CN204805057U - Turbocharger of deep well oil pump - Google Patents
Turbocharger of deep well oil pump Download PDFInfo
- Publication number
- CN204805057U CN204805057U CN201520278673.3U CN201520278673U CN204805057U CN 204805057 U CN204805057 U CN 204805057U CN 201520278673 U CN201520278673 U CN 201520278673U CN 204805057 U CN204805057 U CN 204805057U
- Authority
- CN
- China
- Prior art keywords
- center tube
- turbine
- housing
- deep
- oil pump
- 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.)
- Withdrawn - After Issue
Links
- 238000012856 packing Methods 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 210000002445 nipple Anatomy 0.000 claims description 11
- 239000003129 oil well Substances 0.000 abstract description 10
- 230000008676 import Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 9
- 238000005086 pumping Methods 0.000 description 9
- 238000013461 design Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 210000000664 rectum Anatomy 0.000 description 3
- 241001023788 Cyttus traversi Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Supercharger (AREA)
Abstract
The utility model relates to a deep well oil pump turbocharger, which consists of an upper joint, a short joint, a shell, an upper central tube, an outer turbine, a sealing packing, an inner turbine, a bearing and a lower joint, wherein the upper joint, the short joint, the shell and the lower joint are sequentially connected by screw threads; the shell is a reducing pipe body, a plurality of through holes are formed in the expanding shoulder, and a plurality of long slits are uniformly distributed in the middle of the large-diameter section of the shell; the shell is sleeved at the upper end of the upper central tube; the lower joint is sleeved at the lower end of the lower central pipe; the lower end of the inner turbine is provided with a bearing, and the bearing is arranged on the lower central pipe; the upper end of the inner turbine is sleeved at the lower end of the upper central tube and is blocked on a sealing groove provided with a sealing packing; the outer turbine is sleeved on the upper central pipe; one-way teeth arranged at the top of the upper end of the inner turbine are meshed with one-way teeth at the lower end of the outer turbine, and the inner turbine blades and the outer turbine blades are opposite to each other. The utility model discloses the booster mainly used is for the import pressure boost of deep well oil-well pump.
Description
Technical field
The utility model relates to the supercharging device improving deep-well oil pump pump efficiency in a kind of oil field development.
Background technique
At present, on stream, more than 95% is that Horse Beam Pumping Unit drives the mode of underground reciprocating conventional pumps oil pumping lifting to pump to oil field at home.Because this oil pumping mode is simple, durable, little investment, so be used widely in oil field at home.But due to which system effectiveness low (about 30%), therefore each oil field in this on waste a large amount of energy.For raising the efficiency, reduce energy consumption, many-sided research and improvement have been carried out in conjunction with the situation in this oily district in each oil field, obtain many-sided energy-saving and cost-reducing effect of raising the efficiency, as: various energy-saving pumping unit, tubing anchor ingot, compensated pump etc. have all been approved and have been obtained extensive use.Oil well pump turbine fluid increasing device technology makes full use of the flexible energy of lifting oil pipe post, without casing anchor ingot or hanging tool, synchronous working with oil well pump, the pressure of deep-well pump inlet liquid is increased by turbine, effective quickening standing valve is opened and feed liquor speed, thus add the filling index of pump, improve pump efficiency.This device is that the mode of conventional pumps oil pumping lifting is anotherly raised the efficiency, and reduces the new technology of energy consumption.
Model utility content
For the defect that above-mentioned prior art exists, the technical problems to be solved in the utility model is to provide a kind of deep-well oil pump turbosupercharger, and the Energy Efficient that Appropriate application lifting oil pipe post stretches increases the filling index of deep-well oil pump.
For solving the problems of the technologies described above, the utility model deep-well oil pump turbosupercharger, be made up of upper connection 1, pipe nipple 2, housing 3, upper center tube 4, outer turbine 5, sealed packing 6, interior turbine 7, bearing 8, lower center tube 9 and lower contact 10, above-mentioned upper connection 1, pipe nipple 2, housing 3 and lower contact 10 are threaded successively; Above-mentioned housing 3 is reducing body, and housing 3 Large Diameter Pipeline section is near lower contact 10, housing 3 expanding shoulder place is provided with multiple oblique through hole passing into housing 3 Large Diameter Pipeline section inner chamber, in the middle part of housing 3 Large Diameter Pipeline section along the circumferential direction uniform many communicate with inside and to the slit of axioversion; Described housing 3 top is sleeved on upper center tube 4 upper end; The expanding end sleeve in described lower contact 10 upper end is contained in lower center tube 9 lower end; Arrange bearing 8 in described interior turbine 7 lower end, this bearing 8 is arranged on expanding end, lower center tube 9 upper end; Described interior turbine 7 upper end is enclosed within upper center tube 4 lower end, and the seal groove part that gear is being equipped with sealed packing 6 forms sealing, interior turbine 7 and upper center tube 4 Spielpassung; Described outer turbine 5 is enclosed within upper center tube 4, and with upper center tube 4 Spielpassung; Top place, described interior turbine 7 upper end is provided with unidirectional teeth and is engaged mutually with the unidirectional teeth in outer turbine 5 lower end, described interior turbine 7 blade and outer turbine 5 blade mutually reverse.
As further improvement of the utility model, above-mentioned housing 3 Large Diameter Pipeline section top along the circumferential direction uniform many to communicate with inside and to the short seam of axioversion.
Above-mentioned upper connection 1 two ends all arrange pipe internal thread.
Above-mentioned lower contact 10 end arranges pipe outside thread.
The utility model provides a kind of deep-well oil pump turbosupercharger, the lower contact comprising housing, the upper connection be connected with housing upper and be connected with lower housing portion, housing is provided with multiple through hole passing into housing cavity, and deep-well oil pump turbosupercharger also comprises:
Upper center tube, is arranged on the inside of housing upper and is connected with upper connection; Lower center tube, is arranged on the inside of lower housing portion and is connected with lower contact; Interior turbine, is arranged between upper center tube and lower center tube, and interior turbine is communicated with upper center tube and lower center tube; Outer turbine, is set in the outside of upper center tube, and between upper center tube and housing; Wherein, top place, interior turbine upper end is provided with unidirectional teeth and is engaged mutually with the unidirectional teeth of outer turbine lower end, interior turbine blade and outer turbine blade mutually reverse.
Further, the upper end of interior turbine is sleeved on the lower end of upper center tube, and the upper end of interior turbine and the lower end of upper center tube are sealed and matched, interior turbine and upper center tube Spielpassung.
Further, between the upper end of interior turbine and the lower end of upper center tube, sealed packing is installed.
Further, the upper end of lower center tube is provided with expanding end, is provided with bearing between the lower end of interior turbine and the expanding end of the upper end of lower center tube.
Further, outer turbine and upper center tube Spielpassung.
Further, be provided with pipe nipple between housing upper and upper connection, pipe nipple is communicated with upper connection and upper center tube.
Compared with present technological scheme, adopt the utility model oil well pump turbosupercharger, in oil field development, on conventional oil well pump lifting tubing string, the utility model is installed at next root oil pipe liquid entering hole place of pump, when the oil pipe extension that lifting tubing string operationally causes because of upper and lower load alternation, utilize the energy of oil pipe extension to rotate to impact outer turbine, also rotate under the drive of interior turbine turbine outside simultaneously, the longer turbine of oil pipe extension amount rotate sooner, longer.Because the utility model devises unidirectional teeth (inside and outside turbine occlusion) when oil pipe contracting, your interior turbine rotating boosting when will out of the standing valve of pump, when oil pipe extends interior turbine (only with feed liquor rotation) rotate not supercharging.So the supercharging when oil well pump feed liquor of the utility model turbosupercharger.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The Figure of description forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the utility model oil well pump turbosupercharger.
Embodiment
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
The utility model scheme is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the utility model embodiment, technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the embodiment of the utility model part, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the utility model protection.
As shown in Figure 1, the utility model deep-well oil pump turbosupercharger is made up of upper connection 1, pipe nipple 2, housing 3, upper center tube 4, outer turbine 5, sealed packing 6, interior turbine 7, bearing 8, lower center tube 9, lower contact 10, reach the filling index adding pump, improve pump efficiency effect.
Inside, above-mentioned upper connection 1 two ends is standard oil pipe box (being also box cupling), upper end is that connected pipes designs, lower end connecting short section 2, pipe nipple 2 two ends are standard oil pipe pin thread, the upper end of body contact body 3 upper end, lower end, inside, housing upper end is standard oil pipe box, and lower end is regular screw threads screwed connection upper center tube 4, outside, housing 3 upper end on the lower point (box cupling half place) is expanding, and expanding shoulder place is provided with multiple through hole to axioversion, housing 3 upper end outside expanding on the lower a segment distance place be provided with many with inner communicate and to the short seam of axioversion, Duan Feng end is the light pipe of a segment distance, after light pipe crosses a segment distance (in the middle part of shell) be provided with again many communicate with inside and to the slit of axioversion, it is one section of light pipe after slit terminates, light pipe inside, housing 3 lower end is the outside regular screw threads screwed connection in regular screw threads screw thread and lower contact 10 upper end, upper center tube 4 internal diameter is the latus rectum that same pipe aperture is identical, external diameter upper end is that regular screw threads screw thread is connected with housing 3, lower end establishes twice to fill the seal groove of sealed packing, lower contact 10 lower end is outside is connected pipes and the standard oil pipe pin thread that designs, internal diameter is the latus rectum that same pipe aperture is identical, lower contact 10 lower end is one section of blank tubing after upwards having crossed oil pipe pin thread, be one expanding after blank tubing, expanding end and lower contact 10 upper end external diameter are provided with regular screw threads screw thread and are connected with housing 3 lower end, internal diameter is provided with that regular screw threads screw thread connects with lower center tube 9 lower end, lower center tube 9 internal diameter is the latus rectum that same pipe aperture is identical, external diameter upper end is provided with one expanding, be provided with in expanding upper end portion and 8, bearing be installed, interior turbine 7 lower end internal installation shaft hold 8 and seat at lower center tube 9 upper shaft bearing place, interior turbine 7 upper-end inner diameter is that same upper center tube 4 lower end crest clearance coordinates and is enclosed within the seal groove that blocks twice packing outside upper center tube 4 lower end and sealed packing 6 and formed and seal, top place, interior turbine 7 upper end is provided with that unidirectional teeth are engaged mutually with the unidirectional teeth in outer turbine 5 lower end, outer turbine 5 internal diameter is that same upper center tube 4 crest clearance coordinates and is enclosed within upper center tube 4.
When oil well adopts conventional deep-well oil pump artificial lifting way to pump, when lower completion lifting tubing string, the utility model pressurized machine is connected under conventional pumps under first oil pipe, other downhole tools, oil pipe are constant, by former design G.I.H completion.When ground pumping unit works, horse head drives sucker rod (lower end connection pump plunger) in well to do upper and lower suction action.The now oil pipe extension that causes when the upper and lower load alternation of sucker rod (sucker rod and oil pipe) of lifting tubing string lower end, when the lower end contracting of lifting tubing string, tubing string drives deep well oil pump supercharger upwards to carry together (above putting forward distance for 0.04% of whole time lift tube column length).Because pressurized machine shell is provided with expanding when the utility model pressurized machine is upwards carried, now between oil jacket, squeezed rear broken the making of liquid enters in pressurized machine shell from the through hole of the expanding shoulder of pressurized machine shell, the short straight joint in expanding many, the outer top of shell, is entered between oil jacket after the outer turbine of liquid Direct driver under inertia and Action of Gravity Field entered in pressurized machine shell rotates by many slits in the expanding outer bottom of shell.In being driven by unidirectional tooth when outer turbine rotates, turbine rotates, and the blade due to inside and outside turbine be oppositely, so turbine rotation is upwards extract, i.e. pressurization now.
At oil field mouthful oil well when under operation during completion tubular column, whole time lifting tubing string connects this model utility and by entering order under design is: extremely stifled+oil pipe+four meters long screen casings+two oil pipes+this model utility oil well pump turbosupercharger+oil pipe+conventional whole cylinder pump+many, the oil pipe of oil pipe is to connecing well head oil pipe hanger from bottom to up.Seat wellhead tree tree, descends corresponding rod string after pressure testing is qualified again.Drive pumping unit after every work before taking out of opening completes to produce.When in pumping unit horsehead drive well, sucker rod+pump plunger upwards starts to aspirate (travelling valve closedown), also be now the process that whole time sucker rod and whole time lifting oil pipe load exchange, both whole time lifting oil pipe (fluid column) load passed on whole rod string, after whole time lifting oil pipe (fluid column) load is laid down, tail end nature under the elastic reaction of material own of whole time lifting oil pipe shrinks to uphole end (fixed end), and shrinking length is 0.04% of whole time lifting tubing string, this model utility deep-well oil pump turbosupercharger because of under connecing pump, so together move upward with oil pipe, when oil pipe drive upper connection 1 add pipe nipple 2 connect turbosupercharger shell 3 move upward time, liquid between oil jacket extruded because point (box cupling half place) is expanding on the lower outside, turbosupercharger shell 3 upper end and stops, broken make liquid between oil jacket from expanding shoulder be provided with multiple through hole to axioversion and housing 3 upper end outside expanding on the lower a segment distance place be provided with many with inner communicate and short seam to axioversion flow into, the liquid effects flowed into is outside on turbine 5, after strong broken outer turbine 5 rotates on upper center tube 4 by have in the middle part of shell 3 many with inner communicate and slit to axioversion flow out, be provided with unidirectional teeth with top place, interior turbine 7 upper end be engaged mutually because outer turbine 5 lower end be provided with unidirectional teeth, beyond institute turbine 5 rotate and also drive in turbine 7 rotate, interior turbine 7 to be enclosed within upper center tube 4 and to have O-ring seal 6 to seal, because the turbine blade rotation direction of outer turbine 5 and interior turbine 7 is contrary, so turbine 7 is upwards (pumping hole) spinning liquid superchargings now, interior turbine 7 be seat on the bearing 8 of lower center tube 9 upper end, are medial axis with upper center tube 4 lower center tube 9, lower center tube 9 lower end is connected with lower contact 10 internal diameter by common screw thread, and the lower end of lower contact 10 connects with feed liquor oil pipe.This well improves more than 10% pump efficiency by Liquid output after the utility model turbosupercharger is installed at next root oil pipe place of pump.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a deep-well oil pump turbosupercharger, be made up of upper connection (1), pipe nipple (2), housing (3), upper center tube (4), outer turbine (5), sealed packing (6), interior turbine (7), bearing (8), lower center tube (9) and lower contact (10), it is characterized in that, described upper connection (1), pipe nipple (2), housing (3) and lower contact (10) are threaded successively; Described housing (3) is reducing body, and housing (3) Large Diameter Pipeline section is near lower contact (10), housing (3) expanding shoulder place is provided with multiple oblique through hole passing into housing (3) Large Diameter Pipeline section inner chamber, in the middle part of housing (3) Large Diameter Pipeline section along the circumferential direction uniform many communicate with inside and to the slit of axioversion; Described housing (3) top is sleeved on upper center tube (4) upper end; The expanding end sleeve in described lower contact (10) upper end is contained in lower center tube (9) lower end; Arrange bearing (8) in described interior turbine (7) lower end, this bearing (8) is arranged on expanding end, lower center tube (9) upper end; Described interior turbine (7) upper end is enclosed within upper center tube (4) lower end, and the seal groove part that gear is being equipped with sealed packing (6) forms sealing, interior turbine (7) and upper center tube (4) Spielpassung; Described outer turbine (5) is enclosed within upper center tube (4), and with upper center tube (4) Spielpassung; Described interior turbine (7) top, upper end place is provided with unidirectional teeth and is engaged mutually with the unidirectional teeth in outer turbine (5) lower end, described interior turbine (7) blade and outer turbine (5) blade mutually reverse.
2. deep-well oil pump turbosupercharger according to claim 1, is characterized in that, described housing (3) Large Diameter Pipeline section top along the circumferential direction uniform many to communicate with inside and to the short seam of axioversion.
3. deep-well oil pump turbosupercharger according to claim 1, is characterized in that, described upper connection (1) two ends all arrange pipe internal thread.
4. deep-well oil pump turbosupercharger according to claim 1, is characterized in that, described lower contact (10) end arranges pipe outside thread.
5. a deep-well oil pump turbosupercharger, the lower contact (10) comprising housing (3), the upper connection (1) be connected with described housing (3) top and be connected with described housing (3) bottom, described housing (3) is provided with multiple through hole passing into housing (3) inner chamber, it is characterized in that, described deep-well oil pump turbosupercharger also comprises:
Upper center tube (4), is arranged on the inside on described housing (3) top and is connected with described upper connection (1);
Lower center tube (9), is arranged on the inside of described housing (3) bottom and is connected with described lower contact (10);
Interior turbine (7), is arranged between described upper center tube (4) and described lower center tube (9), and described interior turbine (7) is communicated with described upper center tube (4) and described lower center tube (9);
Outer turbine (5), is set in the outside of described upper center tube (4), and is positioned between described upper center tube (4) and described housing (3);
Wherein, described interior turbine (7) top, upper end place is provided with unidirectional teeth and is engaged mutually with the unidirectional teeth of outer turbine (5) lower end, described interior turbine (7) blade and outer turbine (5) blade mutually reverse.
6. deep-well oil pump turbosupercharger according to claim 5, it is characterized in that, the upper end of described interior turbine (7) is sleeved on the lower end of described upper center tube (4), and the upper end of described interior turbine (7) and the lower end of described upper center tube (4) are sealed and matched, described interior turbine (7) and described upper center tube (4) Spielpassung.
7. deep-well oil pump turbosupercharger according to claim 6, is characterized in that, is provided with sealed packing (6) between the upper end of described interior turbine (7) and the lower end of described upper center tube (4).
8. deep-well oil pump turbosupercharger according to claim 6, it is characterized in that, the upper end of described lower center tube (9) is provided with expanding end, is provided with bearing (8) between the expanding end of the lower end of described interior turbine (7) and the upper end of lower center tube (9).
9. deep-well oil pump turbosupercharger according to claim 5, is characterized in that, described outer turbine (5) and described upper center tube (4) Spielpassung.
10. deep-well oil pump turbosupercharger according to claim 5, it is characterized in that, be provided with pipe nipple (2) between described housing (3) top and described upper connection (1), described pipe nipple (2) is communicated with described upper connection (1) and described upper center tube (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520278673.3U CN204805057U (en) | 2014-05-14 | 2015-05-01 | Turbocharger of deep well oil pump |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2014202467201 | 2014-05-14 | ||
| CN201420246720 | 2014-05-14 | ||
| CN201520278673.3U CN204805057U (en) | 2014-05-14 | 2015-05-01 | Turbocharger of deep well oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204805057U true CN204805057U (en) | 2015-11-25 |
Family
ID=54589892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520278673.3U Withdrawn - After Issue CN204805057U (en) | 2014-05-14 | 2015-05-01 | Turbocharger of deep well oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204805057U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089966A (en) * | 2014-05-14 | 2015-11-25 | 中国石油天然气股份有限公司 | Turbocharger of deep well oil pump |
-
2015
- 2015-05-01 CN CN201520278673.3U patent/CN204805057U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089966A (en) * | 2014-05-14 | 2015-11-25 | 中国石油天然气股份有限公司 | Turbocharger of deep well oil pump |
| CN105089966B (en) * | 2014-05-14 | 2017-07-14 | 中国石油天然气股份有限公司 | Turbocharger of deep well oil pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205036334U (en) | Down -hole junk fishing barrel | |
| CN204805057U (en) | Turbocharger of deep well oil pump | |
| CN207332798U (en) | A kind of casing swage lifting type pressure release discharge device | |
| CN105089966A (en) | Turbocharger of deep well oil pump | |
| CN201225114Y (en) | Downhole hydraulic self-sealing flexible plunger seal oil conduit type well head seal device | |
| RU84461U1 (en) | INSTALLATION FOR SIMULTANEOUSLY SEPARATED PRODUCTION AND PUMPING THROUGH ONE WELL | |
| CN203879716U (en) | Submersible motor plunger type diaphragm pump | |
| RU74163U1 (en) | Borehole PUMPING PLANT FOR SIMULTANEOUS-SEPARATE OIL PRODUCTION | |
| CN213331032U (en) | Balanced liquid extracting device for spiral pump in horizontal well pipe | |
| CN205955955U (en) | Two -stage combination oil -well pump | |
| CN213743963U (en) | Oil-well pump device for oil and gas exploitation | |
| CN209875142U (en) | Oil-water separation system under pumping and production-injection integrated pump well | |
| CN204041041U (en) | Oil well liquid increasing device | |
| CN209494553U (en) | A kind of borehole fluid lifting device | |
| CN2344541Y (en) | Double-pipe hydraulic power oil extraction device | |
| CN205172529U (en) | Can lubricate abrasionproof oil jack | |
| CN202659218U (en) | Oil lubrication oil-pumping device | |
| CN206681957U (en) | Three plunger mining pumps | |
| CN201794557U (en) | Ultrasonic atomization drainer for gas well | |
| CN201218074Y (en) | Sealing polished rod type shaft mouth sealing device for down-hole hydraulic self-sealing packing kit | |
| CN104747139B (en) | Hydraulic drive type oil extraction system | |
| CN201027649Y (en) | Layered oil production screw pump | |
| CN201013308Y (en) | Sand-proof oil drain valve | |
| CN205936538U (en) | Negative pressure oil production pipe column of oil pumping motor-pumped well | |
| CN205172464U (en) | Oil pipe post is taken out to self -lubricating sucker rod abrasionproof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151125 Effective date of abandoning: 20170714 |