CN208950573U - A kind of oil well continuous metering device and well recovery metering system - Google Patents
A kind of oil well continuous metering device and well recovery metering system Download PDFInfo
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- CN208950573U CN208950573U CN201821755462.4U CN201821755462U CN208950573U CN 208950573 U CN208950573 U CN 208950573U CN 201821755462 U CN201821755462 U CN 201821755462U CN 208950573 U CN208950573 U CN 208950573U
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- 239000003129 oil well Substances 0.000 title claims abstract description 41
- 238000011084 recovery Methods 0.000 title abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 85
- 230000002457 bidirectional effect Effects 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 abstract description 13
- 239000012530 fluid Substances 0.000 abstract description 6
- 230000008676 import Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 23
- 239000007789 gas Substances 0.000 description 18
- 238000005259 measurement Methods 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The utility model relates to oil well metering device field, a kind of oil well continuous metering device and well recovery metering system are provided.The oil well continuous metering device, it includes the first separator, second separator and balance pipe for being connected to the first separator and the second separator, the first fluid column that both ends are respectively communicated to the first separator is provided on first separator, it is installed on the first differential pressure pick-up of the first fluid column, first inlet and the first liquid outlet, the second fluid column that both ends are respectively communicated to the second separator is provided on second separator, it is installed on the second differential pressure pick-up of the second fluid column, second inlet and the second liquid outlet, first inlet and the second inlet are connected to import triple valve, first liquid outlet and the second liquid outlet are connected to outlet triple valve.The fixation and connection of first differential pressure pick-up and the second differential pressure pick-up are to the no any influence of the weighing of metering device.In addition, the well recovery metering system is easily installed, weighing accuracy is high.
Description
Technical Field
The utility model relates to an oil well metering device field particularly, relates to an oil well continuous metering device and oil well oil recovery measurement system.
Background
In the prior art, an oil well metering device is provided with two symmetrical separators, oil inlets of the two separators are arranged at the upper part and are connected with a single well oil inlet pipeline through an electric three-way valve; the outlets of the two separators are arranged at the lower part and are connected with an oil collecting pipeline through an electric three-way valve; the top parts of the two separators are provided with a balance pipe, the upper part of the interface of the balance pipe is provided with a safety valve, the lower bottom part of the interface of the balance pipe is provided with a weighing sensor, and the middle part of the interface of the balance pipe is provided with a magnetic turning plate liquid level meter; the electric three-way valve, the magnetic turning plate remote transmission liquid level meter and the weighing sensor respectively transmit switch position signals, liquid level signals and weight signals to the PCL control display to control the single metering or simultaneous metering of the two separators and calculate the oil quantity, an oil inlet valve is arranged on a pipeline of the single-well oil inlet electric three-way valve, a filter is arranged between the oil inlet valve and the electric three-way valve, an oil outlet valve is arranged on an oil outlet pipeline of the separators, and a bypass valve is arranged on a bypass pipe of the oil inlet valve and the oil outlet valve.
The prior art solution is to use a weighing sensor to meter the media, the weighing sensor being mounted at the bottom of the separator. The separator needs to be fixed on a platform during normal operation, so the fastening degree of the separator can influence the metering precision of the weighing sensor; meanwhile, the double separators are connected by flow pipelines, and the pipelines have supporting effect on the separators and also have bad influence on the metering precision.
SUMMERY OF THE UTILITY MODEL
The utility model aims at, including providing an oil well continuous metering device for example, it can utilize differential pressure sensor to measure the pressure that the interior liquid column of separator produced to obtain intraductal liquid mass, equipment is fixed and the flow is connected and is weighed not have any influence to the device.
The utility model discloses an aim at still including providing one kind and oil well oil recovery measurement system, its installation of being convenient for, the accuracy nature of weighing is high.
In order to realize at least one of the above purposes, the embodiment of the present invention adopts the following technical solutions:
a continuous metering device for an oil well comprises a first separator, a second separator and a balance pipe for communicating the first separator with the second separator, wherein the first separator is provided with a first liquid column, a first differential pressure sensor, a first liquid inlet and a first liquid outlet; the first liquid inlet and the second liquid inlet are communicated with the inlet three-way valve, and the first liquid outlet and the second liquid outlet are communicated with the outlet three-way valve.
Optionally, in a preferred embodiment of the present invention, the first liquid column is connected to a side wall of the first separator, and the second liquid column is connected to a side wall of the second separator.
Optionally, in a preferred embodiment of the present invention, the inlet three-way valve and the outlet three-way valve are pneumatic three-way valves.
Optionally, in a preferred embodiment of the present invention, the balance pipe is located above the first separator and the second separator and is respectively communicated with the top ends of the first separator and the second separator, one end of the balance pipe is communicated with one end of the first liquid column far away from the bottom end of the first separator, and the other end of the balance pipe is communicated with one end of the second liquid column far away from the bottom end of the second separator.
Optionally, in a preferred embodiment of the present invention, the balance pipe is provided with an orifice flowmeter for measuring a gas flow rate.
Optionally, in a preferred embodiment of the present invention, the orifice flowmeter is a bidirectional orifice flowmeter.
Optionally, in a preferred embodiment of the present invention, the oil well continuous metering device further includes a temperature sensor and a pressure sensor, and the temperature sensor and the pressure sensor are disposed on the pipeline of the inlet three-way valve, or; the temperature sensor and the pressure sensor are arranged on the balance pipe and are positioned on two sides of the orifice plate flowmeter.
Optionally, in a preferred embodiment of the present invention, the oil well continuous metering device further comprises a first densitometer for measuring the density of the medium in the first separator and a second densitometer for measuring the density of the medium in the second separator, the first densitometer being connected to the first separator, and the second densitometer being connected to the second separator.
Optionally, in the preferred embodiment of the present invention, the oil well continuous metering device further comprises an intelligent control system, and the intelligent control system is respectively communicated with the inlet three-way valve, the outlet three-way valve, the first differential pressure sensor and the second differential pressure sensor.
An oil well oil extraction metering system comprises an oil extraction device and the oil well continuous metering device which are matched for use.
The embodiment of the utility model provides an advantageous effect for example includes: the embodiment of the utility model provides an oil well continuous metering device realizes the survey to the pressure in first liquid column and the second liquid column through above-mentioned first differential pressure sensor and second differential pressure sensor to the liquid quality in first separator of pressure determination through the survey and the second separator. Since the first and second differential pressure sensors are connected to the side walls of the first and second separators in the present application, the fixation and connection of the first and second differential pressure sensors has no effect on the weighing of the well continuity measuring device. Furthermore, the embodiment of the utility model provides a still provide an oil well oil recovery measurement system, its installation of being convenient for, the accuracy nature of weighing is high.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a first connection mode of an oil well continuous metering device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second connection mode of the oil well continuous metering device provided by the embodiment of the invention;
FIG. 3 is a schematic structural diagram of a mechanism for increasing the flow rate of measurement gas and comprehensive water content in the case of a first connection mode of an oil well continuous metering device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a mechanism for increasing the flow rate of measurement gas and comprehensive water content in the case of the second connection mode of the oil well continuous metering device provided by the embodiment of the invention.
Icon: 100-oil well continuous metering device; 110-a first separator; 111-a first liquid column; 112-a first differential pressure sensor; 113-a first inlet; 114-a first liquid outlet; 115-a first densitometer; 120-a second separator; 121-a second liquid column; 122-a second differential pressure sensor; 123-a second liquid inlet; 124-a second liquid outlet; 125-a second densitometer; 130-a balance tube; 131-orifice plate flow meter; 132-a temperature sensor; 133-a pressure sensor; 140-inlet three-way valve; 150-outlet three-way valve; 160-Intelligent control System.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are conventionally placed in use, or the position or positional relationship which the skilled person conventionally understand, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific position, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
Referring to fig. 1 and 2, the present embodiment provides a continuous oil well metering device 100, which includes a first separator 110, a second separator 120, a balance pipe 130 for communicating the first separator 110 and the second separator 120, an inlet three-way valve 140, and an outlet three-way valve 150.
The first separator 110 is provided with a first liquid column 111, a first differential pressure sensor 112, a first liquid inlet 113 and a first liquid outlet 114, two ends of the first liquid column 111 are respectively communicated to the top end and the bottom end of the first separator 110, and the first differential pressure sensor 112 is installed on the first liquid column 111. First inlet port 113 communicates with inlet three-way valve 140, and first outlet port 114 communicates with outlet three-way valve 150. In this embodiment, the pressure generated by the first liquid column 111 in the first separator 110 is measured by the first differential pressure sensor 112, so as to obtain the liquid mass in the first separator 110, and the first liquid column 111 is connected to the sidewall of the first separator 110 (as shown in fig. 2).
The second separator 120 is provided with a second liquid column 121, a second differential pressure sensor 122, a second liquid inlet 123 and a second liquid outlet 124, two ends of the second liquid column 121 are respectively communicated to the top end and the bottom end of the second separator 120, and the second differential pressure sensor 122 is installed on the second liquid column 121. Second inlet port 123 communicates with inlet three-way valve 140, and second outlet port 124 communicates with outlet three-way valve 150. In this embodiment, a second liquid column 121 is connected to the sidewall of the second separator 120. Similarly, in the present embodiment, the second differential pressure sensor 122 is used to measure the pressure generated by the second liquid column 121 in the second separator 120, so as to obtain the liquid mass in the second separator 120, and the second liquid column 121 is connected to the sidewall of the second separator 120 (as shown in fig. 2).
Further, in this embodiment, the inlet three-way valve 140 and the outlet three-way valve 150 are both pneumatic three-way valves. The prior art scheme uses an electric three-way valve when switching the operation of the double tanks. Because the electric three-way valve can have a period of two-way conduction in the switching process, the measured medium can enter the two separators at the same time, so that the separator which performs metering at the moment can leak part of the medium, and the execution period of the electric three-way valve is about 30 seconds, so that the metering error is increased. And the pneumatic three-way valve is adopted in the application, the switching speed is high, about 3-5 seconds, the two-way conduction time of the pneumatic three-way valve is extremely short, and the improvement of the liquid quantity metering precision is facilitated.
Wherein the liquid amount metering principle is as follows:
the measured medium is introduced into the metering device and the inlet three-way valve 140 and the outlet three-way valve 150 are commanded according to the detected liquid level conditions of the first separator 110 and the second separator 120. When the inlet three-way valve 140 is conducted to the first separator 110 and the outlet three-way valve 150 is conducted to the second separator 120 under the control of the control system, the liquid level in the first separator 110 begins to rise, the natural gas enters the second separator 120 and presses the crude oil in the second separator 120 out of the second separator 120; when the liquid level of the first separator 110 rises to a set position (based on the gas-liquid separation), the inlet three-way valve 140 is controlled to conduct the second separator 120, the outlet three-way valve 150 conducts the first separator 110, the liquid level in the second separator 120 starts to rise, and the natural gas enters the first separator 110 and presses the crude oil in the first separator 110 out of the first separator 110. During metering, the liquid levels in the first separator 110 and the second separator 120 are controlled to rise and fall by repeatedly switching the inlet three-way valve 140 and the outlet three-way valve 150, and the differential pressure between the first liquid column 111 of the first separator 110 and the second liquid column 121 of the second separator 120 is measured, so that the change in the mass of the liquid in the first separator 110 and the second separator 120 per unit time is calculated, and the well flow rate is obtained. In this way, continuous measurement of an oil well with little or no associated gas is realized by using alternate measurement of the two separators, and after the measurement work is finished, the intelligent control system 160 can accumulate the oil measuring time within the set time to convert the daily liquid production of the oil well.
The balance pipe 130 of the present embodiment may be connected to sidewalls of the first separator 110 and the second separator 120 (as shown in fig. 2) or may be connected to tops of the first separator 110 and the second separator 120 (as shown in fig. 1). In this embodiment, the balance pipe 130 is preferably located above the first separator 110 and the second separator 120 and is respectively communicated with the top ends of the first separator 110 and the second separator 120, so that the gas separated from the first separator 110 and the second separator 120 is subjected to the balance pipe 130. One end of the balance pipe 130 is communicated with one end of the first liquid column 111 far away from the bottom end of the first separator 110, and the other end of the balance pipe 130 is communicated with one end of the second liquid column 121 far away from the bottom end of the second separator 120 (as shown in fig. 1).
Referring to fig. 3 or 4, in the prior art, there is no gas metering that is commonly found in oil well metering. In the present embodiment, an orifice flowmeter 131 for measuring the gas flow rate is provided in the balance pipe 130. For metering the flow of gas through orifice plate flow meter 131. Preferably, in this embodiment, the orifice flowmeter 131 is a bidirectional orifice flowmeter 131. That is, the gas discharged from the first separator 110 is measured by the bidirectional orifice flowmeter 131 in the direction from the second separator 120 to the first separator 110, and the gas discharged from the second separator 120 is measured by the bidirectional orifice flowmeter 131 in the direction from the first separator 110 to the second separator 120, so that bidirectional measurement is performed, and the gas flow rate in the production state is obtained. In this embodiment, the switching of the bidirectional gas metering of the bidirectional orifice flowmeter 131 may be controlled by the intelligent control system 160.
Since the orifice flowmeter 131 measures the flow rate under the operating condition, in order to convert the flow rate into the flow rate under the standard condition, in this embodiment, the continuous well metering device 100 further includes a temperature sensor 132 and a pressure sensor 133, and the temperature sensor 132 and the pressure sensor 133 are disposed on the pipeline of the inlet three-way valve 140 (as shown in fig. 4), or; a temperature sensor 132 and a pressure sensor 133 are disposed on the balance tube 130 on both sides of the orifice plate flow meter 131 (shown in fig. 3). In this embodiment, the temperature sensor 132 measures the temperature of the liquid in the pipeline in the operating state, and the pressure sensor 133 measures the pressure of the liquid in the pipeline in the operating state.
The specific calculation method is as follows:
gas state equation: PV ═ nRT; and (3) conversion of working conditions and standard conditions: p1 × V1/T1 ═ P2 × V2/T2. Wherein,
p1: standard pressure, unit Kpa, is 101.325Kpa based on standard atmospheric pressure
V1: standard flow rate, unit m3/h
T1: standard temperature, unit Kelvin K, 273.15K (i.e. 0 ℃ C.)
P2: the working pressure (gauge pressure Mpa multiplied by 1000+ P) Kpa. P now: the actual atmospheric pressure on site is approximately 101.325Kpa according to the standard atmospheric pressure
V2: flow rate under working conditions
T2: and the operating temperature is equal to (actual temperature ℃ +273.15) K. And (3) temperature conversion: k ℃ + 273.1.
The gas flow under standard conditions can be calculated by substituting the flow, temperature and pressure under the operating conditions measured in this embodiment into the above formula.
Further, referring to fig. 3 or 4, the continuous well metering device 100 further includes a first densitometer 115 for measuring the density of the medium in the first separator 110 and a second densitometer 125 for measuring the density of the medium in the second separator 120, the first densitometer 115 being connected to the first separator 110, and the second densitometer 125 being connected to the second separator 120.
The prior art does not relate to the measurement of the comprehensive density and water content of the liquid, but in the embodiment, the first densimeter 115 and the second densimeter 125 are arranged to measure the comprehensive density of the liquid in the working state, and a tester can input the known oil density and water density of the tested oil well to obtain the comprehensive water content of the tested medium.
Optionally, the continuous well metering device 100 further includes an intelligent control system 160, and the intelligent control system 160 is respectively communicated with the inlet three-way valve 140, the outlet three-way valve 150, the first differential pressure sensor 112, the second differential pressure sensor 122, and the orifice flowmeter 131. The intelligent control system 160 realizes intelligent control, and has high control precision and quick response.
Furthermore, the embodiment of the utility model provides a still provide an oil well oil recovery measurement system, it is including supporting oil recovery device and the above-mentioned oil well continuous metering device 100 that uses. It is convenient for install, and the accuracy of weighing is high.
To sum up, the embodiment of the present invention provides a continuous oil well measuring device 100, which realizes the measurement of the pressure in the first fluid column 111 and the second fluid column 121 by the first differential pressure sensor 112 and the second differential pressure sensor 122, and measures the liquid quality in the first separator 110 and the second separator 120 by the measured pressure. The gas flow under the working condition is measured by the orifice plate flowmeter 131, and the temperature and the pressure under the working condition are measured by matching with the pressure sensor 133 and the temperature sensor 132, so that a tester can measure the gas flow under the standard condition according to the gas flow under the working condition and the temperature and the pressure under the working condition. In this embodiment, the first densitometer 115 and the second densitometer 125 may be used to measure the total density of the liquid, and the total water content may be calculated from the known oil density and water density. From the above, it can be seen that the continuous metering device 100 for oil wells provided by the present embodiment can realize three-phase metering (liquid mass metering, gas flow metering and metering of comprehensive water content), which supplements and improves the prior art. In addition, since the first differential pressure sensor 112 and the second differential pressure sensor 122 are connected to the side walls of the first separator 110 and the second separator 120, the fixing and the connection of the first differential pressure sensor 112 and the second differential pressure sensor 122 have no influence on the weighing of the oil well continuous metering device 100, the switching speed of the pneumatic three-way valve at the inlet and the outlet is high (about 3-5 seconds), the two-way conduction time of the three-way valve is extremely short, and the liquid amount metering precision is improved. Furthermore, the embodiment of the utility model provides a still provide an oil well oil recovery measurement system, its installation of being convenient for, the accuracy nature of weighing is high.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A continuous metering device for an oil well is characterized by comprising a first separator, a second separator and a balance pipe for communicating the first separator with the second separator, wherein the first separator is provided with a first liquid column, a first differential pressure sensor, a first liquid inlet and a first liquid outlet, the second separator is provided with a second liquid column, a second differential pressure sensor, a second liquid inlet and a second liquid outlet, two ends of the first liquid column are communicated with the top end and the bottom end of the first separator respectively, the first differential pressure sensor is mounted on the first liquid column, two ends of the second liquid column are communicated with the top end and the bottom end of the second separator respectively, and the second differential pressure sensor is mounted on the second liquid column; the first liquid inlet and the second liquid inlet are communicated with an inlet three-way valve, and the first liquid outlet and the second liquid outlet are communicated with an outlet three-way valve.
2. A well continuous metering device according to claim 1, characterized in that the first liquid column is connected to a side wall of the first separator and the second liquid column is connected to a side wall of the second separator.
3. A well continuous gauge according to claim 1, wherein the inlet three-way valve and the outlet three-way valve are both pneumatic three-way valves.
4. The continuous metering device for an oil well as claimed in claim 1, wherein the balance pipe is positioned above the first separator and the second separator and is communicated with the top ends of the first separator and the second separator, respectively, one end of the balance pipe is communicated with the end of the first liquid column far away from the bottom end of the first separator, and the other end of the balance pipe is communicated with the end of the second liquid column far away from the bottom end of the second separator.
5. The continuous metering device for oil wells according to claim 1, characterized in that an orifice plate flowmeter for measuring the gas flow rate is arranged on the balance pipe.
6. An oil well continuous metering device as claimed in claim 5, wherein the orifice flow meter is a bidirectional orifice flow meter.
7. The continuous metering device for oil wells according to claim 5, further comprising a temperature sensor and a pressure sensor, wherein the temperature sensor and the pressure sensor are disposed on the pipeline of the inlet three-way valve, or;
the temperature sensor and the pressure sensor are arranged on the balance pipe and are positioned on two sides of the orifice plate flowmeter.
8. The continuous well gauging device according to claim 1, further comprising a first densitometer for measuring the density of the medium in said first separator and a second densitometer for measuring the density of the medium in said second separator, said first densitometer being connected to said first separator and said second densitometer being connected to said second separator.
9. The continuous well metering device of claim 1, further comprising an intelligent control system in communication with the inlet three-way valve, the outlet three-way valve, the first differential pressure sensor, and the second differential pressure sensor, respectively.
10. A well production metering system comprising a production unit and a well continuous metering unit as claimed in any one of claims 1 to 9 for use therewith.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098705A (en) * | 2018-10-26 | 2018-12-28 | 胜利油田胜机石油装备有限公司 | A kind of oil well continuous metering device and well recovery metering system |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109098705A (en) * | 2018-10-26 | 2018-12-28 | 胜利油田胜机石油装备有限公司 | A kind of oil well continuous metering device and well recovery metering system |
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| CB03 | Change of inventor or designer information |
Inventor after: Jing Bing Inventor after: Shen Junfang Inventor after: Wang Guidong Inventor after: Sun Zhenhua Inventor after: Zhang Bairui Inventor after: Wang Changpeng Inventor before: Yuan Jie Inventor before: Jing Bing Inventor before: Shen Junfang Inventor before: Wang Guidong Inventor before: Sun Zhenhua Inventor before: Zhang Bairui Inventor before: Wang Changpeng |
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| CB03 | Change of inventor or designer information |