CN1031729C - Permanent-magnet waxproof oil pump - Google Patents
Permanent-magnet waxproof oil pump Download PDFInfo
- Publication number
- CN1031729C CN1031729C CN 91106048 CN91106048A CN1031729C CN 1031729 C CN1031729 C CN 1031729C CN 91106048 CN91106048 CN 91106048 CN 91106048 A CN91106048 A CN 91106048A CN 1031729 C CN1031729 C CN 1031729C
- Authority
- CN
- China
- Prior art keywords
- permanent
- oil
- pump
- fixing sleeves
- magnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000003129 oil well Substances 0.000 claims abstract description 8
- 238000005086 pumping Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 6
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 2
- 239000000696 magnetic material Substances 0.000 claims 2
- 229910052761 rare earth metal Inorganic materials 0.000 claims 2
- 150000002910 rare earth metals Chemical group 0.000 claims 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims 1
- 230000005291 magnetic effect Effects 0.000 abstract description 20
- 239000010779 crude oil Substances 0.000 abstract description 12
- 239000003921 oil Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 10
- 239000012188 paraffin wax Substances 0.000 abstract description 6
- 230000002265 prevention Effects 0.000 abstract 4
- 239000003302 ferromagnetic material Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000001993 wax Substances 0.000 description 18
- 239000002245 particle Substances 0.000 description 6
- 239000013078 crystal Substances 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000002889 diamagnetic material Substances 0.000 description 1
- 230000005307 ferromagnetism Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
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- Soft Magnetic Materials (AREA)
Abstract
The present invention relates to a permanent magnet paraffin prevention oil well pump used for pumping oil in an oil field, which is mainly characterized in that permanent magnets are clamped between an upper inner and an upper outer fixing sleeves, and between a lower inner and a lower outer fixing sleeves. Because the fixing sleeves are made of non-ferromagnetic materials, strong magnetic fields exist in the fixing sleeves, and crude oil can be processed by the magnetic fields when the crude oil passes through the fixing sleeves so that the effect of paraffin prevention is achieved. The present invention has the advantages of simple structure, easy manufacture, leakage prevention, good paraffin prevention effect, etc.
Description
The present invention relates to a kind of pit shaft anti-wax technique that is used for oilfield pumping well, a kind of rod-type permanent-magnet waxproof oil pump promptly is provided.
Pumping well pit shaft wax deposition is the problem that the oil field often occurs, address this problem the measure of generally being taked and be that heat is washed, mechanical paraffin cutting or handle with chemical method, though these measures can reduce the wax deposition phenomenon on certain program, meanwhile also influenced crude output and increased expense.In addition, conventional oil well pump also exists the wastage problem, and this is because cause in the plunger and the gap between the lining of oil well pump.For addressing this problem, Chinese patent CN89219511.8 adopts magnetic field to reduce the gap leaking loss amount, but because permanent magnet is fixed on the plunger of being made by the ferromagnetism carbon steel, though can solve this problem of leakproof, but because magnetic screening action, the plunger internal magnetic field is very weak, does not have the magnetic field treated effect to crude oil, and former Soviet Union's patent 72155 for another example, a kind of pumping well sucker rod pump is provided, be the plunger of a hollow garden column, under the effect of connecting rod, in lining, move, in order to reduce plunger seepage flow on every side, lay series of magnets in the plunger outside, magnet magnetizing direction and axis normal, homopolarity is relative, and fixes with diamagnetic material.Though can reduce seepage flow, not wax control.Though at present many devices being arranged all is the magnetic treatment that is used for convection cell, for example: US4865730, US4761228, US4797225, US4605498 etc., these patents all are unsuitable for the use of oil pump.
The object of the present invention is to provide the magnetic paraffin control oil well pump of a kind of leakproof simultaneously and wax deposition.
The invention provides a kind of permanent-magnet waxproof oil pump that is used for oilfield pumping well, it is made up of pump barrel, lining, plunger, upper and lower valve device and the immobilising device etc. of moving about of fixed cover, between last outer fixing cover and the last internal fixation cover and down outer fixing cover and following internal fixation accompany permanent magnet between overlapping, and it is characterized in that upper and lower, inside and outside fixed cover makes by nonferromagnetic material.
Magnetic field produces above-mentioned two kinds of treatment effects to crude oil and is caused by mangneto colloid effect, the crude oil of oil field oil pumping oil well contains water on distinct program, when crude oil contacts with polarizable medium water, electric charge can be with in its surface, and the effect of magnetic paraffin control is because the charge effect that moves in the convection cell of magnetic field is caused.The charged particle of motion, effect to magnetic field is responsive, for possessing crude oil and the water that forms colloid trend, the brilliant constantly generation of wax is constantly dissolved again, magnetic field treated, just by magnetic field to the wherein effect of charged particle, and positive and negative charging particle movement direction is opposite, the thickness of electric double layer is generally 10
-6～10
-9About m; in the scope of a colloidal particles size; cause the electric charge redistribution; thereby promoted the formation of colloidal particles electric double layer; because the attraction of positive and negative charge; electric double layer can keep relative stability; the wax crystalline substance that electric double layer protection generates is not dissolved, and also has repulsive interaction each other, when through the crude oil of magnetic field treated when oil pipe rises; pressure and temp also descends gradually; the inner disperse of crude oil many little reduced wax crystals that distributing are because the existence of little reduced wax crystal causes the increase of crude oil to wax solubility; temperature is low during to a certain degree; little reduced wax crystal all will be grown up, and the wax crystalline substance has been a macromolecular mass when adsorbing on tube wall; rather than the brilliant molecule of wax; the reduction of energy neither phase-change energy, but the surface energy of colloidal particles, and at this moment the wax that adheres on the tube wall will loosen manyly without magnetic treatment; easily taken away, thereby reach wax control result by oily stream.The present invention is because last internal fixation cover 9, and following internal fixation cover 14 is to be made by Nonferromugnetic material, so its inside has higher magnetic field, crude oil by the time can be subjected to magnetic field treated, thereby reach wax control result as previously described.That the present invention has is simple in structure, be easy to making, leakproof, wax control result.
Narrate reality provided by the present invention below in conjunction with accompanying drawing and drag example---a kind of permanent-magnet waxproof oil pump.
Accompanying drawing 1 is looked sectional view for the master of present embodiment.
Permanent-magnet waxproof oil pump is by pump barrel 1, the joint 3 that lining 2 links to each other with sucker rod, last travelling valve 4, on the valve seat 5 that moves about, upper connection 6, permanent magnet 7, last outer fixing cover 8, last internal fixation cover 9, plunger body 10, following outer fixing cover 11, permanent magnet 12, lower contact 13, following internal fixation cover 14, the limited ring 15 of following travelling valve, downstream valve 16, lower end 17, under move about valve seat 18 form, in wherein going up, in under outer, the outer fixing cover is made by Nonferromugnetic material, and the permanent magnet system that wherein accompanies adopts NdFeB material to make, because last internal fixation cover 9, following internal fixation cover 14 is to be made by Nonferromugnetic material, so its inside has higher magnetic field, crude oil by the time can be subjected to magnetic field treated, thereby reach wax control result as previously described.
Claims (4)
1. permanent-magnet waxproof oil pump that is used for oilfield pumping well, it is made up of pump barrel, lining, plunger, upper and lower valve device and the immobilising device etc. of moving about of fixed cover, between last outer fixing cover and the last internal fixation cover and down outer fixing cover and following internal fixation accompany permanent magnet between overlapping, and it is characterized in that upper and lower, inside and outside fixed cover makes by nonferromagnetic material.
2. according to the described oil well pump of claim 1, it is characterized in that described permanent magnet adopts watt shape.
3. according to claim 1,2 described oil well pumps, it is characterized in that permanent magnet is a rare earth permanent-magnetic material.
4. according to the described oil well pump of claim 3, it is characterized in that rare earth permanent-magnetic material is a neodymium iron boron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106048 CN1031729C (en) | 1991-03-11 | 1991-03-11 | Permanent-magnet waxproof oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106048 CN1031729C (en) | 1991-03-11 | 1991-03-11 | Permanent-magnet waxproof oil pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1064733A CN1064733A (en) | 1992-09-23 |
| CN1031729C true CN1031729C (en) | 1996-05-01 |
Family
ID=4907487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91106048 Expired - Fee Related CN1031729C (en) | 1991-03-11 | 1991-03-11 | Permanent-magnet waxproof oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1031729C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422428B (en) * | 2015-11-17 | 2017-03-15 | 中国石油天然气股份有限公司 | A kind of pipe-type rotary-flow oil well pump |
-
1991
- 1991-03-11 CN CN 91106048 patent/CN1031729C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1064733A (en) | 1992-09-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |