CN101994488A - Screw pump well sucker rod centralizer with bidirectional protection effect - Google Patents
Screw pump well sucker rod centralizer with bidirectional protection effect Download PDFInfo
- Publication number
- CN101994488A CN101994488A CN2009101046919A CN200910104691A CN101994488A CN 101994488 A CN101994488 A CN 101994488A CN 2009101046919 A CN2009101046919 A CN 2009101046919A CN 200910104691 A CN200910104691 A CN 200910104691A CN 101994488 A CN101994488 A CN 101994488A
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- sucker rod
- inner ring
- screw pump
- pump well
- centralizer body
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Abstract
The invention relates to a screw pump well sucker rod centralizer with bidirectional protection effect, which comprises a centralizing body and is characterized in that: the centralizing body is an open cylinder formed by coiling an elastic metal sheet and provided with an inner ring and an outer ring, a magnet is embedded into the outer ring, and the diameter of the inner ring is greater than that of a sucker rod; and a centralizing body inner ring bush is arranged in the inner ring of the centralizing body, a sucker rod bush is arranged on the sucker rod, and the inside diameter of the centralizing body inner ring bush is greater than the outside diameter of the sucker rod bush. The centralizer has the advantages that: because the magnet is embedded on the circumference of the centralizing body and the centralizing body does not produce relative rotation with an oil pipe, abrasion of an external circle of the centralizing body and abrasion of the wall of the oil pipe are avoided; wedge-shaped slips arranged in a wedge-shaped inner groove of a limiter are encircled and buckled together and then clamped on the sucker rod, so the centralizer does not move; therefore, the abrasion of the sucker rod is avoided, and the service lives of the sucker rod, the oil pipe and the sucker rod centralizer are prolonged.
Description
Technical field
The present invention relates to the downhole tool of oilfield exploitation, be specifically related to a kind of screw pump well pumping rod centering device with bidirectional protective effect.
Background technology
Use in the process of screw pump oil pumping in the oil field, because swing bump oil pipe when the rotation of screw pump is rotated sucker rod in oil pipe, oil pipe and sucker rod all are worn, the hole deviation that in the oil drilling process, the causes acceleration of more wearing and tearing in addition, cause the phenomenon that oil pipe is worn out, sucker rod rubs to happen occasionally, have a strong impact on the ordinary production of oil well.Take place for fear of this phenomenon, at the box cupling place of sucker rod or other position of sucker rod centralizer is installed usually.The screw pump well pumping rod centering device that uses at present all is to be fastened on the sucker rod with the cylinder that engineering plastics are made both at home and abroad, and the official post of engineering plastics anti-wear performance is extremely short with the life-span; The stop that is fastened on the sucker rod also is that engineering plastics are made, and is subjected to temperatures involved generation play in oil well, has influenced the effect of setting upright.Therefore, to existing screw pump well pumping rod centering device, need make outstanding essential improvement from many aspects.
Summary of the invention
The purpose of this invention is to provide a kind of screw pump well pumping rod centering device with bidirectional protective effect, it neither rotates in use; play not can be avoided rubbing with tube inner wall again, can avoid again rubbing with sucker rod; set upright effective, long service life.
A kind of screw pump well pumping rod centering device of the present invention with bidirectional protective effect; comprise centralizer body; it is characterized in that: centralizer body is to be rolled by the elastic metallic thin plate to form the opening cylinder with inner ring and outer ring, is embedded with magnet on the outer ring, and the diameter of inner ring is greater than the diameter of sucker rod.Centralizer body adopts the steel spring plate manufacturing, as the steel spring plate of 65Mn or other trade mark.
Described a kind of screw pump well pumping rod centering device with bidirectional protective effect is provided with the centralizer body inner ring bushing in the inner ring the inside of centralizer body, is provided with the sucker rod lining on sucker rod, and the internal diameter of centralizer body inner ring bushing is greater than the external diameter of sucker rod lining.
Described a kind of screw pump well pumping rod centering device with bidirectional protective effect; its described sucker rod lining is made up of the two halves engaging; each both sides of half is respectively equipped with projection or/and groove, and opposite side is provided with groove, projection of half and second half the corresponding engaging of groove.
Described a kind of screw pump well pumping rod centering device with bidirectional protective effect also comprises the stop that cooperates and be positioned at centralizer body one end or two ends with sucker rod.
Described a kind of screw pump well pumping rod centering device with bidirectional protective effect, its described stop are to be set up jointly with outer half hitch by interior half cover; In partly overlap both ends section be circular arc, the middle part section is approximate " C " shape and the left side is provided with wedge-shaped slot, is provided with first dovetail slip of band saw tooth in this wedge-shaped slot; The both sides, front and back at interior half cover middle part are provided with button hole; The outer section that partly overlaps both ends is circular arc, the middle part section is approximate reverse " C " shape and the right is provided with wedge-shaped slot, is provided with second dovetail slip of band saw tooth in this wedge-shaped slot; The both sides, front and back at half cover middle part are provided with and the interior corresponding snap close of button hole that partly overlaps the both sides, front and back at middle part outward; The both sides at half cover middle part wrap in the outside of the both sides at interior partly cover middle part outward, in the button hole of interior half cover of the snap close that partly puts outward insertion.
The present invention compares with prior art and has the following advantages: because the magnet that is embedded with of centralizer body circumference, with centralizer body and oil pipe tightly magnetic do not relatively rotate with oil pipe together, so, avoided the wearing and tearing of centralizer body cylindrical and the wearing and tearing of tubing wall; The centralizer body inner ring bushing has protected the centralizer body inwall not to be worn, and sucker rod lining and sucker rod do not produce relative rotation, thereby has avoided the wearing and tearing of sucker rod; The dovetail slip that stop wedge shape inside groove is equipped with surrounds to be buckled together and is stuck on the sucker rod, can not be subjected to downhole temperature and bump and play after the wedging; Prolonged the application life of oil pipe, sucker rod and oil pumping rod centering device.
Description of drawings
Fig. 1 is that the present invention is installed in the schematic diagram in the oil pipe.
Fig. 2 is the A-A profile of Fig. 1.
Fig. 3 is the B-B profile of Fig. 1.
Fig. 4 is the structural representation of interior half cover of stop.
Fig. 5 is the A-A sectional view of Fig. 4.
Fig. 6 is the structural representation of outer half cover of stop.
Fig. 7 is the A-A sectional view of Fig. 6.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.
Referring to Fig. 1, Fig. 2 and Fig. 3, a kind of screw pump well pumping rod centering device of the present invention with bidirectional protective effect, its centralizer body 1 adopts the 65Mn steel spring plate to roll and forms the opening cylinder with inner ring and outer ring, be embedded with magnet 2 on the outer ring, and the diameter of inner ring is greater than the diameter of sucker rod 7; Inner ring the inside at centralizer body is provided with centralizer body inner ring bushing 5, is provided with the sucker rod lining on sucker rod, and the internal diameter of centralizer body inner ring bushing is greater than the external diameter of sucker rod lining; The outer ring of centralizer body 1 contacts with the inwall of oil pipe 8;
Described sucker rod lining is made up of two halves 6-1 and 6-2 engaging, and each both sides partly is respectively equipped with projection or/and groove, and opposite side is provided with groove, projection of half and second half the corresponding engaging of groove;
Referring to Fig. 4, Fig. 5, Fig. 6 and Fig. 7, described a kind of screw pump well pumping rod centering device with bidirectional protective effect also comprises the stop that cooperates and be positioned at centralizer body one end or two ends with sucker rod 7.This stop by interior partly overlap 3-1 and partly overlap 3-2 outward fasten and to form; In partly overlap both ends section be circular arc, the middle part section is approximate " C " shape and the left side is provided with wedge-shaped slot, is provided with the first dovetail slip 4-1 of band saw tooth in this wedge-shaped slot; The both sides, front and back at interior half cover middle part are provided with button hole; The outer section that partly overlaps both ends is circular arc, the middle part section is approximate reverse " C " shape and the right is provided with wedge-shaped slot, is provided with the second dovetail slip 4-2 of band saw tooth in this wedge-shaped slot; The both sides, front and back at half cover middle part are provided with and the interior corresponding snap close of button hole that partly overlaps the both sides, front and back at middle part outward; The both sides at half cover middle part wrap in the outside of the both sides at interior partly cover middle part outward, in the button hole of interior half cover of the snap close that partly puts outward insertion.
This stop is made with the rubber-like metal material, as the steel spring plate of 65Mn or other trade mark.Owing to be provided with the dovetail slip of band saw tooth, be not subjected to the influence of greasy dirt, therefore, stop can not move to the extreme direction near centralizer body, makes spacing reliable.This stop is applicable to that the oil pumping rod centering device of all rod-pumped wells is spacing.
Claims (5)
1. screw pump well pumping rod centering device with bidirectional protective effect; comprise centralizer body (1); it is characterized in that: centralizer body (1) is to be rolled by the elastic metallic thin plate to form the opening cylinder with inner ring and outer ring; be embedded with magnet (2) on the outer ring, the diameter of inner ring is greater than the diameter of sucker rod (7).
2. a kind of screw pump well pumping rod centering device according to claim 1 with bidirectional protective effect; it is characterized in that: the inner ring the inside at centralizer body (1) is provided with centralizer body inner ring bushing (5); be provided with the sucker rod lining on sucker rod (7), the internal diameter of centralizer body inner ring bushing is greater than the external diameter of sucker rod lining.
3. a kind of screw pump well pumping rod centering device according to claim 1 and 2 with bidirectional protective effect; it is characterized in that: described sucker rod lining by two halves (6-1) and (6-2) engaging form; each both sides of half is respectively equipped with projection or/and groove; opposite side is provided with groove, projection of half and second half the corresponding engaging of groove.
4. a kind of screw pump well pumping rod centering device with bidirectional protective effect according to claim 1 is characterized in that: also comprise the stop that cooperates and be positioned at centralizer body one end or two ends with sucker rod (7).
5. a kind of screw pump well pumping rod centering device with bidirectional protective effect according to claim 4 is characterized in that: described stop is fastened by interior half cover (3-1) and outer half cover (3-2) to be formed; The section at interior half cover (3-1) both ends is circular arc, the middle part section is approximate " C " shape and the left side is provided with wedge-shaped slot, is provided with first dovetail slip (4-1) of band saw tooth in this wedge-shaped slot; The both sides, front and back at interior half cover middle part are provided with button hole; The section at outer half cover (3-2) both ends is circular arc, the middle part section is approximate reverse " C " shape and the right is provided with wedge-shaped slot, is provided with second dovetail slip (4-2) of band saw tooth in this wedge-shaped slot; The both sides, front and back at half cover middle part are provided with and the interior corresponding snap close of button hole that partly overlaps the both sides, front and back at middle part outward; The both sides at half cover middle part wrap in the outside of the both sides at interior partly cover middle part outward, in the button hole of interior half cover of the snap close that partly puts outward insertion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101046919A CN101994488A (en) | 2009-08-25 | 2009-08-25 | Screw pump well sucker rod centralizer with bidirectional protection effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101046919A CN101994488A (en) | 2009-08-25 | 2009-08-25 | Screw pump well sucker rod centralizer with bidirectional protection effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101994488A true CN101994488A (en) | 2011-03-30 |
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ID=43785170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101046919A Pending CN101994488A (en) | 2009-08-25 | 2009-08-25 | Screw pump well sucker rod centralizer with bidirectional protection effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101994488A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314562A (en) * | 2014-10-20 | 2015-01-28 | 中国石油天然气股份有限公司 | Electromagnetic centralizing device in well |
| CN104314562B (en) * | 2014-10-20 | 2017-01-04 | 中国石油天然气股份有限公司 | Electromagnetic centralizing device in well |
| CN112227981A (en) * | 2020-11-11 | 2021-01-15 | 徐海英 | Carbon fiber sucker rod centralizer |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2674070Y (en) * | 2004-01-08 | 2005-01-26 | 王坤 | Anti-erroneous wear oil sucking rod centering guide |
| CN2688868Y (en) * | 2003-10-30 | 2005-03-30 | 邢建辉 | Device for preventing strong magnetic positioned sucking rod from wear-off |
| US20060243435A1 (en) * | 2005-04-27 | 2006-11-02 | Halliburton Energy Services, Inc. | Pressure responsive centralizer |
| CN2871799Y (en) * | 2005-07-05 | 2007-02-21 | 郑文光 | Magnetic-stabilized carbon fibre unit against eccentric abrasion |
| CN2895706Y (en) * | 2006-03-07 | 2007-05-02 | 李凡 | Improvement of spacing type sucker rod dog centralizer |
| CN2898262Y (en) * | 2006-05-13 | 2007-05-09 | 中国石油大学(华东) | Sucker-rod stabilizer of supporting spiral pump |
| GB2439234A (en) * | 2003-06-18 | 2007-12-19 | Weatherford Lamb | Centraliser actuated using downhole sensor to relay signal from surface |
| CN200992960Y (en) * | 2006-12-28 | 2007-12-19 | 中国石化股份胜利油田分公司孤东采油厂 | Sucker rod strong magnetic centralizer |
-
2009
- 2009-08-25 CN CN2009101046919A patent/CN101994488A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2439234A (en) * | 2003-06-18 | 2007-12-19 | Weatherford Lamb | Centraliser actuated using downhole sensor to relay signal from surface |
| CN2688868Y (en) * | 2003-10-30 | 2005-03-30 | 邢建辉 | Device for preventing strong magnetic positioned sucking rod from wear-off |
| CN2674070Y (en) * | 2004-01-08 | 2005-01-26 | 王坤 | Anti-erroneous wear oil sucking rod centering guide |
| US20060243435A1 (en) * | 2005-04-27 | 2006-11-02 | Halliburton Energy Services, Inc. | Pressure responsive centralizer |
| CN2871799Y (en) * | 2005-07-05 | 2007-02-21 | 郑文光 | Magnetic-stabilized carbon fibre unit against eccentric abrasion |
| CN2895706Y (en) * | 2006-03-07 | 2007-05-02 | 李凡 | Improvement of spacing type sucker rod dog centralizer |
| CN2898262Y (en) * | 2006-05-13 | 2007-05-09 | 中国石油大学(华东) | Sucker-rod stabilizer of supporting spiral pump |
| CN200992960Y (en) * | 2006-12-28 | 2007-12-19 | 中国石化股份胜利油田分公司孤东采油厂 | Sucker rod strong magnetic centralizer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314562A (en) * | 2014-10-20 | 2015-01-28 | 中国石油天然气股份有限公司 | Electromagnetic centralizing device in well |
| CN104314562B (en) * | 2014-10-20 | 2017-01-04 | 中国石油天然气股份有限公司 | Electromagnetic centralizing device in well |
| CN112227981A (en) * | 2020-11-11 | 2021-01-15 | 徐海英 | Carbon fiber sucker rod centralizer |
| CN112227981B (en) * | 2020-11-11 | 2021-07-13 | 徐海英 | Carbon fiber sucker rod centralizer |
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| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20110330 |
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