CN2667142Y - Rotary sucker rod centralising device - Google Patents
Rotary sucker rod centralising device Download PDFInfo
- Publication number
- CN2667142Y CN2667142Y CN 200320111507 CN200320111507U CN2667142Y CN 2667142 Y CN2667142 Y CN 2667142Y CN 200320111507 CN200320111507 CN 200320111507 CN 200320111507 U CN200320111507 U CN 200320111507U CN 2667142 Y CN2667142 Y CN 2667142Y
- Authority
- CN
- China
- Prior art keywords
- sucker rod
- centralizing
- limitation ring
- limit ring
- centralizer body
- 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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Abstract
The utility model provides a rotary sucker rod centralizing device and relates to a sucker rod centralizing device for oilfield downhole operation, which comprises an upper limitation ring(1), a centralizing body(2) and a lower limitation ring(3). The upper limitation ring(1) and the lower limitation ring(3) are respectively fixed on a sucker rod(4). The centralizing body(2) is positioned on the sucker rod(4) between the upper limitation ring(1) and the lower limitation ring(3). The centralizing body(2) is a hollow solid with a spiral type, up and down communicated slot(6). The hollow diameter of the centralizing body(2) is greater than that of the sucker rod(4), and the width of each spiral type slot(6) is same; wherein, the bottom of one of the spiral type slots(6) is provided with a slot(5) through the solid part. Two ends of upper and lower of the centralizing body(2) are provided with a conical structure. The utility model can be rotated, and up and down reciprocated moved along with the sucker rod. The resistance of the oil production can be reduced and the flow speed of the can be enhanced by the spiral type slot(6) arranged on the centralizing body(2). The utility model can effectively prevent the friction between the sucker rod and the oil pipe, reduce the occurrence of the accident of the facture of the downhole rod pipe and extend the operation cycle.
Description
Technical field: the utility model relates to oilfield downhole operation sucker rod erection device, is specifically related to the rotary type oil pumping rod centering device.
Background technology: existing oil pumping rod centering device can not pump together along with sucker rod, make that to produce the wearing and tearing of eccentric wear, centralizer body between sucker rod and the oil pipe inhomogeneous, and set upright tooth oil recovery process is produced resistance, the flow velocity of oil is reduced, these all have been directed at down-hole rod tube fracture accident and have frequently taken place, and have shortened duty cycle.
The utility model content: the purpose of this utility model is the weak point that overcomes existing oil pumping rod centering device, and a kind of rotary type oil pumping rod centering device is provided.It comprises upper limit ring 1, centralizer body 2, lower limit ring 3, upper limit ring 1 and lower limit ring 3 are separately fixed on the sucker rod 4, centralizer body 2 is positioned on the sucker rod 4 of upper limit ring 1 and lower limit ring 3 centres, centralizer body 2 is the hollow entities that have the spiral slot 6 that is communicated with up and down, the hollow diameter of centralizer body 2 is bigger than the diameter of sucker rod 4, the width of each spiral slot 6 is identical, the bottom of a spiral slot 6 therein has the groove 5 that runs through entity part, and the two ends up and down of centralizer body 2 are cone structure.The utility model can rotate and pumps with sucker rod, and the spiral slot 6 on the centralizer body 2 can reduce the resistance when recovering the oil, and improves the flow velocity of oil.The utility model can effectively prevent the friction between sucker rod and the oil pipe, reduces the generation of down-hole rod tube fracture accident, prolongs duty cycle.
Description of drawings: Fig. 1 is an overall structure schematic diagram of the present utility model, and Fig. 2 is the A-A sectional view of Fig. 1.
The specific embodiment: specify present embodiment below in conjunction with accompanying drawing.It is made up of upper limit ring 1, centralizer body 2, lower limit ring 3, upper limit ring 1 and lower limit ring 3 are separately fixed on the sucker rod 4, centralizer body 2 is positioned on the sucker rod 4 of upper limit ring 1 and lower limit ring 3 centres, centralizer body 2 is the hollow entities that have the spiral slot 6 that is communicated with up and down, the hollow diameter of centralizer body 2 is bigger than the diameter of sucker rod 4, the width of each spiral slot 6 is identical, the bottom of a spiral slot 6 therein has the groove 5 that runs through entity part, the two ends up and down of centralizer body 2 are cone structure, and centralizer body 2 outer shape are cylinder.
Claims (1)
1, the rotary type oil pumping rod centering device, it is characterized in that it comprises upper limit ring (1), centralizer body (2), lower limit ring (3), upper limit ring (1) and lower limit ring (3) are separately fixed on the sucker rod (4), centralizer body (2) is positioned on the sucker rod (4) of upper limit ring (1) and lower limit ring (3) centre, centralizer body (2) is the hollow entity that has the spiral slot (6) that is communicated with up and down, the hollow diameter of centralizer body (2) is bigger than the diameter of sucker rod (4), the width of each spiral slot (6) is identical, the bottom of a spiral slot (6) therein has the groove (5) that runs through entity part, and the two ends up and down of centralizer body (2) are cone structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320111507 CN2667142Y (en) | 2003-10-30 | 2003-10-30 | Rotary sucker rod centralising device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320111507 CN2667142Y (en) | 2003-10-30 | 2003-10-30 | Rotary sucker rod centralising device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2667142Y true CN2667142Y (en) | 2004-12-29 |
Family
ID=34344294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320111507 Expired - Fee Related CN2667142Y (en) | 2003-10-30 | 2003-10-30 | Rotary sucker rod centralising device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2667142Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200003A (en) * | 2011-05-20 | 2011-09-28 | 王庆喜 | Pumping rod oil-increasing rotary wax scraping centralizer |
-
2003
- 2003-10-30 CN CN 200320111507 patent/CN2667142Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200003A (en) * | 2011-05-20 | 2011-09-28 | 王庆喜 | Pumping rod oil-increasing rotary wax scraping centralizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041229 Termination date: 20101030 |