CN109946347B - Land surface wellhead oil-gas-water three-phase water content measuring device - Google Patents
Land surface wellhead oil-gas-water three-phase water content measuring device Download PDFInfo
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Abstract
The invention discloses a land surface wellhead oil-gas-water three-phase water content measuring device, which comprises: the device comprises a sleeve, an exhaust pipe, a measuring pipe and a control system; the side wall of the sleeve is communicated with an inlet pipe, a measuring pipe is arranged in the sleeve, a closed annular cavity is formed between the measuring pipe and the sleeve, the annular cavity is communicated with an exhaust pipe, and an exhaust valve exhausts gas in the annular cavity; the measuring tube comprises a mixed-phase measuring tube and an all-water measuring tube, the all-water measuring tube is provided with a water inlet hole and a first conductivity sensor, and the control system collects the output voltage of the first conductivity sensor to obtain a first voltage; the mixed-phase measuring pipe is provided with a liquid inlet hole and a second conductivity sensor, and the control system collects the output voltage of the second conductivity sensor to obtain a second voltage; and the control system determines the water content of the fluid to be measured according to the first voltage and the second voltage. The device provided by the invention can be used for measuring the water content of the land wellhead in real time, and has the advantages of simple structure, low cost and small volume.
Description
Technical Field
The invention relates to the technical field of petroleum wellhead parameter measurement, in particular to a land surface wellhead oil-gas-water three-phase water content measuring device.
Background
In oil production, a mixed fluid containing oil, gas, water and various impurities is produced from an oil well, wherein the water phase content is an important parameter for evaluating and measuring a logging profile of the oil production, and the mixed fluid plays a vital role in improving the oil and gas yield and improving the oil and gas production efficiency. At present, most of land wellhead parameter measurement depends on manual periodic sampling and assay, and the traditional method has the defects of high working strength, low efficiency, poor real-time performance, discontinuous test data, multiple influence factors and the like.
At present, foreign products have high measurement precision and wide application range, but the measurement technology is complex, the volume is large, and the manufacturing cost is high. The domestic land wellhead parameter measuring device mainly comprises a gas-liquid separation type oil-water-gas three-phase metering device of Lanzhou sea-still company and a multiphase flowmeter of the Lanzhou sea-still company. Domestic equipment development mostly uses foreign technologies as a blue book, the measurement accuracy and reliability are inferior to those of foreign products, and part of the products are still in the development and development stage.
Therefore, the field needs a measuring device which has simple structure, low cost and small volume and can measure the water content of the land wellhead in real time.
Disclosure of Invention
Aiming at the defects of the technology, the invention aims to provide the land surface wellhead oil-gas-water three-phase water content measuring device which can measure the water content of the land surface wellhead in real time and has the advantages of simple structure, low cost and small volume.
In order to achieve the purpose, the invention provides the following scheme:
the utility model provides a land face well head oil gas water three-phase moisture content measuring device, includes: the device comprises a sleeve, an exhaust pipe, a measuring pipe and a control system;
the side wall of the sleeve is communicated with an inlet pipe, the measuring pipe is arranged in the sleeve, a closed annular cavity is formed between the measuring pipe and the sleeve, and fluid to be measured enters the annular cavity through the inlet pipe; the annular cavity is communicated with the exhaust pipe, an exhaust valve is arranged in the exhaust pipe, and the exhaust valve is used for exhausting gas in the annular cavity;
the measuring tube comprises a mixed-phase measuring tube and an all-water measuring tube, and the mixed-phase measuring tube is communicated with the all-water measuring tube;
the side wall of the bottom of the total water measuring pipe is provided with a water inlet, water in the annular cavity enters the total water measuring pipe through the water inlet, the total water measuring pipe is provided with a first conductivity sensor, the first conductivity sensor is electrically connected with the control system, and the control system collects output voltage of the first conductivity sensor to obtain first voltage;
the side wall of the bottom of the mixed phase measuring pipe is provided with a liquid inlet hole, mixed phase liquid in the annular cavity enters the mixed phase measuring pipe through the liquid inlet hole, a second conductivity sensor is arranged on the mixed phase measuring pipe and electrically connected with the control system, and the control system collects output voltage of the second conductivity sensor to obtain second voltage;
and the control system determines the water content of the fluid to be measured according to the first voltage and the second voltage.
Optionally, the device further comprises an outlet pipe, the annular cavity and the outlet pipe are communicated through the exhaust pipe, and the discharged gas enters the outlet pipe;
the miscible-phase measuring pipe is communicated with the outlet pipe, and miscible-phase liquid in the miscible-phase measuring pipe flows out through the outlet pipe.
Optionally, the device further comprises a one-way valve, the one-way valve is arranged in the exhaust pipe, and gas discharged by the exhaust valve enters the outlet pipe through the one-way valve.
Optionally, the device still includes the well casing, be provided with first valve in the well casing, the well casing lateral wall is provided with liquid outlet and inlet, the liquid outlet with the inlet set up in first valve both sides, the well casing passes through in proper order liquid outlet and second valve with the inlet pipe intercommunication, the outlet pipe pass through in proper order the third valve with the inlet with the well casing intercommunication.
Optionally, the first conductivity sensor and the second conductivity sensor each include an insulating tube, and an annular measuring electrode and an annular exciting electrode mounted on an inner wall of the insulating tube.
Optionally, the control system includes a sensing excitation module, a signal processing module and a timing operation module, the sensing excitation module is configured to generate an excitation constant current source, and apply the excitation constant current source to the excitation electrode, and the signal processing module is configured to process a voltage signal of the measurement electrode; the timing working module is used for carrying out timing power supply on the first conductivity sensor and the second conductivity sensor.
Optionally, a porous pipe is arranged in the inlet pipe, and the porous pipe is used for filtering impurities in the fluid to be measured.
Optionally, at least one of the second conductivity sensors is provided.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
1. according to the invention, a first voltage of the full-water measuring area is measured through the first conductivity sensor, a second voltage of the oil-water mixed-phase area is measured through the second conductivity sensor, and the control system determines the water content of the fluid to be measured according to the collected voltage data. The device has the advantages of simple structure, low manufacturing cost and small volume, and can realize the real-time measurement of the water content of the wellhead of the land surface.
2. According to the invention, the gas in the liquid to be measured is discharged through the exhaust valve, so that the water content measurement is carried out under the oil-water two-phase condition, and the water content measurement precision is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic diagram of a principle of a land surface wellhead oil-gas-water three-phase water content measuring device according to an embodiment of the invention;
FIG. 2 is a three-dimensional perspective view of a land surface wellhead oil-gas-water three-phase water content measuring device according to an embodiment of the invention;
FIG. 3 is a left side view of an oil-gas-water three-phase water content measuring device of a land surface wellhead according to an embodiment of the invention;
FIG. 4 is a rear view of an oil-gas-water three-phase water content measuring device of a land surface wellhead according to an embodiment of the invention;
FIG. 5 is a three-dimensional perspective view of a measurement tube according to an embodiment of the invention;
fig. 6 is a three-dimensional perspective view of a conductivity sensor according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a control system according to an embodiment of the present invention.
The device comprises an inlet pipe 1, a sleeve 2, a 301 full water measuring pipe, a 302 mixed phase measuring pipe, an exhaust pipe 4, an exhaust valve 5, a 6 water inlet hole, a 7 first conductivity sensor, an 8 water inlet hole, a 9 second conductivity sensor, a 10 outlet pipe, a 11 one-way valve, a 12 well pipe, a 13 first valve, a 14 second valve, a 15 third valve, a 16 control system, a 17 lead wire device, an 18 upper computer, a 19 porous pipe, a 20 first flange, a 21 second flange, a 22 third flange, a 23 base, a 24 first lead port, a 25 insulating pipe, a 26 measuring electrode, a 27 second lead port and a 28 exciting electrode.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a land surface wellhead oil-gas-water three-phase water content measuring device which can measure the water content of a land surface wellhead in real time and has the advantages of simple structure, low cost and small volume.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a schematic diagram of a principle of a land surface wellhead oil-gas-water three-phase water content measuring device according to an embodiment of the invention, fig. 2 is a three-dimensional perspective view of the land surface wellhead oil-gas-water three-phase water content measuring device according to the embodiment of the invention, fig. 3 is a left side view of the land surface wellhead oil-gas-water three-phase water content measuring device according to the embodiment of the invention, and fig. 4 is a rear view of the land surface wellhead oil-gas-water three-phase water content measuring device according to the embodiment of the invention.
Referring to fig. 1-4, a land surface wellhead oil-gas-water three-phase water content measuring device includes: casing 2, exhaust pipe 4, measurement pipe and control system 16; the side wall of the sleeve 2 is communicated with an inlet pipe 1, the measuring pipe is arranged in the sleeve 2, a closed annular cavity is formed between the measuring pipe and the sleeve 2, and fluid to be measured enters the annular cavity through the inlet pipe 1; the annular cavity is communicated with the exhaust pipe 4, an exhaust valve 5 is arranged in the exhaust pipe 4, and the exhaust valve 5 is used for exhausting gas in the annular cavity.
Survey buret and include that the muddy phase surveys buret 302 and full water survey buret 301, the muddy phase surveys buret 302 with full water surveys buret 301 intercommunication.
Full water surveying buret 301 bottom lateral wall is provided with inlet opening 6, water in the annular cavity passes through inlet opening 6 gets into in the full water surveying buret 301, be provided with first conductance sensor 7 on the full water surveying buret 301, first conductance sensor 7 with the control system 16 electricity is connected, control system 16 is right the output voltage of first conductance sensor 7 gathers, obtains first voltage.
The lateral wall of miscible phase survey buret 302 bottom is provided with feed liquor hole 8, miscible phase liquid in the annular cavity passes through feed liquor hole 8 gets into in the miscible phase surveys buret 302, be provided with second conductance sensor 9 on the miscible phase surveys buret 302, second conductance sensor 9 with control system 16 electricity is connected, control system 16 is right the output voltage of second conductance sensor 9 gathers, obtains the second voltage.
The control system 16 determines the water cut of the fluid to be measured according to the first voltage and the second voltage.
Specifically, fig. 5 is a three-dimensional perspective view of a measuring tube according to an embodiment of the present invention, as shown in fig. 5, the real-time measurement of the moisture content according to an embodiment of the present invention is mainly performed in the measuring tube, the measuring tube includes an all-water measuring portion and a mixed-phase measuring portion, a liquid inlet hole 8 is formed on a side wall of a lower portion of the mixed-phase measuring tube 302, the all-water measuring portion is below the liquid inlet hole 8, the mixed-phase measuring portion is above the liquid inlet hole 8, the mixed-phase measuring portion is used for performing mixed-phase and all-water measurement synchronously in real time, the all-water measuring tube 301 is provided with a first conductivity sensor 7, the mixed-phase measuring tube 302 is provided with two second conductivity sensors 9, and a first lead port 24 is formed on a side wall, lines of the first conductivity sensor 7 and the second conductivity sensor 9 are connected to a control system 16 through the first.
As an embodiment of the present invention, the apparatus further includes:
an outlet pipe 10, said annular cavity and said outlet pipe 10 communicating through said exhaust pipe 4, the exhaust gas entering said outlet pipe 10; the miscible measuring tube 302 is communicated with the outlet pipe 10, and miscible liquid in the miscible measuring tube 302 flows out through the outlet pipe 10.
Specifically, 1 one end of inlet tube and 2 lateral wall welding of sleeve pipe, 2 lower extreme welding of sleeve pipe are on base 23, 2 upper ends of sleeve pipe are connected through second flange 21 and outlet pipe 10, install discharge valve 5 and lead wire ware 17 on the second flange 21, all adopt sealed threaded connection, blast pipe 4 and outlet pipe 10 welding, discharge valve 5 gas outgoing in the mixed fluid of oil gas water in the annular cavity, gas gets into outlet pipe 10 through blast pipe 4, the annular cavity is the fluid with surveying buret and provides flow path, survey buret and divide into two parts: the bottom of the total water measuring tube 301 is connected with the base 23 in a connecting mode, the upper portion of the mixed phase measuring tube 302 is welded with the second flange 21 and is communicated with the outlet pipe 10, the side wall of the bottom of the mixed phase measuring tube 302 is provided with a liquid inlet hole 8, and the liquid inlet hole 8 is used for communicating the sleeve 2 and the mixed phase measuring tube 302; the lower side wall of the total water measuring pipe 301 is provided with a circular water inlet hole 6 for ensuring the water phase update of the total water measuring area.
As an embodiment of the present invention, the apparatus further includes:
the check valve 11, the check valve 11 sets up in the blast pipe 4, the gas that discharge valve 5 discharged passes through the check valve 11 and gets into the outlet pipe 10.
Specifically, the exhaust valve 5, the one-way valve 11 and the exhaust pipe 4 are connected by threads, and the one-way valve 11 can prevent the fluid in the outlet pipe 10 from flowing into the annular cavity.
As an embodiment of the present invention, the apparatus further includes:
well casing 12, be provided with first valve 13 in the well casing 12, the 12 lateral walls of well casing are provided with liquid outlet and inlet, the liquid outlet with the inlet set up in first valve 13 both sides, well casing 12 passes through in proper order liquid outlet and second valve 14 with inlet tube 1 intercommunication, outlet pipe 10 in proper order through third valve 15 with the inlet with well casing 12 intercommunication.
Specifically, the other end of the inlet pipe 1 is welded to a first flange 20 and is communicated with a liquid outlet of the well pipe 12 through the first flange 20, and the other end of the outlet pipe 10 is welded to a third flange 22 and is communicated with a liquid inlet of the well pipe 12 through the third flange 22.
Preferably, the first conductivity sensor 7 and the second conductivity sensor 9 each comprise an insulating tube 25, and an annular measuring electrode 26 and an annular exciting electrode 28 mounted on the inner wall of the insulating tube 25.
Fig. 6 is a three-dimensional perspective view of a conductivity sensor according to an embodiment of the present invention, as shown in fig. 6, each conductivity sensor includes an insulating tube 25 having two second lead ports 27, and four annular metal electrodes mounted on the inner wall of the insulating tube 25, the insulating tube 25 is made of organic glass, and is used for preventing the metal electrodes from contacting the stainless steel wall of the measuring tube and causing short circuit, the four annular metal electrodes are embedded inside the wall of the insulating tube 25, the four annular metal electrodes are connected to the control system 16 through wires in the second lead ports 27, the four annular metal electrodes include a first excitation electrode, a second excitation electrode, a first measuring electrode and a second measuring electrode, the first excitation electrode and the second excitation electrode are used for establishing a sensitive current field, the first measuring electrode and the second measuring electrode are used for acquiring information of an internal fluid flow field, the conductivity sensor according to the embodiment of the present invention employs four annular metal electrodes, but is not limited to four ring-shaped metal electrodes, and other numbers and shapes of electrodes can be used.
Preferably, the control system 16 includes a sensing and exciting module, a signal processing module and a timing module, the sensing and exciting module is used for generating an excitation constant current source and applying the excitation constant current source to the excitation electrode 28, and the signal processing module is used for processing the voltage signal of the measuring electrode 26; the timing working module is used for timing power supply of the first conductivity sensor 7 and the second conductivity sensor 9.
Fig. 7 is a schematic structural diagram of a control system 16 according to an embodiment of the present invention, and as shown in fig. 7, the control system 16 includes: the sensor comprises a sensor excitation module, a signal processing module and a timing working module, wherein the sensor excitation module utilizes a waveform generator and an operational amplifier to generate a 20KHz alternating current constant current source so that a sensitive current field is established by an excitation electrode 28; the signal processing module comprises a signal conditioning circuit, a voltage-frequency conversion circuit and a pulse width modulation circuit, and is used for conditioning, voltage-frequency conversion, pulse width modulation and the like of the voltage signal of the measuring electrode 26; the timing working module utilizes the STM8 main controller to supply power to the conductivity sensor in a timing mode.
The control system 16 further includes a wireless transmission module, the wireless transmission module adopts a ZigBee ad hoc network to perform parameter transmission, and sends data in the STM8 main controller to the upper computer 18, and the upper computer 18 is a computer in this embodiment.
Preferably, a porous pipe 19 is arranged in the inlet pipe 1, and the porous pipe 19 is used for filtering impurities in the fluid to be measured. Specifically, porous pipe 19 accepts with inlet tube 1, and porous pipe 19 is used for the separation impurity, prevents that impurity from breaing up oil gas water mixed fluid.
Preferably, there is at least one second conductivity sensor 9.
The embodiment of the invention adopts a gravity separation method to carry out gas-liquid separation, the oil-gas-water mixed fluid is in the annular cavity, the gas floats upwards due to the density difference of the gas and the liquid, and the gas in the annular cavity is discharged by the exhaust valve 5; gas enters the outlet pipe 10 through the exhaust pipe 4, and the check valve 11 prevents the fluid in the outlet pipe 10 from flowing into the annular cavity; the gas does not pass through the water content measuring sensor, so that the water content measurement is carried out under the oil-water two-phase condition, the influence of the gas on the water content measurement is eliminated, and the water content measurement precision is improved.
The working principle is as follows:
when the water content is required to be measured, the first valve 13 of the well pipe 12 is closed, the second valve 14 of the inlet pipe 1 and the third valve 15 of the outlet pipe 10 are opened, the oil-gas-water mixed fluid in the well pipe 12 flows into the annular cavity from the inlet pipe 1, in the annular cavity, the gas can float upwards due to the liquid-gas density difference, the gas in the annular cavity is discharged by the exhaust valve 5, the gas enters the outlet pipe 10 through the exhaust pipe 4, the check valve 11 prevents the fluid in the outlet pipe 10 from flowing into the annular cavity, the water can be gradually separated downwards in the annular cavity due to the oil-water density difference, the oil-water mixed liquid enters the mixed phase measuring pipe 302 through the liquid inlet hole 8 on the side wall of the mixed phase measuring pipe 302, the water enters the whole water measuring pipe 301 through the water inlet hole 6 of the whole water measuring pipe 301, the water level of the whole water measuring pipe 301 rises continuously, and when the whole water measuring pipe 301 is all water, the signal processing module is used for conditioning, voltage-frequency conversion, pulse width modulation and the like of the voltage signal of the measuring electrode 26, and the output voltage of the first conductivity sensor 7 is VW(VWAfter the oil phase and the water phase are separated in the total water measuring part, the output voltage of the second conductivity sensor 9 in the mixed phase measuring area is V) when the first conductivity sensor measures the water phase and the water phase under the total water conditionm(VmWhen the oil-water two-phase fluid of the mixed-phase measurement part flows through the second conductivity sensor), the conductivity method measurement principle shows that under the condition that water is a continuous phase, the output voltage amplitude between the two measurement electrodes 26 of the conductivity sensor is inversely proportional to the conductivity of the fluid in the sensor, and the following steps are carried out:
wherein σmFor mixed phase conductivity, σWContinuous aqueous phase conductivity.
From Maxwell's formula:
namely, it is
β is the volume fraction of a continuous conductive phase in two-phase flow, and the water holding rate in oil-water two-phase flow is the volume fraction of a water phase in fluid at a certain position of a shaft, the water holding rate can be corrected into water content through flow obtained by a flowmeter, a ZigBee ad hoc network is adopted to transmit a real-time β value to the upper computer 18, and the upper computer 18 corrects a β value into the water content according to flow data obtained by the flowmeter, so that the water content of oil, gas and water three phases is obtained.
The water content measuring device provided by the embodiment of the invention has the advantages of low manufacturing cost, simple structure and small volume, can meet the requirement of real-time measurement of the water content of a land wellhead, is suitable for large-scale popularization, and can realize a digital oil field networking project integrating data acquisition, data analysis, remote monitoring and management.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. The utility model provides a land face well head oil gas water three-phase moisture content measuring device which characterized in that includes: the device comprises a sleeve (2), an exhaust pipe (4), a measuring pipe and a control system;
the side wall of the sleeve (2) is communicated with an inlet pipe (1), the measuring pipe is arranged in the sleeve (2), a closed annular cavity is formed between the measuring pipe and the sleeve (2), and fluid to be measured enters the annular cavity through the inlet pipe (1); the annular cavity is communicated with the exhaust pipe (4), an exhaust valve (5) is arranged in the exhaust pipe (4), and the exhaust valve (5) is used for exhausting gas in the annular cavity;
the measuring tube comprises a mixed-phase measuring tube (302) and a full-water measuring tube (301), and the mixed-phase measuring tube (302) is communicated with the full-water measuring tube (301);
the water-saving measuring pipe is characterized in that a water inlet hole (6) is formed in the side wall of the bottom of the full-water measuring pipe (301), water in the annular cavity enters the full-water measuring pipe (301) through the water inlet hole (6), a first conductivity sensor (7) is arranged on the full-water measuring pipe (301), the first conductivity sensor (7) is electrically connected with the control system, and the control system collects output voltage of the first conductivity sensor (7) to obtain first voltage;
the bottom side wall of the mixed-phase measuring pipe (302) is provided with a liquid inlet hole (8), mixed-phase liquid in the annular cavity enters the mixed-phase measuring pipe (302) through the liquid inlet hole (8), a second conductivity sensor (9) is arranged on the mixed-phase measuring pipe (302), the second conductivity sensor (9) is electrically connected with the control system, and the control system collects output voltage of the second conductivity sensor (9) to obtain second voltage;
and the control system determines the water content of the fluid to be measured according to the first voltage and the second voltage.
2. A land wellhead oil gas water three phase water content measuring device according to claim 1, characterized in that the device further comprises an outlet pipe (10), the annular cavity and the outlet pipe (10) are communicated through the exhaust pipe (4), and exhausted gas enters the outlet pipe (10);
the miscible-phase measuring pipe (302) is communicated with the outlet pipe (10), and miscible-phase liquid in the miscible-phase measuring pipe (302) flows out through the outlet pipe (10).
3. A land surface wellhead oil-gas-water three-phase water content measuring device according to claim 2, characterized in that the device further comprises a one-way valve (11), the one-way valve (11) is arranged in the exhaust pipe (4), and gas discharged from the exhaust valve (5) enters the outlet pipe (10) through the one-way valve (11).
4. The device of claim 2, wherein the device further comprises a well pipe (12), a first valve (13) is arranged in the well pipe (12), a liquid outlet and a liquid inlet are arranged on the side wall of the well pipe (12), the liquid outlet and the liquid inlet are arranged on two sides of the first valve (13), the well pipe (12) sequentially passes through the liquid outlet and a second valve (14) and the inlet pipe (1) are communicated, and the outlet pipe (10) sequentially passes through a third valve (15) and the liquid inlet and the well pipe (12) are communicated.
5. A land wellhead oil-gas-water three-phase water content measuring device according to claim 1, characterized in that the first conductivity sensor (7) and the second conductivity sensor (9) each comprise an insulating pipe and an annular measuring electrode and an annular exciting electrode mounted on the inner wall of the insulating pipe.
6. The land surface wellhead oil-gas-water three-phase water content measuring device as claimed in claim 5, wherein the control system comprises a sensing excitation module, a signal processing module and a timing working module, the sensing excitation module is used for generating an excitation constant current source and applying the excitation constant current source to the excitation electrode, and the signal processing module is used for processing a voltage signal of the measuring electrode; the timing working module is used for carrying out timing power supply on the first conductivity sensor (7) and the second conductivity sensor (9).
7. A land wellhead oil-gas-water three-phase water content measuring device as claimed in claim 1, characterized in that a porous pipe is arranged in the inlet pipe (1) and used for filtering impurities in the fluid to be measured.
8. A land surface wellhead oil gas water three-phase water content measuring device according to claim 1, characterized in that the second conductivity sensor (9) is at least one.
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| CN201575838U (en) * | 2010-01-12 | 2010-09-08 | 兰州科庆仪器仪表有限责任公司 | Oil, water and gas three-phase automatic separation and metering device |
| CN102505931A (en) * | 2011-11-23 | 2012-06-20 | 西安思坦仪器股份有限公司 | Gas-liquid separating and oil-water-gas three-phase flow measuring device |
| CN102758610A (en) * | 2012-07-19 | 2012-10-31 | 中国石油天然气股份有限公司 | gas-liquid separation type low-yield liquid three-phase flow measuring method |
| CN202850974U (en) * | 2012-09-20 | 2013-04-03 | 中稷油服(北京)科技有限公司 | Oil-gas-water three-phase output section logging instrument for low-yield liquid well |
| CN203374266U (en) * | 2013-05-28 | 2014-01-01 | 燕山大学 | Longitudinal multi-pole full-hole specific retention measurement conductivity sensor |
| CN105178936B (en) * | 2015-10-22 | 2017-12-15 | 锦州锦研科技有限责任公司 | The aqueous On-line Measuring Method of oil well single-well crude oil and device are realized using gas-liquid separation |
| CN107882547B (en) * | 2016-09-29 | 2023-08-04 | 中国石油化工股份有限公司 | Pipeline type high-water-content oil well liquid production three-phase metering device and method |
| CN106918606A (en) * | 2017-03-08 | 2017-07-04 | 中国石油天然气股份有限公司 | Device for reducing water content monitoring error of oil well mouth based on radio frequency method |
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