CN2376529Y - Rotatable stabilizing wax scraper - Google Patents
Rotatable stabilizing wax scraper Download PDFInfo
- Publication number
- CN2376529Y CN2376529Y CN 99220905 CN99220905U CN2376529Y CN 2376529 Y CN2376529 Y CN 2376529Y CN 99220905 CN99220905 CN 99220905 CN 99220905 U CN99220905 U CN 99220905U CN 2376529 Y CN2376529 Y CN 2376529Y
- Authority
- CN
- China
- Prior art keywords
- centering
- wax
- paraffin
- center rod
- model
- 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 relates to a rotatable centering wax scraper, which belongs to a dual-function appliance for centering a sucker rod and scraping wax on an oil pipe. The utility model is composed of an upper joint, a central link rod, a back cap and a centering wax-scraping sleeve. The upper end of the central link rod is provided with an upper joint, the lower side of the upper joint is provided with the back cap, the middle section is provided with the centering wax-scraping sleeve, and the centering wax-scraping sleeve can freely rotate on the central link rod, the centering wax-scraping sleeve is provided with a spiral groove, and the spiral groove is made of a nylon material. The utility model is connected with a pump rod joint, oil flow flows upward through the groove of the centering wax-scraping sleeve to rotate and drives the groove of the centering wax-scraping sleeve to rotate at the time of oil pumping, and simultaneously, the utility model both carries out centering and scraping wax and has small friction to an oil pipe. The oil pipe is not damaged. The utility model has the advantages of simple structure, convenient assembly and disassembly and safe operation.
Description
The utility model relates to the sucker rod erection device, also relates to the paraffin scraper that cleans well, is a kind of rotatable centering paraffin scraper of the two unification.
Rod string in the pumpingh well adopts oil pumping rod centering device to solve the eccentric wear problem because a variety of causes and tube inner wall generation eccentric wear are quite serious sometimes usually.Because the tube inner wall wax deposition, make rod string up and down running resistance increase, and make area of passage reduce, influence crude output, adopt well-flushing or paraffin scraper to remove usually and amass wax.Centralizer, paraffin scraper with simple function, existing polytype, and many patented products are arranged.For example, " oil pumping rod centering device " (patent No. 90210227), " oil well paraffin scraper " (patent No. 92230577) etc.But seldom see yet set upright, only retrieve 3 pieces of patent documentations: " fusiformis low friction resistance centering paraffin scraper " (patent No. 90219649), " pumpingh well paraffin cutting centralizer " (patent No. 93202676), " a kind of special sucker rod of setting upright wax scraping apparatus that has " (patent No. 86207314) with the down-hole special implement of the two unification of paraffin cutting.Wherein " fusiformis is hanged down the frictional resistance centering paraffin scraper " is single part, can not axial limiting, and the axial motion scope is big on sucker rod, quick abrasion." pumpingh well paraffin cutting centralizer " complex structure rolls and forces to set upright, and contacts paraffin cutting firmly, and frictional resistance is bigger, easy break-down." a kind of special sucker rod of setting upright wax scraping apparatus that has " need carry out special processing to sucker rod, and paraffin cutting spare has been gone bad bad replacing.
In view of the above-mentioned shortcoming and defect part of prior art, the purpose of this utility model just is to provide a kind of distinguished rotatable centering paraffin scraper.Make it can set upright sucker rod, can strike off the long-pending wax on the tube inner wall again.And less with the frictional force of tube inner wall, can not damage oil pipe, further reduce the oil pumper load, simplify downhole tools more, reduce cost, reduce fault, help increasing production and improying productivity.
Above-mentioned purpose is realized by following technical proposals:
Rotatable centering paraffin scraper is by top connection, center rod, back of the body cap and set upright paraffin cutting cover and form.Joint is installed in the center rod upper end, and top connection bottom is a back of the body cap.The center rod stage casing is installed and to be set upright the paraffin cutting cover, set upright between paraffin cutting cover and the center rod for big gap movingly, setting upright the paraffin cutting cover can rotate freely on center rod.Set upright the paraffin cutting cover and be round tube shape, and spiral grooves is arranged, adopt the nylon material manufacturing.
Center rod epimere in the above-mentioned rotatable centering paraffin scraper has external screw thread, and hypomere has a boss, and there is external screw thread the bottom.
Top connection in the above-mentioned rotatable centering paraffin scraper is a round tube shape, and the first half and Lower Half all have internal thread, and the middle part cylindrical mills out the plane that matches with spanner.
According to the rotatable centering paraffin scraper that above technical scheme manufactures, be installed in rod string box cupling place.When the upper and lower operation of rod string is pumped, oil stream in the spiral grooves of setting upright the paraffin cutting cover on flow, drive and set upright paraffin cutting and be enclosed within on the center rod and rotate, when playing centralizing function, the wax of long-pending knot on the tube inner wall can be wiped off, and be taken to well head by oily stream and discharge.Not only have and set upright and two kinds of functions of paraffin cutting, and adopt the nylon material manufacturing owing to set upright the paraffin cutting cover, less to the tube inner wall friction factor, can not damage oil pipe.Also can rotate, also reduce frictional force, reduce the polished rod load of oil pumper tube inner wall owing to setting upright the paraffin cutting cover.Can change after setting upright the wearing and tearing of paraffin cutting cover, other steel part still can continue to use.Simple in structure, mounting or dismounting are convenient, and are safe and reliable.Be specially adapted to the oil well that eccentric wear is serious and paraffin content is higher.
Accompanying drawing is that overall structure of the present utility model is partly cutd open schematic diagram.
In conjunction with the accompanying drawings embodiment of the present utility model is described below:
In the accompanying drawing, the 1st, top connection, the 2nd, back of the body cap, the 3rd, center rod, the 4th, set upright the paraffin cutting cover.A is the spiral grooves of setting upright on the paraffin cutting cover 4.
That adopts that nylon material 1010 makes sets upright paraffin cutting cover 4, and its internal diameter is greater than the diameter of center rod 3, and suitably big gap is arranged, and its external diameter also has suitably big gap less than pipe aperture.The degree of depth of its spiral grooves A can be equal to or less than its wall thickness.The diameter of center rod 3 can with the sucker rod equal diameters.During assembling, will set upright paraffin cutting cover 4 earlier and install on the center rod 3.Refill back of the body cap 2, and make and set upright paraffin cutting cover 4 enough end play is arranged.Load onto top connection 1 at last, and tighten the spiral shell button.Be connected to rod string box cupling place then, be lowered in the oil well.Owing on mechanical model, can see a hinged-support herein as, be zero at hinged seat place deflection value, box cupling place deflection value is also very little, so can avoid rod string to tube inner wall generation eccentric wear.Simultaneously, because of oil stream upwards flows along spiral grooves A, can make and set upright 4 rotations of paraffin cutting cover, the wax that tube inner wall is scraped enters the A groove, and is taken out of well head by oily stream.
Claims (3)
1. rotatable centering paraffin scraper, it is characterized in that by top connection, center rod, back of the body cap and set upright paraffin cutting cover and form, joint is installed in the center rod upper end, top connection bottom is a back of the body cap, and the center rod stage casing is installed and to be set upright the paraffin cutting cover, set upright between paraffin cutting cover and the center rod for big gap movingly, setting upright the paraffin cutting cover can rotate freely on center rod, set upright the paraffin cutting cover and be round tube shape, and spiral grooves is arranged, adopt the nylon material manufacturing.
2. rotatable centering paraffin scraper according to claim 1 is characterized in that the center rod epimere has external screw thread, and hypomere has a boss, and there is external screw thread the bottom.
3. rotatable centering paraffin scraper according to claim 1 is characterized in that top connection is a round tube shape, and the first half and Lower Half all have internal thread, and the middle part cylindrical mills out the plane that matches with spanner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99220905 CN2376529Y (en) | 1999-05-14 | 1999-05-14 | Rotatable stabilizing wax scraper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99220905 CN2376529Y (en) | 1999-05-14 | 1999-05-14 | Rotatable stabilizing wax scraper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2376529Y true CN2376529Y (en) | 2000-05-03 |
Family
ID=34011569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99220905 Expired - Fee Related CN2376529Y (en) | 1999-05-14 | 1999-05-14 | Rotatable stabilizing wax scraper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2376529Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720442A (en) * | 2012-07-06 | 2012-10-10 | 常熟市石油固井工具有限公司 | Sucker rod centralizer |
| CN107143309A (en) * | 2017-06-23 | 2017-09-08 | 成都聚深科技有限责任公司 | A kind of hand-held pipeline opening cleaning device |
| CN110894780A (en) * | 2018-09-13 | 2020-03-20 | 中国石油化工股份有限公司 | Self-rotating scraping casing pipe processor for oil-water well workover |
-
1999
- 1999-05-14 CN CN 99220905 patent/CN2376529Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720442A (en) * | 2012-07-06 | 2012-10-10 | 常熟市石油固井工具有限公司 | Sucker rod centralizer |
| CN107143309A (en) * | 2017-06-23 | 2017-09-08 | 成都聚深科技有限责任公司 | A kind of hand-held pipeline opening cleaning device |
| CN107143309B (en) * | 2017-06-23 | 2019-06-04 | 成都聚深科技有限责任公司 | A kind of hand-held pipeline opening cleaning device |
| CN110894780A (en) * | 2018-09-13 | 2020-03-20 | 中国石油化工股份有限公司 | Self-rotating scraping casing pipe processor for oil-water well workover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |