CN201236639Y - Helical fixed pumping rod bias-wearing preventer - Google Patents
Helical fixed pumping rod bias-wearing preventer Download PDFInfo
- Publication number
- CN201236639Y CN201236639Y CNU2008200334888U CN200820033488U CN201236639Y CN 201236639 Y CN201236639 Y CN 201236639Y CN U2008200334888 U CNU2008200334888 U CN U2008200334888U CN 200820033488 U CN200820033488 U CN 200820033488U CN 201236639 Y CN201236639 Y CN 201236639Y
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- sucker rod
- rod
- rod pipe
- oil
- lug bosses
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Abstract
The utility model relates to a spiral fixed type anti-eccentric wear device for a sucker rod. The device is connected with the sucker rod; a plurality of spiral lug bosses are formed on the side of the circumference of the device, and a flow passing chute is arranged between two adjacent lug bosses; two end surfaces of the device are arranged as conical surfaces; and the spiral lug bosses are straight reinforcement lug bosses. The utility model has the advantages of addressing the difficulty that centralizing a rod pipe, preventing the rod pipe from eccentric wear and scraping wax off the rod pipe cannot be achieved simultaneously when an oil filed sucker rod pump is used as process equipment for the pumping-style oil recovery, prolonging the pump inspection period for a pumping well, reducing the number of operating wells requiring maintenance, effectively centralizing the rod pipe, preventing the rod pipe from eccentric wear, reducing the occurrence of the rod pipe being rejected, lessening the labor intensity of workers, boosting the liquid-producing capacity of an oil well, and reducing the oil recovery cost, and facilitating manufacture.
Description
Technical field
The utility model relates to the fixed sucker rod eccentrically worn preventor of a kind of screw type, belong to oil field sucker rod pumping technical field.
Background technology
The instrument of anti-eccentric wear is many in the sucker rod pumping technology of existing oil field, has only a few preferably.As: the patented technology (patent No. of the fixed centering paraffin scraper for sucker rod of screw type before loose piece formula nylon centralizer, ksk-58 nylon column centralizer and this crime famous person; 02264675.2).They play sucker rod, oil pipe and but deposit following deficiency when setting upright anti-eccentric wear effect: 1) loose piece formula nylon centralizer, can set upright rod tube and slow down the rod tube wearing and tearing, but because this centralizer is formed by two, the lacing wire and the sucker rod of the R=0.5 millimeter of utilization own are chimeric, manually are being sleeved on the sucker rod during use.There are three in this structure, and first centralizer and sucker rod contact surface are gapped than distinct issues, and coupling mechanism force is little, play on the sucker rod body easily during use; It two is that this gap location easily is detained formation water, corrodes sucker rod thus and causes disconnected bar; It three is that centralizer is to be entrenched on the sucker rod at its mutual buckle in boss place by two centralizers that are the half block shape with being connected of sucker rod, if the position of oil well eccentric wear is just in time at the buckle place, when this boss and buckle are worn, centralizer promptly is shed in the oil well, causes card well accident.2) ksk-58 nylon column centralizer, this product can alleviate the wearing and tearing of rod tube, but can only be installed in the screw thread place of rod collar, has following defective: the first is that 8 meters, 9 meters sucker rod intermediate body member position can not implement to set upright, abrasionproof to spacing; It two is that the guiding tooth of centralizer damages easily and comes off, and causes card well accident; It three is, directly through having limited the nylon jacket size greatly, the overcurrent slot cross-section is long-pending limited for steel joint, and resistance is big, influences oilwell produced fluid amount, and the said goods does not all have the function of paraffin cutting.3) the fixed centering paraffin scraper for sucker rod patented technology of screw type before this case inventor, use for many years through the oil field that proving effect is remarkable as a result, but also come with some shortcomings: the first, this centering paraffin scraper both ends of the surface design is the plane, when product is gone into the well use, easily bump well head, cause the centering paraffin scraper damage to the lower surface; It two is that the outer rim of centering paraffin scraper is long bigger with oil well pipe wall friction power, has increased the oil pumper load.
Summary of the invention;
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, but the anti-eccentric wear of a kind of paraffin cutting is proposed, with tubing string inwall frictional force little and with the sucker rod fixed sucker rod eccentrically worn preventor of seamless screw type that is connected firmly.Technical solution of the present utility model is:
Eccentrically worn preventor of the present invention is connected on the sucker rod, is provided with several helical form boss at its circumference, between two described boss chute is arranged, and it is characterized in that its both ends of the surface are arranged to the conical surface.
Described eccentrically worn preventor is connected on the sucker rod by casting.
Described boss also can be designed to straight muscle shape.
The utility model compared with prior art, adopt spiral boss (or straight muscle) design on the cylinder of eccentrically worn preventor outer rim, eccentrically worn preventor becomes the uniform face of cylinder to contact with the oil well pipe inwall, effectively avoided rod and tube partial-wear on the one hand, the wax crystal of tubing string inwall can't be formed, played and not only set upright rod tube, prevented the multi-efficiency of eccentric wear but also paraffin cutting.Eccentrically worn preventor casts in sucker rod, therefore and very close to each other between the sucker rod, can not cause sucker rod because of the corrosion bar that breaks, card well accident is caused in the down-hole that also can not come off behind the surface abrasion, can not scurry the position during use yet, and overcurrent concentrated flow road sectional area adds and very much not produces resistance, does not influence the source oil yield.The both ends of the surface of eccentrically worn preventor are designed to tapered, have rationally changed the length of boss outer rim.Bump well head when having avoided eccentrically worn preventor to go into the well effectively, reduced frictional force, alleviated the load of oil pumper.The position of eccentrically worn preventor and quantity are provided with on demand, have solved curved portion and have set upright, prevent the not enough problem of eccentric wear density.Therefore, solved in the oil field sucker rod pump pump extraction oil process equipment and set upright rod tube, prevented the difficult problem that eccentric wear and paraffin cutting can not carry out simultaneously, prolonged the oil well pump detection period, reduced the maintainability well in operation, set upright rod tube effectively, avoid rod and tube partial-wear, reduced rod tube and scrapped, alleviated working strength of workers, improve oilwell produced fluid amount, reduced cost for oil production, and convenient the manufacturing.
Description of drawings;
Accompanying drawing 1 is a structural representation of the present utility model.
Among the figure, the 1st, sucker rod, the 2nd, eccentrically worn preventor, the 3rd, spiral boss, the 4th, chute, the 5th, the conical surface at eccentrically worn preventor two ends, the 6th, oil well pipe well head, the 7th, rod collar, 8 oil well pipes.
The specific embodiment;
Contrast Fig. 1, cast on sucker rod body 1 correspondence position with wear-resisting, corrosion-resistant, enhancing, macromolecular material toughness reinforcing, self-lubricating, form eccentrically worn preventor 2, four straight muscle boss 3 of helical form are arranged on the cylinder of its outer circumferential sides, between adjacent two boss chute 4 was arranged, the eccentrically worn preventor both ends of the surface are made taper surface 5.
When sucker rod 1 and eccentrically worn preventor 2 are gone into the well, because the effect of the eccentrically worn preventor conical surface 5 can successfully enter in the oil well pipe well head 6.When oil pumper rotated, when pulling sucker rod 1 moved up and down in oil well pipe well head 6 repeatedly, spiral boss 3 was that the face of cylinder contacts with the inwall of oil well pipe well head 6, and at this moment, fretting wear is even, has prevented that effectively concentrated wear from being eccentric wear.Owing in the macromolecular material of making centralizer 2, added sliding agent; and because the eccentrically worn preventor both ends of the surface are made taper surface and are made boss 3 outer rim contraction in lengths; length is more driven rationally; reduced the friction factor when eccentrically worn preventor 2 moves with respect to the oil well pipe inwall; frictional force reduces, thereby has more effectively protected the inwall of sucker rod 1 with oil well pipe well head 6.Be fixed on the sucker rod body 1 because eccentrically worn preventor 2 is casting, do not have the gap with the sucker rod body, so sucker rod 1 can not rupture because of corrosion.Boss 3 on the outer rim cylinder of eccentrically worn preventor 2 is screw types with crossing chute 4, spiral boss 3 forms the face of cylinder with the tubing string inwall and contacts, when sucker rod 1 moves up and down in oil well pipe repeatedly, the inwall of the spiral boss 3 friction oil well pipes on the eccentrically worn preventor 2 outer rim cylinders, spiral boss 3 can't form wax crystal, reaches the purpose of paraffin cutting.Play again simultaneously and set upright rod tube, prevent the multi-efficiency of eccentric wear, and the liquid inflow-rate of water turbine of helicla flute 4 is unaffected.
The boss of eccentrically worn preventor of the present utility model on it also can be made and be distributed on circumferentially several straight muscle shape boss parallel with axis.
Claims (2)
1. the fixed sucker rod eccentrically worn preventor of screw type is connected on the sucker rod, is provided with several helical form boss at its circumference, between two adjacent described boss chute is arranged, and it is characterized in that its two ends make taper surface.
2. the fixed sucker rod eccentrically worn preventor of screw type according to claim 1 is characterized in that described boss also can be designed to the straight muscle shape parallel with axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200334888U CN201236639Y (en) | 2008-03-24 | 2008-03-24 | Helical fixed pumping rod bias-wearing preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200334888U CN201236639Y (en) | 2008-03-24 | 2008-03-24 | Helical fixed pumping rod bias-wearing preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201236639Y true CN201236639Y (en) | 2009-05-13 |
Family
ID=40649378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200334888U Expired - Lifetime CN201236639Y (en) | 2008-03-24 | 2008-03-24 | Helical fixed pumping rod bias-wearing preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201236639Y (en) |
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 |
| RU2534268C2 (en) * | 2012-03-29 | 2014-11-27 | Общество с ограниченной ответственностью "Научно-производственная организация "Инновация" (ООО НПО "Инновация") | Unit for alignment of pump sucker rods |
| CN106639899A (en) * | 2017-01-19 | 2017-05-10 | 程佑富 | Curved limited movement type anti-wear sucker rod and manufacturing method thereof |
| CN113417601A (en) * | 2021-08-24 | 2021-09-21 | 东营金昱技术开发有限公司 | Paraffin-proof oil exploitation device |
-
2008
- 2008-03-24 CN CNU2008200334888U patent/CN201236639Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2534268C2 (en) * | 2012-03-29 | 2014-11-27 | Общество с ограниченной ответственностью "Научно-производственная организация "Инновация" (ООО НПО "Инновация") | Unit for alignment of pump sucker rods |
| CN102720442A (en) * | 2012-07-06 | 2012-10-10 | 常熟市石油固井工具有限公司 | Sucker rod centralizer |
| CN106639899A (en) * | 2017-01-19 | 2017-05-10 | 程佑富 | Curved limited movement type anti-wear sucker rod and manufacturing method thereof |
| CN113417601A (en) * | 2021-08-24 | 2021-09-21 | 东营金昱技术开发有限公司 | Paraffin-proof oil exploitation device |
| CN113417601B (en) * | 2021-08-24 | 2021-12-07 | 东营昱辰技术有限公司 | Paraffin-proof oil exploitation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090513 |
|
| CX01 | Expiry of patent term |