CN102418504A - Intelligent underground water distribution control device - Google Patents
Intelligent underground water distribution control device Download PDFInfo
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- CN102418504A CN102418504A CN2010102933166A CN201010293316A CN102418504A CN 102418504 A CN102418504 A CN 102418504A CN 2010102933166 A CN2010102933166 A CN 2010102933166A CN 201010293316 A CN201010293316 A CN 201010293316A CN 102418504 A CN102418504 A CN 102418504A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 76
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Abstract
The invention discloses an intelligent underground water distribution control device, and belongs to the field of petroleum. The device comprises a battery pack, an omnidirectional radiation antenna, a control circuit, a water nozzle, an actuating mechanism, a temperature sensor, a pressure sensor and a flow sensor which are arranged in a shell component, wherein parameter information such as underground temperature, pressure, flow and the like of a water injection well is continuously acquired through the temperature, pressure and flow sensor, data are stored in a storage medium of the control circuit, data uploading and instruction receiving are realized in a wireless mode through the omnidirectional radiation electric wire, and automatic adjustment of injection allocation quantity is realized by driving the water nozzle through the actuating mechanism.
Description
Technical field
The present invention relates to oil field, water distribution control device under particularly a kind of intelligence well.
Background technology
Water flooding recovery is the special technology of China, and the Oilfield using water flooding recovery of China more than 80% occupies critical role in China's oilfield exploitation.
Through years development, the meticulous water injection technology of China is in rank first, but existing water dispensing apparatus still exist the water filling qualification rate low, can not realize the down-hole status real time monitor and change problem such as adjust in real time according to water injection rate.Therefore, press for and a kind ofly can change adjustment water injection rate automatically according to conditions down-hole, and the intelligent water filling device of state parameter under the monitor well in real time.
Summary of the invention
For solve water dispensing apparatus of the prior art exist the water filling qualification rate low, can not realize the down-hole status real time monitor and change problem such as adjust in real time that the embodiment of the invention provides water distribution control device under a kind of intelligence well according to water injection rate.Said technical scheme is following:
Water distribution control device under a kind of intelligence well; Said device comprises battery pack, omnidirectional antenna, control circuit, water nozzle, executing agency, temperature pick up, pressure sensor and the flow transmitter of being located in the housing unit; Wherein, said battery pack is used for to said control circuit and executing agency power supply being provided; Said omnidirectional antenna is used for the reception and the emission of wireless signal, realizes the reception of downhole data transmission and Ground Control instruction; Said control circuit is used to control said executing agency, said temperature pick up, said pressure sensor and the action of said flow transmitter; Said executing agency is used to drive said water nozzle and moves up and down, and adjusts described openings of sizes, realizes the adjusting of injection allocation amount; Said temperature pick up, said pressure sensor and said flow transmitter are respectively applied for the detection of reservoir temperature, formation pressure and the water nozzle flow of said down-hole.
Particularly; Said housing unit comprises housing; And the sensor support base and the plug that are connected the housing lower end; Battery pack, omnidirectional antenna, control circuit, executing agency and water nozzle from top to bottom are being set in the said housing in order, are being respectively equipped with the first flow and second runner that are connected in said sensor support base and the said plug, be provided with the water inlet that is connected with said first flow in the said sensor support base; Be provided with the weep hole that is connected with said second runner in the said plug; Said flow transmitter is arranged in the said first flow, and said pressure sensor is located in the said sensor support base, is provided with the pressure that is communicated with said pressure sensor in the said plug and draws the hole.
Particularly; Said executing agency is located between said housing and the said sensor support base, and said executing agency comprises reducing motor, the execution bar that links to each other with the output shaft of said reducing motor; And the lower end water nozzle of being located at said execution bar; Overlap then swivel nut and bearing support on the output shaft of said reducing motor from the inside to the outside in order, be provided with steel ball between said swivel nut and the said bearing support, said execution bar and said swivel nut outer cover are followed support set; The outer cover of said support set and said bearing support is followed gland, and the upper end of said execution bar is provided with guide pin.
Particularly, said water nozzle comprises water nozzle cover and the water nozzle seat of being located in order on the said execution bar from top to bottom.
Further, the corresponding said water inlet of said housing is provided with filter screen.
Particularly; Said omnidirectional antenna comprises antenna housing, coaxial cable and loaded antenna; Said coaxial cable and said loaded antenna are located in the said antenna housing, and said coaxial cable and said antenna housing junction are provided with the rigid seal assembly, and said rigid seal assembly is cutting ferrule and the pressure cap that is socketed on the said coaxial cable; Heart yearn in the said coaxial cable links to each other with said loaded antenna, and the position of corresponding said loaded antenna is provided with radiating aperture on the said antenna housing.
Particularly, said flow transmitter comprises sensor housing, is provided with the fluid course of perforation in the said sensor housing; Be provided with the target sheet in the said fluid course, corresponding said target sheet place is fixed with sensor base in the said sensor housing; Hollow target bar is set in the said sensor base; One end of said hollow target bar inserts in the said target sheet, and solid target bar is inserted at the center of said hollow target bar, and that end cover that stretches out said hollow target bar of said solid target bar is followed the eddy current target; The position of corresponding said eddy current target in the said sensor housing is provided with electric whirlpool probe and electronics storehouse.
Further, the upper end of said housing is connected with fishing head.
Further; The junction of the junction of said fishing head and said housing, said omnidirectional antenna and said housing, said sensor support base and said housing junction and said sensor support base and said plug junction, the flexible sealing structure that is respectively equipped with.
Particularly, said flexible sealing structure is the sealing of O type circle.
Further, be provided with flexible pad between said fishing head and the said battery pack.
The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is: compare prior art; The present invention can obtain parameter informations such as water injection well downhole temperature, pressure and flow for a long time continuously through temperature, pressure and flow transmitter; Above-mentioned storage is in the storage medium of control circuit; Realize data upload and command reception by the omnidirectional radiation electric wire with wireless mode, drive the automatic adjusting that water nozzle is realized the injection allocation amount through executing agency.Therefore the present invention can monitor the oil reservoir situation in real time; And, realize the automatic control of separated-zone water infection oil field, for the oil reservoir dynamic analog provides foundation according to actual conditions; Further improve the dynamic qualification rate of water filling and transfer efficient, improve field output, improve waterflood recovery efficiency factor thereby continue stable yields with surveying.
Description of drawings
Fig. 1 is a water distribution control device overall structure sectional view under the intelligence well that provides in the embodiment of the invention;
Fig. 2 a is the structure sectional view of the omnidirectional antenna that provides in the embodiment of the invention;
Fig. 2 b is the lateral view of Fig. 2 a;
Fig. 3 is the structure sectional view of the flow transmitter that provides in the embodiment of the invention.
In the accompanying drawing, the component list of each label representative is following:
1 shear pin,
2 fishing heads,
3 pads,
4 battery pack,
5 omnidirectional antennas, 5.1 antenna housings, 5.2 coaxial cables, 5.3 pressure caps, 5.4 cutting ferrules, 5.5 heart yearns, 5.6 loaded antennas, 5.7 installing holes, 5.8 radiating apertures,
6 control circuits,
7 reducing motors,
8 bearing supports,
9 swivel nuts,
10 guide pins,
11 support sets,
12 carry out bar,
13 water nozzle covers,
14 water nozzle seats,
15 sensor support bases,
16 flow transmitters, 16.1 plugs, 16.2 sensor housings, 16.3 pins, 16.4 eddy current probes; 16.5 the target sheet, 16.6 sensor base, 16.7 probe bases, 16.8 solid target bars, 16.9 hollow target bars; 16.10 the eddy current target, 16.11 screws, 16.12 electronics storehouses, 16.13 fluid courses
17 pressure sensors,
18 sealed supports,
19 pressure draw the hole,
20 plugs,
The 21O RunddichtringO,
22 weep holes,
23 second runners,
24 first flows,
25 filter screens,
26 water inlets,
27 glands,
28 steel balls.
The specific embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that embodiment of the present invention is done to describe in detail further below.
As shown in Figure 1; The embodiment of the invention provides water distribution control device under a kind of intelligence well, comprises battery pack 4, omnidirectional antenna 5, control circuit 6, water nozzle, executing agency, temperature pick up, pressure sensor and the flow transmitter 16 be located in the housing unit.Wherein, said battery pack 4 is used for to said control circuit 6 and executing agency power supply being provided.Said omnidirectional antenna 5 is used for the reception and the emission of wireless signal, realizes the reception of downhole data transmission and Ground Control instruction.Said control circuit 6 is used to control said executing agency, said temperature pick up, said pressure sensor and 16 actions of said flow transmitter.Said executing agency is used to drive said water nozzle and moves up and down, and adjusts described openings of sizes, realizes the adjusting of automatic injection allocation amount.Said temperature pick up, said pressure sensor and said flow transmitter 16 are respectively applied for the detection of reservoir temperature, formation pressure and the water nozzle flow of said down-hole; In the memory of above-mentioned data-storing in control circuit 6, can be delivered to ground through omnidirectional antenna 5 when needing.
The present invention can through temperature pick up, pressure sensor and flow transmitter; Enough parameter informations such as water injection well downhole temperature, pressure and flow that obtain continuously for a long time; And through control circuit with storage in the storage medium of control circuit, realize data upload and command reception by the omnidirectional radiation electric wire with wireless mode, drive the automatic adjusting that water nozzle is realized the injection allocation amount through executing agency; Therefore the present invention can monitor the oil reservoir situation in real time; According to the actual conditions of oil reservoir, realize the automatic control of separated-zone water infection oil field, for the oil reservoir dynamic analog provides foundation; Further improve the dynamic qualification rate of water filling and transfer efficient, improve field output, improve waterflood recovery efficiency factor thereby continue stable yields with surveying.
Particularly, as shown in Figure 1, in this example, said housing unit comprises housing, and the sensor support base 15 and plug 20 that are connected the housing lower end.Consider the compact conformation rational deployment, battery pack 4, omnidirectional antenna 5, control circuit 6, executing agency and water nozzle from top to bottom are being set in the said housing in order.Be respectively equipped with the first flow 24 and second runner 23 that are connected in said sensor support base 15 and the said plug 20; Be provided with the water inlet 26 that is connected with said first flow 24 in the said sensor support base 15; Be provided with the weep hole 22 that is connected with said second runner 23 in the said plug 20; Current flow into water inlet 26 by filter screen 25, through first flow 24, second runner 23 to the weep hole 22.For the foreign material in the filtered water, the corresponding said water inlet of said housing 26 places are provided with filter screen 25, have improved the quality of water filling.In order to detect water injection rate, this example is preferred, and said flow transmitter 16 is arranged in the said first flow 24, and flow transmitter 16 is arranged on the below of water inlet 26, therefore can monitor injection flow accurately.Said pressure sensor 17 is located in the said sensor support base 15 through sealed support 18; Be provided with the pressure that is communicated with said pressure sensor 17 in the said plug 20 and draw hole 19; In this example, pressure sensor 17 is located at the below of flow transmitter 16, can accurately detect the pressure behind the water nozzle.
The inventor finds that injector of the prior art only has water-filling function, does not have the quantitative injection function in realizing process of the present invention.
Particularly, as shown in Figure 1, more reasonable in order to make structure in this example, said executing agency is located between said housing and the said sensor support base 15.In order to overcome the defective that can not realize quantitative injection, realize quantitative injection, the present invention has adopted driven by motor to carry out bar 12; The motion of promotion water nozzle, and then the structure of control water nozzle aperture detect injection flow with flow transmitter 16; And the formation closed-loop control, can accurately adjust the size of flow.During practical implementation, executing agency can also adopt the mechanism that is made up of spring and execution bar 12.
Particularly, in this example, said executing agency comprises reducing motor 7, the execution bar 12 that links to each other with the output shaft of said reducing motor 7, and the lower end water nozzle of being located at said execution bar 12.Said water nozzle comprises the water nozzle cover of being located in order on the said execution bar 12 13 and water nozzle seat 14 from top to bottom.Overlap then swivel nut 9 and bearing support 8 on the output shaft of said reducing motor 7 from the inside to the outside in order; Be provided with steel ball 28 between said swivel nut 9 and the said bearing support 8; Said execution bar 12 is followed support set 11 with said swivel nut 9 outer cover; Said support set 11 is followed gland 27 with the outer cover of said bearing support 8, and the upper end of said execution bar 12 is provided with guide pin 10.Through swivel nut 9, guide pin 10 and execution bar 12 rotatablely moving of reducing motor 7 become rectilinear motion, water nozzle cover 13 is moved up and down in runner, realize the aperture size adjustment of water nozzle, realize the adjustment of injection allocation amount.
Further, as shown in Figure 1, the upper end of said housing is connected with fishing head 2, and shear pin 1 is housed in the fishing head 2.When battery pack 4 electric weight of device are not enough, during warning, can be lowered to pulling and running tool, catch fishing head 2, realize pulling,, ground puts into the appointment interval once more after changing battery, work on, made things convenient for operation.
Further; As shown in Figure 1; In order to guarantee the sealing of whole device; Said fishing head 2 and the junction of said housing, said omnidirectional antenna 5 and the junction of said housing, said sensor support base 15 and said housing junction and said sensor support base 15 and said plug 20 junctions, the flexible sealing structure that is respectively equipped with.In this example, said flexible sealing structure is an O RunddichtringO 21.During practical implementation, during said flexible sealing structure practical implementation, said flexible sealing structure can also be rubber sheet gasket 3 or cushion block.
Further, as shown in Figure 1, be provided with flexible pad 3 between said fishing head 2 and the said battery pack 4, increased the shock-absorbing capacity of device.In this example, flexible pad 3 is preferably teflon gasket.
The inventor finds existing omnidirectional antenna in realizing process of the present invention, can not be under down-hole high pressure well liquid steady operation, and can't overcome the shielding problem of omnidirectional antenna shell.
For solve existing omnidirectional antenna can't be under down-hole high pressure stable high voltage well liquid the problem of steady operation, particularly, shown in Fig. 2 a, in this example, said omnidirectional antenna 5 comprises antenna housing 5.1, coaxial cable 5.2 and loaded antenna 5.6.Said coaxial cable 5.2 and said loaded antenna 5.6 are located in the said antenna housing 5.1; Heart yearn 5.5 in the said coaxial cable 5.2 links to each other with said loaded antenna 5.6; Loaded antenna 5.6 forms resonant tank with coaxial cable 5.2, increases the radianting capacity of omnidirectional antenna 5 (referring to Fig. 1).Said coaxial cable 5.2 is provided with the rigid seal assembly with said antenna housing 5.1 junctions, make omnidirectional antenna 5 (referring to Fig. 1) can be under the water injection well hyperbaric environment steady operation.In this example, said rigid seal assembly is cutting ferrule 5.4 and the pressure cap 5.3 that is socketed on the said coaxial cable 5.2.For shell solves the shielding problem, the position of corresponding said loaded antenna 5.6 is provided with radiating aperture 5.8 on the said antenna housing 5.1, also is provided with installing hole 5.7 (referring to Fig. 2 b) on the said antenna housing 5.1.In this example, be provided with an installing hole 5.7 (referring to Fig. 2 b) and two radiating apertures 5.8 formation electromagenetic wave radiation passages around the antenna housing 5.1, realize electromagnetic omnidirectional radiation.Fill with resin in space between loaded antenna 5.6 and installing hole 5.7 (referring to Fig. 2 b) and the radiating aperture 5.8, separates with the ambient water medium and realize sealing.
The inventor is in realizing process of the present invention; Though find to exist on the market at present the flow transmitter 16 of various ways, as utilize the flow transmitter of the measurement of methods such as vortex street frequency measurement, differential pressure measurement, electromagnetic flow-measurement, temperature flow measurement, because the mounting condition that they have requires height; The flow meter that has is not suitable under hyperbaric environment, using; The volume that has is big, is difficult in the down-hole install, so the existing sensors ubiquity; Can't in device tight space according to the invention, install, can't satisfy the defective of the required precision of down-hole high pressure environment down-off measurement.
Particularly, in order to overcome above-mentioned defective, the inventor has designed miniature flow transmitter, and is as shown in Figure 3, and said flow transmitter comprises sensor housing 16.2, is provided with the fluid course 16.13 of perforation in the said sensor housing 16.2.Be provided with target sheet 16.5 in the said fluid course 16.13.Corresponding said target sheet 16.5 places in the said sensor housing 16.2; Be fixed with sensor base 16.6; In this example, sensor base 16.6 is welded on the sensor housing 16.2, and locatees through pin 16.3 between sensor base 16.6 and the sensor housing 16.2.Hollow target bar 16.9 is set in the said sensor base 16.6, and through being welded to connect, and an end of said hollow target bar 16.9 inserts in the said target sheet 16.5 between sensor base 16.6 and the hollow target bar 16.9.Solid target bar 16.8 is inserted at the center of said hollow target bar 16.9, and the other end of said solid target bar 16.8 stretches out said hollow target bar 16.9.The external part cover of said solid target bar 16.8 is eddy current target 16.10 then, and the position of corresponding said eddy current target 16.10 in the said sensor housing 16.2 is provided with electric whirlpool probe and electronics storehouse 16.12.In this example, eddy current probe 16.4 is fixed on the sensor housing 16.2 through probe base 16.7 by two screws 16.11.Install for ease, be provided with plug 16.1 with said sensor base 16.6 corresponding positions in the said sensor housing 16.2, be provided with in the plug 16.1 and said fluid course 16.13 flow direction and the consistent runners of width.
Because target sheet 16.5 is a liquid flow sensitivity testing element; When fluid course 16.13 has current out-of-date, under the effect of current, 16.5 distortion of target sheet also drive hollow target bar 16.9 generation distortion; Distortion is transferred to electronics storehouse 16.12 through solid target bar 16.8 with eddy current target 16.10; Detect by eddy current probe 16.4,, measure flow through the relation between flow and the displacement.
Flow transmitter according to the invention can be installed in the tight space in the first flow of said sensor support base, and through test, flow transmitter according to the invention can be realized the accurate measurement of flow under hyperbaric environment.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. water distribution control device under the intelligence well; It is characterized in that; Said device comprises battery pack, omnidirectional antenna, control circuit, water nozzle, executing agency, temperature pick up, pressure sensor and the flow transmitter of being located in the housing unit; Wherein, said battery pack is used for to said control circuit and executing agency power supply being provided; Said omnidirectional antenna is used for the reception and the emission of wireless signal, realizes the reception of downhole data transmission and Ground Control instruction; Said control circuit is used to control said executing agency, said temperature pick up, said pressure sensor and the action of said flow transmitter; Said executing agency is used to drive said water nozzle and moves up and down, and adjusts described openings of sizes, realizes the adjusting of injection allocation amount; Said temperature pick up, said pressure sensor and said flow transmitter are respectively applied for the detection of reservoir temperature, formation pressure and the water nozzle flow of said down-hole.
2. device as claimed in claim 1; It is characterized in that; Said housing unit comprises housing, and the sensor support base and the plug that are connected the housing lower end, and battery pack, omnidirectional antenna, control circuit, executing agency and water nozzle from top to bottom are being set in the said housing in order; Be respectively equipped with the first flow and second runner that are connected in said sensor support base and the said plug; Be provided with the water inlet that is connected with said first flow in the said sensor support base, be provided with the weep hole that is connected with said second runner in the said plug, said flow transmitter is arranged in the said first flow; Said pressure sensor is located in the said sensor support base, is provided with the pressure that is communicated with said pressure sensor in the said plug and draws the hole.
3. device as claimed in claim 2 is characterized in that, said executing agency is located between said housing and the said sensor support base; Said executing agency comprises reducing motor; The execution bar that links to each other with the output shaft of said reducing motor, and the lower end water nozzle of being located at said execution bar overlap then swivel nut and bearing support from the inside to the outside in order on the output shaft of said reducing motor; Be provided with steel ball between said swivel nut and the said bearing support; Said execution bar and said swivel nut outer cover are followed support set, and the outer cover of said support set and said bearing support is followed gland, and the upper end of said execution bar is provided with guide pin.
4. device as claimed in claim 3 is characterized in that, said water nozzle comprises water nozzle cover and the water nozzle seat of being located in order on the said execution bar from top to bottom.
5. like the described device of each claim of claim 2-4, it is characterized in that the corresponding said water inlet of said housing is provided with filter screen.
6. like the described device of each claim of claim 1-4; It is characterized in that; Said omnidirectional antenna comprises antenna housing, coaxial cable and loaded antenna; Said coaxial cable and said loaded antenna are located in the said antenna housing, and said coaxial cable and said antenna housing junction are provided with the rigid seal assembly, and said rigid seal assembly is cutting ferrule and the pressure cap that is socketed on the said coaxial cable; Heart yearn in the said coaxial cable links to each other with said loaded antenna, and the position of corresponding said loaded antenna is provided with radiating aperture on the said antenna housing.
7. like the described device of each claim of claim 1-4, it is characterized in that said flow transmitter comprises sensor housing; Be provided with the fluid course of perforation in the said sensor housing, be provided with the target sheet in the said fluid course, corresponding said target sheet place in the said sensor housing; Be fixed with sensor base, hollow target bar is set in the said sensor base, an end of said hollow target bar inserts in the said target sheet; And solid target bar is inserted at the center of said hollow target bar; That end cover that stretches out said hollow target bar of said solid target bar is the eddy current target then, and the position of corresponding said eddy current target in the said sensor housing is provided with electric whirlpool probe and electronics storehouse.
8. like the described device of each claim of claim 2-4, it is characterized in that the upper end of said housing is connected with fishing head.
9. like the described device of claim 8 claim; It is characterized in that; The junction of the junction of said fishing head and said housing, said omnidirectional antenna and said housing, said sensor support base and said housing junction and said sensor support base and said plug junction, the flexible sealing structure that is respectively equipped with.
10. device as claimed in claim 9 is characterized in that, is provided with flexible pad between said fishing head and the said battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010293316.6A CN102418504B (en) | 2010-09-27 | 2010-09-27 | Intelligent underground water distribution control device |
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|---|---|---|---|
| CN201010293316.6A CN102418504B (en) | 2010-09-27 | 2010-09-27 | Intelligent underground water distribution control device |
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| CN102418504A true CN102418504A (en) | 2012-04-18 |
| CN102418504B CN102418504B (en) | 2014-06-04 |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075136A (en) * | 2013-01-10 | 2013-05-01 | 中国海洋石油总公司 | Control device for underground layered flow rate of water injection well |
| CN103993864A (en) * | 2013-02-20 | 2014-08-20 | 大庆国电海天科技有限公司 | Underground electric adjustable water injection nozzle of oil field water injection well |
| CN104763414A (en) * | 2015-04-01 | 2015-07-08 | 阜新晟宇华联石油科技有限公司 | Oil gas well wireless measuring-adjusting control system |
| CN105257267A (en) * | 2015-10-30 | 2016-01-20 | 中国石油天然气股份有限公司 | Water nozzle for water injection well of oil field |
| CN105464642A (en) * | 2015-12-16 | 2016-04-06 | 中国石油天然气股份有限公司 | Flow monitoring device of intelligent water distributor of integrated vortex shedding flowmeter |
| CN106437643A (en) * | 2016-09-06 | 2017-02-22 | 中国石油天然气股份有限公司 | Intelligent injection allocation device for wheel injection |
| CN106761609A (en) * | 2015-11-24 | 2017-05-31 | 中国石油化工股份有限公司 | The underground turbine generation automatically controlled water injection string of pressure transmission signal |
| CN109236251A (en) * | 2018-08-14 | 2019-01-18 | 中国海洋石油集团有限公司 | Remote control seperated layer water injection system |
| CN109441434A (en) * | 2018-12-19 | 2019-03-08 | 常州艾控智能仪表有限公司 | Multi-parameter measuring systems under photoelectricity combined shaft |
| CN109958412A (en) * | 2018-12-25 | 2019-07-02 | 贵州航天凯山石油仪器有限公司 | A kind of underground relaying power supply unit |
| CN110940430A (en) * | 2019-12-10 | 2020-03-31 | 国网上海市电力公司 | Wireless temperature sensor suitable for underwater work |
| CN110952965A (en) * | 2020-01-02 | 2020-04-03 | 中国石油天然气股份有限公司 | Underground separate-layer water injection process system and method |
| US10890059B2 (en) | 2018-02-07 | 2021-01-12 | Petrochina Company Limited | Layered water injection system and layered water injection method |
| CN118088134A (en) * | 2024-04-23 | 2024-05-28 | 西安思坦仪器股份有限公司 | Water nozzle of intelligent separate injection system for oil field |
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| CN110940430A (en) * | 2019-12-10 | 2020-03-31 | 国网上海市电力公司 | Wireless temperature sensor suitable for underwater work |
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| CN118088134A (en) * | 2024-04-23 | 2024-05-28 | 西安思坦仪器股份有限公司 | Water nozzle of intelligent separate injection system for oil field |
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