CN207437339U - Wear-resisting oil well pump with surface texture treatment - Google Patents
Wear-resisting oil well pump with surface texture treatment Download PDFInfo
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- CN207437339U CN207437339U CN201721143600.9U CN201721143600U CN207437339U CN 207437339 U CN207437339 U CN 207437339U CN 201721143600 U CN201721143600 U CN 201721143600U CN 207437339 U CN207437339 U CN 207437339U
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- plunger
- surface texture
- pump
- oil
- well
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- 239000003129 oil well Substances 0.000 title claims abstract description 43
- 238000012545 processing Methods 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005461 lubrication Methods 0.000 abstract description 6
- 239000004576 sand Substances 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 description 21
- 239000003921 oil Substances 0.000 description 14
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000007747 plating Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000009096 changqing Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000792 Monel Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model discloses a wear-resisting oil well oil-well pump of surface texture processing, including the pump barrel, the cover is equipped with the plunger in the pump barrel, be connected with on the plunger rather than complex sucker rod, and the internal surface of pump barrel and the surface of plunger all are equipped with surface texture structure. The utility model discloses a laser surface texture technique can produce the lubricated effect of fluid dynamic pressure at the friction surface processing surface texture of pump barrel and plunger under the well fluid lubrication action to reduce the frictional resistance between pump barrel and the plunger, the surface texture can store the sand grain simultaneously, reduces the wearing and tearing of sand grain to the plunger, reduces the wearing and tearing of oil-well pump, extension oil-well pump life.
Description
Technical field
The utility model is related to rod-pumped well sucker rod pumping technical fields, and in particular to a kind of Surface Texture is handled wear-resisting
Oil-well pump of oil well.
Background technology
Rod pumping pump since the features such as its is simple in structure, adaptable, is widely used always by domestic and international each oil field,
In mechanical oil well, rod pumped well accounts for more than the 80% of total well number.Changqing oilfields oil well drives a well close to 50,000 mouthfuls, more than 90%
Oil well to there is rod recovering system.The service life of oil well pump depends greatly on the durable of its own pump barrel-plunger
Property, in failure of pump of pumping caused by 70% abrasion the above are pump barrel and plunger.Particularly Changqing oilfields contain at present into medium
The water phase.The severe corrosive of production fluid, the reasons such as the increase of silt content and the directional well tubular column structure of complexity, causes rod pumping pump
In the presence of being seriously worn, oil well pump frequent failure.
Oil field well oil pump sleeve and plunger are the friction pairs under a pair of of special operation condition item, the pump barrel and plunger of plunger pump
Between be contactless reciprocating motion, the quality of pump barrel and plunger wearability directly influences working life and the inspection of oil well pump
Pump the cycle.Annual replacement oil well pump 23085 in 2015, wherein because abrasion causes pump valve leakage, plunger leakage and valve cover to break
De- oil well pump more than 9600 accounts for the 41.7% of annual replacement oil well pump number.Therefore oil pump sleeve, the wear problem of plunger
Oil well has been seriously affected normally to produce.
By overhauling oil well pump abrasion condition, it is found that oil pump sleeve major embodiment is mechanical wear and abrasive wear, and
The abrasion of plunger is even more serious, focus primarily upon plunger head, at lintel, stop at side and the oil inlet and oil return hole of plunger, abrasion has
Following feature：(1) wear characteristic of plunger head wears maximum herein, has on the contact surface shallow, upper coarse and lower fine under upper depth
Groove mark, fray is creamy white, particularly evident under light illumination.Groove mark depth capacity is maximum wide up to 0.023-0.025 millimeters
It spends for 4-5 millimeters, length is 10 millimeters.(2) abrasion of the wear characteristic of plunger head lintel herein is compared with plunger head
It is small, it is equally above shallow under depth mostly in the not deep rill line of pectination, it is upper coarse and lower fine.(3) plunger stops the wear characteristic for side from skewed slot
Abrasion is gradually reduced upwards at edge, and abrasion width is 5 millimeters, is creamy white, while stops being rounded by blunt for the rib on side.
(4) wear characteristic of plunger lower part shoulder wears very little herein, only there is short microgroove on shoulder circumference.(5) abrasion of plunger bushing
Feature abrasion is mainly bigger than oil return hole place near oil inlet and oil return hole, and at fuel feed hole.The abrading section of fuel feed hole is along hole
Near heart line, Upper wear upwardly extends about 6-7 millimeters since the top edge of hole, about 0.024-0.027 millimeters deep, and lower part is from hole
Lower edge starts to extend downwardly about 4.5 millimeters, and about 0.015-0.017 millimeters deep, abrasion width is about big compared with bore dia.Oil return hole is attached
The abrasion of near surface is about 2-2.5 millimeters wide mainly on the left side, upwardly extends 2-3 millimeters, extends downwardly 4-5 millimeters, is ground on the right of hole
Damage very little.
In terms of tribology angle, pump barrel and piston friction pair and surrounding working environment and condition constitute a tribology system
System, the corrosive wear amount of this system are determined by the summation of the corrosive wear amount of the corrosive wear amount and plunger of pump barrel.And it pumps
Cylinder and the respective corrosive wear amount of plunger are then by the physical mechanical chemical property, mutual movement relation, working environment of constituent material
It is determined with factors such as conditions.Research both at home and abroad before is mainly from the different metal material of selection, such as stainless steel or chromium
Molybdenum steel adds surface carburization, chromium plating etc., and selects high-quality stainless steel, admirality brass, monel metal that chrome-faced, thermal jet is added to contain
Boron, silicon nickel-base alloy in terms of research；In addition it is to be studied in terms of face coat, such as nickel phosphor plating, pressurization nitridation, chromium plating, carbon
Several aspects such as nitrogen permeation promote the abrasion resistance properties of oil well pump, but practical application effect is still bad.
Utility model content
It is existing for solving the purpose of this utility model is to provide a kind of wear-resisting oil-well pump of oil well of Surface Texture processing
The problem of technology, the utility model using laser surface texture technology pump barrel and plunger rubbing surface finished surface texture,
Under well liquid lubricating action, hydrldynamic pressure lubrication effect can be generated, so as to reduce the frictional resistance between pump barrel and plunger, simultaneously
Surface Texture can store sand grains, reduce abrasion of the sand grains to plunger, reduce the abrasion of oil well pump, extend oil well pump and use the longevity
Life.
In order to achieve the above objectives, the utility model adopts the following technical solution：
A kind of wear-resisting oil-well pump of oil well of Surface Texture processing, including pump barrel, is arranged with plunger, is connected on plunger in pump barrel
There is the sucker rod coordinated with it, and the inner surface of pump barrel and the outer surface of plunger are equipped with Surface Texture structure.
Further, the Surface Texture structure is uniformly distributed several micron order pits.
Further, the micron order pit is circular pit.
Further, the spacing between the center of adjacent circular pit is 300 μm.
Further, a diameter of 100 μm of the circular pit.
Further, the depth of the circular pit is 8~9 μm.
Compared with prior art, the utility model has technique effect beneficial below：
The micron order pit of the utility model laser beam processing can be generated in oil pump sleeve and plunger rubbing surface
Hydrodynamic lubrication effect generates additive fluid dynamic pressure, improves the bearing capacity of lubricating oil film, so as to reduce frictional resistance, improves
The abrasion resistance properties of plunger and pump barrel；In addition abrasive dust caused by micron order pit can store abrasion and the small sand of partial particulate
Grain reduces abrasive dust and sand grains and the height of rubbing surface is worn；In pump barrel, well liquid serves as lubricating oil, and micron order pit is as micro- storage
Oil sump provides lubricating oil to surface of friction pair, reduces the friction of pump barrel and plunger；The wear-resisting oil-well pump of oil well of the utility model can
Number is pumped because wearing the inspection that can not be continuing with to reduce, production maintenance cost is reduced, reduces when being produced caused by examining pump
Rate influences and crude oil loss.
Further, by setting the size of micron order pit, in the case where ensureing rubbing surface finish, to greatest extent
Reduce the friction of pump barrel and plunger.
Description of the drawings
Fig. 1 is the utility model structure diagram；Wherein：1st, sucker rod；2nd, pump barrel；3rd, plunger；
Fig. 2 is the Surface Texture schematic diagram of pump barrel and plunger in Fig. 1；
Fig. 3 is the comparison diagram for having the secondary and untextured friction of the friction of laser surface texture secondary；
Fig. 4 for no Surface Texture rub secondary friction 400 it is small when after without Surface Texture metal surface observation chart, wherein (a)
For metal surface 400 it is small when friction test before morphology observations figure；(b) without Surface Texture metal surface morphology observations figure；
Fig. 5 be have the secondary friction 550 of Surface Texture friction it is small when after Surface Texture metal surface friction it is front and rear to having a competition
Test morphology observations figure, wherein (a) for have Surface Texture metal 500 it is small when friction test rear surface morphology observations figure；(b) it is to have table
Plane texture metal surface morphology observations figure；
Fig. 6 is Surface Texture line drawing, wherein (a) is metal surface texture surface figure；(b) it is metal surface texture
Line drawing (part)；
Fig. 7 is Surface Texture frictional behaviour comparison diagram.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
Referring to Fig. 1 and Fig. 2, a kind of wear-resisting oil-well pump of oil well of Surface Texture processing including pump barrel 2, is arranged in pump barrel 2
Plunger 3 is connected with the sucker rod 1 coordinated with it on plunger 3, and the outer surface of the inner surface of pump barrel 2 and plunger 3 is equipped with surface
Texture structure, Surface Texture structure are uniformly distributed several micron order pits, the spacing between the center of adjacent micron order pit
For 300 μm, a diameter of 100 μm of micron order pit, depth is 8~9 μm, as shown in Figure 6.
The operating process of the utility model is described in detail below：
The utility model laser beam processes micron order pit in the pump barrel and plunger rubbing surface of oil well pump, changes it
Surface texture, so as to reduce frictional resistance, improve abrasion resistance properties, extend oil well pump service life.From simulation laboratory test
Result figure 3 is as can be seen that the friction accessory torque for having laser surface texture will be significantly lower than untextured friction pair, from Fig. 4-Fig. 5
As can be seen that noticeable wear groove occurs in rear surface when the sealing surface friction 400 without Surface Texture is small, and there is the close of Surface Texture
After when front cover friction 550 is small, for two rubbing surfaces without noticeable wear feature, this shows that Surface Texture is reducing frictional force and improving wear-resisting
Damage aspect of performance plays an important role.Model calculating research is established by laboratory and shows that the micron order processed by laser beam is recessed
Hole can generate hydrodynamic lubrication effect, improve the bearing capacity of lubricating oil film, so as to reduce frictional resistance, improve wear resistance
Can, and abrasive dust caused by abrasion can be stored, mitigate abrasion of the abrasive dust to rubbing surface.Therefore by high energy laser beam processing micron
Grade Surface Texture technology can be applied to inside surface of subsurface pump barrel and plunger surface pattern handling, can thus reduce pump barrel and
Friction between plunger reduces the abrasion of oil well pump, extends oil well pump service life.
Test surfaces texture sample under DRY SLIDING with the frictional behaviour under the conditions of grease lubrication, and with polished rod sample
(after polishing) is compared, and is steel ball to mill material, working condition is：Load 1kg, reciprocating stroke 2.2mm, reciprocating frequence 2Hz.
As shown in fig. 7, for test result, the presence of Surface Texture effectively improves the coefficient of friction of metal material, due to table
Face hole plays an important role of to store lubricant, can realize the effect of lubrication assistant, can reduce oil pump plunger piston and pump barrel
Friction, reduces the wear phenomenon between them.
Claims (4)
1. a kind of wear-resisting oil-well pump of oil well of Surface Texture processing, which is characterized in that including pump barrel (2), pump barrel is arranged in (2)
Plunger (3) is connected with the sucker rod (1) coordinated with it, and the outer surface of the inner surface of pump barrel (2) and plunger (3) on plunger (3)
It is equipped with Surface Texture structure；The Surface Texture structure is uniformly distributed several micron order pits；The micron order pit is circle
Shape pit.
A kind of 2. wear-resisting oil-well pump of oil well of Surface Texture processing according to claim 1, which is characterized in that adjacent circle
Spacing between the center of shape pit is 300 μm.
A kind of 3. wear-resisting oil-well pump of oil well of Surface Texture processing according to claim 1, which is characterized in that the circle
A diameter of 100 μm of shape pit.
A kind of 4. wear-resisting oil-well pump of oil well of Surface Texture processing according to claim 1, which is characterized in that the circle
The depth of shape pit is 8~9 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721143600.9U CN207437339U (en) | 2017-09-07 | 2017-09-07 | Wear-resisting oil well pump with surface texture treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721143600.9U CN207437339U (en) | 2017-09-07 | 2017-09-07 | Wear-resisting oil well pump with surface texture treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207437339U true CN207437339U (en) | 2018-06-01 |
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ID=62301365
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721143600.9U Active CN207437339U (en) | 2017-09-07 | 2017-09-07 | Wear-resisting oil well pump with surface texture treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207437339U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206723A (en) * | 2019-07-18 | 2019-09-06 | 赛腾机电科技（常州）有限公司 | A kind of friction pair for plunger rod and plunger hole |
| CN111020448A (en) * | 2019-12-12 | 2020-04-17 | 北京工商大学 | Wear-resistant anti-corrosion sucker rod coupling with oil storage and oil supplement channel on surface and preparation process |
-
2017
- 2017-09-07 CN CN201721143600.9U patent/CN207437339U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206723A (en) * | 2019-07-18 | 2019-09-06 | 赛腾机电科技（常州）有限公司 | A kind of friction pair for plunger rod and plunger hole |
| CN111020448A (en) * | 2019-12-12 | 2020-04-17 | 北京工商大学 | Wear-resistant anti-corrosion sucker rod coupling with oil storage and oil supplement channel on surface and preparation process |
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