CN106401501B - Multi-functional tube rod protection device and its manufacture method - Google Patents
Multi-functional tube rod protection device and its manufacture method Download PDFInfo
- Publication number
- CN106401501B CN106401501B CN201611085594.6A CN201611085594A CN106401501B CN 106401501 B CN106401501 B CN 106401501B CN 201611085594 A CN201611085594 A CN 201611085594A CN 106401501 B CN106401501 B CN 106401501B
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- centralizer
- sustained release
- sucker rod
- anode
- release shell
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000013268 sustained release Methods 0.000 claims abstract description 62
- 239000012730 sustained-release form Substances 0.000 claims abstract description 62
- 230000000712 assembly Effects 0.000 claims abstract description 28
- 238000000429 assembly Methods 0.000 claims abstract description 28
- 239000004677 Nylon Substances 0.000 claims abstract description 27
- 229920001778 nylon Polymers 0.000 claims abstract description 27
- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 16
- 230000002459 sustained effect Effects 0.000 claims abstract description 15
- 238000003466 welding Methods 0.000 claims abstract description 6
- 238000005266 casting Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims abstract description 4
- 210000003205 muscle Anatomy 0.000 claims description 30
- 238000005253 cladding Methods 0.000 claims description 25
- 229910001051 Magnalium Inorganic materials 0.000 claims description 8
- 238000001746 injection moulding Methods 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 abstract description 13
- 230000007797 corrosion Effects 0.000 abstract description 13
- 239000007788 liquid Substances 0.000 description 16
- 239000000463 material Substances 0.000 description 9
- 238000003487 electrochemical reaction Methods 0.000 description 7
- 239000003129 oil well Substances 0.000 description 6
- 239000001993 wax Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000376 reactant Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000010405 anode material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000003786 synthesis reaction 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
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1085—Wear protectors; Blast joints; Hard facing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- 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
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
-
- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/02—Equipment or details not covered by groups E21B15/00 - E21B40/00 in situ inhibition of corrosion in boreholes or wells
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
A kind of multi-functional tube rod protection device, including upper centralizer, lower centralizer, sacrificial anode, sustained release shell, two anode assemblies make-ups of sacrificial anode are encased by sustained release shell and are fixed on sucker rod outer wall, and sacrificial anode both ends are molded fixed upper and lower centralizer respectively.The multi-functional tube rod protection device of the present invention can prevent corrosion and the eccentric wear of R a T.A kind of manufacture method of multi-functional tube rod protection device, comprises the following steps：Casting anode assemblies；Processing prepares sustained release shell；Prepare sucker rod；Assembling anode component and the gap that is sustained shell to sucker rod and will be sustained on shell are welded；Drying makes the nylon powder used in upper and lower centralizer；Nylon powder is put into injection machine hopper; the good anode assemblies of assembly welding, sustained release shell and sucker rod are put into injection machine mould; nylon powder is cast in centralizer and lower centralizer; anode assemblies and sustained release shell are fixed on sucker rod by centralizer, so far complete the manufacture of multi-functional tube rod protection device.
Description
Technical field
The present invention relates to system protection device under a kind of rod-pumped well, more particularly to a kind of protection of R a T
Device；The invention further relates to a kind of manufacture method of the protection device of R a T.
Background technology
With the progressively exploitation in oil field, there is the characteristics of inclined shaft ratio is high, aqueous high, corrosion rate is high in oil well.Inclined shaft
Moisture content and salinity rise, the eccentric wear corrosion aggravation of sucker rod, water and oil control and effective extract are more difficult.Oil well synthesis contains
Water 90.6%, wherein rod-pumped well average aqueous 79.8%, poor lubrication between rod tube, fretting wear are serious.
Partly oily area's geological structure is complicated, and Produced Fluid Property is various, and salinity burn into gas attack and bacterial corrosion etc. are a variety of
Corrosion factor is simultaneously deposited, and electrochemical corrosion accounts for more than the 98% of toatl proportion.During "the 10th five-years", because of corrosion, the well of well 124 is secondary every year, loss
11000000 yuan.Bar eccentric wear, corrosion cause short-lived well to account for short 81% of bar, and pipe burn into eccentric wear causes pipe leakage to account for the 83% of pipe leakage.
When carrying out pumping operation, sucker rod is pumped in oil pipe, inside sucker rod outer wall and oil pipe
Easily contact and produce eccentric wear, this eccentric wear is easily damaged oil pipe and sucker rod.Oil pipe leakage can occur for Tubing failure, and need
Oil pipe is changed, can so increase oil well fund input；Sucker rod is given birth to by easily occurring to break after eccentric wear to take off in well
Production accident, and then greater loss is caused to the economy in oil field, it is therefore desirable to the protection device of R a T, to prevent from pumping
Bar and oil pipe are corroded and eccentric wear.
The product of anticorrosion and eccentric wear has in the prior art：Internal lining pipe is set, and internal lining pipe can prevent eccentric wear and prevent oil
The corrosion of pipe and wax deposition, but the corrosion of sucker rod is not avoided that, and set the cost of internal lining pipe higher；Sucker rod is set to help
Positive device, eccentric wear can be prevented, but can not solve etching problem；Anticorrosion medicine is added into well, easily environment is polluted,
And different wells due in well condition difference need to be equipped with different medicines；Anticorrosion sucker rod energy anticorrosion still can not be anti-bias
Mill；Set anode that sucker rod can be protected from corrosion, but may not apply to eccentric wear well.Asked below above product generally existing
Topic：Short life, anode combine insecure caducous problem；Or the connection method of centralizer, anode and sucker rod can destroy
The problem of intensity of sucker rod；The problem of time of product structure complexity, cost height, increase manufacture and installation.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of multi-functional tube rod protection device, and it can comprehensively solve to take out
The eccentric wear and etching problem of the device such as sucker rod, oil pipe, box cupling, oil pump in oil machine well.
The multi-functional tube rod protection device of the present invention, including the sacrificial anode formed by two anode assemblies make-ups, two sun
Pole component is semi-circular shape housing made of magnalium kirsite, and two anode assemblies make-ups are simultaneously fixed on the outer wall of sucker rod,
The diameter of the inwall of sacrificial anode is equal with the diameter of sucker rod.
The multi-functional tube rod protection device of the present invention, wherein also including sustained release shell, the sustained release shell is to have a seam vertically
The cylinder of the stainless steel of gap, the sustained release shell compress the outer wall for being wrapped in sacrificial anode, and the outer surface of the sustained release shell is equal
It is even to be provided with several through holes.The setting of sustained release shell can prevent the outer wall of sacrificial anode from all being contacted with well liquid, extend to pipe
The protection period of bar, the size of through hole can control the contact area of anode and well liquid, and it directly affects the release of anode material
Speed, the rate of release of anode material is set to be matched with well liquid to the corrosion rate of tube rod, on the basis of it can protect tube rod, to the greatest extent
The rate of release of the material of control anode may be reduced, to extend the protection period to tube rod.
The multi-functional tube rod protection device of the present invention, wherein the both ends of the sacrificial anode have been respectively fixedly connected with righting
Device, lower centralizer, the upper centralizer and lower centralizer are hollow and be set with and be fixed on the outer wall of sucker rod, the upper centralizer and
The radial dimension of lower centralizer is less than the radial dimension of oil pipe.The setting of upper centralizer and lower centralizer can prevent inclined between tube rod
Mill.
The multi-functional tube rod protection device of the present invention, wherein the length of the sustained release shell is more than the length of sacrificial anode, oil pumping
The outer wall of bar, the upper surface of sacrificial anode, it is sustained between the inwall of shell and forms first annular space, the outer wall of sucker rod, sacrifices
The second annular space is formed between the lower surface of anode, the inwall of sustained release shell, the body of the upper centralizer forms the first extension
Portion and the first cladding ring, the body of the lower centralizer form the second extension and the second cladding ring, and first extension is stretched
Enter the first annular space and docked with the upper surface of sacrificial anode, the first cladding ring is coated on outside the top of sustained release shell
Surface, second extension stretch into second annular space and docked with the lower surface of sacrificial anode, second cladding
Ring is coated on the lower external face of sustained release shell.
The multi-functional tube rod protection device of the present invention, wherein the upper centralizer, lower centralizer are molded using high-strength nylon
Form.Using material of the high-strength nylon as upper and lower centralizer so that manufactured upper and lower centralizer has intensity high, wear-resisting
The advantages of degree is high, light weight.
The multi-functional tube rod protection device of the present invention, wherein the body surface of the upper centralizer forms a plurality of first straight muscle,
The body surface of the lower centralizer forms first formed with a plurality of second straight muscle, between two neighboring first straight muscle and crosses chute,
Second is formed between two neighboring second straight muscle and crosses chute.First, which crosses chute and second, crosses flowing of the chute for well liquid.
The multi-functional tube rod protection device of the present invention, wherein axis of a plurality of first straight muscle along upper centralizer uniformly divides
Cloth, axis of a plurality of second straight muscle along lower centralizer are uniformly distributed, and the first straight muscle and the second straight muscle interlock 45 degree of arrangements.Such a cloth
Putting can make sucker rod, in the center of oil pipe, further improve the eccentric abrasion prevention effect between tube rod by righting.
The multi-functional tube rod protection device difference from prior art of the present invention is the multi-functional tube rod protection dress of the present invention
The sacrificial anode including being formed by two anode assemblies make-ups is put, two anode assemblies are semicircular ring made of magnalium kirsite
Shape housing, two anode assemblies make-ups are simultaneously fixed on the outer wall of sucker rod.When electrochemical reaction occurs, due to magnalium kirsite
Activity be higher than steel, sacrificial anode is first corroded, so as to protect sucker rod, sacrificial anode and the corrosive deposit reaction in well liquid and
The reactant of generation is dispersed in well liquid, and is adsorbed and formed diaphragm on sucker rod, tube inner wall, avoids R a T
Be corroded, even if diaphragm is destroyed, newly-generated reactant can also form diaphragm again in the position rapidly, prevent by
The sucker rod or oil pipe of abrasion are corroded, and the multi-functional tube rod protection device of the present invention can comprehensively solve to pump in rod-pumped well
The eccentric wear and etching problem of the devices such as bar, oil pipe, box cupling, oil pump.
The invention solves another technical problem be to provide a kind of manufacture method of multi-functional tube rod protection device, should
Manufacture method can make multi-functional tube rod protection device and sucker rod fixation, and using the multi-functional tube of manufacture method manufacture
Bar protection device does not influence the intensity of sucker rod, and can prevent R a T eccentric wear and be corroded.
The manufacture method of the multi-functional tube rod protection device of the present invention, including following steps：1) casting anode assemblies；2)
Processing prepares sustained release shell；3) sucker rod is prepared；4) assembling anode component and the seam that is sustained shell to sucker rod and will be sustained on shell
Gap is welded；5) drying makes upper centralizer and the nylon powder used in lower centralizer；6) nylon powder is put into injection machine hopper,
The good anode assemblies of assembly welding, sustained release shell and sucker rod are put into injection machine mould, nylon powder is heated fusing and is molded into
Type is upper centralizer and lower centralizer, and after nylon powder to be melted solidification, upper centralizer and lower centralizer are bonded in sucker rod
It is upper and anode assemblies and sustained release shell are fixed on sucker rod, so far complete the manufacture of multi-functional tube rod protection device and multi-functional
The connection of tube rod protection device and sucker rod.
The manufacture method difference from prior art of the multi-functional tube rod protection device of the present invention is that the present invention is multi-functional
The manufacture method of tube rod protection device on sucker rod, is formed as upper centralizer, lower centralizer using the mode hot-cast of injection
One, fixation, during injection, the body of upper centralizer forms the first extension and the first cladding ring, the filling of the first extension
In first annular space, the first cladding ring is coated on the outer surface of upper of sustained release shell, and the body of lower centralizer forms second and prolonged
Extending portion and the second cladding ring, the second extension are filled in the second annular space, and the second cladding ring is coated on the bottom of sustained release shell
Outer surface, by such a mode, anode assemblies and sustained release shell are fixed on sucker rod by upper centralizer, lower centralizer, that is, are sacrificed
The fixed form of anode neither welding nor the mechanical structure connection such as threaded connection, neither influences the intensity of sucker rod,
It is not required to increase other devices on sucker rod, upper and lower centralizer is avoided that sucker rod partial wear, sacrificial when electrochemical reaction occurs
Domestic animal anode is first corroded, and protects sucker rod, and the absorption of simultaneous reactions thing forms protection on the body of rod of sucker rod and the tube wall of oil pipe
Film, R a T is prevented to be corroded, i.e., the more work(manufactured using the manufacture method of the multi-functional tube rod protection device of the present invention
Energy tube rod protection device can prevent the eccentric wear of R a T and be corroded, and not influence strength of oil pump rod, can be comprehensive
Ground solves the eccentric wear and etching problem of the device such as sucker rod, oil pipe, box cupling, oil pump in rod-pumped well.
The multi-functional tube rod protection device of the present invention is described further below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the front view of the multi-functional tube rod protection device of the present invention；
Fig. 2 is Fig. 1 top view；
Fig. 3 is Fig. 1 stereogram；
Fig. 4 is Fig. 3 assembling schematic diagram；
Fig. 5 is sectional views of the Fig. 1 along B-B；
Fig. 6 is the main sectional view of the multi-functional tube rod protection device of the present invention, upper centralizer and lower centralizer not shown in it；
Fig. 7 is the three-dimensional structure diagram of upper centralizer；
Fig. 8 is the enlarged drawing at A in Fig. 1.
Embodiment
With reference to shown in Fig. 1-Fig. 4, Fig. 8, the multi-functional tube rod protection device of the present invention includes sustained release shell 3, sacrificial anode 2, divided
The upper centralizer 1 at the both ends of sacrificial anode 2 and lower centralizer 1 ' are not arranged on, and sacrificial anode 2 is by two make-ups of anode assemblies 21
The annular housing formed, two anode assemblies 21 are semi-circular shape housing made of magnalium kirsite, two anode assemblies
21 make-ups and the outer wall for being fixed on sucker rod 4 ', the internal diameter of sacrificial anode 2 is equal with the diameter of sucker rod 4 ', and sustained release shell 3 is edge
Axially there is the cylinder of the stainless steel in a gap, sustained release shell 3 compresses the outer wall for being wrapped in sacrificial anode 2, is sustained the interior of shell 3
Footpath is equal with the external diameter of sacrificial anode 2, and the outer surface of sustained release shell 3 is evenly arranged with several through holes 31.
As shown in figure 1, upper centralizer 1 is located at the upper end of sacrificial anode 2, lower centralizer 1 ' is located at the lower end of sacrificial anode 2,
Upper centralizer 1 and lower centralizer 1 ' are hollow and be set with and be fixed on the outer wall of sucker rod 4 ', the footpath of upper centralizer 1 and lower centralizer 1 '
To the radial dimension for being dimensioned slightly smaller than oil pipe.
With reference to shown in Fig. 1, Fig. 3, Fig. 5, Fig. 6, Fig. 8, the length of sustained release shell 3 is more than the length of sacrificial anode 2, sucker rod 4 '
Outer wall, sacrificial anode 2 upper surface, be sustained between the inwall of shell 3 and form first annular space 5, it is the outer wall of sucker rod 4 ', sacrificial
The second annular space 6 is formed between the lower surface of domestic animal anode 2, the inwall of sustained release shell 3, the body of upper centralizer 1 forms first and prolonged
Extending portion 11 and first coats ring 12, and the body of lower centralizer 1 ' forms the second extension 11 ' and the second cladding ring 12 ', and first prolongs
Extending portion 11 stretches into first annular space 5 and docked with the upper surface of sacrificial anode 2, and the first cladding ring 12 is coated on sustained release shell 3
Outer surface of upper, the second extension 11 ' stretch into the second annular space 6 and docked with the lower surface of sacrificial anode 2, the second cladding ring
12 ' are coated on the lower external face of sustained release shell 3.
Upper centralizer 1, lower centralizer 1 ' are molded using high-strength nylon, it is for instance possible to use nylon66 fiber, nylon 6
Or material of the high-strength nylon such as glass fibre reinforced nylon as centralizer.With reference to shown in Fig. 1, Fig. 3, Fig. 4, Fig. 7, above help
Positive device 1 is identical with the structure of lower centralizer 1 ', and the body surface of upper centralizer 1 forms a plurality of first straight muscle 13, lower centralizer 1 '
Body surface formed with a plurality of second straight muscle 13 ', in conjunction with shown in Fig. 2, axis of a plurality of first straight muscle 13 along upper centralizer 1
It is uniformly distributed, first is formed between two neighboring first straight muscle 13 and crosses chute 14, a plurality of second straight muscle 13 ' is along lower centralizer 1 '
Axis is uniformly distributed, and second is formed between two neighboring second straight muscle 13 ' and crosses chute 14 ', the first straight 13 and second straight muscle 13 ' of muscle
45 degree of interval arrangement, first, which crosses chute 14 and second, crosses the flowing that chute 14 ' is used for well liquid.
The fixed form of sacrificial anode 2 is in the multi-functional tube rod protection device of the present invention：Sustained release shell 3 makes sacrificial anode 2 exist
Sucker rod radial positioning, make sacrificial anode 2 axially fixed in sucker rod by the upper centralizer 1 and lower centralizer 1 ' of injection molding
Position.When being such as molded centralizer, form the first extension 11, the second extension 11 ', the first cladding ring 12, second and coat ring 12 ',
First extension 11 is filled in first annular space, and the second extension 11 ' is filled in the second annular space, the first cladding ring
12 are coated on outside sustained release shell 3, and the second cladding ring 12 ' is coated on outside sustained release shell 3, and the endoporus of upper and lower centralizer is and sucker rod
4 ' is fixed, has the function that fixed sacrificial anode 2 and sucker rod 4 '.
Upper centralizer 1, lower centralizer 1 ' are cylinder in the multi-functional tube rod protection device of the present invention, are formed on its body
Muscle is straight muscle, in actual applications, in addition to using the straight muscle type centralizer of such a cylinder, can also use cylindrical screw muscle type or spinning
Hammer the centralizer of spiral bar type into shape.Multi-functional tube rod protection device can select phase according to oil well eccentric wear situation and wax deposition situation
The nylon material matched somebody with somebody, the profile of centralizer, such as when well liquid viscosity is higher, the straight muscle type of the big cylinder of area of passage can be selected
Centralizer, when wax deposition is more serious, selection is not high in well liquid viscosity with the spindle spiral bar type centralizer for strengthening paraffin cutting effect
Or wax deposition it is not serious when, cylindrical screw muscle type centralizer can be selected, in eccentric wear well section, wear-resistant reinforced nylon may be selected
Material of the material as upper and lower centralizer, such as select material of the glass fibre reinforced nylon as centralizer.
The multi-functional tube rod protection device of the present invention, including upper centralizer 1, lower centralizer 1 ' including two anode assemblies
Sacrificial anode 2, sustained release shell 3, two anode assemblies make-ups are encased by sustained release shell 3 and are fixed on the outer wall of sucker rod 4 ', sacrificial anode 2
Both ends are molded fixed upper centralizer 1 and lower centralizer 1 ' respectively.The multi-functional tube rod protection device of the present invention can prevent sucker rod and
The corrosion of oil pipe and eccentric wear.
In use, the system that the multi-functional tube rod protection device of the present invention is passed through into the multi-functional tube rod protection device in the present invention
Method is made on sucker rod.There are two kinds of situations during use：First, before user scene is transported, multi-functional tube rod is protected
Device is completed and the installation of sucker rod in factory building；Second, injection machine is transported into user scene is processed operation, wherein can
Use the applicant apply Application No. 201510843191.2, Publication No. 105397971A, publication date 2016-03-
16th, entitled skid-mounted type integrates integrated through injection molding machine and is processed.It can be set in different well wellbores according to actual conditions more
The quantity of function tube rod protection device, for example, when the pump depth of oil well is 2000 meters, submergence degree is 200 meters, more than oil well pump
A set of multi-functional tube rod protection device can be filled on 200 meters of sucker rod, above every sucker rod, at 200 meters to 600 meters, every two
A set of multi-functional tube rod protection device is installed on root sucker rod, 600 meters above according to realistic well condition determine clipping room away from and quantity；
In eccentric wear well section, a set of multi-functional tube rod protection device can be installed with the both ends of every sucker rod.The multi-functional tube rod of the present invention
After protection device is gone into the well together with sucker rod 4 ', when electrochemical reaction occurs, because sacrificial anode 2 uses magnalium kirsite system
Into, sucker rod 4 ', which is adopted, to be made of a steel, and the activity of magnalium kirsite is higher than the activity of steel, so, sacrificial anode 2 is first corroded, sacrificial
Domestic animal anode 2 is wrapped in sucker rod 4 ' outside, and the endoporus of sacrificial anode 2 contacts the anode and the moon that form electrochemical reaction with sucker rod
Pole, so as to protect be sacrificed the wrapping portion of anode 2 sucker rod and sacrificial anode about 2 a range of sucker rod it is not rotten
Erosion, meanwhile, the reactant that sacrificial anode 2 reacts and generated with the corrosive deposit in well liquid is dispersed in well liquid, while reaction one
Side absorption is not sacrificed the sucker rod 4 ' of the wrapping portion of anode 2 in underground, forms diaphragm on tube inner wall, on box cupling, avoids
R a T is corroded, even if diaphragm is worn, newly-generated reactant can also rapidly in the abration position again
Diaphragm is formed, prevents the sucker rod that is worn or oil pipe to be corroded；The setting of upper centralizer and lower centralizer can make sucker rod
Center in oil pipe, contact friction of the sucker rod with oil pipe is avoided, because sacrificial anode is located at upper centralizer with
Between centralizer, sacrificial anode and oil pipe friction can be avoided, protects sacrificial anode 2 from physical abrasion；Being used in the present invention will
Sacrificial anode is pressed on sucker rod by being sustained shell, and real by way of the centralizer axially position being moulded on sucker rod
Now with the connection of sucker rod, the intensity of sucker rod is not influenceed；Using high-strength nylon as upper centralizer 1, lower centralizer 1 '
Material so that manufactured upper centralizer 1, lower centralizer 1 ' have the advantages of intensity is high, abrasion resistance is high, light weight；Through hole 31
Size can control the contact area of sacrificial anode 2 and well liquid, and it directly affects the rate of release of sacrificial anode 2, make sacrifice positive
The rate of release of pole 2 matches with well liquid to the corrosion rate of tube rod, on the basis of it can protect tube rod, slows down sacrifice as far as possible
The rate of release of anode material, make rate of release as small as possible, extend the protection period to tube rod.The multi-functional tube rod of the present invention is protected
Before electrochemical reaction occurs, the inwall of sustained release shell 3 is bonded protection unit with the outer wall of sacrificial anode 2, during reaction, is not sustained
The sacrificial anode 2 (i.e. with the sacrificial anode 2 of the corresponding part of through hole 31) of the covering part of shell 3 contacts with well liquid to react, and is sustained
Gap is produced between the inwall of shell 3 and the outer wall of sacrificial anode 2, well liquid enters in gap, gradually by the covering part of sustained release shell 3
Sacrificial anode 2 also react, with the progress of reaction, the gap that is sustained between the inwall of shell 3 and the outer wall of sacrificial anode 2
Filled by reactant, so slowed down the reaction speed of sacrificial anode and well liquid, but sacrificial anode is still carrying out W-response simultaneously
Consumption, until sacrificial anode 2 all plays a role.The multi-functional tube rod protection device of the present invention, is protected when electrochemical reaction occurs
The formation of cuticula makes the present invention have antiscale, wax control function prior to the attachment of other materials such as dirt and pertroleum wax.
For multi-functional tube rod protection device with sucker rod when being connected by the way of injection, its connection procedure is as follows：By anode
The make-up of component 21 is fixed on the outer wall of sucker rod 4 ', and two make-ups of anode assemblies 21 form sacrificial anode 2, strut the seam of sustained release shell 3
Gap, shell 3 will be sustained and be wrapped in the outer wall of sacrificial anode 2 and filling is welded into gap and polished flat, be sustained shell 3 by sacrificial anode
2 are pressed on the outer wall of sucker rod 4 ', and high-strength nylon powder is put into injection machine hopper, afterwards by sacrificial anode 2, sustained release shell 3,
The entirety that the three of sucker rod 4 ' is formed is put into injection machine, and it is upper centralizer that high-strength nylon powder, which is heated fusing injection molding,
1 and lower centralizer 1 ', the body of upper centralizer 1 forms the first extension 11, first cladding ring 12, this bodily form of lower centralizer 1 '
Into the second extension 11 ', the second cladding ring 12 ', the first extension 11 is filled in first annular space, the second extension 11 '
It is filled in the second annular space, the first cladding ring 12 is coated on outside sustained release shell 3, and the second cladding ring 12 ' is coated on sustained release shell 3
Outside, after nylon to be melted solidification, upper centralizer 1 and lower centralizer 1 ' are bonded on sucker rod 4 ', upper centralizer 1 and lower righting
Sacrificial anode 2 and sustained release shell 3 are fixed on sucker rod 4 ' by device 1 ', complete the company of multi-functional tube rod protection device and sucker rod
Connect.
The manufacture method of the multi-functional tube rod protection device of the present invention, for manufacturing multi-functional tube rod protection device, including with
Lower step：1) anode assemblies for two semi-circular shape of being cast using magnalium kirsite；2) cylindrical shape is prepared using stainless steel processing
Sustained release shell；3) sucker rod is prepared, sucker rod can be from market purchasing；4) two anode assemblies and sustained release shell are assembled to sucker rod
And weld：By two anodes to being buckled on sucker rod, two anode assemblies make-ups form sacrificial anode, sustained release shell are wrapped in sacrificial
Domestic animal anode outer wall, and will be polished flat after the gap welding for being sustained shell；5) drying is made used in upper centralizer and lower centralizer
Nylon powder；6) nylon powder is put into injection machine hopper, the good sacrificial anode of assembly welding, sustained release shell and sucker rod is put into
Injection machine mould, it is upper centralizer and lower centralizer that nylon powder, which is heated fusing injection molding, after nylon to be melted solidification,
Upper centralizer and lower centralizer are bonded on sucker rod, and sacrificial anode and sustained release shell are fixed on and taken out by upper centralizer and lower centralizer
On beam hanger, the manufacture of multi-functional tube rod protection device and the connection of multi-functional tube rod protection device and sucker rod are so far completed.
The manufacture method of the multi-functional tube rod protection device of the present invention is hot using the mode of injection by upper centralizer, lower centralizer
Casting is on sucker rod, and formation is integrated, fixation, and during injection, the end of upper centralizer forms the first extension and the first bag
Shroud, the first extension are filled in first annular space, and the first cladding ring is coated on the outer surface of upper of sustained release shell, lower righting
The end of device forms the second extension and the second cladding ring, and the second extension is filled in the second annular space, the second cladding ring
The lower external face of sustained release shell is coated on, by such a mode, upper centralizer, lower centralizer fix sacrificial anode and sustained release shell
On sucker rod, the mode of such a fixed sacrificial anode does not influence the intensity of sucker rod, and upper and lower centralizer is avoided that sucker rod is inclined
Mill, moreover it is possible to protect anode not frayed, when electrochemical reaction occurs, sacrificial anode is first corroded, and protects sucker rod, while instead
Answer thing absorption to form diaphragm on the body of rod of sucker rod and the tube wall of oil pipe, prevent R a T to be corroded, i.e. this hair
The multi-functional tube rod protection decoration that the manufacture method of bright multi-functional tube rod protection device produces can prevent R a T
Eccentric wear and be corroded, and do not influence strength of oil pump rod.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made, it all should fall into the protection domain of claims of the present invention determination.
Claims (3)
- A kind of 1. multi-functional tube rod protection device, it is characterised in that：Including the sacrificial anode formed by two anode assemblies make-ups (2), two anode assemblies are semi-circular shape housing made of magnalium kirsite, and two anode assemblies make-ups are simultaneously fixed on oil pumping The outer wall of bar (4 '), the diameter of the inwall of sacrificial anode (2) is equal with the diameter of sucker rod (4 '), in addition to sustained release shell (3), institute The cylinder that sustained release shell (3) is the stainless steel for having a gap vertically is stated, the sustained release shell (3), which compresses, is wrapped in sacrifice sun The outer wall of pole (2), the internal diameter of the sustained release shell (3) is equal with the external diameter of sacrificial anode (2), the outer surface of the sustained release shell (3) Be evenly arranged with several through holes (31), the both ends of the sacrificial anode (2) be respectively fixedly connected with centralizer (1), under help Positive device (1 '), the upper centralizer (1) and lower centralizer (1 ') is hollow and suit is fixed on the outer wall of sucker rod (4 '), it is described on Centralizer (1) and the radial dimension of lower centralizer (1 ') are less than the radial dimension of oil pipe, and the length of the sustained release shell (3) is more than sacrificial The length of domestic animal anode (2), the outer wall of sucker rod (4 '), the upper surface of sacrificial anode (2), sustained release shell (3) inwall between formed First annular space (5), the outer wall of sucker rod (4 '), the lower surface of sacrificial anode (2), sustained release shell (3) inwall between formed Second annular space (6), the body of the upper centralizer (1) forms the first extension (11) and the first cladding ring (12), described The body of lower centralizer (1 ') forms the second extension (11 ') and the second cladding ring (12 '), and first extension (11) is stretched into The first annular space (5) is simultaneously docked with the upper surface of sacrificial anode (2), and the first cladding ring (12) is coated on sustained release shell (3) outer surface of upper, second extension (11 ') stretch into second annular space (6) and with sacrificial anode (2) End face dock, it is described second cladding ring (12 ') be coated on sustained release shell (3) lower external face, the upper centralizer (1), under help Positive device (1 ') is molded using high-strength nylon, and the body surface of the upper centralizer (1) forms a plurality of first straight muscle (13), The body surface of the lower centralizer (1 ') is formed with a plurality of second straight muscle (13 '), and a plurality of first straight muscle (13) is along above helping The axis of positive device (1) is uniformly distributed, and axis of a plurality of second straight muscle (13 ') along lower centralizer (1 ') is uniformly distributed, the first straight muscle (13) interlock 45 degree of arrangements with the second straight muscle (13 ').
- 2. multi-functional tube rod protection device according to claim 1, it is characterised in that：Two neighboring first straight muscle (13) it Between form first and cross chute (14), second is formed between two neighboring second straight muscle (13 ') and crosses chute (14 ').
- 3. the manufacture method of multi-functional tube rod protection device according to claim 1 or 2, it is characterised in that including following step Suddenly：1) casting anode assemblies；2) processing prepares sustained release shell；3) sucker rod is prepared；4) assembling anode component and sustained release shell to pump Welded on bar and by the gap being sustained on shell；5) drying makes upper centralizer and the nylon powder used in lower centralizer；6) by Buddhist nun Imperial powder puts into injection machine, the good anode assemblies of assembly welding, sustained release shell and sucker rod is put into injection machine, nylon powder is added Injection molding is upper centralizer and lower centralizer after heat fusing, it is to be melted after the solidification of nylon powder after, upper centralizer and under help Positive device is bonded on sucker rod and anode assemblies and sustained release shell is fixed on sucker rod, so far completes multi-functional tube rod protection dress The manufacture and the connection of multi-functional tube rod protection device and sucker rod put.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611085594.6A CN106401501B (en) | 2016-11-30 | 2016-11-30 | Multi-functional tube rod protection device and its manufacture method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611085594.6A CN106401501B (en) | 2016-11-30 | 2016-11-30 | Multi-functional tube rod protection device and its manufacture method |
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| CN106401501A CN106401501A (en) | 2017-02-15 |
| CN106401501B true CN106401501B (en) | 2017-12-26 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109403902B (en) * | 2018-11-15 | 2021-04-30 | 中国石油天然气股份有限公司 | A integrated device that is used for casing to decrease well combined material subsidy |
| CN111827892B (en) * | 2019-04-16 | 2022-08-02 | 中国石油天然气股份有限公司 | Rigid casing centralizer and installation tool and method thereof |
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| CN101760022A (en) * | 2009-11-27 | 2010-06-30 | 平顶山华邦工程塑料有限公司 | Nylon 66 composition for petroleum sucker rod centralizer material |
| CN201554387U (en) * | 2009-11-09 | 2010-08-18 | 毕新忠 | Corrosion-resisting grinding deviation prevention device for oil extraction rod |
| CN103014723A (en) * | 2013-01-10 | 2013-04-03 | 中国石油大学(华东) | Corrosion controller of oil well production equipment and sucker rod employing controller |
| CN104265186A (en) * | 2014-08-13 | 2015-01-07 | 西安石油大学 | Cathode protection device for protecting inner walls of oil pipe and casing pipe and manufacturing method of cathode protection device |
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| US5352383A (en) * | 1991-10-18 | 1994-10-04 | Centrax International Corp. | Corrosion inhibitor and sealable thread protector end cap for tubular goods |
| CN201554387U (en) * | 2009-11-09 | 2010-08-18 | 毕新忠 | Corrosion-resisting grinding deviation prevention device for oil extraction rod |
| CN101760022A (en) * | 2009-11-27 | 2010-06-30 | 平顶山华邦工程塑料有限公司 | Nylon 66 composition for petroleum sucker rod centralizer material |
| CN103014723A (en) * | 2013-01-10 | 2013-04-03 | 中国石油大学(华东) | Corrosion controller of oil well production equipment and sucker rod employing controller |
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| CN106401501A (en) | 2017-02-15 |
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Inventor after: Li Dangsheng Inventor after: Wang Weichen Inventor after: Wang Zhe Inventor after: Wang Wenming Inventor after: Cong Pan Inventor after: Zhou Lei Inventor after: Li Jieke Inventor after: Wang Yong Inventor before: Li Dangsheng Inventor before: Wang Weichen Inventor before: Wang Zhe Inventor before: Wang Wenming Inventor before: Cong Pan Inventor before: Zhou Lei Inventor before: Li Jieke |
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Effective date of registration: 20220208 Address after: 457000 No. 219, nizhuang, Xinzhuang Town, Puyang City, Henan Province Patentee after: Henan qishengwei Industrial Co.,Ltd. Address before: No. 4, unit 21, building 108, Renqiu Road, road, Hualong District, Henan, Puyang Patentee before: Li Dangsheng |