.
In another specific embodiment, the helical centering rib is integrally connected to the centralizer body.
In another specific embodiment, the number of the spiral centralizing ribs is multiple, and the spiral centralizing ribs are uniformly distributed along the axial line of the centralizer main body.
In another specific embodiment, the helix angle of the helical stabilizing ridge is greater than 0 ° and the helix angle of the helical stabilizing ridge is less than 30 °.
In another specific embodiment, the number of the embedded balls is multiple, and the embedded balls are uniformly distributed at equal intervals along the spiral righting edge.
According to the utility model discloses an each embodiment can make up as required wantonly, and the embodiment that obtains after these combinations is also in the utility model discloses the scope is the utility model discloses a part of the concrete implementation mode.
In a specific embodiment of the utility model, when using the utility model discloses a during sleeve pipe centralizer, carry out the operation of casing pipe with sleeve pipe centralizer suit in sheathed tube outside, because embedded ball is rotatable to be installed in the arris is right to the spiral, and embedded ball can with the wall of a well rolling contact, consequently, embedded ball is the rolling friction with the wall of a well, for the sliding friction of sleeve pipe centralizer with the wall of a well, has reduced the frictional force of sleeve pipe centralizer with the wall of a well, and then has reduced the frictional resistance of sleeve pipe income in-process.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without any novelty.
Fig. 1 is a schematic front view of the casing centralizer provided by the present invention;
fig. 2 is a schematic view of the top view structure of the casing centralizer provided by the present invention.
Wherein, in fig. 1-2:
the centralizer body 1, spiral righting arris 2, embedded ball 3, ball cover 4, spacing portion 401, ball support 5.
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 making novelty work belong to the protection scope of the present invention.
Example one
As shown in fig. 1-2, the present invention provides a casing centralizer. The casing centralizer comprises a centralizer body 1, a spiral centralizing edge 2 and an embedded ball 3.
The centralizer main body 1 is cylindrical, and the centralizer main body 1 can be sleeved outside the sleeve.
The number of the spiral righting edges 2 is not limited. The spiral righting edge 2 is spirally arranged outside the centralizer main body 1, and the spiral righting edge 2 is spirally arranged around the axial lead of the centralizer main body 1.
The spiral righting edge 2 and the centralizer body 1 can be integrally formed and connected, and can also be detachably connected through screws and the like.
Embedded ball 3 is rotatable to be installed in the screw righting arris 2, and when embedded ball 3 was located the screw righting arris 2, embedded ball 3 was higher than the screw righting arris 2 for embedded ball 3 can expose the screw righting arris 2, and then makes embedded ball 3 can with the wall of a well rolling contact, be rolling friction between embedded ball 3 and the wall of a well promptly.
When the casing centralizer is used, the casing centralizer is sleeved outside a casing to be subjected to casing running operation, the embedded ball 3 is rotatably arranged in the spiral centralizing rib 2 and can be in rolling contact with the well wall, so that the embedded ball 3 and the well wall are in rolling friction, and compared with the sliding friction between the casing centralizer and the well wall, the friction between the casing centralizer and the well wall is reduced, and further the friction resistance in the casing running process is reduced.
Example two
The utility model provides a second embodiment, the structure of the sleeve pipe centralizer in this embodiment and the sleeve pipe centralizer in embodiment one is similar, just no longer has been repeated the same place, only introduces the difference.
In this embodiment, the utility model discloses a sleeve pipe centralizer still includes ball cover 4, has seted up the mounting groove on arris 2 is right to the spiral, and the mounting groove sets up along the spiral direction that arris 2 was right to the spiral. The ball sleeve 4 is embedded into the mounting groove, and the embedded ball 3 is rotatably mounted in the ball sleeve 4.
Specifically, ball cover 4 is square tube-shape, and the back-off is in the mounting groove, and two cell walls of mounting groove are embedded into respectively to two lateral walls of ball cover 4, and the through-hole has been seted up on the top of ball cover 4, and the diameter of through-hole is less than embedded ball 3's diameter, on the one hand, can block embedded ball 3, and on the other hand can expose embedded ball 3 partly for embedded ball 3 can with the wall of a well rolling contact.
Further, the utility model discloses a ball cover 4 is close to through-hole department and is provided with spacing portion 401 that spacing embedded ball 3 slided, prevents that the ball from sliding along the mounting groove.
Specifically, the utility model discloses a spacing portion 401 is spherical structure. The size of spherical structure slightly is greater than embedded ball 3 by the size of spacing department, avoids embedded ball 3 to rock in the mounting groove. The distance between the two parallel side walls of the ball sleeve 4 below the limiting portion 401 is larger than the diameter of the embedded ball 3.
The stopper 401 may have a tapered structure.
Further, the utility model discloses a sleeve pipe centralizer still includes ball support 5, and ball support 5 lays in the bottom of mounting groove, and has offered spherical recess on ball support 5, and spherical recess is used for holding embedded ball 3, and on the one hand, spherical recess has further avoided sliding of embedded ball 3 in the mounting groove, and on the other hand provides great holding power for embedded ball 3. In particular, the ball receptacle 5 is located inside the inside of the ball housing 4.
Further, the utility model discloses a arris 2 is right to the spiral and is connected with 1 integrated into one piece of ware main part of right, the manufacturing of being convenient for.
Further, the utility model discloses a number that arris 2 was right to the spiral is a plurality of, and along the axial lead equipartition of centralizer main part 1, and the gyration that arris 2 was right to a plurality of spirals is the same. Specifically, the number of the spiral centralizing arrises 2 is not less than 3.
Further, the utility model discloses a helix angle that arris 2 was right to the spiral is greater than 0, and the helix angle that arris 2 was right to the spiral is less than 30.
Further, the utility model discloses an embedded ball 3's number is a plurality of, and rights 2 equidistance equipartitions of arris along the spiral.
In this embodiment, the number of the embedded balls 33, the ball sleeves 4 and the ball holders 5 embedded in each spiral righting edge 2 is the same, and is 4 to 8, and the embedded balls are distributed at equal intervals along the spiral righting edge 2.
When the casing centralizer is used, the casing centralizer is sleeved outside a casing and casing running operation is carried out, and the embedded ball 3 protrudes out of the outer surface of the spiral centralizing arris 2, so that the embedded ball 3 can be firstly contacted with a well wall; because the distance between the two parallel side walls of the ball sleeve 4 below the limiting part 401 is greater than the diameter of the embedded ball 3, the embedded ball 3 can freely rotate in all directions, and therefore the frictional resistance with the well wall in all directions can be reduced; because the diameter of the through hole formed at the top end of the ball sleeve 4 is smaller than that of the embedded ball 3, and the ball sleeve 4 is embedded in the spiral righting arris 2 and is fixedly connected with the spiral righting arris, the embedded ball 3 cannot fall off from the ball sleeve 4; because the ball support 5 is positioned inside the ball sleeve 4, and the part of the ball support contacting with the ball is a spherical groove, the ball support can provide larger bearing force for the embedded ball 3, and the rolling failure can not occur even if the weight of the casing string is larger.
It should be noted that the terms indicating the orientation herein, such as inside and outside, are set in the direction of the description with reference to fig. 1, and are used for convenience of description only and do not have other specific meanings.
It is also noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in an article or device that comprises the element.
The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the core concepts of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. A casing centralizer, comprising:
the centralizer comprises a centralizer body (1), wherein the centralizer body (1) can be sleeved outside a sleeve;
the spiral righting edge (2) is spirally arranged on the centralizer main body (1);
embedded ball (3), embedded ball (3) rotatable install in the arris (2) is right to the spiral, just embedded ball (3) can with the wall of a well rolling contact.
2. A casing centraliser according to claim 1, further comprising a ball sleeve (4);
the spiral righting edge (2) is provided with an installation groove, the ball sleeve (4) is embedded into the installation groove, and the ball sleeve (4) is used for limiting the embedded ball (3) in the installation groove.
3. Casing centraliser according to claim 2, characterised in that the ball sleeve (4) is perforated at its top end with a diameter smaller than the diameter of the embedded ball (3).
4. A casing centraliser according to claim 3, characterised in that the ball housing (4) is provided with a stop portion (401) near the through hole, the stop portion (401) being adapted to stop the embedded ball (3) from sliding along the mounting groove.
5. A casing centraliser according to claim 4, wherein the stop portion (401) is of a spherical configuration.
6. A casing centraliser according to any one of claims 2-5, further comprising a ball holder (5);
the ball support (5) is laid at the bottom of the mounting groove, a spherical groove is formed in the ball support (5), and the spherical groove is used for containing the embedded ball (3).
7. Casing centralizer according to claim 1, characterized in that the helical centralizing ribs (2) are integrally connected with the centralizer body (1).
8. Casing centralizer according to claim 1, characterized in that said helical centralizing ribs (2) are plural and are uniformly distributed along the axial centre line of said centralizer body (1).
9. Casing centralizer according to claim 1, characterized in that the helix angle of the helical centralizing rib (2) is larger than 0 ° and the helix angle of the helical centralizing rib (2) is smaller than 30 °.
10. Casing centraliser according to any one of claims 1-5, 7-9, characterised in that the number of embedded balls (3) is multiple and equally distributed along the helical righting edge (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920630638.1U CN209924930U (en) | 2019-05-05 | 2019-05-05 | Casing centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920630638.1U CN209924930U (en) | 2019-05-05 | 2019-05-05 | Casing centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209924930U true CN209924930U (en) | 2020-01-10 |
Family
ID=69089610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920630638.1U Active CN209924930U (en) | 2019-05-05 | 2019-05-05 | Casing centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209924930U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911091A (en) * | 2020-08-27 | 2020-11-10 | 盘锦恒奥瑞佳实业有限公司 | Integral solderless ball centralizer |
| CN113680891A (en) * | 2020-05-19 | 2021-11-23 | 四川精创通信网络维护有限公司 | Hydraulic punching machine capable of precisely punching |
-
2019
- 2019-05-05 CN CN201920630638.1U patent/CN209924930U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113680891A (en) * | 2020-05-19 | 2021-11-23 | 四川精创通信网络维护有限公司 | Hydraulic punching machine capable of precisely punching |
| CN111911091A (en) * | 2020-08-27 | 2020-11-10 | 盘锦恒奥瑞佳实业有限公司 | Integral solderless ball centralizer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209924930U (en) | Casing centralizer | |
| EP1781894B1 (en) | Downhole device | |
| US20100276138A1 (en) | Low Friction Centralizer | |
| EP3025012B1 (en) | Wireline roller standoff | |
| US9297209B1 (en) | Bidirectional stabilizer | |
| CN203925330U (en) | Righting drag reduction adapter | |
| US10385627B2 (en) | Active waterway stabilizer | |
| CN215979246U (en) | Rotatable elasticity centralizer of sleeve pipe direct-connected type and elasticity righting equipment | |
| CN108798575B (en) | Drilling coring device and implementation method | |
| CN203129980U (en) | Roll ball centering device | |
| CN204571862U (en) | A kind of ball locking ring device | |
| CN201354595Y (en) | Double-acting stabilizer for reducing resistance and torsion | |
| EP3173531A1 (en) | Apparatus for soil testing | |
| CN102359350A (en) | Centering device | |
| CN210948528U (en) | Centralizer | |
| CN212985136U (en) | Elastic centralizer | |
| CN208825634U (en) | A kind of deep drilling bit | |
| CN212079251U (en) | Fisher and oil well cleaning device | |
| CN212540737U (en) | A drilling high density electrical method detecting device for monitoring collapse post structure activation | |
| CN209990455U (en) | Ball centralizer | |
| CN204371124U (en) | Drilling well drag reduction falls turns round stabilizer | |
| CN221782457U (en) | Embedding device | |
| CN113586035B (en) | Protection device for measuring probe of microsphere logging instrument and microsphere logging instrument | |
| EP2952674A1 (en) | Rotating downhole logging tool with reduced torque | |
| CN208816058U (en) | A kind of centralizer for petroleum logging instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |