CN107100589A - A kind of underground device for continuously adding medicine - Google Patents
A kind of underground device for continuously adding medicine Download PDFInfo
- Publication number
- CN107100589A CN107100589A CN201710551505.0A CN201710551505A CN107100589A CN 107100589 A CN107100589 A CN 107100589A CN 201710551505 A CN201710551505 A CN 201710551505A CN 107100589 A CN107100589 A CN 107100589A
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- rock core
- flow sub
- valve body
- cavity
- seepage cavity
- Prior art date
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- 239000003814 drug Substances 0.000 title claims abstract description 45
- 239000011435 rock Substances 0.000 claims abstract description 55
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 238000012856 packing Methods 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 229940079593 drug Drugs 0.000 abstract description 4
- 238000011161 development Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000857 drug effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000005325 percolation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003860 storage 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/06—Methods or apparatus for cleaning boreholes or wells using chemical means for preventing or limiting, e.g. eliminating, the deposition of paraffins or like substances
-
- 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
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A kind of underground device for continuously adding medicine, is related to oil-gas field development technical field.Including permanent flow valve and it is connected to the packer of permanent flow valve upper end；Packer includes upper flow sub, central tube and the lower flow sub being sequentially connected, drainage channel is provided with side wall between central tube, upper flow sub, lower flow sub, it is provided with upper flow sub on the first inlet, lower flow sub and is provided with the first liquid outlet；Permanent flow valve includes the valve body of annular, seepage cavity is provided with the side wall of valve body, slided in seepage cavity and be provided with rock core, spring is provided between the lower surface of rock core and the bottom of seepage cavity, the inlet of top second of the valve body, second inlet is connected by mozzle with first liquid outlet, and the bottom of valve body is provided with the second liquid outlet.Underground drug adding device realizes automatic, quantitative, continuous dosing and avoids people from being contacted with medicament, avoids medicament and air contact, safe and environment-friendly, accurate, efficient, therefore with wide market application foreground.
Description
Technical field
The present invention relates to oil-gas field development technical field, specially a kind of underground device for continuously adding medicine.
Background technology
In oilfield development process, in order to ensure the normal production of oil well, it is often necessary to which being added from ground to underground has
The various chemical medicaments of the functions such as Paraffin Removal, anti-corrosion, antiscale.
The dosing method that current oil field production is mainly used is well head medicine-adding mode.Underground dosing method is surveyed still in experiment
The examination stage.Well head medicine-adding mode is artificial by tank Chinese medicine, and underground is poured into by sleeve pipe.There is subject matter is：（1）Every Cai Jing
Surface annulus dosing can not be implemented；（2）Liquid waste is serious.Daily chemical feeding quantity 0.2-4L, decoction flows about 1-2km along tube wall,
Attachment loss of the medicament on wall is larger, influences dosing effect；Winter medicament needs are antifreeze, and summer wants volatilization prevention.（3）Dosing work
Work amount is big, complex procedures, efficiency are low.The average dosing in 5 days of every mouthful of well is once.Need to drain casing gas before dosing, it is zero to make casing pressure.
Then prepad fluid is added, then pours into medicament, after pad.Current underground dosing method is, as drug storage pipe, to incite somebody to action underground tail pipe
Liquid or solid medicament is added to underground tail pipe.Solid chemicals are added under pump in screen casing, slow mechanism dissolved release drug effect；Liquid preparation
Using special valve, pump or using crude oil and the density contrast of medicament, medicament is added under pump.Because there is quantitative control hardly possible, dosing week
Phase is short, the problem of easily occurring stopping state, and the underground dosing method used is disabled substantially.
The content of the invention
The invention aims to solve the problem of existing dosing method is present to fill there is provided a kind of underground continuous dosing
Put, in closed environment, the arrangement achieves medicament it is automatic, quantitative, add for a long time.
That realizes above-mentioned purpose can use two kinds of different technical schemes：
1）A kind of underground device for continuously adding medicine, it is characterised in that：Including permanent flow valve and it is connected to the packer of permanent flow valve upper end；
The packer includes central tube, and the upper end of central tube is connected with flow sub, and the lower end of central tube, which is connected with down, draws
Flow and be set with multiple packing elements separated by spacer on joint, the central tube between upper flow sub and lower flow sub, it is described
Interconnected drainage channel is provided with side wall between central tube, upper flow sub, lower flow sub, the upper drainage connects
It is provided with head and is provided with first connected with drainage channel on the first inlet connected with drainage channel, lower flow sub and goes out
Liquid mouthful；
The permanent flow valve includes the valve body of annular, the upper end of valve body and the lower flow sub screwed connection of packer, the side of valve body
It is provided with to slide in seepage cavity, seepage cavity in wall and is provided with rock core, is provided between the lower surface of rock core and the bottom of seepage cavity
Spring, the top of the valve body is provided with the second inlet connected with the seepage cavity above rock core, and the second inlet is by leading
Flow tube is connected with first liquid outlet, and the bottom of the valve body is provided with connected with the seepage flow cavity below rock core
Two liquid outlets.
2）A kind of underground device for continuously adding medicine, it is characterised in that：Including permanent flow valve and it is connected to the envelope of permanent flow valve lower end
Every device；
The permanent flow valve, which includes being provided with the valve body of annular, the side wall of valve body sliding in seepage cavity, seepage cavity, to be provided with
Rock core, is provided with spring between the lower surface of rock core and the bottom of seepage cavity, the top of the valve body is provided with and rock core top
Seepage cavity connection the first inlet, the bottom of the valve body is provided with first connected with the seepage cavity below rock core and goes out liquid
Mouthful；
The packer includes central tube, and the upper end of central tube is connected with flow sub, the upper end of upper flow sub and valve body
Lower contact screwed connection, the lower end of central tube is connected with lower flow sub, the center between upper flow sub and lower flow sub
Multiple packing elements separated by spacer, the central tube, upper flow sub, the interior setting of side wall of lower flow sub are set with pipe
Have and be provided with the second inlet connected with drainage channel on interconnected drainage channel, the upper flow sub, second enters
Liquid mouthful is connected by mozzle with first liquid outlet, and second connected with drainage channel is provided with lower flow sub
Liquid outlet.
Further, technical scheme 1）Described in upper flow sub the first inlet on be connected with upwardly extend anti-
Stifled drainage tube.
Further, technical scheme 2）The anti-blocking drainage upwardly extended is connected with first inlet on the valve body top
Pipe.
Permanent flow valve in the underground device for continuously adding medicine of above two technical scheme also includes two kinds of different structures：
1）Stream chamber described in the permanent flow valve of the first structure is the multiple circular cylindrical cavities being arranged in body wall, each cylinder
Shape cavity includes correspondence slip in the upper seepage cavity and lower seepage cavity being mutually communicated, each cylindrical cavity body and is provided with a circle
The rock core of cylindricality, gap coordinates close slide between corresponding lower seepage cavity to match somebody with somebody between each rock core and corresponding upper seepage cavity
Close, spring is provided between the rock core of each cylinder and the bottom of Correspondent cy linder shape cavity.
）Seepage cavity described in the permanent flow valve of second of structure is the annular housing being arranged in body wall, and annular
Cavity includes the upper seepage cavity and lower seepage cavity being mutually communicated, and the rock core is the annular rock core being arranged in annular housing, institute
State and be closely slidably matched between gap cooperation and lower seepage cavity between annular rock core and upper seepage cavity, the spring is arranged on rock
The bottom of the heart and annular housing.
The present invention is, in the upper end of existing packer or lower end concatenation permanent flow valve, to keep the property such as original separation, well-flushing
On the basis of energy, make the decoction in the annular space above the permanent flow valve and packer that mutually concatenate by permanent flow valve, it is automatic, quantitative, steady
In fixed, the production liquid that is continuously added under instrument, be sufficiently mixed through pump, Bottomhole pressure, reach Paraffin Removal, anti-corrosion, antiscale, slow
Erosion, the purpose of viscosity reduction.
Beneficial effects of the present invention：
1st, it will be changed to only add once for 1 year by original 1-5 days plus 1 time, reduce workload, reduce labor intensity, significantly drop
Low cost.
2nd, medicament is stored in the underground confined space between down-hole oil tube and sleeve pipe, protects environment, improves drug effect.
3rd, underground drug adding device realizes automatic, quantitative, continuous dosing and avoids people from being contacted with medicament, avoids medicament and air
Contact, it is safe and environment-friendly, accurate, efficient, therefore with wide market application foreground.
Brief description of the drawings
Fig. 1 is the structural representation of first embodiment of the invention；
Fig. 2 is the structural representation of the permanent flow valve of first embodiment；
Fig. 3 be in Fig. 2 A-A to sectional view；
Fig. 4 is the structural representation of second embodiment of the invention；
Fig. 5 is the structural representation of the permanent flow valve of second embodiment；
Fig. 6 be in Fig. 5 B-B to sectional view；
Fig. 7 is the working state schematic representation of the underground device for continuously adding medicine of first embodiment.
Embodiment
First embodiment：
As Figure 1-3, a kind of underground device for continuously adding medicine, including permanent flow valve 1 and the packer for being connected to permanent flow valve upper end
2。
Packer 2 includes central tube 2-1, and central tube 2-1 upper end is connected with flow sub 2-2, central tube 2-1
End be connected with lower flow sub 2-3, the central tube 2-1 between upper flow sub 2-2 and lower flow sub 2-3 be set with it is multiple
The packing element 2-5 separated by spacer 2-4, central tube 2-1, upper flow sub 2-2, it is provided with lower flow sub 2-3 side wall
The the first inlet 2-7 connected with drainage channel 2-6 is provided with interconnected drainage channel 2-6, upper flow sub 2-2,
The first liquid outlet 2-8 that 2-6 is connected with drainage channel is provided with lower flow sub 2-3.
Permanent flow valve 1 includes the valve body 1-1 of annular, and valve body 1-1 upper end connects with the lower flow sub 2-3 screw threads of packer 2
Connect, two circular cylindrical cavity 1-4 are provided with valve body 1-1 side wall as seepage cavity, each circular cylindrical cavity 1-4 includes mutual
Gap coordinates and lower seepage cavity 1- between the upper seepage cavity 1-9 and lower seepage cavity 1-10, rock core 1-5 and upper seepage cavity 1-9 of insertion
Closely it is slidably matched between 10.
Rock core 1-5, rock core 1-5 lower surface and circular cylindrical cavity 1-4 bottom are respectively arranged with circular cylindrical cavity 1-4
Between be provided with spring 1-6, valve body 1-1 top is provided with the second feed liquor connected respectively with rock core 1-5 circular cylindrical cavities 1-4
Mouthful 1-7, the second inlet 1-7 are connected by mozzle 3 with the first liquid outlet 2-7, and valve body 1-1 bottom is provided with difference
The the second liquid outlet 1-8 connected with the circular cylindrical cavity 1-4 below rock core 1-5.
As the preferred of the present embodiment, can also be concatenated between valve body 1-1 upper end and lower flow sub 2-3 lower end to
A few tubing nipple 20.
As the preferred of the present embodiment, to avoid upper flow sub 2-2 the first inlet 2-7 blockage phenomenons,
The clogging-proof drainage tube 7 upwardly extended is connected with flow sub 2-2 the first inlet.
Second embodiment：
As Figure 4-Figure 6, a kind of underground device for continuously adding medicine, including permanent flow valve 4 and packer 5, permanent flow valve 4 include the valve of annular
Seepage cavity 4-4 is provided with body 4-1, valve body 4-1 side wall, the upper seepage cavity 4-9 that seepage cavity 4-4 includes being mutually communicated oozes with
Chamber 4-10 is flowed, gap coordinates between rock core 4-5 and upper seepage cavity 4-9 is closely slidably matched between lower seepage cavity 4-10.
Rock core 4-5 is provided with seepage cavity 4-4, bullet is provided between rock core 4-5 lower surface and seepage cavity 4-4 bottom
Spring 4-6, valve body 4-1 top are provided with the first inlet 4-7 connected with cavity above rock core 4-5, and valve body 4-1 bottom is set
It is equipped with the first liquid outlet 4-8 connected with cavity below rock core 4-5.
Packer 5 includes central tube 5-1, and central tube 5-1 upper end is connected with flow sub 5-2, upper flow sub 5-2
Upper end and valve body 4-1 lower end screwed connection, central tube 5-1 lower end is connected with lower flow sub 5-3, upper flow sub 5-
Multiple packing element 5-5 separated by spacer 5-4, central tube 5- are set with central tube 5-1 between 2 and lower flow sub 5-3
1st, upper flow sub 5-2, be provided with interconnected drainage channel 5-6, upper flow sub 5- in lower flow sub 5-3 side wall
The second the inlet 5-7, the second inlet 5-7 connected with drainage channel 5-6 is provided with 2 liquid is gone out by mozzle 6 and first
The the second liquid outlet 5-8 connected with drainage channel 5-7 is provided with mouth 4-8 connection connections, lower flow sub 5-3.
Further, to avoid the first inlet 4-7 blockage phenomenons on valve body 4-1 tops, the of valve body 4-1 tops
The clogging-proof drainage tube 9 upwardly extended is connected with one inlet 4-7.
First embodiment and second embodiment difference are：Permanent flow valve 1 in first embodiment is connected under packer 2
Permanent flow valve 4 in end, second embodiment is connected to the upper end of packer 5, and principle is identical.
Below by taking first embodiment as an example to the operation principle of the present invention as illustrating.
As shown in fig. 7, in use, underground device for continuously adding medicine is serially connected on the oil pipe 19 in down-hole casing 18, in well
Medicament needed for annular space above lower device for continuously adding medicine disposably adds some cycles and protection liquid, medicament and protection liquid are through anti-blocking
Drainage tube 7 sequentially enters gap between drainage channel 2-6, the rock core 1-5 of packer 2 and upper seepage cavity 1-9, positioned at lower seepage cavity
Rock core 1-5 in 1-10, then in the annular space below the second liquid outlet 1-8 inflows of valve body 1-1 bottoms.
Because medicament and protection liquid are in firm addition, liquid level is high, pressure is big, medicament and protection seepage flow of the liquid through rock core 1-5
Speed, and over time, medicament and protection liquid are gradually used up, and gradually step-down, pressure is gradually for the height of liquid level
Diminish, it is slack-off between medicament and protection percolation flow velocity of the liquid through rock core 1-5.And in order to ensure quantitative, stable addition, in rock core 1-
5 bottoms are provided with spring 1-6, enable the length that rock core 1-5 is located in lower seepage cavity 1-9 according to medicament and the pressure of protection liquid
Change is automatically adjusted, so as to realize medicament and the stable addition of protection liquid.
The present invention can realize it is automatic, quantitative, stably, in the production liquid that is continuously added under instrument, it is only necessary to according to plus
Medicine speed, agent viscosity, pressure difference above and below packer stuck point position, by laboratory experiment, according to Darcy's law, the certain infiltration of selection
The natural or artificial rock core of rate；Again according to packer stuck point position maximum pressure and minimum pressure values, and selected rock core
Cross-sectional area and length, choosing has certain yield factor（K）Spring；Concrete principle is as follows：
By Darcy's law, obtain：
……………………………（1）
Wherein：Q-flow, cm3/s；
The permeability of K-rock core, μm2
The cross-sectional area of F-rock core, cm2；
The pressure difference of-underground device for continuously adding medicine in-between, 0.1MPa；
μ- fluid viscosity, mPa.s；
L- rock core is located at the length in lower seepage cavity, cm.
For same permeable mass and fluid, K, F,μFor constant, i.e.,：
……………………………（2）
……………………………（3）
Stable at the uniform velocity flow is kept, i.e.,：
……………………………（4）
I.e.：
……………………………（5）
I.e.：
……………………………（6）
Meet formula（6）Permeable mass constant speed dosing can be achieved.
If the former a length of X of spring0, spring length is respectively X after compression1、X2, modulus of elasticity is K, and infiltration body weight is G, section
Product is S, then：
……………………………（7）
Because
………………………………………………（8）
By formula（8）Substitute into formula（7）
……（9）
……………………………（10）
Because G withCompared to infinitely small, it can ignore, so
=KL 1 ……………………………（11）
Similarly：
=KL 2 ……………………………（12）
By formula（11）With（12）
……………………………（13）
I.e.：
……………………………（14）
Formula（14）Meet formula（6）, that is, prove that constant speed can be achieved in the case where becoming pressure difference for the invention.
The selection of permeable mass permeability：
……………………………（15）
The selection of spring modulus：
……………………………（16）
……………………………（17）
From the foregoing, it will be observed that the present invention only needs to, according to pressure difference above and below dosing speed, agent viscosity, packer stuck point position, pass through room
Interior experiment, according to Darcy's law, selects the natural or artificial rock core of certain permeability；It is maximum according to packer stuck point position again
Pressure and minimum pressure values, and selected rock core cross-sectional area and length, it is possible to realize automatic, quantitative, stably, continuously
It is added in the production liquid under instrument.
Claims (6)
1. a kind of underground device for continuously adding medicine, it is characterised in that：Including permanent flow valve and it is connected to the packer of permanent flow valve upper end；
The packer includes central tube, and the upper end of central tube is connected with flow sub, and the lower end of central tube, which is connected with down, draws
Flow and be set with multiple packing elements separated by spacer on joint, the central tube between upper flow sub and lower flow sub, it is described
Interconnected drainage channel is provided with side wall between central tube, upper flow sub, lower flow sub, the upper drainage connects
It is provided with head and is provided with first connected with drainage channel on the first inlet connected with drainage channel, lower flow sub and goes out
Liquid mouthful；
The permanent flow valve includes the valve body of annular, the upper end of valve body and the lower flow sub screwed connection of packer, the side of valve body
It is provided with to slide in seepage cavity, seepage cavity in wall and is provided with rock core, is provided between the lower surface of rock core and the bottom of seepage cavity
Spring, the top of the valve body is provided with the second inlet connected with the seepage cavity above rock core, and the second inlet is by leading
Flow tube is connected with first liquid outlet, and the bottom of the valve body is provided with connected with the seepage flow cavity below rock core
Two liquid outlets.
2. a kind of underground device for continuously adding medicine, it is characterised in that：Including permanent flow valve and it is connected to the packer of permanent flow valve lower end；
The permanent flow valve, which includes being provided with the valve body of annular, the side wall of valve body sliding in seepage cavity, seepage cavity, to be provided with
Rock core, is provided with spring between the lower surface of rock core and the bottom of seepage cavity, the top of the valve body is provided with and rock core top
Seepage cavity connection the first inlet, the bottom of the valve body is provided with first connected with the seepage cavity below rock core and goes out liquid
Mouthful；
The packer includes central tube, and the upper end of central tube is connected with flow sub, the upper end of upper flow sub and valve body
Lower contact screwed connection, the lower end of central tube is connected with lower flow sub, the center between upper flow sub and lower flow sub
Multiple packing elements separated by spacer, the central tube, upper flow sub, the interior setting of side wall of lower flow sub are set with pipe
Have and be provided with the second inlet connected with drainage channel on interconnected drainage channel, the upper flow sub, second enters
Liquid mouthful is connected by mozzle with first liquid outlet, and second connected with drainage channel is provided with lower flow sub
Liquid outlet.
3. according to a kind of underground device for continuously adding medicine described in claim 1 or 2, it is characterised in that：The seepage cavity is to be arranged on
Multiple circular cylindrical cavities in body wall, each circular cylindrical cavity includes the upper seepage cavity and lower seepage cavity being mutually communicated,
Correspondence, which is slided, in each cylindrical cavity body is provided with a cylindrical rock core, between each rock core and corresponding upper seepage cavity between
Gap coordinates, is closely slidably matched between corresponding lower seepage cavity, the bottom of the rock core and Correspondent cy linder shape cavity of each cylinder
Between be provided with spring.
4. according to a kind of underground device for continuously adding medicine of claim 1 or 2, it is characterised in that：The seepage cavity is to be arranged on valve body-side
Annular housing in wall, and annular housing includes the upper seepage cavity and lower seepage cavity that are mutually communicated, and the rock core is to be arranged on
Annular rock core in annular housing, gap coordinates between the annular rock core and upper seepage cavity closely slides between lower seepage cavity
Dynamic to coordinate, the spring is arranged on the bottom of rock core and annular housing.
5. according to a kind of underground device for continuously adding medicine described in claim 1, it is characterised in that：First inlet of upper flow sub
On be connected with the clogging-proof drainage tube upwardly extended.
6. according to a kind of underground device for continuously adding medicine described in claim 2, it is characterised in that：First feed liquor on the valve body top
The clogging-proof drainage tube upwardly extended is connected with mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710551505.0A CN107100589B (en) | 2017-07-07 | 2017-07-07 | A kind of underground device for continuously adding medicine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710551505.0A CN107100589B (en) | 2017-07-07 | 2017-07-07 | A kind of underground device for continuously adding medicine |
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| Publication Number | Publication Date |
|---|---|
| CN107100589A true CN107100589A (en) | 2017-08-29 |
| CN107100589B CN107100589B (en) | 2019-02-01 |
Family
ID=59664485
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|---|---|---|---|
| CN201710551505.0A Active CN107100589B (en) | 2017-07-07 | 2017-07-07 | A kind of underground device for continuously adding medicine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630218A (en) * | 2019-09-18 | 2019-12-31 | 中国石油化工股份有限公司 | Mechanical control continuous dosing tubular column for pipe-inserting oil production well |
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