CN106639899A - Curved limited movement type anti-wear sucker rod and manufacturing method thereof - Google Patents
Curved limited movement type anti-wear sucker rod and manufacturing method thereof Download PDFInfo
- Publication number
- CN106639899A CN106639899A CN201710039210.5A CN201710039210A CN106639899A CN 106639899 A CN106639899 A CN 106639899A CN 201710039210 A CN201710039210 A CN 201710039210A CN 106639899 A CN106639899 A CN 106639899A
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- Prior art keywords
- oil pumping
- stop
- sucker rod
- layer
- wear
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000005266 casting Methods 0.000 claims abstract description 20
- 238000005086 pumping Methods 0.000 claims description 79
- 239000000463 material Substances 0.000 claims description 32
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 239000002657 fibrous material Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 210000002435 tendon Anatomy 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 abstract 5
- 238000007790 scraping Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 84
- 239000003129 oil well Substances 0.000 description 11
- 238000005299 abrasion Methods 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 6
- 239000012188 paraffin wax Substances 0.000 description 6
- 230000002265 prevention Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1071—Wear protectors; Centralising devices, e.g. stabilisers specially adapted for pump rods, e.g. sucker rods
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1085—Wear protectors; Blast joints; Hard facing
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/02—Scrapers specially adapted therefor
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an arc-shaped surface limited movement type anti-wear sucker rod and a manufacturing method thereof. The limited movement type anti-wear sucker rod is formed by additionally arranging a plurality of limiters and strengthening bodies on a sucker rod body. The limiters are firmly connected onto the sucker rod body through casting and a strengthening body is arranged between every two adjacent limiters; a plurality of spiral lug bosses and spiral grooves are arranged on the circumferential side of each strengthening body; the spiral groove between every two spiral lug bosses is used as an oil flowing channel; and the outer circle of the strengthening body is of an arc-shaped surface shape. Compared with the prior art, the arc-shaped surface limited movement type anti-wear sucker rod can prevent a connecting hoop of the sucker rod from eccentric wear and a rod body of the sucker rod from the eccentric wear, and can also prevent the sucker rod from being broken and falling off, so that the strengthening bodies can move when necessary; and meanwhile, the served limited movement type anti-wear sucker rod can also be used for scraping wax and the sucker rod can be prevented from releasing.
Description
Technical field
The invention belongs to oil field sucker rod pump pumping DP technology, eccentric abrasion prevention technical field refers to a kind of cambered surface spacing
Mobile Anti-wear oil pumping rod and its manufacture method.
Background technology
In existing oil field sucker rod pump pumping DP technology, the instrument of eccentric abrasion prevention is relatively more, preferably only several
Kind.Such as clamp sucker rod centralizer, column formula oil pumping rod centering device and spiral fixed pumping rod bias-wearing preventer.They are played
Centering sucker rod, prevents the sucker rod partial wear from acting on.All there is a problem of that some are more prominent simultaneously; 1)Clamping hoop type sucker rod is helped
Positive device:Energy centering sucker rod, slows down sucker rod and oil pick-up tube abrasion, but because the centralizer is made up of two half block centralizer bodies,
Lacing wire using its own R=0.5 millimeter is chimeric with sucker rod, again by being manually sleeved on sucker rod when using.This structure is deposited
In three more prominent problems;One is the connection of centralizer body and sucker rod, be by two half block centralizer bodies using itself buckle,
Draw-in groove is mutually fitted together to, and is sleeved on sucker rod.When sucker rod produces eccentric wear, the buckle of centralizer body, draw-in groove are worn and torn, centralizer body
Easily come off, cause the major accident of Ka Jing.Two is the connection due to centralizer body and sucker rod, is set with and using in righting body
Lacing wire it is chimeric with sucker rod, therefore centralizer body is little with sucker rod axial lock clamp force.When using, because of the frictional force in pumpingh well and
Temperature change, easily causes centralizer loosening, and the vibration on sucker rod, the effect failure of eccentric abrasion prevention.Three is installation difficulty;Card
Hoop formula oil pumping rod centering device is after scene is heated centralizer by operating worker boiling water, to be sleeved on sucker rod, centralizer
Internal diameter is difficult to coincide with sucker rod external diameter, therefore installation difficulty.2)Column formula oil pumping rod centering device:There is following defect, because being somebody's turn to do
Centralizer can be only installed on the screw thread of sucker rod two ends box cupling.One is the abrasion that can only slow down rod collar, for length
Oil pumping bar body middle part for 9 meters is unable to righting, abrasionproof, does not have eccentric abrasion prevention effect.Two is the guiding of column centralizer
Tooth is easily damaged and comes off, and causes card well accident.Three is that steel joint is inconsistent with the stress of sucker rod, is easily broken off causing well of lying
Accident.Four is the straight Jing of steel joint big, limits the size of centralizer body, and the oily channel cross-sectional area of stream is limited, and resistance is big, increased and takes out
Oil machine load, affects oilwell produced fluid amount, and the said goods function without paraffin cutting.3)Possess screw type before inventor
Fixed pumping rod bias-wearing preventer patent, is proved for many years through oil field using result, can centering sucker rod, prevent rod collar
It is with the eccentric wear effect is significant in the middle of oil pumping bar body, but its problem for existing:The cylindrical design of eccentrically worn preventor is column, when
Oil well angle of bend is excessive, when forcing rod sag, due to the obstruction at column eccentrically worn preventor product two ends, makes sucker rod itself
Bending strength be restricted, local produce stress, easily cause rod snap.
The content of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, a kind of spacing mobile abrasionproof oil pumping of cambered surface is proposed
Bar, can prevent rod collar eccentric wear from can prevent bar body eccentric wear of pumping again, be also prevented from rod snap, come off, and make
Centralizer body can be moved when needed, while having paraffin cutting, prevent the effect of pumping rod disengaging.
Another object of the present invention is to provide a kind of manufacture method of the spacing mobile Anti-wear oil pumping rod of cambered surface.
For achieving the above object, the technical solution of present invention employing is:A kind of spacing mobile Anti-wear oil pumping rod of cambered surface,
Including oil pumping bar body, the stop in oil pumping bar body and centralizer body, it is characterised in that:Stop is multiple, limit
Position device is fixedly connected in oil pumping bar body by casting, and centralizer body is fixed on taking out between two adjacent stops by casting
On beam hanger body, the centralizer body circumference has several boss and groove, and the groove between two boss is described as the oily passage of stream
Centralizer body is cylindrical in arc surfaced(It is olive-shaped)Or it is cylindric.
The boss and groove are twist or straight tendon shape.
Described stop is divided into internal layer and outer layer, and the internal layer is the flexible material being closely wound in oil pumping bar body
Material, the outer layer is the macromolecular material of casting and wrapping inner layer.
Described flexible material stop internal layer is multilayer elastic fibrous material, the stop internal layer and stop outer layer
Between be additionally provided with the binding layer tied up to the internal layer.
Described binding layer is tied silk, band, cord material are wound in the multilayer elastic fibrous material surface.
The manufacture method of the spacing mobile Anti-wear oil pumping rod of a kind of cambered surface, it is characterised in that operate in the steps below:
(1)Casting forms the stop with internal layer and layer structure
Appropriate line space design stop position is pressed in oil pumping bar body, shape is wound at the stop position with flexible material
Into internal layer, flexible material is bound in oil pumping bar body, then with macromolecular material in the flexible material for tightening by binding layer
Outer layer is cast, and is fixed in oil pumping bar body, forms the stop with internal layer and layer structure;
(2)Centralizer body is cast
One layer of soluble coating is coated in oil pumping bar body between stop, in coating external application macromolecular material cast is poured
Into centralizer body, the centralizer body of the casting is fixed or slides that in use, dissolving coating can dissolve, and centralizer body is in oil pumping
Slide between two stops of bar body.
Adhesive is added when flexible material is wound stop internal layer.
Using the beneficial effect of above-mentioned technical proposal:The spacing mobile Anti-wear oil pumping rod of cambered surface of the present invention, based on sucker rod
Body, stop and centralizer body are combined on the position that oil pumping bar body needs.Because stop is by casting
It is securely attached to pump in bar body, centralizer body is mounted between two adjacent stops, it is possible in oil pumping bar body
Move in the position of needs, mobile distance regards the spacing of stop and determines.
In the manufacture method of the spacing mobile Anti-wear oil pumping rod of the cambered surface, the casting flexible material of stop is described spacing
Device is wound internal layer at position, and flexible material is bound in oil pumping bar body by binding layer, is then existed with macromolecular material
The flexible material outer layer casting for tightening, stop and oil pumping bar body fixation, its axial lock clamp force can reach under normal temperature
14KN-16KN, after heating(70-120℃)Axial lock clamp force can reach 6KN, ensure that stop in use will not play.
The centralizer body coats one layer of soluble coating in casting in oil pumping bar body, in coating external application casting
Macromolecular material, in use, dissolving coating dissolved by produced liquid in oil well, centralizer body can oil pumping bar body two stops it
Between slide.The present invention in use, when pumpingh well angle of bend is excessive, the centralizer body on sucker rod and oil pumping inside pipe wall friction
Power is excessive, and in the state of centralizer body geo-stationary, sucker rod can slide in righting body, it is to avoid sucker rod local buckling
Disconnected bar is caused greatly, and reaching prevents the purpose of rod snap.Using cambered surface spiral boss or cambered surface on the cylinder of centralizer body outer rim
The structure design of straight muscle boss, has the advantage that:1st, make centralizer body form uniform Cylindrical Surfaces Contact with oil pumping inside pipe wall, change
Become the linear contact lay pattern of prior art products, slow down or avoided the eccentric wear of sucker rod, centralizer body and oil pick-up tube.2nd, in oil well
The big well section of interior angle of bend, when centralizer body is by card, because the cylindrical employing cambered surface of centralizer body is designed(It is olive-shaped), centralizer body
Also can accordingly change angle in the presence of sucker rod, it is to avoid rod snap.3rd, cambered surface spiral boss is with respect in oil pick-up tube
Wall, the Cylindrical Surfaces Contact of formation, when centralizer body is moved in oil pick-up tube, making the wax crystal of oil pumping inside pipe wall cannot crystallize, and rise
Arrived can centering sucker rod, oil pick-up tube, prevent eccentric wear again can paraffin cutting multi-functional.4th, stop is firm with oil pumping bar body
Be cast on together, therefore centralizer body can only be moved between stop in setting range, not result in stop displacement, string
It is dynamic, also will not fall off under oil well after centralizer body surface abrasion, cause card well accident.
Due to the design of cambered surface spiral boss, make centralizer body by the original face of cylinder, change into present arc shaped surface(Olive
Shape), centralizer body stream oil channel cross-sectional area is increased, make produced liquid in oil well flowing smooth, reasonably change centralizer body outer rim convex
The length of platform, efficiently avoid when centralizer body is gone into the well and collides well head, reduce the frictional force of centralizer body and oil pick-up tube, alleviate
The load of oil pumper.
It is big for oil well gradient, set the oil well for the reason such as affecting to cause serious eccentric wear, the present invention is by sucker rod
Multiple centralizer bodies righting, effectively prevent rod collar and oil pumping bar body relative to oil pumping inside pipe wall eccentric wear, solution
Determine the box cupling of sucker rod and the eccentric wear problem of body.
Compared with prior art, in solving oil field sucker rod pump pumping DP technology equipment, prevent rod collar and take out
Beam hanger body eccentric wear and a difficult problem for rod snap.Eccentric abrasion prevention and paraffin cutting are realized while the purpose for carrying out, extends oil well inspection
In the pump cycle, upkeep operation well is reduced, extends sucker rod and oil pick-up tube service life, alleviate the labour intensity of workman,
Oilwell produced fluid amount is improve, cost for oil production is reduced, and it is easily manufactured.
Description of the drawings
Fig. 1 is the structural representation of centralizer body of the present invention.
Fig. 2 is the top view that present configuration shown in Fig. 1 is illustrated.
Fig. 3 is the use state schematic diagram of present configuration shown in Fig. 1.
Fig. 4 is the top view of use state schematic diagram shown in Fig. 3.
Fig. 5 is the structural representation of stop of the present invention.
Fig. 6 is the top view of present configuration shown in Fig. 5.
In figure, 1. rod collar, 3. bar body of 2. pumping, the first stop, 4. centralizer body, 5. the second stop, 6.
The screw thread of sucker rod, 7. pumpingh well oil pipe, 8. spiral boss, 9. helical groove(The oily passage of stream), 10. arcwall face.
Specific embodiment
As shown in Fig. 3,4,5,6, by macromolecular material, casting is manufactured into stop on the position that oil pumping bar body 2 needs
3, then pumped in bar body 2 between two adjacent the first stops 3 and the second stop 5 with same material, righting in casting
Body 4, centralizer body 4 can be slide can also be it is fixed, formed centered on bar body 2 of pumping, cast it is upper first and second limit
The spacing mobile Anti-wear oil pumping rod of cambered surface that position device 3,5 and centralizer body 4 are integrated.
As shown in Figure 1, 2, there are four spiral boss 8 in the cambered surface of the outer circumferential sides of the centralizer body 4, its adjacent two spiral prominence
There is helical groove 9 between platform 8 as oil flow channel, the cylindrical of centralizer body 4 makes arcwall face 10(It is olive-shaped).
Several boss of the centralizer body circumference are in straight tendon shape, and the groove between two boss is rectilinear groove, is made
To flow oily passage, the centralizer body is cylindrical cylindrical.
In the curved portion of oil well, cylindrical due to centralizer body is column type to column centralizer in prior art, and
On sucker rod screw thread 6.When oil pumper runs, the oil pumping bar body 2 also operation in pumpingh well oil pipe 7, due to column
The two ends of centralizer hinder the oil pumping natural torsion of bar body 2, and the local for making oil pumping bar body 2 produces stress, thus results in and takes out
The major accident that beam hanger body 2 and column centralizer fracture.
The invention reside in overcoming the product of above-mentioned column centralizer etc. not enough, centralizer body 4 is allow in oil pumping bar body 2
On, move between two first and second adjacent stops 3,5, and the cylindrical of centralizer body 4 is arcwall face.When oil pumping bar body 2
When the big well section of pumpingh well tubing bending angle is back and forth run, centralizer body 4 can change with the Angulation changes of curved portion
Become the angle of itself, eliminate the stress that the local of oil pumping bar body 2 produces, the angle of bend in pumpingh well oil pipe 7 of centralizer body 4 is big
Well section when being obstructed, oil pumping bar body 2 can sliding inside centralizer body 4, between first and second stop 3,5, eliminate because
The stress that oil pumping bar body 2 that pumpingh well tubing bending angle is caused greatly is produced, it is to avoid the serious thing that oil pumping bar body 2 fractures
Therefore.
Cylindrical due to centralizer body 4 is arcwall face(It is olive-shaped), when oil pumper work, oil pumping bar body 2 is in pumpingh well oil
In pipe 7 during reciprocal operation, reduce with the inwall contact surface of pumpingh well oil pipe 7, centralizer body 4 is moved relative to the inwall of pumpingh well oil pipe 7
When frictional force reduce, therefore reduce the load of oil pumper.Cylindrical due to centralizer body 4 is arcwall face(It is olive-shaped), operation
When can smoothly enter in pumpingh well oil pipe 7.
Spiral boss 8 on the cylindrical arc shaped surface of centralizer body 4, helical groove 9 using screw type design, spiral boss 8 with
The inwall of pumpingh well oil pipe 7 forms face contact.Because the maximum stroke of oil pumper operation is 4.5 meters, and centralizer body 4 is helped with another
The distance between roman is less than 4 meters.When bar body 2 of pumping back and forth is run in pumpingh well oil pipe 7, the cylindrical arc of centralizer body 4
The inwall of the friction pumpingh well of spiral boss 8 oil pipe 7 on face, the wax crystal for making crude oil is scraped in pumpingh well oil pipe 7 by centralizer body 4
Remove, reach the purpose of paraffin cutting.Play the purpose of centering sucker rod body 2 again simultaneously, reaching prevents rod collar 1 and sucker rod
Body 2 weares and teares, and the displacement of first and second stop 3,5, vibration is prevented again, is come off, moreover it is possible to the multi-efficiency of paraffin cutting.And spiral is recessed
The stream oil passage increase of groove 9, liquid excessively stream is smooth.
The manufacture method of the spacing mobile Anti-wear oil pumping rod of the cambered surface, it is characterised in that operate in the steps below:
1st, casting forms the stop with internal layer and layer structure
Appropriate line space design stop position, concrete installation method are pressed in oil pumping bar body:Existed with cloth or other flexible materials
Oil pumping bar body tighten it is close be wound internal layer, adhesive is moderately added during winding, by tied silk, band, rope or other articles
Tighten, cast on the cloth for tightening or other flexible material positions outer layer with macromolecular material, so as to make stop, it is ensured that limit
Position device is unable to vibration, displacement in oil pumping bar body.
(2)Centralizer body is cast
One layer of soluble coating is coated in oil pumping bar body between stop, in coating external application macromolecular material cast is poured
Into centralizer body, the centralizer body of the casting is fixed or slides that in use, dissolving coating can dissolve, and centralizer body is in oil pumping
Slide between two stops of bar body.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding can carry out various changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention be defined by the appended.
Claims (7)
1. the spacing mobile Anti-wear oil pumping rod of a kind of cambered surface, including oil pumping bar body, the stop in oil pumping bar body and
Centralizer body, it is characterised in that:Stop is multiple, and stop is fixedly connected in oil pumping bar body by casting, and centralizer body leads to
Cross casting to be fixed in the oil pumping bar body between two adjacent stops, the centralizer body circumference there are several boss and recessed
Groove, the groove between two boss is used as the oily passage of stream, and the centralizer body is cylindrical in arc surfaced(It is olive-shaped)Or it is cylindric.
2. the spacing mobile Anti-wear oil pumping rod of cambered surface as claimed in claim 1, it is characterised in that:The boss and groove are helically
Shape or straight tendon shape.
3. the spacing mobile Anti-wear oil pumping rod of cambered surface as claimed in claim 1 or 2, it is characterised in that:Described stop is divided into
Internal layer and outer layer, the internal layer is the flexible material being closely wound in oil pumping bar body, and the outer layer is to cast and wraps up interior
The macromolecular material of layer.
4. the spacing mobile Anti-wear oil pumping rod of cambered surface as claimed in claim 3, it is characterised in that:Described flexible material stop
Internal layer is multilayer elastic fibrous material, is additionally provided between the stop internal layer and stop outer layer and the internal layer is tied up
Binding layer.
5. the spacing mobile Anti-wear oil pumping rod of cambered surface as claimed in claim 4, it is characterised in that:Described binding layer be tied silk,
Band, cord material are wound in the multilayer elastic fibrous material surface.
6. the manufacture method of the spacing mobile Anti-wear oil pumping rod of a kind of cambered surface, it is characterised in that operate in the steps below:
Casting forms the stop with internal layer and layer structure and presses appropriate line space design stop position in oil pumping bar body,
Internal layer is wound at the stop position with flexible material, flexible material is bound in into oil pumping bar body by binding layer
On, then with macromolecular material tighten flexible material outer layer casting, be fixed on oil pumping bar body on, formed have internal layer and
The stop of layer structure;One layer of soluble coating is coated in the oil pumping bar body that centralizer body casts between stop,
Coating external application macromolecular material casts to form centralizer body, and the centralizer body of the casting is fixed or slides that in use, dissolving is applied
Layer can dissolve, and centralizer body slides between two stops of oil pumping bar body.
7. the method for the spacing mobile Anti-wear oil pumping rod of a kind of manufacture cambered surface as claimed in claim 6, it is characterised in that:In flexibility
Material adds adhesive when being wound stop internal layer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201710039210.5A CN106639899A (en) | 2017-01-19 | 2017-01-19 | Curved limited movement type anti-wear sucker rod and manufacturing method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201710039210.5A CN106639899A (en) | 2017-01-19 | 2017-01-19 | Curved limited movement type anti-wear sucker rod and manufacturing method thereof |
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CN201710039210.5A Pending CN106639899A (en) | 2017-01-19 | 2017-01-19 | Curved limited movement type anti-wear sucker rod and manufacturing method thereof |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109505527A (en) * | 2019-01-10 | 2019-03-22 | 西南石油大学 | A kind of connector and application method for drilling rod and marine riser abrasionproof |
CN113431509A (en) * | 2021-06-21 | 2021-09-24 | 程启翔 | Cambered surface type sucker rod centralizer and preparation method thereof |
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CN109505527A (en) * | 2019-01-10 | 2019-03-22 | 西南石油大学 | A kind of connector and application method for drilling rod and marine riser abrasionproof |
CN109505527B (en) * | 2019-01-10 | 2023-07-14 | 西南石油大学 | Joint for abrasion prevention of drill rod and water isolation pipe and use method |
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Application publication date: 20170510 |