CN108772391B - Intelligent ball receiving device and ball receiving method - Google Patents
Intelligent ball receiving device and ball receiving method Download PDFInfo
- Publication number
- CN108772391B CN108772391B CN201810634920.7A CN201810634920A CN108772391B CN 108772391 B CN108772391 B CN 108772391B CN 201810634920 A CN201810634920 A CN 201810634920A CN 108772391 B CN108772391 B CN 108772391B
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- port
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- way valve
- ball
- control box
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004891 communication Methods 0.000 claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 48
- 239000010779 crude oil Substances 0.000 claims description 14
- 239000012188 paraffin wax Substances 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 8
- 230000000007 visual effect Effects 0.000 claims description 7
- 238000012790 confirmation Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 abstract description 3
- 239000013049 sediment Substances 0.000 abstract 1
- 239000001993 wax Substances 0.000 description 4
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
- B08B9/057—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices being entrained discrete elements, e.g. balls, grinding elements, brushes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/46—Launching or retrieval of pigs or moles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2101/00—Uses or applications of pigs or moles
- F16L2101/10—Treating the inside of pipes
- F16L2101/12—Cleaning
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fats And Perfumes (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
An intelligent ball collecting device and a ball collecting method belong to the field of ball collecting devices for cleaning oil field pipeline ball throwing, and are characterized in that: comprises an electric four-port three-way valve, a cylinder body, a communication pipeline, an intelligent control box, a ball collecting groove and a monitoring upper computer; the two electric four-port three-way valves are respectively a first electric four-port three-way valve and a second electric four-port three-way valve; the first electric four-port three-way valve, the second electric four-port three-way valve and the ball receiving groove are sequentially connected; the right interfaces of the first electric four-port three-way valve and the second electric four-port three-way valve are communicated; the intelligent control box is arranged in the ball receiving groove; the monitoring upper computer and the electric four-port three-way valve are electrically connected with the intelligent control box. The intelligent control box controls the switch of the electric four-port three-way valve and the ball receiving groove to be closed, so that the ball sand is separated, the problem that the ball cannot be received automatically due to sediment blockage is fundamentally solved, the ball is received automatically in a true sense, all the previous ball receiving devices are completely replaced, the working efficiency is improved, and the labor intensity is reduced.
Description
Technical Field
The invention belongs to the field of ball collecting devices for ball throwing cleaning of oilfield pipelines, and particularly relates to an automatic timing intelligent ball collecting device and a ball collecting method.
Background
The crude oil wax of most of the oil extraction blocks in the domestic oil field is higher, the average wax content of the crude oil at the wellhead is higher, and the pipeline paraffin removal mainly adopts a manual ball throwing mode at a well site and a manual ball collecting mode at a station, and is matched with chemical adding and regular hot washing, so that the ball throwing and collecting work is complex, and the labor intensity is high.
Disclosure of Invention
The invention aims to solve the problems and provides an intelligent ball receiving device and a ball receiving method capable of realizing automatic ball receiving.
The intelligent ball collecting device comprises an electric four-port three-way valve, a cylinder, a communication pipeline, an intelligent control box, a ball collecting groove and a monitoring upper computer; the electric four-port three-way valve is provided with four interfaces, namely an upper interface, a lower interface, a left interface and a right interface; the two electric four-port three-way valves are respectively a first electric four-port three-way valve and a second electric four-port three-way valve; the first electric four-port three-way valve, the second electric four-port three-way valve and the ball receiving groove are sequentially connected; the right interfaces of the first electric four-port three-way valve and the second electric four-port three-way valve are communicated; the intelligent control box is arranged in the ball receiving groove; the monitoring upper computer and the electric four-port three-way valve are electrically connected with the intelligent control box; the right interfaces of the first electric four-port three-way valve and the second electric four-port three-way valve are respectively provided with a ball blocking net.
According to the intelligent ball collecting device, the left interface of the first electric four-port three-way valve is provided with an oil inlet connecting flange, and the right interface is provided with an oil outlet connecting flange; the lower interface of the first electric four-port three-way valve is connected with the upper interface of the second electric four-port three-way valve through a cylinder; the right interface of the second electric four-port three-way valve is connected with an oil outlet connecting flange through a communication pipeline; the lower interface of the second electric four-port three-way valve is connected with the ball receiving groove.
According to the intelligent ball collecting device, the pressure relief alarm device is arranged at the upper interface of the first electric four-port three-way valve; the pressure relief alarm device is communicated with the oil outlet connecting flange through a connecting pipeline; the pressure relief alarm device is electrically connected with the intelligent control box.
According to the intelligent ball collecting device, the left interface of the second electric four-port three-way valve is provided with the overhaul blind plate.
The intelligent ball receiving device comprises a pressure release valve, a micro switch and an audible and visual alarm which are connected in sequence.
The intelligent ball collecting device provided by the invention is characterized in that the pressure relief valve is a differential pressure type pressure relief valve.
According to the intelligent ball collecting device, an intelligent control module and a communication system are arranged in the intelligent control box, and a control panel is arranged on the surface of the control box; the control panel is provided with operation/fault indicator lights and manual, automatic, set, reset buttons and a display screen. The control panel is used for displaying the functions of the current device, such as working state, working instruction arrangement, parameter setting and the like.
The intelligent ball collecting device also comprises a heat tracing device; and the heat tracing device is connected with the intelligent control box.
The ball receiving method adopting the intelligent ball receiving device comprises the following steps:
(1) An oil inlet connecting flange and an oil outlet connecting flange which are arranged on a first electric four-port three-way valve of the intelligent ball collecting device are respectively connected with an oil pipeline;
(2) In a normal oil transportation state, the left interface and the lower interface of the first electric four-port three-way valve are communicated, and the right interface and the upper interface of the second electric four-port three-way valve are communicated; the paraffin removal ball flows into the second electric four-port three-way valve along with the crude oil along the cylinder; crude oil enters an oil pipeline along with a communication pipeline through an oil outlet connecting flange; the right interface of the second electric four-port three-way valve is provided with a ball blocking net, so that the paraffin removal ball is prevented from entering an oil pipeline along with crude oil;
(3) When receiving a ball receiving instruction, the first electric four-port three-way valve rotates clockwise for 90 degrees, the second electric four-port three-way valve rotates anticlockwise for 90 degrees, and crude oil directly enters an oil pipeline through the first electric four-port three-way valve; the wax removing ball falls into the ball collecting groove under the action of gravity; after the ball is received, the two electric four-port three-way valves are automatically reset and enter a normal oil delivery state;
(4) When the second electric four-port three-way valve is blocked by too many paraffin removal balls in the cylinder, the pressure at the front end of the system is increased, the pressure at the rear end of the system is reduced, the pressure difference pushes the one-way differential pressure type pressure release valve to be opened, the top micro switch acts, an audible and visual alarm signal is output under the control of the intelligent control box, the first electric four-port three-way valve is simultaneously controlled to rotate 90 degrees clockwise, the second electric four-port three-way valve is manually opened for ball collection after manual confirmation, the system is reset after confirmation, and the device enters a normal oil delivery state;
(5) When the ball receiving device fails or receives the ball, the intelligent control box collects the ball receiving information or failure information of the ball receiving device, and the ball receiving information or failure information is transmitted to the monitoring upper computer through the communication system after being processed, so that staff is informed of the processing; when the ambient temperature is lower than the set value, the intelligent control box automatically opens the heat tracing system for heating, and when the ambient temperature is higher than the set value, the intelligent control box automatically closes the heat tracing system.
The ball receiving method provided by the invention has the advantages that the ball receiving instruction comprises a timing instruction and a fault instruction.
According to the intelligent ball collecting device and the ball collecting method, the intelligent control box is used for controlling the switch of the electric four-port three-way valve and the ball collecting groove to be closed, so that ball sand separation is achieved, the problem that sand blocking cannot automatically collect balls is fundamentally eliminated, truly automatic ball collecting is realized, all previous ball collecting devices are completely replaced, the working efficiency is improved, and the labor intensity is reduced.
Drawings
FIG. 1 is a schematic diagram of an intelligent ball collecting device according to the present invention;
the device comprises a 1-oil inlet connecting flange, a 2-first electric four-port three-way valve, a 3-cylinder, a 4-second electric four-port three-way valve, a 5-ball collecting groove, a 6-communication pipeline, a 7-oil outlet connecting flange, an 8-overhaul blind plate, a 9-differential pressure type pressure relief valve, a 10-micro switch, an 11-audible and visual alarm, a 12-intelligent control box, a 13-monitoring upper computer and a 14-ball blocking net.
Detailed Description
The following describes the intelligent ball receiving device and the ball receiving method according to the embodiments with reference to the drawings.
Example 1
The intelligent ball collecting device disclosed by the invention, as shown in figure 1, comprises an electric four-port three-way valve, a cylinder 3, a communication pipeline 6, an intelligent control box 12, a ball collecting groove 5 and a monitoring upper computer 13; the electric four-port three-way valve is provided with four interfaces, namely an upper interface, a lower interface, a left interface and a right interface; the two electric four-port three-way valves are respectively a first electric four-port three-way valve 2 and a second electric four-port three-way valve 4; the left interface of the first electric four-port three-way valve 2 is provided with an oil inlet connecting flange 1, and the right interface is provided with an oil outlet connecting flange 7; the lower interface of the first electric four-port three-way valve 2 is connected with the upper interface of the second electric four-port three-way valve 4 through the cylinder 3; the right interface of the second electric four-port three-way valve 4 is connected with an oil outlet connecting flange 7 through a communication pipeline 6; the lower interface of the second electric four-port three-way valve 4 is connected with a ball receiving groove 5; the intelligent control box 12 is arranged in the ball receiving groove 5; the cylinder 3 refers to a vertical pipeline for ball storage, and the communication pipeline 6 refers to an oil pipeline. The monitoring upper computer 13 and the electric four-port three-way valve are electrically connected with the intelligent control box 12, an intelligent control module RTU (Super 32L 401) and a communication system (SZ 930) are arranged in the intelligent control box 12, and an intelligent control program is arranged in the intelligent control module; the right interfaces of the first electric four-port three-way valve 2 and the second electric four-port three-way valve 4 are respectively provided with a ball blocking net 14. The upper interface of the first electric four-port three-way valve 2 is provided with a pressure relief alarm device, and the pressure relief alarm device comprises a differential pressure type pressure relief valve 9 (FP 01), a microswitch 10 and an audible and visual alarm 11 which are connected in sequence; the pressure relief alarm device is communicated with the oil outlet connecting flange 7 through a connecting pipeline; the pressure relief alarm device is electrically connected with the intelligent control box 12; the left interface of the second electric four-port three-way valve 4 is provided with a maintenance blind plate 8.
The ball receiving method adopting the intelligent ball receiving device comprises the following steps:
(1) The device is arranged on an oil pipeline, and an oil inlet connecting flange 1 and an oil outlet connecting flange 7 which are arranged on a first electric four-port three-way valve 2 of the intelligent ball collecting device are respectively connected with the oil pipeline;
(2) In a normal oil transportation state, the left interface and the lower interface of the first electric four-port three-way valve 2 are communicated, and the right interface and the upper interface of the second electric four-port three-way valve 4 are communicated; the paraffin removal ball flows into the second electric four-port three-way valve 4 along with the crude oil along with the cylinder 3; crude oil enters an oil pipeline along with a communication pipeline 6 through an oil outlet connecting flange 7; the right interface of the second electric four-port three-way valve 4 is provided with a ball blocking net 14, so that the paraffin removal ball is prevented from entering an oil pipeline along with crude oil;
(3) When receiving a ball collecting instruction (at least any one of a timing instruction and a fault instruction), the first electric four-port three-way valve 2 rotates clockwise by 90 degrees, the second electric four-port three-way valve 4 rotates anticlockwise by 90 degrees, and crude oil directly enters an oil pipeline through the first electric four-port three-way valve 2; the wax-cleaning ball falls into the ball receiving groove 5 under the action of gravity; after the ball is received, the two electric four-port three-way valves are automatically reset and enter a normal oil delivery state;
(4) When the second electric four-port three-way valve 4 is blocked and filled due to excessive paraffin removal balls in the cylinder body 3, the pressure at the front end of the system is increased, the pressure at the rear end of the system is reduced, the pressure difference pushes the unidirectional differential pressure type pressure release valve 9 to be opened, the top micro switch 10 acts, an audible and visual alarm signal is output under the control of the intelligent control box 12, the first electric four-port three-way valve 2 is controlled to rotate 90 degrees clockwise, the second electric four-port three-way valve 4 is manually opened for ball collection after manual confirmation, the system is reset after confirmation, and the device enters a normal oil transportation state;
(5) When the ball receiving device fails or receives the ball, the intelligent control box 12 collects the ball receiving information or failure information of the ball receiving device, and transmits the processed ball receiving information or failure information to the monitoring upper computer 13 through the communication system to inform workers of processing; the intelligent control box 12 collects the ball receiving state and uploads the ball receiving state to the terminal of the remote monitoring upper computer 13 through the communication system, and informs workers of the previous processing of the wax-removing ball in the ball receiving groove 5 and the processing of faults, so that the automatic operation of the whole ball receiving process is realized, and the simple and convenient flow of remote monitoring and regular inspection is realized.
Example 2
On the basis of the embodiment 1, a heat tracing device is further arranged in the intelligent ball collecting device in the embodiment, and the heat tracing device is connected with the intelligent control box 12; when the ambient temperature is lower than the set value, the intelligent control box 12 automatically opens the heat tracing system for heating, and when the ambient temperature is higher than the set temperature, the heat tracing system is automatically closed, so that the wax deposition phenomenon is effectively prevented.
Claims (3)
1. An intelligent ball collecting device which is characterized in that: comprises an electric four-port three-way valve, a cylinder body (3), a communication pipeline (6), an intelligent control box (12), a ball collecting groove (5) and a monitoring upper computer (13); the electric four-port three-way valve is provided with four interfaces, namely an upper interface, a lower interface, a left interface and a right interface; the two electric four-port three-way valves are respectively a first electric four-port three-way valve (2) and a second electric four-port three-way valve (4); the first electric four-port three-way valve (2), the second electric four-port three-way valve (4) and the ball collecting groove (5) are sequentially connected; the right interfaces of the first electric four-port three-way valve (2) and the second electric four-port three-way valve (4) are communicated; the intelligent control box (12) is arranged in the ball receiving groove (5); the monitoring upper computer (13) and the electric four-port three-way valve are electrically connected with the intelligent control box (12); the right interfaces of the first electric four-port three-way valve (2) and the second electric four-port three-way valve (4) are respectively provided with a ball blocking net (14);
an oil inlet connecting flange (1) is arranged at the left interface of the first electric four-port three-way valve (2), and an oil outlet connecting flange (7) is arranged at the right interface; the lower interface of the first electric four-port three-way valve (2) is connected with the upper interface of the second electric four-port three-way valve (4) through the cylinder body (3); the right interface of the second electric four-port three-way valve (4) is connected with an oil outlet connecting flange (7) through a communication pipeline (6); the lower interface of the second electric four-port three-way valve (4) is connected with a ball receiving groove (5);
the upper interface of the first electric four-port three-way valve (2) is provided with a pressure relief alarm device; the pressure relief alarm device is communicated with the oil outlet connecting flange (7) through a connecting pipeline; the pressure relief alarm device is electrically connected with the intelligent control box (12); the pressure relief alarm device comprises a pressure relief valve, a micro switch (10) and an audible and visual alarm (11) which are connected in sequence; the pressure relief valve is a differential pressure type pressure relief valve (9);
a left interface of the second electric four-port three-way valve (4) is provided with an overhaul blind plate (8); an intelligent control module and a communication system are arranged in the intelligent control box (12), and a control panel is arranged on the surface of the control box;
the heat tracing device is also included; the heat tracing device is connected with the intelligent control box (12).
2. The ball receiving method of the intelligent ball receiving device according to claim 1, wherein: the method comprises the following steps:
(1) An oil inlet connecting flange (1) and an oil outlet connecting flange (7) which are arranged on a first electric four-port three-way valve (2) of the intelligent ball collecting device are respectively connected with an oil pipeline;
(2) In a normal oil transportation state, the left interface and the lower interface of the first electric four-port three-way valve (2) are communicated, and the right interface and the upper interface of the second electric four-port three-way valve (4) are communicated; the paraffin removal ball flows into a second electric four-port three-way valve (4) along with crude oil along the cylinder (3); crude oil enters an oil pipeline along with a communication pipeline (6) through an oil outlet connecting flange (7); the right interface of the second electric four-port three-way valve (4) is provided with a ball blocking net (14) to prevent the paraffin removal ball from entering an oil pipeline along with crude oil;
(3) When receiving a ball receiving instruction, the first electric four-port three-way valve (2) rotates 90 degrees clockwise, the second electric four-port three-way valve (4) rotates 90 degrees anticlockwise, and crude oil directly enters an oil pipeline through the first electric four-port three-way valve (2); the wax-cleaning ball falls into the ball receiving groove (5) under the action of gravity; after the ball is received, the two electric four-port three-way valves are automatically reset and enter a normal oil delivery state;
(4) When the second electric four-port three-way valve (4) is blocked by too many paraffin removal balls in the cylinder body (3), the pressure at the front end of the system is increased, the pressure at the rear end of the system is reduced, the pressure difference pushes the unidirectional differential pressure type pressure release valve (9) to be opened, the top microswitch (10) acts, an audible and visual alarm signal is output under the control of the intelligent control box (12), the first electric four-port three-way valve (2) is simultaneously controlled to rotate 90 degrees clockwise, the second electric four-port three-way valve (4) is manually opened for ball collection after manual confirmation, the system is reset after confirmation of normal operation, and the device enters a normal oil transportation state;
(5) When the ball collecting device fails or receives the ball, the intelligent control box (12) collects the ball collecting information or failure information of the ball collecting device, and the ball collecting information or failure information is transmitted to the monitoring upper computer (13) through the communication system after being processed, so as to inform workers of processing; when the ambient temperature is lower than a set value, the intelligent control box (12) automatically opens the heat tracing system for heating, and when the ambient temperature is higher than the set value, the heat tracing system is automatically closed.
3. The ball receiving method according to claim 2, wherein: the ball receiving instruction comprises a timing instruction and a fault instruction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810634920.7A CN108772391B (en) | 2018-06-20 | 2018-06-20 | Intelligent ball receiving device and ball receiving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810634920.7A CN108772391B (en) | 2018-06-20 | 2018-06-20 | Intelligent ball receiving device and ball receiving method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108772391A CN108772391A (en) | 2018-11-09 |
| CN108772391B true CN108772391B (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810634920.7A Active CN108772391B (en) | 2018-06-20 | 2018-06-20 | Intelligent ball receiving device and ball receiving method |
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| CN (1) | CN108772391B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111442154A (en) * | 2020-04-03 | 2020-07-24 | 杭州航民江东热电有限公司 | Circulating device for cleaning pipeline |
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|---|---|---|---|---|
| WO2000070251A1 (en) * | 1999-05-18 | 2000-11-23 | Xiangwei Zeng | A fluid control double position valve for pig |
| CN101524693A (en) * | 2009-04-03 | 2009-09-09 | 西安长庆科技工程有限责任公司 | Design method of timed heating ball collecting device |
| CN101549349A (en) * | 2009-05-06 | 2009-10-07 | 西安金立石油科技有限公司 | Delivery pipeline cleaning device |
| CN202185440U (en) * | 2011-06-17 | 2012-04-11 | 厦门东方腾达石化有限公司 | Pipeline cleaning ball collection device |
| CN204974638U (en) * | 2015-09-17 | 2016-01-20 | 西安希佛隆阀门有限公司 | Intelligence is received football shirt and is put |
| CN207133649U (en) * | 2017-08-14 | 2018-03-23 | 陕西安控科技有限公司 | A kind of outlying well digital monitor system in oil field |
-
2018
- 2018-06-20 CN CN201810634920.7A patent/CN108772391B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000070251A1 (en) * | 1999-05-18 | 2000-11-23 | Xiangwei Zeng | A fluid control double position valve for pig |
| CN101524693A (en) * | 2009-04-03 | 2009-09-09 | 西安长庆科技工程有限责任公司 | Design method of timed heating ball collecting device |
| CN101549349A (en) * | 2009-05-06 | 2009-10-07 | 西安金立石油科技有限公司 | Delivery pipeline cleaning device |
| CN202185440U (en) * | 2011-06-17 | 2012-04-11 | 厦门东方腾达石化有限公司 | Pipeline cleaning ball collection device |
| CN204974638U (en) * | 2015-09-17 | 2016-01-20 | 西安希佛隆阀门有限公司 | Intelligence is received football shirt and is put |
| CN207133649U (en) * | 2017-08-14 | 2018-03-23 | 陕西安控科技有限公司 | A kind of outlying well digital monitor system in oil field |
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| CN108772391A (en) | 2018-11-09 |
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Effective date of registration: 20240104 Address after: 101-10, 4th floor, building 5, yard 9, Dijin Road, Haidian District, Beijing Patentee after: BEIJING ETROL OIL AND GAS TECHNOLOGY Co.,Ltd. Address before: No.56 Jinye 1st Road, High tech Zone, Xi'an City, Shaanxi Province, 710065 Patentee before: SHAANXI ETROL TECHNOLOGIES CO.,LTD. |
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