CN202039790U - Alloy spray-welding spiral centering device - Google Patents
Alloy spray-welding spiral centering device Download PDFInfo
- Publication number
- CN202039790U CN202039790U CN2011200661171U CN201120066117U CN202039790U CN 202039790 U CN202039790 U CN 202039790U CN 2011200661171 U CN2011200661171 U CN 2011200661171U CN 201120066117 U CN201120066117 U CN 201120066117U CN 202039790 U CN202039790 U CN 202039790U
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- spiral
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- well
- centralizer
- welding
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Abstract
The utility model relates to an alloy spray-welding spiral centering device which consists of a sucker rod collar and a spiral centralizer, wherein the spiral centralizer is integrally processed and formed by utilizing chromium molybdenum alloy; the centering part is in a cylinder structure with the enlarged diameter and consists of three to five centering strips, and the centring strips are in a spiral structure and are uniformly distributed on the peripheral surface; and a special type alloy wear-resisting protection layer is welded on the surface of the centering part by spray welding and is processed by polishing. The alloy spray-welding spiral centering device solves the problems of the self wearing and the eccentric wearing of an oil pipe, can realize the function of two-way protection, improves the production cycle of an oil well, can be applicable in a sloping-vertical well, a directional well and a horizontal well and is an optimal choice for solving the eccentric wearing of a rod and a pipe.
Description
One, technical field
The utility model belongs to the oil field pumping unit, is a kind of alloy surfacing spiral erection device.
Two, background technology
In tiltedly straight well, directional well, horizontal well are pumped, the suffered pressure alternation degree of sucker rod is big, cause the rod tube contact force big, friction is violent, under various dynamic load effects, make the oil pumping rod centering device actual loading become very complicated, the phenomenon that centralizer and oil pipe produce eccentric wear appears, cause self serious wear for nonmetal erection device because of its material cause, lose centralizing function too early, then aggravate the oil pipe wearing and tearing for the common metal centralizer, shorten pump detection period, influence the oilfield economic benefit.
Three, summary of the invention
The purpose of this utility model is a kind of novel erection device of design, overcomes the deficiencies in the prior art, solves the problem of erection device self wearing and tearing and eccentrically worn tubing, plays the bidirectional protective effect, improves the oil well production cycle.
The purpose of this utility model is achieved in that by rod collar, spiral centralizer to be formed; the spiral centralizer adopts the whole machine-shaping of chrome molybdenum; set upright the cylindrical structure that part increases for diameter; form by three to five righting strips; righting strip is structure twist; and evenly distribute spiral centralizer surface spraying weld special alloy wear-resistant protective layer, and polishing at periphery.
The beneficial effects of the utility model are: erection device integral body has advantages of higher tensile strength and fatigue performance and wear-resistant; high temperature resistant; characteristics such as corrosion-resistant; be connected between two sucker rods with the short circuit form; arrive the position of oil well generation eccentric wear down; centralizer surface high rigidity surfacing coating has extremely strong antiwear characteristic; the finish height; friction factor is low; it is big to have contact surface; the advantage that pressure is little; the surfacing coating will be brought into play the leading role of anti-eccentric wear; in the oil-water mixture body; surfacing coating external surface and tube inner wall form two extremely low smooth contact surfaces of friction factor, have reduced frictional resistance, make erection device reach minimum value to the mechanical wear rate of oil pipe; realize bidirectional protective; save electric energy loss, extension rod; manage application life, improve the oil well economic benefit; be suitable for oblique straight well; directional well; horizontal well uses, and is to solve bar; the optimal selection of pipe eccentric wear.
Four, description of drawings
Fig. 1 is the utility model example structure figure.
Fig. 2 is the profile after cutting open from A-A among Fig. 1.
Five, the specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described.
Form by rod collar 1, spiral centralizer 2, spiral centralizer 2 adopts the whole machine-shaping of chrome molybdenum, sets upright part for the cylindrical structure that diameter increases, and is made up of three to five righting strips, righting strip is structure twist, and evenly distributes at periphery.Spiral centralizer 2 surface spraying weld special alloy wear-resistant protective layers, and polishing, rod collar 1 is threaded with spiral centralizer 2.
The erection device two ends are the sucker rod screw thread, are connected between two sucker rods with the short circuit form, arrive the position of oil well generation eccentric wear down.
Claims (1)
1. alloy surfacing spiral erection device; it is characterized in that: form by rod collar (1), spiral centralizer (2); the spiral centralizer adopts the whole machine-shaping of chrome molybdenum; set upright the cylindrical structure that part increases for diameter; be made up of three to five righting strips, righting strip is structure twist, and evenly distributes at periphery; spiral centralizer (2) surface spraying weld special alloy wear-resistant protective layer, and polishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200661171U CN202039790U (en) | 2011-03-15 | 2011-03-15 | Alloy spray-welding spiral centering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200661171U CN202039790U (en) | 2011-03-15 | 2011-03-15 | Alloy spray-welding spiral centering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202039790U true CN202039790U (en) | 2011-11-16 |
Family
ID=44967239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200661171U Expired - Lifetime CN202039790U (en) | 2011-03-15 | 2011-03-15 | Alloy spray-welding spiral centering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202039790U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041235A (en) * | 2015-09-07 | 2015-11-11 | 山西风雷钻具有限公司 | Transmission shaft shell used for screw drill |
| CN109098672A (en) * | 2018-09-30 | 2018-12-28 | 大庆丹枫石油技术开发有限公司 | A kind of oil pumping rod centering device of heat resistant and wear resistant damage |
-
2011
- 2011-03-15 CN CN2011200661171U patent/CN202039790U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105041235A (en) * | 2015-09-07 | 2015-11-11 | 山西风雷钻具有限公司 | Transmission shaft shell used for screw drill |
| CN109098672A (en) * | 2018-09-30 | 2018-12-28 | 大庆丹枫石油技术开发有限公司 | A kind of oil pumping rod centering device of heat resistant and wear resistant damage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: KARAMAY HONGDU LLC Assignor: Shandong Shouguang Kunlong Petroleum Machinery Co., Ltd, Contract record no.: 2012650000024 Denomination of utility model: Alloy spray-welding spiral centering device Granted publication date: 20111116 License type: Exclusive License Record date: 20120913 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: KARAMAY HONGDU LLC Assignor: Shandong Shouguang Kunlong Petroleum Machinery Co., Ltd, Contract record no.: 2012650000024 Date of cancellation: 20151110 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111116 |
|
| CX01 | Expiry of patent term |