CN210858608U - Fixing device for casing centralizer - Google Patents
Fixing device for casing centralizer Download PDFInfo
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- CN210858608U CN210858608U CN201921119634.3U CN201921119634U CN210858608U CN 210858608 U CN210858608 U CN 210858608U CN 201921119634 U CN201921119634 U CN 201921119634U CN 210858608 U CN210858608 U CN 210858608U
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- centralizer
- locking
- casing
- sleeve pipe
- centraliser
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Abstract
The utility model provides a fixing device for sleeve pipe centralizer, including locking clamp and snap ring. Wherein, one of them one end of locking clamp can form the cooperation with the centralizer, and the both ends of centralizer are established respectively on two locking clamps to the centralizer can lock the clamp rotation relatively. One end of the locking hoop far away from the centralizer is sleeved on the sleeve. The snap ring is sleeved at one end of the locking hoop far away from the centralizer. The utility model provides a fixing device for sleeve pipe centralizer can the accurate positioning, thereby avoids centralizer and sleeve pipe body direct contact to prevent that the frictional force when centralizer is rotatory from damaging the sleeve pipe, and the installation is simple convenient.
Description
Technical Field
The utility model belongs to the technical field of directional drilling, concretely relates to a fixing device for sleeve pipe centralizer.
Background
With the development of directional drilling technology and highly deviated well drilling technology, the improvement of the cementing quality of directional wells, highly deviated wells and horizontal wells is a key technical problem influencing the development of directional well technology. In the well cementation operation, necessary righting measures are taken for the casing, so that the casing can be ensured to be smoothly put in, the displacement efficiency can be improved, and a cement sheath which is uniform and has a good sealing effect is ensured to be formed outside the casing. The existing casing centralizer has the problem that the centralizer is easy to damage due to the fact that the string of pipes rotates and is easy to drive to rotate, and the centralizer is in direct contact with the casing body, so that the safety of a well is affected.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome prior art not enough, thereby provide one kind can the accurate positioning and avoid centralizer and sleeve pipe body direct contact to prevent that frictional force when centralizer is rotatory from damaging sheathed tube fixing device that is used for sleeve pipe centralizer.
In order to solve the technical problem, the utility model provides a technical scheme does:
a securing device for a casing centralizer includes a locking clip and a snap ring. Wherein, one of them one end of locking clamp can form the cooperation with the centralizer, and the both ends of centralizer are established respectively on two locking clamps to the centralizer can lock the clamp rotation relatively. One end of the locking hoop far away from the centralizer is sleeved on the sleeve. The snap ring is sleeved at one end of the locking hoop far away from the centralizer.
According to the utility model discloses a fixing device for sleeve pipe centralizer uses through snap ring and locking clamp cooperation and can realize that the locking clamp holds the sleeve pipe tightly, consequently can guarantee that the appointed mounted position that the centralizer was fixed on the sleeve pipe does not take place drunkenness from top to bottom to it is rotatory not to influence the centralizer, thereby plays the effect of accurate location. In addition, because the centralizer cover is established on the locking clamp, can avoid centralizer and sleeve pipe body direct contact, frictional force when preventing the centralizer from rotatory causes the sleeve pipe to damage. Secondly, according to the utility model discloses a fixing device for sleeve pipe centralizer, the centralizer direct cover is established on the locking clamp, and the direct cover of locking clamp is established on the sleeve pipe, and the snap ring direct cover is established fixedly on the locking clamp, and it is extremely simple convenient to install.
With respect to the above technical solution, further improvements as described below can be made.
According to the utility model discloses a fixing device for sleeve pipe centralizer, in an preferred embodiment, the locking clamp is last to be equipped with horse tooth on keeping away from the one end surface of centralizer and to detain the pin thread, and the internal surface of snap ring is equipped with horse tooth and detains the box.
Through the cooperation mounting means of horse tooth mouth pin thread and horse tooth knot box, can use hydraulic means with snap ring direct mount on the locking clamp or through rotatory snap ring, make snap ring and locking clamp horse tooth buckle meshing, realize fixed, it is simple convenient to install.
Further, in a preferred embodiment, the locking clip is provided with knurled teeth on the inner surface of the end of the locking clip remote from the centralizer.
At locking clamp internal design knurling tooth, the gripping power that the knurling tooth can produce the sleeve pipe of holding tightly prevents locking clamp axial and circumferential motion to further ensure fixing device's the accurate nature in location.
Specifically, in one preferred embodiment, the knurled teeth are arranged in a circumferential array.
The even array of knurling tooth is arranged on the internal surface of locking clamp, can further strengthen the locking clamp to the power of hugging closely of sleeve pipe to ensure the sleeve pipe atress is even.
Further, in a preferred embodiment, the locking clamp is provided with axially extending slots uniformly along the circumferential direction at the end away from the centralizer.
The end part of the locking clamp with the dog buckle is provided with the groove, so that the deformation of the dog buckle end, which is necking in the locking process, can be released, and the applicability and the service life of the locking clamp can be increased.
Specifically, in a preferred embodiment, the number of slots is 8.
8 flutings are evenly arranged along the axial direction of the end part with the die button on the locking hoop, so that the structural strength of the locking hoop can be ensured, and the deformation of the die button end, which generates necking in the locking process, can be released.
Specifically, in a preferred embodiment, the snap ring is a cylindrical tubular structure.
The clamping ring is of a cylindrical tubular structure, is extremely simple in structure, convenient to install and low in production and manufacturing cost, and is particularly suitable for fixing the locking clamping ring.
Further, in a preferred embodiment, the locking clip is provided with a cylindrical step on its outer circumference capable of forming a fit with the end of the centralizer.
Through setting up cylindrical step, can play fine positioning action to centralizer in the axial to make whole fixing device's structure more reliable and more stable.
Specifically, in a preferred embodiment, the end of the locking clip that engages the centralizer is a cylindrical tubular structure.
The locking clamp is matched with the centralizer through a cylindrical tubular structure, and the locking clamp is simple in structure and convenient and fast to install.
Compared with the prior art, the utility model has the advantages of: can accurate positioning, thereby avoid centralizer and sleeve pipe body direct contact to prevent that frictional force when centralizer is rotatory from damaging the sleeve pipe, it is simple convenient to install.
Drawings
The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings. Wherein:
figure 1 schematically illustrates one overall effect of a fixing device for a casing centralizer according to an embodiment of the present invention;
figure 2 schematically illustrates another overall effect of a fixing device for a casing centralizer according to an embodiment of the present invention;
fig. 3 schematically shows a cross-sectional structure of a fixing device for a casing centralizer according to an embodiment of the present invention;
FIG. 4 schematically illustrates the overall structure of a locking clip of an embodiment of the present invention;
FIG. 5 schematically illustrates a partial cross-sectional view of a locking clip according to an embodiment of the present invention;
fig. 6 schematically shows the overall structure of a snap ring according to an embodiment of the present invention.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Detailed Description
The invention will be described in further detail with reference to the drawings and specific examples, without thereby limiting the scope of the invention.
Fig. 1 schematically shows an overall effect of a fixing device 10 for a casing centralizer according to an embodiment of the present invention. Figure 2 schematically illustrates another overall effect of a fixing device 10 for a casing centralizer according to an embodiment of the present invention. Fig. 3 schematically shows a cross-sectional structure of a fixing device 10 for a casing centralizer according to an embodiment of the present invention. Fig. 4 schematically shows the overall structure of the locking clip 1 according to the embodiment of the present invention. Fig. 5 schematically shows a partially cut-away structure of the locking clamp 1 according to an embodiment of the present invention. Fig. 6 schematically shows the overall structure of the snap ring 2 according to the embodiment of the present invention.
As shown in fig. 1 to 3, a fixing device 10 for a casing centralizer according to the present invention includes a locking clip 1 and a snap ring 2. Wherein, one of them one end of locking clamp 1 can form the cooperation with centralizer 3, and the both ends of centralizer 3 are established respectively on two locking clamps 1 to centralizer 3 can lock the rotation of clamp 1 relatively. One end of the locking clamp 1, which is far away from the centralizer 3, is sleeved on the sleeve. The snap ring 2 is sleeved at one end of the locking hoop 1 far away from the centralizer 3. According to the utility model discloses a fixing device for sleeve pipe centralizer uses through snap ring and locking clamp cooperation and can realize that the locking clamp holds the sleeve pipe tightly, consequently can guarantee that the appointed mounted position that the centralizer was fixed on the sleeve pipe does not take place drunkenness from top to bottom to it is rotatory not to influence the centralizer, thereby plays the effect of accurate location. In addition, because the centralizer cover is established on the locking clamp, can avoid centralizer and sleeve pipe body direct contact, frictional force when preventing the centralizer from rotatory causes the sleeve pipe to damage. Secondly, according to the utility model discloses a fixing device for sleeve pipe centralizer, the centralizer direct cover is established on the locking clamp, and the direct cover of locking clamp is established on the sleeve pipe, and the snap ring direct cover is established fixedly on the locking clamp, and it is extremely simple convenient to install.
As shown in fig. 6, specifically, in the present embodiment, the snap ring 2 has a cylindrical tubular structure. The clamping ring is of a cylindrical tubular structure, is extremely simple in structure, convenient to install and low in production and manufacturing cost, and is particularly suitable for fixing the locking clamping ring.
As shown in fig. 1 to 4, in the present embodiment, the locking clamp 1 is further provided with a cylindrical step 11 on the outer circumference capable of forming a fit with the end of the centralizer 3. Through setting up cylindrical step, can play fine positioning action to centralizer in the axial to make whole fixing device's structure more reliable and more stable. In particular, in this embodiment, the end of the locking clip 1 that engages the centralizer 3 is of cylindrical tubular construction. The locking clamp is matched with the centralizer through a cylindrical tubular structure, and the locking clamp is simple in structure and convenient and fast to install.
The utility model discloses a fixing device 10 for sleeve pipe centralizer, as shown in fig. 3 to 6, in a preferred embodiment, be equipped with horse teeth on the locking clamp 1 and detain pin thread 12 on keeping away from the one end surface of centralizer 3, the internal surface of snap ring 2 is equipped with horse teeth and detains box thread 21. Through the cooperation mounting means of horse tooth mouth pin thread and horse tooth knot box, can use hydraulic means with snap ring direct mount on the locking clamp or through rotatory snap ring, make snap ring and locking clamp horse tooth buckle meshing, realize fixed, it is simple convenient to install.
Further, in this embodiment, as shown in fig. 3 to 5, a knurled tooth 13 is provided on an inner surface of the locking clip 1 at an end remote from the centralizer 3. At locking clamp internal design knurling tooth, the gripping power that the knurling tooth can produce the sleeve pipe of holding tightly prevents locking clamp axial and circumferential motion to further ensure fixing device's the accurate nature in location. Specifically, in the present embodiment, the knurled teeth 13 are arranged in an array in the circumferential direction. The even array of knurling tooth is arranged on the internal surface of locking clamp, can further strengthen the locking clamp to the power of hugging closely of sleeve pipe to ensure the sleeve pipe atress is even.
Further, in the present embodiment, as shown in fig. 3 and 4, the locking clamp 1 is provided with axially extending slots 14 uniformly along the circumferential direction at the end far away from the centralizer 3. The end part of the locking clamp with the dog buckle is provided with the groove, so that the deformation of the dog buckle end, which is necking in the locking process, can be released, and the applicability and the service life of the locking clamp can be increased. Preferably, in the present embodiment, the number of the slots 14 is 8. 8 flutings are evenly arranged along the axial direction of the end part with the die button on the locking hoop, so that the structural strength of the locking hoop can be ensured, and the deformation of the die button end, which generates necking in the locking process, can be released.
According to the above embodiment, it is visible, the utility model relates to a friction damage sleeve pipe when avoiding centralizer and sleeve pipe body direct contact to prevent the centralizer rotation can accurate positioning by fixing device for sleeve pipe centralizer, and the installation is simple convenient.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not intended to be limited to the particular embodiments disclosed herein, but rather to include all embodiments falling within the scope of the appended claims.
Claims (9)
1. A fixing device for a casing centralizer is characterized by comprising a locking clamp and a clamping ring; wherein the content of the first and second substances,
one end of each locking hoop can be matched with a centralizer, two ends of each centralizer are sleeved on the two locking hoops respectively, and the centralizers can rotate relative to the locking hoops;
one end of the locking hoop, which is far away from the centralizer, is sleeved on the sleeve;
the snap ring is sleeved at one end, far away from the centralizer, of the locking clamp.
2. The mounting apparatus of claim 1, wherein the locking clip has a male locking tab on an outer surface of an end of the locking clip distal from the centralizer, and a female locking tab on an inner surface of the locking clip.
3. A mounting device for a casing centraliser according to claim 1 or 2, wherein the locking clip is provided with knurled teeth on an inner surface of an end of the locking clip remote from the centraliser.
4. A fixture for a casing centralizer according to claim 3, wherein the knurled teeth are arranged in a circumferential array.
5. A mounting arrangement for a casing centraliser according to claim 1 or 2, wherein the locking clip is provided with axially extending slots uniformly circumferentially at an end remote from the centraliser.
6. A fixation device for a casing centraliser according to claim 5, wherein the number of slots is 8.
7. A fixation device for a casing centraliser according to claim 1 or 2, wherein the snap ring is a cylindrical tubular structure.
8. A mounting device for a casing centraliser according to claim 1 or 2, wherein the locking clip is provided with a cylindrical step on its outer circumference capable of forming a fit with an end of the centraliser.
9. A mounting device for a casing centraliser according to claim 1 or 2, wherein the end of the locking clip that engages the centraliser is of cylindrical tubular construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921119634.3U CN210858608U (en) | 2019-07-16 | 2019-07-16 | Fixing device for casing centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921119634.3U CN210858608U (en) | 2019-07-16 | 2019-07-16 | Fixing device for casing centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210858608U true CN210858608U (en) | 2020-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921119634.3U Active CN210858608U (en) | 2019-07-16 | 2019-07-16 | Fixing device for casing centralizer |
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| CN (1) | CN210858608U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360360A (en) * | 2020-12-03 | 2021-02-12 | 中国石油集团渤海钻探工程有限公司 | Limit clamp of non-coupling casing centralizer |
-
2019
- 2019-07-16 CN CN201921119634.3U patent/CN210858608U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112360360A (en) * | 2020-12-03 | 2021-02-12 | 中国石油集团渤海钻探工程有限公司 | Limit clamp of non-coupling casing centralizer |
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