CN100549361C - Centering paraffin scraper for sucker rod - Google Patents
Centering paraffin scraper for sucker rod Download PDFInfo
- Publication number
- CN100549361C CN100549361C CNB200710092513XA CN200710092513A CN100549361C CN 100549361 C CN100549361 C CN 100549361C CN B200710092513X A CNB200710092513X A CN B200710092513XA CN 200710092513 A CN200710092513 A CN 200710092513A CN 100549361 C CN100549361 C CN 100549361C
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- China
- Prior art keywords
- paraffin scraper
- sucker rod
- cutting ferrule
- upright
- limit cutting
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Abstract
The present invention relates to centering paraffin scraper for sucker rod, comprise be engaged in set upright paraffin scraper on the sucker rod, the location is engaged on the sucker rod and be positioned at the upper limit cutting ferrule of setting upright paraffin scraper upper end and the location is engaged on the sucker rod and is positioned at and sets upright paraffin scraper lower end lower limit cutting ferrule, it is characterized in that: setting upright paraffin scraper is the double tubular overall structure of the curling opening of thin plate, and has elasticity; One end of its urceolus is downward-sloping, and the other end is inclined upwardly, and the highest point at outer barrel two ends is provided with chamfering; The two ends of its inner core are parallel, the arc surface symmetry of both sides, front and back, and the left and right sides is provided with opening.Owing to set upright paraffin scraper is the double tubular overall structure of the curling opening of thin plate, so cross-sectional area is little, area of passage is big, has reduced oil-pumping resistance; Simultaneously can also scrape off the wax that condenses on oil pipe or the sucker rod, avoid the oil duct obstruction; Not easy to wear in the use, and easy installation and removal.
Description
Technical field
The present invention relates to the oil exploitation instrument, be specifically related to a kind of centering paraffin scraper for sucker rod.
Background technology
At present, the use insert pump that oil well oil-pumping has, all there is the problem of sucker rod and oil pipe tilting section or bending section eccentric wear in the use screw pump that has, causes sucker rod to rub or phenomenon that oil pipe is worn out happens occasionally, and influences the ordinary production of oil well.Take place for fear of this phenomenon, the position of wearing and tearing is installed by centralizer easily at sucker rod usually, be called " double-rotary sucker rod centering guide " as the disclosed name of CN1932232A.This oil pumping rod centering device with steel frame with set upright part and be injected into one, increased the intensity of setting upright part, solved the radially stable problem of centralizer when setting upright sucker rod.And the centralizer that has adopts engineering plastics to make the cylindrical shape supporting positive cover, and is provided with the oil groove of inclination on the excircle of supporting positive cover, and this class oil pumping rod centering device and oil pipe are interior to be contacted for line, material hardness is lower in addition, not only anti-wear performance is poor, and application life is short, but also has increased the resistance of oil pumping.In addition, in oil pumping process, the wax that also needs to reach sucker rod on the tubing wall in time scrapes off, and avoids oil duct to stop up, and normally carries out to guarantee to produce.And existing centralizer does not have the function of paraffin cutting, only set upright the function of sucker rod, and area of passage is little, has increased the load of oil pumper, has reduced pump efficiency.Each stroking distance is from installing the plastics centralizer on sucker rod, but because plastics centralizer cross-sectional area is big, and area of passage is little, and outside dimension is less and be easy to be worn, so, sucker rod load is increased, and paraffin cutting effect extreme difference.Another kind of automatic wax remover for pumped oil well because structure is comparatively complicated, reliability is relatively poor, also fails to be widely used.So, still cooperate with hot water or deep fat well-flushing both at home and abroad at present based on paraffin removing with chemical method.The hot water well-flushing, polluted reservoir not only, and needed just can return to normal production in 3 to 5 days.
Summary of the invention
The purpose of this invention is to provide a kind of centering paraffin scraper for sucker rod, it can set upright sucker rod, can scrape off the wax that condenses on oil pipe or the sucker rod again, and is simple in structure, little, easy for installation to the resistance of oil pumping, long service life.
Centering paraffin scraper for sucker rod of the present invention, comprise be engaged on the sucker rod set upright paraffin scraper, the location is engaged on the sucker rod and be positioned at the upper limit cutting ferrule of setting upright paraffin scraper upper end and the location is engaged on the sucker rod and is positioned at the lower limit cutting ferrule of setting upright the paraffin scraper lower end, it is characterized in that: setting upright paraffin scraper is the double tubular overall structure of the curling opening of thin plate, and has elasticity; One end of its urceolus is downward-sloping, and the other end is inclined upwardly, and the highest point at outer tube wall two ends is provided with chamfering; The two ends of its inner core are parallel, the arc surface symmetry of both sides, front and back, and the left and right sides is provided with opening.Highest point is provided with chamfering at the outer tube wall two ends, so that guiding is set upright paraffin scraper smoothly by the joint area of oil pipe, avoids setting upright paraffin scraper and breaks.
Described centering paraffin scraper for sucker rod, its upper limit cutting ferrule and lower limit cutting ferrule connect to form by two halves, and half a side of upper limit cutting ferrule/lower limit cutting ferrule is hinged with second half a side, the opposite side of half is connected by cottor pin with second half opposite side.
Described centering paraffin scraper for sucker rod, its upper end of setting upright both sides, paraffin scraper inner core front and back arc surface is provided with sawtooth, the lower end is provided with down sawtooth; The lower end of upper limit cutting ferrule is provided with stirs tooth, corresponding with the last sawtooth dislocation of the upper end of setting upright both sides, paraffin scraper inner core front and back arc surface; The upper end of lower limit cutting ferrule is provided with down stirs tooth, corresponding with the following sawtooth dislocation of the lower end of setting upright both sides, paraffin scraper internal layer front and back arc surface.
Described centering paraffin scraper for sucker rod comprises also and sets upright the wearing piece that the both sides arc surface cooperates before and after the paraffin scraper inner core that wearing piece is made up of two bearing shells.
Described centering paraffin scraper for sucker rod is a rubber cutting ferrule with setting upright the wearing piece that the both sides arc surface cooperates before and after the paraffin scraper inner core.
The present invention compared with prior art has the following advantages: owing to set upright the double tubular overall structure that paraffin scraper is the curling opening of thin plate, so cross-sectional area is little, area of passage is big, has reduced oil-pumping resistance, has improved the efficient of oil well pump; Set upright paraffin scraper when setting upright sucker rod, can also scrape off the wax that condenses on oil pipe or the sucker rod, avoided the oil duct obstruction; Not easy to wear in the use, and easy installation and removal.
Description of drawings
Fig. 1 is the first form structure schematic diagram of setting upright paraffin scraper of the present invention.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the A-A sectional view of Fig. 2.
Fig. 4 is the structural representation of the upper limit cover/lower limit cover of first form of the present invention.
Fig. 5 is the A-A sectional view of Fig. 4.
Fig. 6 is the first operational version schematic diagram of the present invention.
Fig. 7 is the A-A sectional view of Fig. 6.
Fig. 8 is the second operational version schematic diagram of the present invention.
Fig. 9 is the A-A sectional view of Fig. 8.
Figure 10 is the second form structure schematic diagram of setting upright paraffin scraper of the present invention.
Figure 11 is the vertical view of Figure 10.
Figure 12 is the A-A sectional view of Figure 11.
Figure 13 is the structural representation of the upper limit cover of second form.
Figure 14 is the structural representation of the lower limit cover of second form.
Figure 15 is the 3rd an operational version schematic diagram of the present invention.
Figure 16 is the A-A sectional view of Figure 15.
Figure 17 is the structural representation of bearing shell.
Figure 18 is the vertical view of Figure 17.
Figure 19 is the 4th an operational version schematic diagram of the present invention.
Figure 20 is the A-A sectional view of Figure 19.
Figure 21 is the structural representation of rubber cutting ferrule.
Figure 22 is the vertical view of Figure 21.
The specific embodiment
Embodiment one: referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the centering paraffin scraper for sucker rod of the present invention's first operational version, comprise first form on the sucker rod 7 of being engaged in set upright paraffin scraper 1, the location is engaged on the sucker rod and be positioned at the upper limit cutting ferrule 2 of first form of setting upright the paraffin scraper upper end of first form and the location of first form is engaged on the sucker rod and is positioned at the lower limit cutting ferrule 3 of first form of setting upright the paraffin scraper lower end of first form; The paraffin scraper of setting upright of first form is the thin plate double tubular overall structure of opening of curling, and has elasticity; One end of its urceolus is downward-sloping, and the other end is inclined upwardly, and the highest point at outer tube wall two ends is provided with chamfering 1-1; The two ends of its inner core are parallel, the arc surface symmetry of both sides, front and back, and the left and right sides is provided with opening; The upper limit cutting ferrule 2 of first form and the lower limit cutting ferrule of first form 3 connect to form by two halves, and half a side of the lower limit cutting ferrule of the upper limit cutting ferrule of first form/first form is hinged with second half a side, the opposite side of half is connected by cottor pin 4 with second half opposite side.Each stroking distance that begins the sucker rod more than the wax deposition at oil well is from installing a cover centering paraffin scraper for sucker rod, and the urceolus diameter that sucker rod is set upright paraffin scraper is equal to or slightly less than the internal diameter of oil pipe 8, so that to the oil pipe wax removal.Without dosing or hot water well-flushing, avoided pollution also, retrieved because three to five days the crude oil loss that causes during with the hot water well-flushing oil reservoir, when having saved workover treatment, during usefulness steam washing oil pipe used heat energy and time decreased to the pollution of environment.Simultaneously sucker rod also had good centralizing function.
Embodiment two: referring to Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13 and Figure 14, the centering paraffin scraper for sucker rod of the present invention's second operational version, comprise second form on the sucker rod 7 of being engaged in set upright paraffin scraper 1, the location is engaged on the sucker rod and be positioned at the upper limit cutting ferrule 2 of second form of setting upright the paraffin scraper upper end of second form and the location is engaged on the sucker rod and is positioned at the lower limit cutting ferrule 3 of second form of setting upright the paraffin scraper lower end of second form; The paraffin scraper of setting upright of second form is the thin plate double tubular overall structure of opening of curling, and has elasticity; One end of its urceolus is downward-sloping, and the other end is inclined upwardly, and the highest point at outer tube wall two ends is provided with chamfering 1-1; The two ends of its inner core are parallel, the arc surface symmetry of both sides, front and back, and the left and right sides is provided with opening, and the upper end of setting upright both sides, paraffin scraper inner core front and back arc surface of second form is provided with sawtooth 1-2, the lower end is provided with down sawtooth 1-3; The upper limit cutting ferrule 2 of second form and the lower limit cutting ferrule of second form 3 connect to form by two halves, and half a side of the lower limit cutting ferrule of the upper limit cutting ferrule of second form/second form is hinged with second half a side, the opposite side of half is connected by cottor pin 4 with second half opposite side; The lower end of the upper limit cutting ferrule of second form is provided with stirs tooth 2-1, corresponding with the last sawtooth 1-2 dislocation of the upper end of setting upright both sides, paraffin scraper inner core front and back arc surface; The upper end of the lower limit cutting ferrule 3 of second form is provided with down stirs tooth 3-1, corresponding with the following sawtooth 1-3 dislocation of the lower end of setting upright both sides arc surface before and after the paraffin scraper internal layer of second form.The upper and lower spacing upper and lower tooth of stirring that dislocation is set that puts that paraffin scraper inner core upper and lower end is provided with the upper and lower sawtooth and second form of setting upright in second form.Setting upright paraffin scraper when sucker rod moves up and down can be made and set upright the uniform wear of paraffin scraper urceolus by broken rotation, sets upright paraffin scraper application life thereby prolonged.Because it is little to set upright the cross-sectional area of paraffin scraper, area of passage is big, has farthest reduced the elastic deformation of the load and the sucker rod of oil pumper, has improved the pump efficiency of oil well pump, has reduced the consumption of electric energy.
Embodiment three: referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Figure 15, Figure 16, Figure 17 and Figure 18, the centering paraffin scraper for sucker rod of the present invention's the 3rd operational version, what comprise first form on the sucker rod 7 of being engaged in sets upright paraffin scraper 1, be installed in two bearing shells 5 between paraffin scraper inner core and the sucker rod set upright of first form, the location is engaged on the sucker rod and is positioned at the upper limit cutting ferrule 2 of first form of setting upright paraffin scraper upper end of first form and the location of first form is engaged on the sucker rod and is positioned at the lower limit cutting ferrule 3 of first form of setting upright the paraffin scraper lower end of first form; The paraffin scraper of setting upright of first form is the thin plate double tubular overall structure of opening of curling, and has elasticity; One end of its urceolus is downward-sloping, and the other end is inclined upwardly, and the highest point at outer tube wall two ends is provided with chamfering 1-1; The two ends of its inner core are parallel, the arc surface symmetry of both sides, front and back, and the left and right sides is provided with opening; The upper limit cutting ferrule 2 of first form and the lower limit cutting ferrule of first form 3 connect to form by two halves, and half a side of the lower limit cutting ferrule of the upper limit cutting ferrule of first form/first form is hinged with second half a side, the opposite side of half is connected by cottor pin 4 with second half opposite side.The paraffin scraper inner core of setting upright in the sucker rod and first form increases by two bearing shell sheets made from high-abrasive material as consumable accessory, when the inspection pump, change, make setting upright paraffin scraper and reusing of first form, can prevent that sucker rod is worn, also prolong the application life of setting upright paraffin scraper of first form greatly simultaneously.As in the oil well paraffinication section, each stroking distance is from adorning a cover oil pumping centering paraffin scraper, and not only can set upright sucker rod can also be to pumping rod wax scraping.
Embodiment four: Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Figure 19, Figure 20, Figure 21 and Figure 22, the centering paraffin scraper for sucker rod of the present invention's first operational version comprises that rubber cutting ferrule 6, the location between paraffin scraper inner core and the sucker rod set upright of setting upright paraffin scraper 1, being installed in first form of first form on the sucker rod 7 of being engaged in is engaged on the sucker rod and is positioned at the upper limit cutting ferrule 2 of first form of setting upright the paraffin scraper upper end of first form and the location of first form is engaged on the sucker rod and is positioned at the lower limit cutting ferrule 3 of first form of setting upright the paraffin scraper lower end of first form; The paraffin scraper of setting upright of first form is the thin plate double tubular overall structure of opening of curling, and has elasticity; One end of its urceolus is downward-sloping, and the other end is inclined upwardly, and the highest point at outer tube wall two ends is provided with chamfering 1-1; The two ends of its inner core are parallel, the arc surface symmetry of both sides, front and back, and the left and right sides is provided with opening; The upper limit cutting ferrule 2 of first form and the lower limit cutting ferrule of first form 3 connect to form by two halves, and half a side of the lower limit cutting ferrule of the upper limit cutting ferrule of first form/first form is hinged with second half a side, the opposite side of half is connected by cottor pin 4 with second half opposite side.In the oil well of screw pump oil production, use first kind, same owing to set upright the urceolus external diameter of paraffin scraper greater than oil pipe 8 internal diameters, set upright paraffin scraper and be parked in the oil pipe motionlessly under the effect of elasticity tension, sucker rod rotates between two parties, and sucker rod has been played good centralizing function.At sucker rod with set upright between the paraffin scraper inner core and to increase soft wearing piece such as rubber cutting ferrule, change when the inspection pump as consumable accessory, make that to set upright paraffin scraper reusable, can prolong the application life of setting upright paraffin scraper equally, reduced cost of winning.
Claims (5)
1, centering paraffin scraper for sucker rod, comprise be engaged on the sucker rod set upright paraffin scraper (1), the location is engaged on the sucker rod and be positioned at the upper limit cutting ferrule (2) of setting upright paraffin scraper upper end and locate and be engaged on the sucker rod and be positioned at the lower limit cutting ferrule (3) of setting upright the paraffin scraper lower end, it is characterized in that: set upright the double tubular overall structure of paraffin scraper (1), and have elasticity for the curling opening of thin plate; One end of its urceolus is downward-sloping, and the other end is inclined upwardly, and the highest point at outer tube wall two ends is provided with chamfering (1-1); The two ends of its inner core are parallel, the arc surface symmetry of both sides, front and back, and the left and right sides is provided with opening.
2, centering paraffin scraper for sucker rod according to claim 1, it is characterized in that: upper limit cutting ferrule (2) and lower limit cutting ferrule (3) connect to form by two halves, and half a side of upper limit cutting ferrule and lower limit cutting ferrule is hinged with second half a side, the opposite side of half is connected by cottor pin (4) with second half opposite side.
3, centering paraffin scraper for sucker rod according to claim 1 and 2 is characterized in that: the upper end of setting upright both sides, paraffin scraper (1) inner core front and back arc surface is provided with sawtooth (1-2), the lower end is provided with down sawtooth (1-3); The lower end of upper limit cutting ferrule (2) is provided with stirs tooth (2-1), corresponding with last sawtooth (1-2) dislocation of the upper end of setting upright both sides, paraffin scraper inner core front and back arc surface; The upper end of lower limit cutting ferrule (3) is provided with down stirs tooth (3-1), corresponding with following sawtooth (1-3) dislocation of the lower end of setting upright both sides, paraffin scraper inner core front and back arc surface.
4, centering paraffin scraper for sucker rod according to claim 1 and 2 is characterized in that: comprise also and set upright the wearing piece that the both sides arc surface cooperates before and after paraffin scraper (1) inner core that wearing piece is made up of two bearing shells (5).
5, centering paraffin scraper for sucker rod according to claim 1 and 2 is characterized in that: with setting upright the wearing piece that the both sides arc surface cooperates before and after paraffin scraper (1) inner core is a rubber cutting ferrule (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710092513XA CN100549361C (en) | 2007-08-02 | 2007-08-02 | Centering paraffin scraper for sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710092513XA CN100549361C (en) | 2007-08-02 | 2007-08-02 | Centering paraffin scraper for sucker rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101100933A CN101100933A (en) | 2008-01-09 |
| CN100549361C true CN100549361C (en) | 2009-10-14 |
Family
ID=39035365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710092513XA Expired - Fee Related CN100549361C (en) | 2007-08-02 | 2007-08-02 | Centering paraffin scraper for sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100549361C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101701514B (en) * | 2009-07-23 | 2013-01-16 | 西安宇星石油机械新技术开发有限公司 | Wax scraper for inner wall of oil pipe |
| CN110863799A (en) * | 2019-12-11 | 2020-03-06 | 贵州航天凯山石油仪器有限公司 | Electric descaling method and device for oil field water injection well |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3516494A (en) * | 1968-09-23 | 1970-06-23 | Warren F Ward | Migratory scraper and valve |
-
2007
- 2007-08-02 CN CNB200710092513XA patent/CN100549361C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3516494A (en) * | 1968-09-23 | 1970-06-23 | Warren F Ward | Migratory scraper and valve |
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| Publication number | Publication date |
|---|---|
| CN101100933A (en) | 2008-01-09 |
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Granted publication date: 20091014 Termination date: 20130802 |