CN218894641U - Perforating tool crawling rotary centralizer for perforation operation - Google Patents
Perforating tool crawling rotary centralizer for perforation operation Download PDFInfo
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- CN218894641U CN218894641U CN202222154850.XU CN202222154850U CN218894641U CN 218894641 U CN218894641 U CN 218894641U CN 202222154850 U CN202222154850 U CN 202222154850U CN 218894641 U CN218894641 U CN 218894641U
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- centralizing
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- sleeve
- crawling
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Abstract
The utility model discloses a perforating tool crawling rotary centralizer for perforation operation, and particularly relates to the technical field of perforation operation. The step parts at the two ends of the rolling sleeve and the lower edge of the centralizing rolling disc are inserted into the annular groove together, so that the centralizing rolling disc cannot fall off even if the centralizing rolling disc is subjected to a larger external force, the centralizing rolling disc can rotate around the axis of the horizontal well perforator and also can rotate around the axis vertical to the horizontal well perforator, the centralizing rolling disc plays a supporting role in the advancing process, the friction between the horizontal well perforator and the sleeve is reduced, the horizontal well perforator is positioned at an ideal central position in the sleeve, and the centralizing rolling disc cannot be clamped due to resistance in the advancing process because the centralizing rolling disc is spherical in shape.
Description
Technical Field
The utility model relates to the technical field of perforation operation, in particular to a perforating tool crawling rotary centralizer for perforation operation.
Background
In the oil and gas well exploitation operation at present, the horizontal well perforation technology is developed rapidly and matured day by day, has been commonly adopted by various large oil fields, and has higher requirements on underground conveying and centering of horizontal well perforators.
The following problems exist in the prior art:
under the prior art, the existing conveying and righting devices of each oil field are roughly divided into two types, namely an elastic sheet righting device and a roller righting device, and the two types of righting devices have advantages and disadvantages. The elastic sheet righting device is simple in structure and easy to process, but poor in righting effect, high in friction force on the inner wall of the sleeve and easy to damage, the roller righting device is high in processing difficulty, the roller is easy to fall off after being blocked, the fallen roller is easy to cause the perforator to be clamped, and well clamping accidents are caused.
Disclosure of Invention
The present utility model aims to solve one of the technical problems existing in the prior art or related technologies.
The technical scheme adopted by the utility model is as follows:
the utility model provides a perforating tool crawl rotary centralizer for perforation operation, includes top connection and lower clutch, be provided with the external screw thread in the top connection, the lower clutch surface is provided with the internal screw thread, external screw thread and internal screw thread assorted, all seted up annular groove on top connection one end and the lower clutch.
The surface of the lower joint is sleeved with a rolling sleeve, the surface of the rolling sleeve is fixedly connected with positioning shafts, and two positioning shafts are arranged.
The two positioning shafts are distributed along the direction of the outer diameter of the rolling sleeve, which is opposite to one hundred eighty degrees, a bearing is arranged on the surface of each positioning shaft, and a centralizing rolling disc is arranged on the surface of each bearing.
The righting rolling disc is in a spherical crown structure, and the spherical crown edge of the righting rolling disc is positioned in the annular groove.
Preferably, the fit between the rolling sleeve and the lower joint is a clearance fit.
Preferably, the fit between the bearing and the positioning shaft is a tight fit, and the fit between the bearing and the righting rolling disc is a tight fit.
Preferably, a group of mounting grooves are formed in the surface of the lower joint, and a sealing ring is arranged in the mounting groove and is positioned between the upper joint and the lower joint.
By adopting the technical scheme, the beneficial effects obtained by the utility model are as follows:
the step parts at the two ends of the rolling sleeve and the lower edge of the centralizing rolling disc are inserted into the annular groove together, so that the centralizing rolling disc cannot fall off even if subjected to a larger external force, the centralizing rolling disc can rotate around the axis of the horizontal well perforator and also can rotate around the axis vertical to the horizontal well perforator, the centralizing rolling disc plays a supporting role in the advancing process, friction between the horizontal well perforator and a sleeve is reduced, the horizontal well perforator is positioned at an ideal center position in the sleeve, and the centralizing rolling disc is in a spherical crown shape, and cannot be blocked due to resistance in the advancing process, so that the conveying of the horizontal well perforator can be accelerated.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
FIG. 2 is a schematic diagram of the structure of the righting rolling disc of the present utility model.
Fig. 3 is a schematic structural view of a rolling sleeve according to the present utility model.
In the figure: 1. an upper joint; 2. a lower joint; 3. centralizing the rolling disc; 4. a rolling sleeve; 5. a bearing; 6. and (3) sealing rings.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples: as shown in fig. 1-3, the utility model provides a perforating tool crawling rotary centralizer for perforation operation, which comprises an upper connector 1 and a lower connector 2, wherein external threads are arranged in the upper connector 1, internal threads are arranged on the surface of the lower connector 2, the external threads are matched with the internal threads, and annular grooves are formed in one end of the upper connector 1 and in the lower connector 2.
Further, the surface of the lower joint 2 is sleeved with a rolling sleeve 4, the surface of the rolling sleeve 4 is fixedly connected with positioning shafts, two positioning shafts are arranged and distributed along the direction of one hundred eighty degrees relative to the outer diameter of the rolling sleeve 4, a bearing 5 is arranged on the surface of the positioning shaft, a centralizing rolling disc 3 is arranged on the surface of the bearing 5, the centralizing rolling disc 3 is in a spherical crown structure, and the spherical crown edge of the centralizing rolling disc 3 is positioned in an annular groove.
Further, the fit between the rolling sleeve 4 and the lower joint 2 is clearance fit, the fit between the bearing 5 and the positioning shaft is tight fit, and the fit between the bearing 5 and the centralizing rolling disc 3 is tight fit.
Further, a group of mounting grooves are formed in the surface of the lower connector 2, a sealing ring 6 is arranged in each mounting groove, and the sealing ring 6 is located between the upper connector 1 and the lower connector 2.
Working principle: in actual operation, the two positioning shafts of the rolling sleeve 4 are provided with bearings 5, the surfaces of the bearings 5 are provided with a centralizing rolling disc 3, the rolling sleeve 4 and the bearings 5 are assembled together and then sleeved on the lower joint, then a sealing ring 6 is sleeved in a mounting groove of the lower joint 2, one end of the upper joint 1 far away from the lower joint 2 and one end of the lower joint 2 far away from the upper joint 1 are respectively connected with a horizontal well perforator, the upper joint 1 and the lower joint 2 are fixedly connected under the cooperation of external threads and internal threads, after the upper joint 1 and the lower joint 2 are screwed in place, the step parts at the two ends of the rolling sleeve 4 and the lower edge of the centralizing rolling disc 3 are inserted into an annular groove together, the structure is even under a huge external force, the centralizing rolling disc 3 cannot fall off either, the centralizing rolling disc 3 has a spherical crown-shaped appearance, the rolling sleeve 4 is in clearance fit with the lower joint 2 and can rotate relatively, the bearing 5 is in tight fit with the positioning shaft, the bearing 5 is in tight fit with the centralizing rolling disc 3, the centralizing rolling disc 3 can rotate around the axis of the horizontal well perforator and also can rotate around the axis perpendicular to the horizontal well perforator, the centralizing rolling disc 3 plays a supporting role in the advancing process, friction between the horizontal well perforator and a sleeve is reduced, the horizontal well perforator is positioned at an ideal central position in the sleeve, and the centralizing rolling disc 3 cannot be clamped due to resistance in the advancing process, so that the conveying of the horizontal well perforator can be accelerated.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (4)
1. The perforating tool crawling rotary centralizer for perforating operation comprises an upper connector (1) and a lower connector (2), and is characterized in that external threads are arranged in the upper connector (1), internal threads are arranged on the surface of the lower connector (2), the external threads are matched with the internal threads, and annular grooves are formed in one end of the upper connector (1) and the lower connector (2);
the surface of the lower joint (2) is sleeved with a rolling sleeve (4), the surface of the rolling sleeve (4) is fixedly connected with positioning shafts, and the two positioning shafts are arranged;
the two positioning shafts are distributed along the direction of the outer diameter of the rolling sleeve (4) relative to one hundred eighty degrees, a bearing (5) is arranged on the surface of each positioning shaft, and a centralizing rolling disc (3) is arranged on the surface of each bearing (5);
the righting rolling disc (3) is in a spherical crown structure, and the spherical crown edge of the righting rolling disc (3) is positioned in the annular groove.
2. A perforating gun crawling rotary centralizer for perforating operations according to claim 1, characterized in that the fit between the rolling sleeve (4) and the lower joint (2) is a clearance fit.
3. A perforating gun crawling rotary centralizer for perforating operations according to claim 1, characterized in that the fit between the bearing (5) and the positioning shaft is a tight fit, and the fit between the bearing (5) and the centralizing rolling disc (3) is a tight fit.
4. The perforating gun crawling rotary centralizer for perforating operation according to claim 1, wherein a group of mounting grooves are formed in the surface of the lower connector (2), sealing rings (6) are arranged in the mounting grooves, and the sealing rings (6) are located between the upper connector (1) and the lower connector (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222154850.XU CN218894641U (en) | 2022-08-16 | 2022-08-16 | Perforating tool crawling rotary centralizer for perforation operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222154850.XU CN218894641U (en) | 2022-08-16 | 2022-08-16 | Perforating tool crawling rotary centralizer for perforation operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218894641U true CN218894641U (en) | 2023-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222154850.XU Active CN218894641U (en) | 2022-08-16 | 2022-08-16 | Perforating tool crawling rotary centralizer for perforation operation |
Country Status (1)
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| CN (1) | CN218894641U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117418801A (en) * | 2023-12-18 | 2024-01-19 | 吉林市双林射孔器材有限责任公司 | Perforation tool string conveying device with sliding function |
-
2022
- 2022-08-16 CN CN202222154850.XU patent/CN218894641U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117418801A (en) * | 2023-12-18 | 2024-01-19 | 吉林市双林射孔器材有限责任公司 | Perforation tool string conveying device with sliding function |
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