CN105422050A - Downhole autonomous power supply oil saturation control intelligent flow control flow string - Google Patents
Downhole autonomous power supply oil saturation control intelligent flow control flow string Download PDFInfo
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- CN105422050A CN105422050A CN201510920201.8A CN201510920201A CN105422050A CN 105422050 A CN105422050 A CN 105422050A CN 201510920201 A CN201510920201 A CN 201510920201A CN 105422050 A CN105422050 A CN 105422050A
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- mandarin
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- 239000012530 fluid Substances 0.000 claims abstract description 37
- 238000004891 communication Methods 0.000 claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims abstract description 13
- 239000000523 sample Substances 0.000 claims abstract description 10
- 238000004458 analytical method Methods 0.000 claims abstract description 9
- 230000003287 optical effect Effects 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 8
- 238000003860 storage Methods 0.000 claims abstract description 8
- 241001672694 Citrus reticulata Species 0.000 claims description 23
- 230000009467 reduction Effects 0.000 claims description 11
- 210000004027 cell Anatomy 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 210000000635 valve cell Anatomy 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 6
- 239000003129 oil well Substances 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000004941 influx Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 241000894007 species Species 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from 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
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses a downhole autonomous power supply oil saturation control intelligent flow control flow string. A downhole generator is utilized as a storage battery to be charged to form a power source. The specific resistance flowing into fluid is detected through a saturability probe. The oil saturation is determined through microcomputer analysis, a computer coordinately calculates a valve opening degree of the unit through underwater acoustic communication technology or optical cable communication with other downhole units and the saturation, the electric quantity of the storage battery is utilized for charging the farad capacitor to form higher starting current, the current is utilized for driving a motor to drive a valve to be switched to the deserved opening degree, and formation fluid of a produced fluid profile is made to enter the flow string under the opening degree. Fluid flowing into the multiple units is gathered inside the flow string, the total flow with the maximum oil production is formed, and therefore an oil well can produce fluid in the optimal state at all stages. All the processes are autonomously completed through downhole facilities, no ground control interference is needed, and no ground power needs to be provided.
Description
Technical field
The present invention relates to oil field well pcf, particularly a kind of down-hole self-powered by the oil recovery oil pipe of micro computer oil saturation Based Intelligent Control inbound traffics.
Background technology
Existing oil field well oil recovery section place reservoir, because of deposition, structure, the reason of the aspects such as diagenesis, always there is the non-average of infiltration and oil saturation, in this causes fluid to flow from stratum toward well wellbore under strata pressure drives, on different profile position, the flowing velocity of fluid is different, after oil mining a period of time, production profile always there will be the high interval of permeability and the low easier production fluid of fluid place section of viscosity, usually higher relative to water (or gas) viscosity oil, this is part bad thing, because water (or gas) can run much faster than oil, so the well recovery later stage moisture (gas) can cause full well moisture (gas) to rise fast because of the water outlet (or gas) of part well section.Its consequence is that oil production sharply reduces, and producing water (gas) amount sharply increases, thus greatly reduces oil well benefit.For this problem, forefathers develop the downhole fluid control device relevant to density and the downhole fluid control device relevant with viscosity.AICD (autonomous fluid control devices) technology of such as Britain TENDEKA company is exactly to one that controls production profile comprehensive production fluid effect extremely successful technology with differences in viscosity, it controls the influx of formation fluid by the size of perception viscosity, by autonomous controlling opening of valve by the high fluid (oil) of viscosity more multithread enter, and the fluid making viscosity low (water or highly aqueous water mixed liquid or gas) less flows into.But no matter control with density or with viscosity to control production fluid, all there are restraining factors.For density correlation technique, prerequisite is the density contrast of oil and water, and this difference is within 0.3kg/L, and therefore validity can not be very high, and then limited especially for viscous crude (density >0.82kg/L) effect; And for viscosity correlation technique, be then substantially only applicable to water-bearing crude oil and gassiness thin oil, even have viscosity lower than the thin oil of water viscosity for profit differences in viscosity is little, viscosity correlation technique is then helpless.The another one problem that these equipment also exist, namely each equipment room is separate, does not coordinate, and is thus difficult to the target reaching full production profile optimal production.
An other class intelligent oil extraction technology is then be transferred to central station with the monitoring information that underground is complete by cable (or optical cable), instruction is sent to down-hole switch equipment after central station analytical calculation, power (electricity or the hydraulic pressure) controlled valve that down-hole switch equipment utilization ground installation provides, thus liquid is adopted in optimization.The weak point of this kind of technology is that one is that analytical calculation facility and power source are all on ground, down-hole facility is only responsible for performing switch order, be connected by the cable grown very much (technology had even needs hydraulic line) between ground with down-hole facility, considerably increase complexity and the completion cost of completion.
Summary of the invention
The object of this invention is to provide the self-powered oil saturation in a kind of down-hole and control intelligent flow control flow string, to solve the timely monitoring utilized the oil saturation of section different on production profile, the micro computer analytical calculation carried by equipment, the Liquid output of each production fluid section of dynamic coordinate, thus entirely adopting liquid profile optimizing technique production fluid, make the technical problems such as produced fluid oil content maximization.
In order to realize foregoing invention object, the technical solution adopted in the present invention is as follows:
The self-powered oil saturation in a kind of down-hole controls intelligent flow control flow string, comprises body, outer cover, the opening that becomes a mandarin, enters flow control valve and drive unit, TRT, saturation ratio probe, pressure and temperature and flow rate detecting device, underwater sound communication or fiber optic cable communications device, analysis & control micro-computer unit, electric power storage and charging circuit unit and farad level capacitor cell; There is the screw socket meeting oil pipe standard at described body two ends, and there is the opening that becomes a mandarin side, and have a valve body groove, a micro computer and electric power storage erection of equipment basal plane, a control valve drive unit installation base surface in body; The described opening part that becomes a mandarin is provided with a generator support, and the generator of TRT is arranged on generator support; Described enter flow control valve comprise valve body and screw rod; Valve body is positioned at valve body groove and is moved by the guide rail of valve body groove both sides, realize opening the blocking in various degree that become a mandarin, this valve body there is a rill metering-orifice, described screw rod one end is connected with valve body, the other end is connected with the driven pulley of train of reduction gears, the driving wheel of this train of reduction gears is arranged on the turning cylinder of servomotor, and servomotor is powered by farad capacitor, and the charging of farad capacitor is completed by the analyzed battery dispatched with control micro-computer unit; The analysis & control micro-computer unit realizing the switch control rule of valve connects; The generator of TRT by its blade rotary electrification of fluid driven that becomes a mandarin, to battery electric power storage after charging circuit unit; Detection flows is positioned on through the saturation ratio probe of the formation fluid resistivity of the opening that becomes a mandarin the opening part that becomes a mandarin, and is connected with analysis & control micro-computer unit; Pressure and temperature and flow rate detecting device are arranged in the sensor openings of body, and are connected with analysis & control micro-computer unit; Communications portion is connected with other valve cell of down-hole by underwater sound communication unit or optical cable and communicates; Described external cover on body, to there being the opening that becomes a mandarin on it.
Generator amature is fixed on generator support, and generator impeller blade is contained on generator unit stator.
The present invention has following positive beneficial effect:
Saturation ratio of the present invention controls intelligent oil extraction pipe, downhole generator is utilized to form power supply for charge in batteries, the resistivity of incoming fluid is detected to determine oil saturation by saturation ratio probe, computer passes through water sound communication technique or fiber optic cable communications according to this saturation ratio and other invention unit of down-hole, coordinate the valve openings degree calculating this unit, accumulator electric-quantity is utilized to form higher starting current for farad capacitor charges, utilize this electric current drive motor driver's valve door switch to due opening degree, under this opening degree, allow the formation fluid of this production profile section enter.The incoming fluid of multiple unit collects in oil pipe, to form the optimized total flow of oil-containing, thus make oil well can with optimized state production fluid in all stages, and overall process be all independently completed by down-hole facility, do not need ground to control to intervene, do not need ground to provide power yet.
Accompanying drawing explanation
Fig. 1 is structural front view schematic diagram of the present invention.
Fig. 2 is the structure top view concealing outer cover of the present invention.
Fig. 3 is the structural front view concealing outer cover of the present invention.
Fig. 4 is lateral view of the present invention.
Fig. 5 is three-dimensional structure diagram of the present invention.
Fig. 6 is the A partial structurtes schematic diagram of Fig. 3.
Fig. 7 is the B partial structurtes schematic diagram of Fig. 3.
Fig. 8 is the enforcement illustration that multiple-unit with well of the present invention is applied to down-hole.
Fig. 9 is the sectional drawing along C-C direction of Fig. 8.
Figure 10 is the schematic diagram that the multiple-unit concealing sleeve pipe of the present invention is applied to down-hole.
Figure 11 is the sectional drawing along A-A direction of Figure 10.
Figure 12 is the schematic diagram of A local valve 2/3 opening in Fig. 3.
Figure 13 is the schematic diagram of A local valve complete shut-down in Fig. 3.
Number in figure:
1 body 2 valve body 3 generator
4 become a mandarin opening 5 servomotor 6 temperature and pressure flow velocity detector
7 communication unit 8 train of reduction gears 9 spirals
10 screw rod 11 generator impeller blade 12 generator supports
13 impeller kuppe 14 battery 15 signals and control and ampere wires
16 micro computer 17 farad capacitor 18a, 18b saturation ratio probe electrode
19 rill metering-orifice 20 valve body guide rail 21 packers
22 ordinary casing 23 screen casings or perforated casing 24 plain tubing
25 outer cover 26 outer covers become a mandarin opening 27 communicate with feed cable (optical cable)
Detailed description of the invention
Please refer to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, the present invention is that a species saturation controls intelligent oil extraction pipe, comprises body 1, valve body 2, generator 3, the opening 4 that becomes a mandarin, servomotor 5, temperature and pressure flow velocity detector 6, communication unit 7, train of reduction gears 8, spiral 9, screw rod 10, signal and pilot 15, micro computer 16, farad capacitor 17, saturation ratio probe 18a with 18b, valve body guide rail 20, outer cover 25, communicates and feed cable (optical cable) 27.Shown in Figure 6, body 1 becomes a mandarin opening 4, generator support 12, generator 3 rotor is fixed on generator support, generator impeller blade 11 is contained on generator 3 stator, valve body guide rail 20 is arranged on the valve body groove both sides of body 1, valve body 2, between two guide rails 20, valve body 2 has a rill metering-orifice 19.Shown in Figure 7, the driving wheel of train of reduction gears 8 is arranged on the turning cylinder of servomotor 5, and the driven pulley of train of reduction gears is arranged on the outside of spiral, and valve body 2 is connected with screw rod.Generator 3, servomotor 5, saturation ratio probe 18a, 18b, temperature and pressure flow velocity detector 6, communication unit 7, battery 14, farad capacitor 17 are connected with micro computer 16 by signal and pilot 15.
Please refer to shown in Fig. 8, Fig. 9, Figure 10, Figure 11, two invention unit computers are connected with feed cable (optical cable) 27 by communication.
The present invention is before application is gone into the well, electricity should be full of in battery 14, when formation fluid by become a mandarin opening 4 or rill metering-orifice 19 under strata pressure drives to body 1 internal flow time, fluid is by pushing generator impeller blade 11, thus drive electrical generators 3 stator rotates and generation current, electric current sends micro computer 16 to through wire 15, and this current commutates accumulators 14 charges by micro computer 16, saturation ratio probe electrode 18a, 18b timing detects the resistance value by the formation fluid of become a mandarin opening 4 or rill metering-orifice, and this resistance is passed to micro computer 16, the temperature of the fluid in the oil pipe detected, pressure, flow rate information are passed to micro computer 16 by temperature and pressure flow velocity detector 6, micro computer 16 is communicated with adjacent invention unit with power supply optical cable (optical cable) 27 by underwater sound communication unit 7 or communication, to seek the opinion of the saturation ratio of adjacent cells, pressure information, and with oil yield maximization for criterion and adjacent cells synchronously calculate respective due flow quota, micro computer 16 goes out the due aperture of this unit valve according to the flow quota of this unit and this section of formation pressure calculation, schedule electric accumulator 14 charges for farad capacitor 17, and utilize the available larger current of farad capacitor 17 to start servomotor 5, servomotor 5 rotates by the instruction of micro computer 16 and drives train of reduction gears 8 to rotate, train of reduction gears 8 drives spiral 9 to rotate, spiral 9 rotates and drive screw 10 moves, screw rod 10 moves and pulls valve body 2 to move, valve body 2 moves to assigned address servomotor 5 and stops operating.
See Fig. 6, Figure 12, shown in Figure 13, valve body 2 moves can have blocking in various degree to the opening 4 that becomes a mandarin at diverse location, namely valve has different apertures, thus controllably layer fluid to the flow in body 1, which achieves function of the present invention, i.e. base area layer fluid oil saturation height, with down-hole adjacent cells communication-cooperation flow quota separately, drive valve body switch to control the fluid flow of each unit, the section containing innage is allowed to have many flows, what right oil-containing was low has few flow, moisture minimum after making the fluid collection entered to unit in oil well, oil yield is the highest.
Shown in Figure 13, the effect of rill metering-orifice 19 is that stratum still has and lacked fluid and can flow in body 1 when valve body 2 is in complete fastening position, this has the purposes of two aspects, the first is avoided forming abnormal pressure chamber at this unit, because abnormal pressure chamber is to the potential very large threat of oil security, it two is that this small flow is enough to drive electrical generators and rotates generating, thus keeps charge in batteries and be unlikely to long-time without the electricity of charging accumulator depleted (natural exhaustion or leakage).
In preferred embodiments, as underwater sound communication unit can enough miniaturizations, then use underwater sound communication, otherwise with fiber optic cable communications; Consider that part production profile may exist the not enough and situation of no liquid supply of the time pressure of a section longer, multiple unit can be connected and share power supply by practical cable; Driven by servomotor part also can be considered to drive without train of reduction gears and spiral screw rod to combine and the mode of consideration hydraulic pump drive valve body movement in the specific implementation, to reduce rotatable parts, improves long-term stability.
Claims (2)
1. the self-powered oil saturation in down-hole controls intelligent flow control flow string, it is characterized in that, comprise body, outer cover, the opening that becomes a mandarin, enter flow control valve and drive unit, TRT, saturation ratio probe, pressure and temperature and flow rate detecting device, underwater sound communication or fiber optic cable communications device, analysis & control micro-computer unit, electric power storage and charging circuit unit and farad level capacitor cell; There is the screw socket meeting oil pipe standard at described body two ends, and there is the opening that becomes a mandarin side, and have a valve body groove, a micro computer and electric power storage erection of equipment basal plane, a control valve drive unit installation base surface in body; The described opening part that becomes a mandarin is provided with a generator support, and the generator of TRT is arranged on generator support; Described enter flow control valve comprise valve body and screw rod; Valve body is positioned at valve body groove and is moved by the guide rail of valve body groove both sides, realize opening the blocking in various degree that become a mandarin, this valve body there is a rill metering-orifice, described screw rod one end is connected with valve body, the other end is connected with the driven pulley of train of reduction gears, the driving wheel of this train of reduction gears is arranged on the turning cylinder of servomotor, and servomotor is powered by farad capacitor, and the charging of farad capacitor is completed by the analyzed battery dispatched with control micro-computer unit; The analysis & control micro-computer unit realizing the switch control rule of valve connects; The generator of TRT by its blade rotary electrification of fluid driven that becomes a mandarin, to battery electric power storage after charging circuit unit; Detection flows is positioned on through the saturation ratio probe of the formation fluid resistivity of the opening that becomes a mandarin the opening part that becomes a mandarin, and is connected with analysis & control micro-computer unit; Pressure and temperature and flow rate detecting device are arranged in the sensor openings of body, and are connected with analysis & control micro-computer unit; Communications portion is connected with other valve cell of down-hole by underwater sound communication unit or optical cable and communicates; Described external cover on body, to there being the opening that becomes a mandarin on it.
2. the self-powered oil saturation in a kind of down-hole according to claim 1 controls intelligent flow control flow string, and it is characterized in that, generator amature is fixed on generator support, and generator impeller blade is contained on generator unit stator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510920201.8A CN105422050B (en) | 2015-12-11 | 2015-12-11 | The self-powered oil saturation in underground controls intelligent flow control flow string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510920201.8A CN105422050B (en) | 2015-12-11 | 2015-12-11 | The self-powered oil saturation in underground controls intelligent flow control flow string |
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| Publication Number | Publication Date |
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| CN105422050A true CN105422050A (en) | 2016-03-23 |
| CN105422050B CN105422050B (en) | 2017-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510920201.8A Active CN105422050B (en) | 2015-12-11 | 2015-12-11 | The self-powered oil saturation in underground controls intelligent flow control flow string |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060915A (en) * | 2016-11-08 | 2018-05-22 | 安东柏林石油科技（北京）有限公司 | The completion structure of decreasing water cut and increasing oil ability can be improved |
| CN110475942A (en) * | 2017-03-28 | 2019-11-19 | 沙特阿拉伯石油公司 | System and method for automatically flowing into control device design |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280677A (en) * | 2007-03-13 | 2008-10-08 | 普拉德研究及开发股份有限公司 | A flow control assembly having a fixed flow control device and an adjustable flow control device |
| WO2013130057A1 (en) * | 2012-02-29 | 2013-09-06 | Halliburton Energy Services, Inc. | Downhole fluid flow control system and method having a fluidic module with a flow control turbine |
| WO2015026901A1 (en) * | 2013-08-22 | 2015-02-26 | Baker Hughes Incorporated | Modified flow rate analysis |
| CN204327054U (en) * | 2014-12-03 | 2015-05-13 | 东营市福利德石油科技开发有限责任公司 | The stepless flow control device of hydraulic intelligent |
| CN205260009U (en) * | 2015-12-11 | 2016-05-25 | 北京大业嘉成科技有限公司 | Producing string is flowed in accuse of oil saturation that independently supplies power in pit control intelligence |
-
2015
- 2015-12-11 CN CN201510920201.8A patent/CN105422050B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280677A (en) * | 2007-03-13 | 2008-10-08 | 普拉德研究及开发股份有限公司 | A flow control assembly having a fixed flow control device and an adjustable flow control device |
| WO2013130057A1 (en) * | 2012-02-29 | 2013-09-06 | Halliburton Energy Services, Inc. | Downhole fluid flow control system and method having a fluidic module with a flow control turbine |
| WO2015026901A1 (en) * | 2013-08-22 | 2015-02-26 | Baker Hughes Incorporated | Modified flow rate analysis |
| CN204327054U (en) * | 2014-12-03 | 2015-05-13 | 东营市福利德石油科技开发有限责任公司 | The stepless flow control device of hydraulic intelligent |
| CN205260009U (en) * | 2015-12-11 | 2016-05-25 | 北京大业嘉成科技有限公司 | Producing string is flowed in accuse of oil saturation that independently supplies power in pit control intelligence |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060915A (en) * | 2016-11-08 | 2018-05-22 | 安东柏林石油科技（北京）有限公司 | The completion structure of decreasing water cut and increasing oil ability can be improved |
| CN108060915B (en) * | 2016-11-08 | 2024-03-12 | 安东柏林石油科技（北京）有限公司 | Completion structure capable of improving dewatering and oil increasing capacity |
| CN110475942A (en) * | 2017-03-28 | 2019-11-19 | 沙特阿拉伯石油公司 | System and method for automatically flowing into control device design |
| CN110475942B (en) * | 2017-03-28 | 2021-11-02 | 沙特阿拉伯石油公司 | System and method for automatic inflow control device design |
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| CN105422050B (en) | 2017-11-28 |
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