CN210564397U - Oil production downhole tubular column centralizing anti-drop device - Google Patents
Oil production downhole tubular column centralizing anti-drop device Download PDFInfo
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- CN210564397U CN210564397U CN201920164874.9U CN201920164874U CN210564397U CN 210564397 U CN210564397 U CN 210564397U CN 201920164874 U CN201920164874 U CN 201920164874U CN 210564397 U CN210564397 U CN 210564397U
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- centralizer
- groove
- tube
- falling device
- clamping groove
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Abstract
The utility model relates to an oil recovery tubular column is right anticreep device in pit. The technical scheme is as follows: the outer tube is connected in the outside cover of center tube, the outside of connecting the outer tube is equipped with the pipe of rightting, inboard middle part at the pipe of rightting is equipped with first anticreep ware and second anticreep ware, the middle part outside at the pipe of rightting is equipped with the centralizer, be equipped with the ball caulking groove on the centralizer, be equipped with the ball in the caulking groove, first anticreep ware includes the spring chamber, expanding spring, flexible card key, expanding spring sets up in the spring chamber, expanding spring one end and the inboard welding in spring chamber, expanding spring's the other end is equipped with flexible card key, through welded fastening. The utility model has the advantages that: the utility model discloses can prevent coming off of centralizer, eliminate the possibility that centralizer part scatters, avoid the emergence of the thing accident that falls in the pit to reduced manufacturing cost, the utility model discloses a can reduce the resistance, reduce wearing and tearing, prolong the life of centralizer, the utility model discloses can prevent that the tubular column from being blocked.
Description
Technical Field
The utility model relates to a tubular column righting device in the pit, in particular to oil recovery tubular column righting anticreep device in the pit.
Background
In the oil extraction process of an oil field, the phenomenon of eccentric wear of a downhole tubular column in oil extraction equipment can often occur in the working process, the existing solution is to install a centralizer on the downhole tubular column, but the existing centralizer structure still has some defects, the main defects are that the wear resistance is poor, the service life is short, the oil extraction cost is increased, the process of oil extraction production is further influenced, and the thread connection of the core tube and the upper and lower tubular columns of the existing device only adopts common threads, so that the accident that the centralizer is tripped to fall into the well often occurs. The centralizer is poor in structural design integrity, and parts of the centralizer fall after the centralizer falls into a well, so that fishing work after the centralizer falls into the well is complicated.
Disclosure of Invention
The utility model discloses an aim at is exactly the above-mentioned defect to prior art existence, provides an oil recovery tubular column in pit rights anticreep device, the utility model discloses can prevent coming off of centralizer, eliminate the possibility that centralizer part scatters, avoid the emergence of underground junk accident to reduce manufacturing cost, the utility model discloses a can the drag reduction, reduce wearing and tearing, prolong the life of centralizer, the utility model discloses can prevent that the tubular column from being blocked.
The technical scheme is as follows: comprises a central tube, a connecting outer tube, an upper connector, a lower connector, a centering tube, a first anti-falling device, a second anti-falling device and a centering device, wherein the upper connector is integrally arranged at the upper end of the central tube, the lower connector is integrally arranged at the lower end of the central tube, the connecting outer tube is sleeved outside the central tube, the centering tube is arranged outside the connecting outer tube, the connecting outer tube is connected with the upper part and the lower part of the centering tube through threads, a first clamping groove and a second clamping groove are formed in the middle part of the connecting outer tube, the first anti-falling device and the second anti-falling device are arranged in the middle part of the inner side of the centering tube, the first anti-falling device and the second anti-falling device are matched and connected with the first clamping groove and the second clamping groove, the centering device is arranged outside the middle part of the centering tube, a ball caulking groove is formed in the centering device, balls are arranged in the caulking groove, the first anti-falling device, one end of the telescopic spring is welded with the inner side of the spring cavity, the other end of the telescopic spring is provided with a telescopic clamping key, and the first anti-disengaging device and the second anti-disengaging device are structurally identical through welding fixation.
Preferably, flexible card key cross sectional shape is trapezoidal, and the length of going to the bottom of flexible card key is less than the upper base length of card key, and first draw-in groove and second draw-in groove are unanimous with flexible card key shape, and flexible card key card on the first anticreep ware is in first draw-in groove, and flexible card key card on the second anticreep ware is in the second draw-in groove.
Preferably, the two ends of the centralizer are integrally provided with connecting plates, the connecting groove is integrally formed in the joint of the centralizer and the centering pipe, and the connecting plates on the centralizer are clamped into the connecting groove and are fixedly connected with each other.
Preferably, a groove is formed in the inner side of the centralizer, a cavity is formed between the groove and the connecting groove, and a spring piece is arranged in the cavity.
Preferably, the outer wall of the centralizer is an arc surface.
The utility model has the advantages that: the utility model can prevent the falling of the centralizer, eliminate the possibility of falling of the centralizer parts, avoid the occurrence of accidents of falling objects in the well, thereby reducing the production cost, the utility model can reduce the resistance, reduce the abrasion and prolong the service life of the centralizer, and can prevent the pipe column from being blocked, the utility model can connect the outer connecting pipe with the upper part and the lower part of the centralizer through screw threads, the middle part of the outer connecting pipe and the centralizer is fixedly connected through the anti-falling device and the clamping groove, when the screw thread fails, the outer connecting pipe and the centralizer are fixedly connected in the first clamping groove through the telescopic clamping key on the anti-falling device on the first anti-falling device, the telescopic clamping key on the anti-falling device on the second anti-falling device is clamped in the first clamping groove to realize the fixed connection of the outer connecting pipe and the centralizer in the second clamping groove, the centralizer is a cambered surface, the resistance is reduced, the abrasion is reduced, the ball caulking groove is arranged on the centralizer, be equipped with the ball in the caulking groove, can reduce frictional force, prolong the life of centralizer, the utility model discloses be equipped with the recess in the inboard of centralizer, and vacuole formation between the spread groove, be equipped with the spring leaf in the cavity, can realize the flexible of centralizer, prevent that the tubular column from being blocked.
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of the anti-separation device;
FIG. 3 is a schematic structural view of the centralizer;
in the figure: center tube 1, connect outer tube 2, go up connector 3, connector 4, right tub 5, first anticreep ware 6, second anticreep ware 7, centralizer 8, first draw-in groove 9 and second draw-in groove 10, connecting plate 11, spread groove 12, cavity 13, spring leaf 14, spring chamber 6.1, expanding spring 6.2, flexible card key 6.3 down.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example 1:
the utility model comprises a central tube 1, a connecting outer tube 2, an upper connector 3, a lower connector 4, a centering tube 5, a first anti-falling device 6, a second anti-falling device 7 and a centralizer 8, wherein the upper connector 3 is integrally arranged at the upper end of the central tube 1, the lower connector 4 is integrally arranged at the lower end of the central tube 1, the connecting outer tube 2 is sleeved outside the central tube 1, the centering tube 5 is arranged outside the connecting outer tube 2, the connecting outer tube 2 is in threaded connection with the upper part and the lower part of the centering tube 5, a first clamping groove 9 and a second clamping groove 10 are arranged in the middle of the connecting outer tube 2, a first anti-falling device 6 and a second anti-falling device 7 are arranged in the middle of the inner side of the centering tube 5, the first anti-falling device 6 and the second anti-falling device 7 are in fit connection with the first clamping groove 9 and the second clamping groove 10, the centralizer 8 is arranged outside the middle of the centering tube 5, a ball caulking groove is arranged on the centralizer, first anticreep ware 6 includes spring chamber 6.1, expanding spring 6.2, flexible card key 6.3, expanding spring 6.2 sets up in spring chamber 6.1, expanding spring 6.2 one end and the inboard welding in spring chamber 6.1, expanding spring 6.2's the other end is equipped with flexible card key 6.3, through welded fastening, first anticreep ware 6 is unanimous with 7 structures of second anticreep ware, when the screw thread became invalid, through the flexible card key card on the first anticreep ware in first draw-in groove, the flexible card key card of the flexible card key card on the second anticreep ware in the second draw-in groove realizes the fixed connection of connecting outer tube and righting pipe in first draw-in groove.
Wherein, flexible card key 6.3 cross sectional shape is trapezoidal, flexible card key 6.3's the length of going to the bottom is less than the length of the upper base of card key 6.3, first draw-in groove 9 and second draw-in groove 10 are unanimous with flexible card key 6.3 shape, flexible card key 6.3 card on the first anticreep ware 6 is in first draw-in groove 9, flexible card key 6.3 card on the second anticreep ware 7 is in second draw-in groove 10, realize flexible card key card in first draw-in groove, realize the fixed connection of anticreep ware, realize dual fixed.
In addition, the two ends of the centralizer 8 are integrally provided with connecting plates 11, the connecting part of the centralizing pipe 5 and the centralizer 8 is integrally provided with a connecting groove, the connecting plates on the centralizer 8 are clamped in the connecting grooves 12 for fixed connection, and the centralizer is fixed in the connecting grooves by clamping the connecting plates on the centralizer, so that the centralizer is prevented from falling off.
In addition, the outer wall of the centralizer 8 is an arc surface, so that resistance is reduced, abrasion is reduced, and the service life of the centralizer is prolonged.
The utility model can prevent the falling of the centralizer, eliminate the possibility of falling of the centralizer parts, and avoid the occurrence of accidents of falling objects in the well, thereby reducing the production cost, the utility model can reduce the resistance, reduce the abrasion and prolong the service life of the centralizer, the utility model discloses the upper part and the lower part of the connecting outer pipe and the centralizer are connected by screw thread, the middle part of the connecting outer pipe and the centralizer is fixedly connected by the anti-falling device and the clamping groove, when the screw thread fails, the connecting outer pipe and the centralizer are clamped in the first clamping groove by the telescopic clamping key on the first anti-falling device, the telescopic clamping key on the anti-falling device is clamped in the second clamping groove to realize the fixed connection of the connecting outer pipe and the centralizer in the first clamping groove, and prevent the falling, the centralizer is a cambered surface, reduces the resistance and reduces the abrasion, the ball caulking groove is arranged on the centralizer, and balls are arranged in the caulking groove, the friction force can be reduced, and the service life of the centralizer is prolonged.
Example 2:
the utility model comprises a central tube 1, a connecting outer tube 2, an upper connector 3, a lower connector 4, a centering tube 5, a first anti-falling device 6, a second anti-falling device 7 and a centralizer 8, wherein the upper connector 3 is integrally arranged at the upper end of the central tube 1, the lower connector 4 is integrally arranged at the lower end of the central tube 1, the connecting outer tube 2 is sleeved outside the central tube 1, the centering tube 5 is arranged outside the connecting outer tube 2, the connecting outer tube 2 is in threaded connection with the upper part and the lower part of the centering tube 5, a first clamping groove 9 and a second clamping groove 10 are arranged in the middle of the connecting outer tube 2, a first anti-falling device 6 and a second anti-falling device 7 are arranged in the middle of the inner side of the centering tube 5, the first anti-falling device 6 and the second anti-falling device 7 are in fit connection with the first clamping groove 9 and the second clamping groove 10, the centralizer 8 is arranged outside the middle of the centering tube 5, a ball caulking groove is arranged on the centralizer, first anticreep ware 6 includes spring chamber 6.1, expanding spring 6.2, flexible card key 6.3, expanding spring 6.2 sets up in spring chamber 6.1, expanding spring 6.2 one end and the inboard welding in spring chamber 6.1, expanding spring 6.2's the other end is equipped with flexible card key 6.3, through welded fastening, first anticreep ware 6 is unanimous with 7 structures of second anticreep ware, when the screw thread became invalid, through the flexible card key card on the first anticreep ware in first draw-in groove, the flexible card key card of the flexible card key card on the second anticreep ware in the second draw-in groove realizes the fixed connection of connecting outer tube and righting pipe in first draw-in groove.
Wherein, flexible card key 6.3 cross sectional shape is trapezoidal, flexible card key 6.3's the length of going to the bottom is less than the length of the upper base of card key 6.3, first draw-in groove 9 and second draw-in groove 10 are unanimous with flexible card key 6.3 shape, flexible card key 6.3 card on the first anticreep ware 6 is in first draw-in groove 9, flexible card key 6.3 card on the second anticreep ware 7 is in second draw-in groove 10, realize flexible card key card in first draw-in groove, realize the fixed connection of anticreep ware, realize dual fixed.
In addition, the two ends of the centralizer 8 are integrally provided with connecting plates 11, the connecting part of the centralizing pipe 5 and the centralizer 8 is integrally provided with a connecting groove, the connecting plates on the centralizer 8 are clamped in the connecting grooves 12 for fixed connection, and the centralizer is fixed in the connecting grooves by clamping the connecting plates on the centralizer, so that the centralizer is prevented from falling off.
In addition, the inner side of the centralizer 8 is provided with a groove, a cavity 13 is formed between the groove and the connecting groove 12, and a spring piece 14 is arranged in the cavity 13, so that the centralizer can stretch and retract, a tubular column is prevented from being clamped, and the tubular column can be driven up and down smoothly.
In addition, the outer wall of the centralizer 8 is an arc surface, so that resistance is reduced, abrasion is reduced, and the service life of the centralizer is prolonged.
The utility model can prevent the falling of the centralizer, eliminate the possibility of falling of the centralizer parts, avoid the occurrence of accidents of falling objects in the well, thereby reducing the production cost, the utility model can reduce the resistance, reduce the abrasion and prolong the service life of the centralizer, and can prevent the pipe column from being blocked, the utility model can connect the outer connecting pipe with the upper part and the lower part of the centralizer through screw threads, the middle part of the outer connecting pipe and the centralizer is fixedly connected through the anti-falling device and the clamping groove, when the screw thread fails, the outer connecting pipe and the centralizer are fixedly connected in the first clamping groove through the telescopic clamping key on the anti-falling device on the first anti-falling device, the telescopic clamping key on the anti-falling device on the second anti-falling device is clamped in the first clamping groove to realize the fixed connection of the outer connecting pipe and the centralizer in the second clamping groove, the centralizer is a cambered surface, the resistance is reduced, the abrasion is reduced, the ball caulking groove is arranged on the centralizer, be equipped with the ball in the caulking groove, can reduce frictional force, prolong the life of centralizer, the utility model discloses be equipped with the recess in the inboard of centralizer, and vacuole formation between the spread groove, be equipped with the spring leaf in the cavity, can realize the flexible of centralizer, prevent that the tubular column from being blocked.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solutions described above. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the scope of the claimed invention as far as possible.
Claims (5)
1. The utility model provides an oil recovery tubular column anti-disengaging device that rights in pit, upper end an organic whole of center tube (1) is equipped with connector (3), and lower extreme an organic whole of center tube (1) is equipped with down connector (4), characterized by: comprises a central tube (1), a connecting outer tube (2), a centering tube (5), a first anti-falling device (6), a second anti-falling device (7) and a centralizer (8), wherein the connecting outer tube (2) is sleeved outside the central tube (1), the centering tube (5) is arranged outside the connecting outer tube (2), the connecting outer tube (2) is in threaded connection with the upper part and the lower part of the centering tube (5), a first clamping groove (9) and a second clamping groove (10) are formed in the middle part of the connecting outer tube (2), the first anti-falling device (6) and the second anti-falling device (7) are arranged in the middle part of the inner side of the centering tube (5), the first anti-falling device (6) and the second anti-falling device (7) are in matched connection with the first clamping groove (9) and the second clamping groove (10), the centralizer (8) is arranged outside the middle part of the centering tube (5), a ball caulking groove is formed in the centralizer (8), and balls are arranged in the caulking groove, first anticreep ware (6) are including spring chamber (6.1), expanding spring (6.2), flexible card key (6.3), and expanding spring (6.2) set up in spring chamber (6.1), and expanding spring (6.2) one end and the inboard welding in spring chamber (6.1), and the other end of expanding spring (6.2) is equipped with flexible card key (6.3), and through welded fastening, first anticreep ware (6) and second anticreep ware (7) structure are unanimous.
2. The production tubing string centralizing and anti-drop device of claim 1, which is characterized in that: the cross-sectional shape of the telescopic clamping key (6.3) is trapezoidal, the lower bottom length of the telescopic clamping key (6.3) is smaller than the upper bottom length of the clamping key (6.3), the shapes of the first clamping groove (9) and the second clamping groove (10) are consistent with that of the telescopic clamping key (6.3), the telescopic clamping key (6.3) on the first anti-falling device (6) is clamped in the first clamping groove (9), and the telescopic clamping key (6.3) on the second anti-falling device (7) is clamped in the second clamping groove (10).
3. The production tubing string centralizing and anti-drop device of claim 1, which is characterized in that: the two ends of the centralizer (8) are integrally provided with connecting plates (11), the joint of the centralizer (8) and the centralizer (5) is integrally provided with a connecting groove, and the connecting plates on the centralizer (8) are clamped into the connecting grooves (12) to be fixedly connected.
4. The production tubing string centralizing and anti-drop device of claim 3, wherein: the inner side of the centralizer (8) is provided with a groove, a cavity (13) is formed between the groove and the connecting groove (12), and a spring piece (14) is arranged in the cavity (13).
5. The production tubing string centralizing and anti-drop device of claim 1, which is characterized in that: the outer wall of the centralizer (8) is an arc surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920164874.9U CN210564397U (en) | 2019-01-30 | 2019-01-30 | Oil production downhole tubular column centralizing anti-drop device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920164874.9U CN210564397U (en) | 2019-01-30 | 2019-01-30 | Oil production downhole tubular column centralizing anti-drop device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210564397U true CN210564397U (en) | 2020-05-19 |
Family
ID=70632269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920164874.9U Expired - Fee Related CN210564397U (en) | 2019-01-30 | 2019-01-30 | Oil production downhole tubular column centralizing anti-drop device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210564397U (en) |
-
2019
- 2019-01-30 CN CN201920164874.9U patent/CN210564397U/en not_active Expired - Fee Related
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| 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: 20200519 Termination date: 20210130 |
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| CF01 | Termination of patent right due to non-payment of annual fee |