CN216741394U - Underground pipe column centralizer - Google Patents
Underground pipe column centralizer Download PDFInfo
- Publication number
- CN216741394U CN216741394U CN202220385494.XU CN202220385494U CN216741394U CN 216741394 U CN216741394 U CN 216741394U CN 202220385494 U CN202220385494 U CN 202220385494U CN 216741394 U CN216741394 U CN 216741394U
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- CN
- China
- Prior art keywords
- sleeve
- righting
- groove
- centralizer
- sliding
- 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.)
- Expired - Fee Related
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- 239000004576 sand Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 4
- 239000011324 bead Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 1
- 230000000295 complement effect Effects 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 241001331845 Equus asinus x caballus Species 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Abstract
The utility model belongs to the technical field of oil exploitation downhole tools, and particularly relates to a downhole tubular column centralizer which comprises a centralizing sleeve, wherein sleeve chamfers are symmetrically arranged at the edges of the upper end and the lower end of the centralizing sleeve, outer balls are arranged on the inner side of a rotating outer groove, a rotating inner groove is arranged on the inner side of the centralizing sleeve, inner balls are arranged on the inner side of the rotating inner groove, a centralizing convex strip is arranged on the outer ring of the centralizing sleeve, a connecting through hole is arranged on the inner side of the centralizing convex strip, a sliding clamping block is arranged at the front end of a return spring, a clamping plate is arranged at the front end of the sliding clamping block, clamping end blocks are symmetrically arranged at the upper end and the lower end of the clamping plate, when an oil pipe is inserted into the centralizing sleeve, the oil pipe can be conveniently and continuously inserted, and the centralizer is used for auxiliary fixation of the oil pipe through the arrangement of the clamping end blocks, so that the centralizer is prevented from being arranged on the outer wall of the oil pipe, And the lower part moves, thereby improving the stability of the centralizer.
Description
Technical Field
The utility model belongs to the technical field of oil exploitation underground tools, and particularly relates to an underground tubular column centralizer.
Background
In the case of an oil well, a tubing string is arranged in a sleeve, a sucker rod string is arranged in an oil pipe, a mule head of the oil pumping unit is connected with a polished rod through a rope hanger to drive the sucker rod string and a piston to move up and down to pump oil, and the tubing string shakes and the sucker rod string vibrates during oil pumping production due to hundreds of meters or even thousands of meters of the tubing, so that the inside and the outside of the oil pipe are worn, the tubing is worn and perforated, the leakage of the oil pipe is caused, the production of the oil well is stopped in serious cases, and the tubing string is required to be arranged in a centralizer. The centralizers can be divided into two categories according to styles, namely elastic centralizers and rigid centralizers, cast steel, cast aluminum, resin and the like according to materials, roller type centralizers, sliding block type centralizers, automatic reversing type centralizers and the like according to structures, and centralizers with different structures and materials are suitable for oil wells with different types of eccentric wear. The shell of the traditional centralizer is usually of a split structure, is easy to scatter, weak in centralizing force and weak in spot, and is easy to break and block when being put into a horizontal well section; secondly the friction of traditional centralizer in the transfer in-process and the wall of a well is great, produces the removal under the effect of friction power easily at the in-process that goes into the well, and the reliability is relatively poor.
SUMMERY OF THE UTILITY MODEL
The utility model provides a downhole tubular column centralizer which has the characteristics that through the arrangement of a centralizing convex strip and a centralizing sleeve which are of an integrally formed structure, the centralizer has stronger plastic deformation resistance and can provide better centralizing force, through the arrangement of a connecting through hole, the centralizer is fixed on a wall body on the outer side of an oil pipe, when the oil pipe is inserted into the centralizer, the outer side wall body of the oil pipe is in mutual contact with an inner rolling bead, and the friction force between the centralizer and the outer side wall body of the oil pipe and between the centralizer and the outer side wall body of the oil pipe is reduced, so that the oil pipe can pass through the centralizer more easily.
The utility model provides the following technical scheme: a downhole tubular column centralizer comprises a centralizing sleeve, sleeve chamfers are symmetrically arranged on the edges of the upper end and the lower end of the centralizing sleeve, a sliding inner groove is arranged on the inner side of the righting sleeve, a return spring is arranged on the inner side of the sliding inner groove, the inner side of the righting sleeve is provided with a rotary outer groove, the inner side of the rotary outer groove is provided with an outer ball, a rotating inner groove is arranged at the inner side of the righting sleeve, an inner ball is arranged at the inner side of the rotating inner groove, the outer ring of the centralizing sleeve is provided with a centralizing convex strip, the inner side of the centralizing convex strip is provided with a connecting through hole, a centralizing channel is formed between every two adjacent centralizing convex strips, a sliding fixture block is arranged at the front end of the return spring, a clamping plate is arranged at the front end of the sliding fixture block, the upper end and the lower end of the clamping plate are symmetrically provided with clamping end blocks, and the inner side of the righting sleeve is provided with an oil pipe.
The centering sleeve is of a cylindrical structure, and the sleeve chamfer and the centering sleeve are of an integrally formed structure; through the setting of righting the sleeve for to the righting work of oil pipe, and then guarantee the safety of oil borehole operation.
The sliding inner groove is a groove body with a cylindrical structure, the diameter of an inner ring of the sliding inner groove is matched with the diameter of an outer ring of a sliding fixture block, and the sliding fixture block is arranged in the cylindrical structure; when the sliding clamping block is pressed by the clamping plate, the sliding clamping block slides towards the bottom of the sliding inner groove under the action of the pressure, the return spring is extruded in the process, and then the return spring contracts under the action of the acting force.
The overlooking cross section of the rotating outer groove is of an arc structure, the outer balls are of a spherical solid structure, the outer balls are embedded in the rotating outer groove and can roll on the inner side of the rotating outer groove, and the number of the outer balls is four; the in-process of transferring the centralizer is through the setting of outer ball, as with the wall of a well mutual contact, and then can reduce the mutual frictional force of centralizer and wall of a well to be used for guaranteeing the smoothness nature that the centralizer used.
The overlooking cross section of the rotating inner groove is of an arc structure, the inner balls are of a spherical solid structure, the number of the inner balls is the same as that of the outer balls, the inner balls are embedded in the rotating inner groove, and the inner balls can roll on the inner side of the rotating inner groove; when inserting oil pipe centralizer, the lateral wall body and the interior ball of oil pipe contact each other, and then reduce centralizer and oil pipe lateral wall body and mutual frictional force to make oil pipe easier pass through the centralizer.
The centering protruding strips are four in number, the four centering protruding strips and the centering sleeve are arranged in an integrally formed structure, the number of the connecting through holes is twice that of the centering protruding strips, and each connecting through hole penetrates through the centering protruding strips and the centering sleeve simultaneously; all set up as the integrated into one piece structure with the sleeve of righting through righting the sand grip, make the anti plastic deformation ability of centralizer stronger, and then can provide better righting power, through connect the hole's setting for fix the centralizer on the wall body in the oil pipe outside.
The front end of the return spring is fixedly connected with the inner wall of the sliding inner groove, and the tail end of the return spring is fixedly connected with the tail end of the sliding clamping block; when reset spring received pressure, reset spring carried out corresponding shrink motion, then reached balanced back as the acting force, reset spring produced opposite effort to the slip fixture block, and then realized that the grip block is fixed to the supplementarily of oil pipe.
The clamping plates and the clamping end block are arranged in an integrally formed structure, the clamping plates are provided with four clamping plates, and the clamping plates are fixedly connected with the sliding clamping blocks; when injecting oil pipe into the sleeve of righting, through the setting of centre gripping end block, the continuation of the oil pipe of being convenient for inserts for through the setting of grip block, be used for complementary fixed to oil pipe, and then avoid the upper and lower drunkenness of centralizer at the oil pipe outer wall, thereby improved the stability of centralizer.
The utility model has the beneficial effects that: in the process of putting the centralizer down, the centralizer is in contact with the well wall through the arrangement of the outer balls, so that the friction force between the centralizer and the well wall can be reduced, the use fluency of the centralizer is guaranteed, when an oil pipe is inserted into the centralizer, the outer side wall body of the oil pipe is in contact with the inner balls, the friction force between the centralizer and the outer side wall body of the oil pipe is reduced, the oil pipe can more easily pass through the centralizer, the centralizer is in integral forming structure arrangement with the centralizing sleeve through the centralizing raised lines, the plastic deformation resistance of the centralizer is stronger, better centralizing force can be provided, the centralizer is fixed on the wall body outside the oil pipe through the arrangement of the connecting through holes, when the reset spring is under pressure, the reset spring performs corresponding shrinkage movement, and then when the acting force reaches balance, the reset spring generates opposite acting force to the sliding fixture block, and then realize that the grip block is fixed to the complementary of oil pipe, when inciting somebody to action oil pipe right the sleeve, through the setting of centre gripping end block, the continuation of the oil pipe of being convenient for inserts for complementary fixed to oil pipe through the setting of grip block, and then avoid the centralizer in the upper and lower drunkenness of oil pipe outer wall, thereby improved the stability of centralizer.
The parts of the device not involved are the same as or can be implemented using prior art.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic top cross-sectional view of the present invention;
FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3;
FIG. 5 is a front view of the clamping plate 12 of the present invention;
in the figure: 1. righting the sleeve; 2. chamfering the sleeve; 3. a sliding inner groove; 4. rotating the outer trough; 5. rotating the inner groove; 6. righting the convex strip; 7. a connecting through hole; 8. righting the channel; 9. an inner ball; 10. a return spring; 11. sliding the clamping block; 12. a clamping plate; 13. a clamping end block; 14. an outer ball; 15. and (4) an oil pipe.
Detailed Description
Referring to fig. 1-5, the present invention provides the following technical solutions: a tubular column centralizer in pit, includes righting sleeve 1, the border symmetry at the upper and lower both ends of righting sleeve 1 is provided with sleeve chamfer 2, righting sleeve 1 inboard is provided with slip inside groove 3, the inboard of slip inside groove 3 is provided with reset spring 10, righting sleeve 1 inboard is provided with rotates the kerve 4, the inboard of rotating the kerve 4 is provided with outer ball 14, righting sleeve 1 inboard is provided with rotates inside groove 5, the inboard of rotating inside groove 5 is provided with interior ball 9, the outer lane of righting sleeve 1 is provided with righting sand grip 6, the inboard of righting sand grip 6 is provided with connect the through-hole 7, form between every two adjacent righting sand grip 6 and right the passageway 8, reset spring 10's front end is provided with slide fixture block 11, slide fixture block 11's front end is provided with grip block 12, grip block 12's last, Clamping end blocks 13 are symmetrically arranged at the lower two ends, and an oil pipe 15 is arranged on the inner side of the centralizing sleeve 1.
In this embodiment: the centering sleeve 1 is arranged in a cylindrical structure, and the sleeve chamfer 2 and the centering sleeve 1 are arranged in an integrally formed structure; through the setting of righting sleeve 1 for the righting work to oil pipe 15, and then guarantee the safety of oil borehole operation.
The sliding inner groove 3 is a groove body with a cylindrical structure, the diameter of the inner ring of the sliding inner groove 3 is matched with that of the outer ring of the sliding fixture block 11, and the sliding fixture block 11 is arranged in a cylindrical structure; when the sliding block 11 is pressed by the clamping plate 12, the sliding block 11 slides to the bottom of the sliding inner groove 3 under the pressure, and meanwhile, the return spring 10 is pressed in the process, and then the return spring 10 contracts under the action of the pressure.
The overlooking cross section of the rotating outer groove 4 is in an arc structure, the outer balls 14 are in a spherical solid structure, the outer balls 14 are embedded in the rotating outer groove 4, the outer balls 14 can roll on the inner side of the rotating outer groove 4, and the number of the outer balls 14 is four; the in-process of transferring the centralizer, through outer ball 14's setting, be used for with the wall of a well mutual contact, and then can reduce the mutual frictional force of centralizer and wall of a well to be used for guaranteeing the smoothness nature that the centralizer used.
The overlooking cross section of the rotary inner groove 5 is in an arc structure, the inner balls 9 are in a spherical solid structure, the number of the inner balls 9 is the same as that of the outer balls 14, the inner balls 9 are embedded in the inner side of the rotary inner groove 5, and the inner balls 9 can roll on the inner side of the rotary inner groove 5; when inserting oil pipe 15 into the centralizer, the lateral wall body of oil pipe 15 and interior ball 9 contact each other, and then reduce centralizer and oil pipe 15 lateral wall body and mutual frictional force to make oil pipe 15 easier pass through the centralizer.
The number of the righting convex strips 6 is four, the four righting convex strips 6 and the righting sleeve 1 are arranged in an integrated structure, the number of the connecting through holes 7 is twice that of the righting convex strips 6, and each connecting through hole 7 penetrates through the righting convex strips 6 and the righting sleeve 1 simultaneously; all set up as integrated into one piece structure with sleeve 1 of righting through righting sand grip 6, make the anti plastic deformation ability of centralizer stronger, and then can provide better righting power, through connect the setting of through hole 7 for fix the centralizer on the wall body in the oil pipe 15 outside.
The front end of the return spring 10 is fixedly connected with the inner wall of the sliding inner groove 3, and the tail end of the return spring 10 is fixedly connected with the tail end of the sliding fixture block 11; when the return spring 10 is stressed, the return spring 10 performs corresponding contraction movement, and then after the acting force reaches balance, the return spring 10 generates opposite acting force on the sliding fixture block 11, so that auxiliary fixing of the clamping plate 12 on the oil pipe 15 is realized.
The clamping plate 12 and the clamping end block 13 are arranged in an integrally formed structure, the clamping plate 12 is provided with four clamping blocks, and the clamping plate 12 is fixedly connected with the sliding fixture block 11; when inserting oil pipe 15 into righting sleeve 1, through the setting of clamping end block 13, be convenient for oil pipe 15's continuation is inserted for supplementary fixed to oil pipe 15 through the setting of grip block 12, and then avoid the upper and lower drunkenness of centralizer at oil pipe 15 outer wall, thereby improved the stability of centralizer.
The working principle and the using process of the utility model are as follows: when the centralizer is used, when the oil pipe 15 is inserted into the centralizing sleeve 1, the oil pipe 15 is conveniently and continuously inserted through the arrangement of the clamping end block 13, the outer side wall body of the oil pipe 15 is contacted with the inner rolling balls 9, so that the friction force between the centralizer and the outer side wall body of the oil pipe 15 and between the centralizer and the outer side wall body of the oil pipe 15 is reduced, the oil pipe 15 can more easily pass through the centralizer, after the sliding fixture block 11 is pressed by the clamping plate 12, the sliding fixture block 11 slides towards the bottom of the sliding inner groove 3 under the action of the pressure, and meanwhile, the resetting spring 10 is extruded in the process, then the resetting spring 10 is contracted under the action of the action, after the action force is balanced, the resetting spring 10 generates opposite action force on the sliding fixture block 11, so that the clamping plate 12 can realize auxiliary fixing of the oil pipe 15, and is used for auxiliary fixing of the oil pipe 15 through the arrangement of the clamping plate 12, and then avoid the centralizer on the wall body in the 15 outer walls of oil pipe, the lower float, setting through connect the through-hole 7, be used for fixing the centralizer on the wall body in the 15 outside of oil pipe, thereby the stability of centralizer has been improved, then the in-process of transferring the centralizer, through outer ball 14's setting, be used as and contact each other with the wall of a well, and then can reduce the mutual frictional force of centralizer and wall of a well, thereby be used for guaranteeing the smoothness nature that the centralizer used, all set up with righting sleeve 1 as an organic whole shaping structure through righting sand grip 6, make the anti plastic deformation ability of centralizer stronger, and then can provide better righting power.
Claims (8)
1. A tubular string centralizer, comprising: the device comprises a centering sleeve (1), a sleeve chamfer (2), a sliding inner groove (3), a rotating outer groove (4), a rotating inner groove (5), a centering convex strip (6), a connecting through hole (7), a centering channel (8), an inner rolling bead (9), a return spring (10), a sliding fixture block (11), a clamping plate (12), a clamping end block (13), an outer rolling bead (14) and an oil pipe (15); the method is characterized in that: the edge symmetry at the upper and lower both ends of righting sleeve (1) is provided with sleeve chamfer (2), the inboard of righting sleeve (1) is provided with slip inside groove (3), the inboard of slip inside groove (3) is provided with reset spring (10), the inboard of righting sleeve (1) is provided with rotation outside groove (4), the inboard of rotation outside groove (4) is provided with outer ball (14), the inboard of righting sleeve (1) is provided with rotation inside groove (5), the inboard of rotation inside groove (5) is provided with inner ball (9), the outer lane of righting sleeve (1) is provided with righting sand grip (6), the inboard of righting sand grip (6) is provided with connecting through hole (7), a righting channel (8) is formed between every two adjacent righting sand grips (6), the front end of reset spring (10) is provided with slip fixture block (11), the front end of the sliding clamping block (11) is provided with a clamping plate (12), the upper end and the lower end of the clamping plate (12) are symmetrically provided with clamping end blocks (13), and the inner side of the centering sleeve (1) is provided with an oil pipe (15).
2. A tubular string centralizer as claimed in claim 1, wherein: the righting sleeve (1) is of a cylindrical structure, and the sleeve chamfer (2) and the righting sleeve (1) are of an integrally formed structure.
3. A tubular string centralizer as claimed in claim 1, wherein: the sliding inner groove (3) is a groove body with a cylindrical structure, the diameter of an inner ring of the sliding inner groove (3) is matched with that of an outer ring of the sliding clamping block (11), and the sliding clamping block (11) is arranged in a cylindrical structure.
4. A tubular string centralizer as claimed in claim 1, wherein: the overlook cross section that rotates outer groove (4) sets up for the arc structure, outer ball (14) set up for ball type solid construction, the inboard of rotating outer groove (4) is installed to outer ball (14) embedded, just outer ball (14) can roll in the inboard of rotating outer groove (4), outer ball (14) are provided with four altogether.
5. A tubular string centralizer as claimed in claim 1, wherein: the overlooking cross section of the rotating inner groove (5) is of an arc-shaped structure, the inner balls (9) are of a spherical solid structure, the number of the inner balls (9) is the same as that of the outer balls (14), the inner balls (9) are embedded and installed on the inner side of the rotating inner groove (5), and the inner balls (9) can roll on the inner side of the rotating inner groove (5).
6. A tubular string centralizer as claimed in claim 1, wherein: righting sand grip (6) and being provided with four altogether, four righting sand grip (6) all set up with righting sleeve (1) as the integrated into one piece structure, the quantity of connect the via hole (7) is the twice of righting sand grip (6) quantity, every connect the via hole (7) all run through simultaneously and right sand grip (6) and right sleeve (1).
7. A tubular string centralizer as claimed in claim 1, wherein: the front end of the return spring (10) is fixedly connected with the inner wall of the sliding inner groove (3), and the tail end of the return spring (10) is fixedly connected with the tail end of the sliding clamping block (11).
8. A tubular string centralizer as claimed in claim 1, wherein: the clamping plate (12) and the clamping end block (13) are arranged in an integrally formed structure, four clamping plates (12) are arranged, and the clamping plates (12) are fixedly connected with the sliding clamping blocks (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220385494.XU CN216741394U (en) | 2022-02-25 | 2022-02-25 | Underground pipe column centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220385494.XU CN216741394U (en) | 2022-02-25 | 2022-02-25 | Underground pipe column centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216741394U true CN216741394U (en) | 2022-06-14 |
Family
ID=81919664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220385494.XU Expired - Fee Related CN216741394U (en) | 2022-02-25 | 2022-02-25 | Underground pipe column centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216741394U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929223A (en) * | 2023-02-24 | 2023-04-07 | 中煤科工西安研究院(集团)有限公司 | Underground drilling centralizing mechanism |
| CN117415587A (en) * | 2023-11-09 | 2024-01-19 | 潜江市联瑞石油机械有限公司 | Double-layer ball type centralizer and processing device thereof |
-
2022
- 2022-02-25 CN CN202220385494.XU patent/CN216741394U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115929223A (en) * | 2023-02-24 | 2023-04-07 | 中煤科工西安研究院(集团)有限公司 | Underground drilling centralizing mechanism |
| CN115929223B (en) * | 2023-02-24 | 2023-05-16 | 中煤科工西安研究院(集团)有限公司 | Underground drilling centralizing mechanism |
| CN117415587A (en) * | 2023-11-09 | 2024-01-19 | 潜江市联瑞石油机械有限公司 | Double-layer ball type centralizer and processing device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220614 |
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| CF01 | Termination of patent right due to non-payment of annual fee |