CN205640239U - Oil well single tube through ball oil collecting system - Google Patents
Oil well single tube through ball oil collecting system Download PDFInfo
- Publication number
- CN205640239U CN205640239U CN201620383188.7U CN201620383188U CN205640239U CN 205640239 U CN205640239 U CN 205640239U CN 201620383188 U CN201620383188 U CN 201620383188U CN 205640239 U CN205640239 U CN 205640239U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- oil
- valve
- line
- bypass
- 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.)
- Active
Links
- 239000003129 oil well Substances 0.000 title claims abstract description 17
- 239000003921 oil Substances 0.000 claims abstract description 90
- 239000010779 crude oil Substances 0.000 claims abstract description 76
- 238000004140 cleaning Methods 0.000 claims abstract description 18
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000011152 fibreglass Substances 0.000 abstract description 2
- 230000032258 transport Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Pipeline Systems (AREA)
Abstract
The utility model discloses an oil well single tube leads to ball oil collecting system belongs to the oil production equipment field. This oil collecting system includes: the oil separator comprises a crude oil input pipeline, a first shunt pipeline, a main oil collecting pipeline, a second shunt pipeline and a crude oil output pipeline which are sequentially communicated. The first shunt pipeline comprises a ball serving barrel pipeline and a first bypass oil collecting pipeline which are connected in parallel, and a ball serving barrel is arranged on the ball serving barrel pipeline. The second shunt pipeline comprises a ball collecting barrel pipeline and a second bypass oil collecting pipeline which are connected in parallel, and a ball collecting barrel is arranged on the ball collecting barrel pipeline. The main oil collecting pipeline is a glass fiber reinforced plastic pipeline. When the oil is normally transported, the crude oil input pipeline, the first bypass oil collecting pipeline, the main oil collecting pipeline, the second bypass oil collecting pipeline and the crude oil output pipeline are communicated in sequence to form an oil transporting pipeline. When the main oil collecting pipeline is cleaned, the crude oil input pipeline, the ball sending cylinder pipeline, the main oil collecting pipeline, the ball receiving cylinder pipeline and the crude oil output pipeline are communicated in sequence to form a cleaning pipeline. The oil collecting system has wide application range and can save heat energy.
Description
Technical field
This utility model relates to oil production equipment field, leads to ball oil collecting system particularly to a kind of oil well single tube.
Background technology
In oil extraction process of oil well, in order to the crude oil collected is carried out concentrated processing or turnover, need oil field
The crude oil collected in individual well transports and collects, in order to processing further and utilization of crude oil.But it is oily
Often containing associated gas in the crude oil of field individual well extraction, and viscosity is relatively big, is transported by common oil pipeline
Time, easily occur that crude oil condenses or sticks to the first-class problem of oil pipeline inwall.It is suitable for therefore it provides a kind of
Oil collecting system in oil field individual well Crude Oil Transportation is highly important.
Prior art provides a kind of triple-pipe heat tracing oil collecting system, and this oil collecting system includes: oil collecting pipe, hot water
Pipe and return pipe.Wherein, hot-water line is separately provided, and oil collecting pipe is bundled together by heat-insulation layer with return pipe.
By hot-water line, hot water is delivered to return piping through metering room, then by the heat of hot water in return piping
Oil collecting pipe is heated, thus prevents condensation or the adhesion of oil collecting pipe Crude Oil, it is ensured that the conveying of crude oil.
Designer finds that prior art at least exists techniques below problem:
The triple-pipe heat tracing oil collecting system that prior art provides, floor space is relatively big, and in delivery, oil-collecting
During pipe and return pipe heat exchange, heat-energy losses is relatively big, causes the waste of the energy.
Utility model content
This utility model embodiment technical problem to be solved is, it is provided that a kind of floor space is little, joint
The about energy and oil well single tube with low cost leads to ball oil collecting system, and concrete technical scheme is as follows:
This utility model embodiment provides a kind of oil well single tube and leads to ball oil collecting system, and this oil collecting system includes:
The crude oil intake pipeline that sequentially connects, the first bypass line, main gathering line, the second bypass line, crude oil
Export pipeline.
Described first bypass line includes service bobbin line and the first bypass gathering line being connected in parallel, described
It is provided with service cylinder on service bobbin line；Described second bypass line include the ball collecting chamber pipeline that is connected in parallel and
Second bypass gathering line, described ball collecting chamber pipeline is provided with ball collecting chamber；Described main gathering line is glass
Steel pipeline.
When normal oil transportation, described crude oil intake pipeline, described first bypass gathering line, described main oil-collecting
Pipeline, described second bypass gathering line, described crude oil export pipeline sequentially connect, and form pipeline road.
When cleaning described main gathering line, described crude oil intake pipeline, described service bobbin line, described master
Gathering line, described ball collecting chamber pipeline, described crude oil export pipeline sequentially connect, and form cleaning channels.
Specifically, as preferably, described oil collecting system also include the first valve, the second valve, the 3rd valve,
4th valve, the 5th valve, the 6th valve.Described first valve is arranged on described crude oil intake pipeline,
Described second valve is arranged on the service bobbin line of described service cylinder upstream, and described 3rd valve is arranged
On the service bobbin line being positioned at described service cylinder downstream, described 4th valve is arranged in described ball collecting chamber
On the ball collecting chamber pipeline of upstream, described 5th valve is arranged in the ball collecting chamber pipeline in described ball collecting chamber downstream
On, described 6th valve is arranged on described crude oil export pipeline.
Specifically, as preferably, described oil collecting system also includes being arranged on described first bypass gathering line
The first bypass valve, and be arranged on described second bypass gathering line on the second bypass valve.
Specifically, as preferably, described oil collecting system also include the first Pressure gauge, the first thermometer, second
Pressure gauge, the second thermometer；Described first Pressure gauge and described first thermometer are arranged at described first valve
On the described crude oil intake pipeline of passage downstream, described second Pressure gauge and described second thermometer are arranged at institute
State on the described crude oil export pipeline of the 6th valve downstream.
Specifically, as preferably, a length of 0.5-1.5km of described main gathering line.
Specifically, as preferably, the internal diameter of described main gathering line is 55-65mm.
The technical scheme that this utility model embodiment provides has the benefit that
The oil well single tube that this utility model embodiment provides leads to ball oil collecting system, when normal oil transportation, by defeated
Oil pipe line carries out conveying and the collection of crude oil.When main gathering line is cleaned by needs, crude oil is made to enter
Cleaning channels, launches and receives spherical pig by service cylinder therein and ball collecting chamber, and it is clear to make crude oil promote
Pipe ball is regularly to clean main gathering line, it is ensured that the cleaning in main gathering line, to be cleaned after i.e.
Transport and the collection process that can make crude oil keep smooth and easy.Additionally, by main gathering line is set as fiberglass
Pipeline, to reduce the frictional resistance during carried of crude oil and wax deposition coefficient, make this main gathering line without
In the case of external heat source, it is possible to be applicable to transport and the collection of the moderate viscous crude that concentration is 400-1000Pa s,
It is prevented effectively from the condensation in main gathering line of the moderate viscous crude and adhesion.Visible, this utility model embodiment carries
The oil well single tube of confession leads to ball oil collecting system, simple in construction, and floor space is little, applied widely, and can save
Heat energy, cheap for manufacturing cost, easy to use, it is simple to large-scale promotion is applied.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in this utility model embodiment, embodiment will be described below
The accompanying drawing used required in is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of utility model, for those of ordinary skill in the art, are not paying creative work
On the premise of, it is also possible to other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the structural representation that the oil well single tube that this utility model embodiment provides leads to ball oil collecting system.
Reference represents respectively:
1 crude oil intake pipeline,
101 first valves,
2 first bypass line,
201 service bobbin lines,
2011 service cylinders,
2012 second valves,
2013 the 3rd valves,
202 first bypass gathering lines,
2021 first bypass valves,
3 main gathering lines,
4 second bypass line,
401 ball collecting chamber pipelines,
4011 ball collecting chambers,
4012 the 4th valves,
4013 the 5th valves,
402 second bypass gathering lines,
4021 second bypass valves,
5 crude oil export pipelines,
501 the 6th valves,
6 first Pressure gauges,
7 first thermometeies,
8 second Pressure gauges,
9 second thermometeies,
10 production wellheads,
11 oil-collecting headers.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearer, below will be to this utility model
Embodiment is described in further detail.
As shown in Figure 1, this utility model embodiment provides a kind of oil well single tube and leads to ball oil collecting system, should
Oil collecting system includes: crude oil intake pipeline the 1, first bypass line 2 of sequentially connecting, main gathering line 3,
Second bypass line 4, crude oil export pipeline 5.
Wherein, the first bypass line 2 includes service bobbin line 201 and the first bypass oil collecting pipe being connected in parallel
Line 202, service bobbin line 201 is provided with service cylinder 2011；Second bypass line 4 includes being connected in parallel
Ball collecting chamber pipeline 401 and the second bypass gathering line 402, ball collecting chamber pipeline 401 is provided with ball collecting chamber
4011；Main gathering line 3 is glass steel pipeline.
When normal oil transportation, crude oil intake pipeline 1, first bypass gathering line 202, main gathering line 3,
Second bypass gathering line 402, crude oil export pipeline 5 sequentially connect, and form pipeline road.
When clean main gathering line 3 time, crude oil intake pipeline 1, service bobbin line 201, main gathering line 3,
Ball collecting chamber pipeline 401, crude oil export pipeline 5 sequentially connect, and form cleaning channels.
The oil well single tube that this utility model embodiment provides leads to ball oil collecting system, when normal oil transportation, by defeated
Oil pipe line carries out conveying and the collection of crude oil.When main gathering line 3 is cleaned by needs, crude oil is made to enter
Enter cleaning channels, launch and receive spherical pig by service cylinder 2011 therein and ball collecting chamber 4011, and
Crude oil is made to promote spherical pig so that main gathering line 3 regularly to be cleaned, it is ensured that in main gathering line 3
Cleaning, to be cleaned after the transport of crude oil and collection process can be made to keep smooth and easy.Additionally, by by main oil-collecting
Pipeline 3 is set as glass steel pipeline, to reduce the frictional resistance during carried of crude oil and wax deposition coefficient, makes
This main gathering line 3 is in the case of without external heat source, it is possible to being applicable to concentration is 400-1000Pa s's
The transport of moderate viscous crude and collection, be prevented effectively from the condensation in main gathering line 3 of the moderate viscous crude and adhesion.
Visible, the oil well single tube that this utility model embodiment provides leads to ball oil collecting system, simple in construction, floor space
Little, applied widely, and can saving heat energy, cheap for manufacturing cost, easy to use, it is simple to large-scale promotion
Application.
Specifically, when carrying out carried of crude oil, crude oil intake pipeline 1 is connected with production wellhead 10, and crude oil is defeated
Go out pipeline 5 to be connected with oil-collecting header 11, to complete crude oil from producing well to the transport of oil-collecting header 11,
After through oil-collecting header 11 by Crude Oil Transportation to the most predetermined processing or turnover place.And for the ease of domination set
The trend of oil system Crude Oil, the oil well single tube that this utility model embodiment provides leads to ball oil collecting system and also includes
First valve the 101, second valve the 2012, the 3rd valve the 2013, the 4th valve the 4012, the 5th valve 4013,
6th valve 501, and the first bypass valve 2021 and the second bypass valve 4021, thus to oil collecting system whether
Oil transportation or cleaning is needed to be controlled.
Specifically, the first valve 101 is arranged on crude oil intake pipeline 1.When first valve 101 is opened,
Crude oil flows into the pipeline in the first valve 101 downstream from production wellhead 10, and oil collecting system carries out normal oil transportation or right
Main gathering line 3 is cleaned.When first valve 101 is closed, crude oil cannot flow into the first valve 101 times
Other pipelines of trip, it is simple to operator are to the first bypass line 2, main gathering line the 3, second bypass line
4 etc. overhaul and safeguard.Meanwhile, switched the difference of degree by the first valve 101, can be defeated to crude oil
The oil flow entered in pipeline 1 and downstream line thereof suitably regulates.Specifically, the 6th valve 501 sets
Put on crude oil export pipeline 5, can be to crude oil the need of entering oil-collecting header 11 by the 6th valve 501
And the amount entering oil-collecting header 11 is adjusted, the oil transportation process making oil collecting system is more flexible.
Second valve 2012 is arranged on the service bobbin line 201 of service cylinder 2011 upstream, the 3rd valve
Door 2013 is arranged on the service bobbin line 201 in service cylinder 2011 downstream, and the 4th valve 4012 is arranged
On the ball collecting chamber pipeline 401 being positioned at ball collecting chamber 4011 upstream, the 5th valve 4013 is arranged in receiving ball
On the ball collecting chamber pipeline 401 in cylinder 4011 downstreams.Meanwhile, the first bypass valve 2021 is arranged on the first bypass collection
On oil pipeline 202, the second bypass valve 4021 is arranged on the second bypass gathering line 402.Above-mentioned valve and
Bypass valve with the use of, be controlled with the trend to oil collecting system Crude Oil.When the second valve 2012,
Three valve the 2013, the 4th valve the 4012, the 5th valves 4013 are turned off, and the first bypass valve 2021 and
When two bypass valves 4021 are all opened, i.e. pipeline road is in unimpeded state, and cleaning channels is off,
Crude oil is transported by pipeline road.After oil collecting system carries out the normal oil transportation of 7-15 days, main gathering line
Some crude oil concretion or impurity can be remained, at this time, it may be necessary to main gathering line 3 is cleaned in 3.To master
When gathering line 3 is cleaned, open the second valve the 2012, the 3rd valve the 2013, the 4th valve 4012,
5th valve 4013, and close the first bypass valve 2021 and the second bypass valve 4021, make cleaning channels be in
Unimpeded state, and pipeline road is off.Then, launch spherical pig by service cylinder 2011, this
Time cleaning channels in crude oil from crude oil intake pipeline 1 flow into service bobbin line 201, spherical pig pushing away at crude oil
Through main gathering line 3 under Dong, and main gathering line 3 is cleaned.Can by above-mentioned valve and bypass valve
Easily pipeline road and cleaning channels to be switched over, complete the cleaning of main gathering line 3 in time, from
And ensure the transport of crude oil.
Specifically, above-mentioned valve and bypass valve are the steel gate valve of the pressure of resistance to 2.5MPa so that each valve and
Bypass valve can bear pressure during carried of crude oil, it is ensured that the safety of crude oil, fast transportation.
Specifically, service cylinder 2011 is the cleaning pipeline service cylinder 2011 of the pressure of resistance to 2.5MPa, ball collecting chamber 4011
Cleaning pipeline ball collecting chamber 4011 for the pressure of resistance to 2.5MPa.Service cylinder 2011 and ball collecting chamber 4011 mainly include
The parts such as blind plate, cylinder, reduced pipe, saddle support.During service, open the fast opening blind of service cylinder 2011,
Making spherical pig enter main gathering line 3, then under the promotion of crude oil, main gathering line 3 is cleared up on spherical pig limit
Tube wall limit travel forward.When receiving ball, open the fast opening blind on ball collecting chamber 4011, take out spherical pig, and
The dirt cleaned out in main gathering line 3 is collected.
Specifically, in order to the operating pressure in oil collecting system and running temperature are monitored, this utility model
The oil well single tube that embodiment provides leads to ball oil collecting system and also includes first Pressure gauge the 6, first thermometer 7, second
Pressure gauge the 8, second thermometer 9.First Pressure gauge 6 and the first thermometer 7 are arranged at the first valve 101
On the crude oil intake pipeline 1 in downstream, the second Pressure gauge 8 and the second thermometer 9 are arranged at the 6th valve 501
On the crude oil export pipeline 5 of upstream, to obtain the pressure and temperature in oil collecting system, make in oil collecting system
Pressure is maintained at 2.2-2.8Mpa, and temperature is maintained at 20 DEG C-50 DEG C, thus ensures the properly functioning of oil collecting system.
When occurring the problems such as blocking or seepage in oil collecting system, operator can be counted by Pressure gauge and temperature
According to change understand in time the produced problem in oil collecting system and Position Approximate, and take to keep in repair accordingly to arrange
Execute, thus ensure the safety of oil collecting system.
Specifically, the oil well single tube that this utility model embodiment provides leads to the main gathering line 3 in ball oil collecting system
A length of 0.5-1.5km, internal diameter is 55-65mm.It is that concentration is due to what this oil collecting system was transported
The moderate viscous crude of 400-1000Pa s, if the length of main gathering line 3 is long, internal diameter is excessive or too small,
Easily cause main gathering line 3 and clean difficulty, affect the oil transportation effect of main gathering line 3.Therefore, main collection
Oil pipeline 3 should select suitable length and internal diameter, to ensure oil transportation effect.
The foregoing is only preferred embodiment of the present utility model, not in order to limit protection of the present utility model
Scope, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement made
Deng, within should be included in protection domain of the present utility model.
Claims (6)
1. an oil well single tube leads to ball oil collecting system, it is characterised in that described oil collecting system includes: sequentially connect
Logical crude oil intake pipeline, the first bypass line, main gathering line, the second bypass line, crude oil outlet tube
Line；
Described first bypass line includes service bobbin line and the first bypass gathering line being connected in parallel, described
It is provided with service cylinder on service bobbin line；
Described second bypass line includes ball collecting chamber pipeline and the second bypass gathering line being connected in parallel, described
It is provided with ball collecting chamber on ball collecting chamber pipeline；
Described main gathering line is glass steel pipeline；
When normal oil transportation, described crude oil intake pipeline, described first bypass gathering line, described main oil-collecting
Pipeline, described second bypass gathering line, described crude oil export pipeline sequentially connect, and form pipeline road；
When cleaning described main gathering line, described crude oil intake pipeline, described service bobbin line, described master
Gathering line, described ball collecting chamber pipeline, described crude oil export pipeline sequentially connect, and form cleaning channels.
Oil collecting system the most according to claim 1, it is characterised in that described oil collecting system also includes
One valve, the second valve, the 3rd valve, the 4th valve, the 5th valve, the 6th valve；
Described first valve is arranged on described crude oil intake pipeline, and described second valve is arranged in described
On the described service bobbin line of service cylinder upstream, described 3rd valve is arranged in described service cylinder downstream
On described service bobbin line, described 4th valve is arranged in the described ball collecting chamber pipe of described ball collecting chamber upstream
On line, described 5th valve is arranged on the described ball collecting chamber pipeline in described ball collecting chamber downstream, and described
Six valves are arranged on described crude oil export pipeline.
Oil collecting system the most according to claim 1, it is characterised in that described oil collecting system also includes setting
Put and bypass the first bypass valve on gathering line described first, and be arranged on described second bypass oil collecting pipe
The second bypass valve on line.
Oil collecting system the most according to claim 2, it is characterised in that described oil collecting system also includes
One Pressure gauge, the first thermometer, the second Pressure gauge, the second thermometer；
Described first Pressure gauge and described first thermometer are arranged at the described crude oil of described first valve downstream
On intake pipeline, described second Pressure gauge and described second thermometer are arranged at described 6th valve downstream
On described crude oil export pipeline.
Oil collecting system the most according to claim 1, it is characterised in that the length of described main gathering line
For 0.5-1.5km.
Oil collecting system the most according to claim 1, it is characterised in that the internal diameter of described main gathering line
For 55-65mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620383188.7U CN205640239U (en) | 2016-04-28 | 2016-04-28 | Oil well single tube through ball oil collecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620383188.7U CN205640239U (en) | 2016-04-28 | 2016-04-28 | Oil well single tube through ball oil collecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205640239U true CN205640239U (en) | 2016-10-12 |
Family
ID=57059874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620383188.7U Active CN205640239U (en) | 2016-04-28 | 2016-04-28 | Oil well single tube through ball oil collecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205640239U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109013586A (en) * | 2018-08-29 | 2018-12-18 | 中国石油工程建设有限公司 | A kind of gathering line segmentation pigging system and method |
-
2016
- 2016-04-28 CN CN201620383188.7U patent/CN205640239U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109013586A (en) * | 2018-08-29 | 2018-12-18 | 中国石油工程建设有限公司 | A kind of gathering line segmentation pigging system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205859613U (en) | Oil well water-mixing oil-collecting process system | |
| CN109440863A (en) | Environment-friendly type rainwater recycling system | |
| CN205640239U (en) | Oil well single tube through ball oil collecting system | |
| CN206539786U (en) | A kind of composite oil-gas pipeline | |
| CN202691596U (en) | Oil collecting and ball collecting integrated device | |
| CN204064055U (en) | A kind of water-water heat exchanger for heat recovery from sewage | |
| CN207702638U (en) | The cooling device of new wind cabinet | |
| CN201874705U (en) | Paraffin control device for diesel oil in diesel oil engine | |
| CN204943970U (en) | Water source heat pump combined type system | |
| CN208381762U (en) | A kind of Multi-functional oil field Crude Oil Transportation individual well pipe-line system | |
| CN104421558A (en) | T-shaped pipe | |
| CN205894150U (en) | Water circulating system from beginning | |
| CN210219062U (en) | Condensate water waste heat utilization system of long-distance steam pipeline | |
| CN207988976U (en) | A kind of multi-functional storage heating well-washing truck | |
| CN104930021B (en) | A kind of hydraulic pressure oil flushing equipment | |
| CN207279127U (en) | Gathering line heating unit | |
| CN206398200U (en) | A kind of fiberglass pipe | |
| CN206944322U (en) | Heat supply pipeline and the heating network for including it | |
| CN209195356U (en) | Oil nozzle air outlet anti-freezing heat preservation mechanism and throttling heat preservation integrated device | |
| CN105627029A (en) | Filtering type water supply pipe with antiseptic layers | |
| CN206001965U (en) | A kind of blockage resisting heat removing tube road system | |
| CN105042944B (en) | Water source heat pump combined type system | |
| CN205782014U (en) | Condensate oil conveying system | |
| CN204492758U (en) | A kind of Petroleum Production on-the-spot oil pipe thorn cleaning device | |
| CN203559938U (en) | Steam communication pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |