CN108051568B - Be used for online crude oil moisture content uniform cross section static measuring apparatu of oil recovery well - Google Patents
Be used for online crude oil moisture content uniform cross section static measuring apparatu of oil recovery well Download PDFInfo
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- CN108051568B CN108051568B CN201711178331.4A CN201711178331A CN108051568B CN 108051568 B CN108051568 B CN 108051568B CN 201711178331 A CN201711178331 A CN 201711178331A CN 108051568 B CN108051568 B CN 108051568B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; viscous liquids; paints; inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2835—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel
- G01N33/2847—Water in oil
Abstract
The invention discloses an online constant cross-section static measuring instrument for crude oil water content of an oil production well, wherein a measuring instrument main body comprises a constant cross-section measuring cavity, an upper end micro differential pressure sensor and a lower end micro differential pressure sensor; an inlet electric ball valve is arranged above the surface A of the uniform section measuring cavity 1, and an outlet electric ball valve is arranged below the surface A of the uniform section measuring cavity 1; an upper end micro differential pressure sensor is arranged at the center position above the surface B of the uniform section measuring cavity 1, and a lower end micro differential pressure sensor is arranged at the center position below the surface B of the uniform section measuring cavity 1. The invention can realize the accurate measurement of the water content measuring instrument through the on-line static measurement. When in measurement, the invention automatically closes the valves at the inlet and the outlet of the measuring instrument, so that the mixed phase fluid entering the measuring instrument is relatively static, thereby avoiding the influence of external pressure fluctuation on the measurement and improving the measurement precision. The invention has simple structure, accurate measurement, safety, reliability and convenient maintenance, and can meet the measurement of the water content of various oil wells.
Description
Technical Field
The invention belongs to the field of oilfield measuring equipment, and particularly relates to an online constant-section static measuring instrument for the water content of crude oil in an oil production well.
Background
In the process of crude oil exploitation, the proportion of oil and water reflects the characteristics of oil field reservoirs, is an important basis for making and adjusting exploitation schemes and optimizing production parameters, and has important significance for prolonging the service life of oil and gas wells and improving the recovery ratio. In the actual production process of an oil field, various multiphase flowmeters aiming at gas, oil and water are provided, and related patents are also provided, but in the current market, most of the multiphase flowmeters have low measurement precision, particularly the water content measurement precision, and the error reaches 20%. For many oil wells in middle and late exploitation stages, the water content of the oil wells is generally as high as 90%, so that the multiphase flowmeter with large water content measurement errors cannot meet the production requirements of oil fields.
Disclosure of Invention
In order to overcome the defect of larger measurement error of the water content of the oil well in the prior art, the invention provides an online constant-section static measuring instrument for the water content of crude oil in an oil production well.
The technical scheme of the invention is as follows
The invention relates to an online uniform-section static measuring instrument for the water content of crude oil in an oil production well, which is characterized by comprising a measuring instrument main body, an outlet electric ball valve and an inlet electric ball valve; the upper end of the measuring instrument main body is connected with the inlet electric ball valve, and the lower end of the measuring instrument main body is connected with the outlet electric ball valve; during measurement, the inlet electric ball valve and the outlet electric ball valve are closed, liquid entering the measuring instrument main body in the measuring process is in a static stable state, and the inlet electric ball valve and the outlet electric ball valve are automatically opened after the measurement is completed.
The measuring instrument main body comprises an equal-section measuring cavity, an upper end micro differential pressure sensor, a lower end micro differential pressure sensor, a valve I, a valve II and a valve III; a valve III is arranged on the upper end face of the uniform-section measuring cavity, an inlet electric ball valve is arranged above the surface A of the uniform-section measuring cavity, and an outlet electric ball valve is arranged below the surface A of the uniform-section measuring cavity; an upper end micro differential pressure sensor is arranged at the center above the surface B of the uniform cross section measuring cavity, a lower end micro differential pressure sensor is arranged at the center below the surface B of the uniform cross section measuring cavity, a valve I is arranged on the right side of the lower end surface of the uniform cross section measuring cavity, and a valve II is arranged on the left side of the lower end surface of the uniform cross section measuring cavity.
The uniform cross-section measuring cavity comprises an oil passing cavity, an auxiliary measuring cavity, an upper end cover, an inlet pipe, an inclined baffle, an L-shaped baffle, a porous plate, an outlet pipe, a left cavity lower end cover and a right cavity lower end cover. The top end in the uniform cross section measurement cavity is fixedly provided with an upper end cover, the left side in the uniform cross section measurement cavity is an auxiliary measurement cavity, the right side in the uniform cross section measurement cavity is an oil passing cavity, and the auxiliary measurement cavity is fixedly connected with the oil passing cavity. An upper convection hole groove is formed between the top end of the oil passing cavity and the auxiliary measuring cavity and the upper end cover, a lower convection hole groove is formed in the wall surface of the oil passing cavity adjacent to the auxiliary measuring cavity, the lower convection hole groove is positioned below the upper convection hole groove, and the oil passing cavity and the auxiliary measuring cavity are respectively communicated through the upper convection hole groove and the lower convection hole groove; the lower ends of the oil passing cavity and the auxiliary measuring cavity are closed. The upper end of the oil passing cavity is provided with an inlet pipe, and the lower end of the oil passing cavity is provided with an outlet pipe; an L-shaped baffle is arranged in the oil passing cavity and opposite to the inlet pipe, and the upper end of the L-shaped baffle is connected with the oil passing cavity; an inclined baffle is arranged at the lower edge of the lower convection hole groove. The upper left cavity measuring hole and the upper right cavity measuring hole are respectively arranged at the equal height positions of the upper parts of the oil passing cavity and the auxiliary measuring cavity; the upper end right cavity measuring hole is arranged at the position below the oil passing cavity inlet pipe, and the upper end left cavity measuring hole is arranged at the position below the auxiliary measuring cavity inclined baffle; and the upper end left cavity measuring hole and the upper end right cavity measuring hole are respectively communicated with two measuring ends of the upper end micro differential pressure sensor. And a perforated plate is arranged at the lower end of the oil passing cavity and is parallel and level to the lower edge of the outlet pipe, and the perforated plate is fixedly connected with the oil passing cavity. A lower end right cavity measuring hole and a lower end left cavity measuring hole are respectively formed in the equal-height positions of the lower parts of the oil passing cavity and the auxiliary measuring cavity, the lower end right cavity measuring hole is formed in the lower position of the outlet pipe, and the lower end left cavity measuring hole is formed in the lower position of the auxiliary measuring cavity; the lower end right cavity measuring hole and the lower end left cavity measuring hole are respectively communicated with two measuring ends of the lower end micro differential pressure sensor. The bottom end of the oil passing cavity is provided with a right cavity lower end cover which is connected with the valve I; and a left cavity lower end cover is installed at the bottom end of the auxiliary measurement cavity and connected with the valve II.
The height of the lower end of the L-shaped baffle is equal to that of the lower edge of the lower convection hole groove.
The cross sections of the cavities between the upper end micro differential pressure sensor and the lower end micro differential pressure sensor of the oil passing cavity are equal in area.
The invention relates to an on-line crude oil moisture content equal-section static measuring instrument for an oil production well, which is arranged in an oil well measuring center on line; during measurement, the invention automatically closes the valves at the inlet and the outlet of the measuring instrument, so that the mixed phase fluid entering the measuring instrument is relatively static, the influence of external pressure fluctuation on the measurement is avoided, and the measurement precision is improved; the invention only uses the micro differential pressure sensor to perform measurement and calculation during measurement. The invention has simple structure, accurate measurement, safety, reliability and convenient maintenance, and can meet the measurement of the water content of various oil wells.
Drawings
FIG. 1 is an overall layout diagram of the structure of the constant cross-section static measuring instrument for the water content of crude oil on line of an oil production well, which is disclosed by the invention;
FIG. 2 is an isometric view of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a sectional view A-A of FIG. 3;
in the figure, 1, an equal section measuring cavity 2, an upper end micro differential pressure sensor 3, a lower end micro differential pressure sensor 4, a valve I5, a valve II 6, an outlet electric ball valve 7, an inlet electric ball valve 8, a valve III 9, an upper end cover 10, an upper convection hole groove 11, a lower convection hole groove 12, an inclined baffle 13, an upper end left cavity measuring hole 14, an upper end right cavity measuring hole 15, a lower end right cavity measuring hole 16, a lower end left cavity measuring hole 17, a left cavity lower end cover 18, a right cavity lower end cover 19, a porous plate 20, an outlet pipe 21, an inlet pipe 22, an L-shaped baffle 23, an oil passing cavity 24, an auxiliary measuring cavity 25 and a measuring instrument main body.
Detailed Description
The present invention will be described in detail below with reference to the drawings and examples.
Example 1:
FIG. 1 is an overall layout view of an on-line crude oil water cut equal-section static measuring instrument structure for a production well according to the present invention, FIG. 2 is an isometric view of the present invention, FIG. 3 is a front view of the present invention, and FIG. 4 is a cross-sectional view A-A in FIG. 3; FIGS. 1 to 4 show examples of the present invention. The invention relates to an online crude oil water content equal-section static measuring instrument for an oil production well, which comprises a measuring instrument main body 25, an outlet electric ball valve 6 and an inlet electric ball valve 7; the upper end of the measuring instrument main body 25 is connected with the inlet electric ball valve 7, and the lower end of the measuring instrument main body 25 is connected with the outlet electric ball valve 6; during measurement, the inlet electric ball valve 7 and the outlet electric ball valve 6 are closed, liquid entering the measuring instrument main body 25 is in a static stable state during measurement, and the inlet electric ball valve 7 and the outlet electric ball valve 6 are automatically opened after measurement is completed.
The measuring instrument main body 25 comprises a uniform section measuring cavity 1, an upper end micro differential pressure sensor 2, a lower end micro differential pressure sensor 3, a valve I4, a valve II 5 and a valve III 8; a valve III 8 is arranged on the upper end face of the uniform section measuring cavity 1, an inlet electric ball valve 7 is arranged above the surface A of the uniform section measuring cavity 1, and an outlet electric ball valve 6 is arranged below the surface A of the uniform section measuring cavity 1; an upper end micro differential pressure sensor 2 is arranged at the center above the surface B of the uniform cross section measuring cavity 1, a lower end micro differential pressure sensor 3 is arranged at the center below the surface B of the uniform cross section measuring cavity 1, a valve I4 is arranged on the right side of the lower end surface of the uniform cross section measuring cavity 1, and a valve II 5 is arranged on the left side of the lower end surface of the uniform cross section measuring cavity 1.
The uniform cross section measuring cavity 1 comprises an oil passing cavity 23, an auxiliary measuring cavity 24, an upper end cover 9, an inlet pipe 21, an inclined baffle plate 12, an L-shaped baffle plate 22, a porous plate 19, an outlet pipe 20, a left cavity lower end cover 17 and a right cavity lower end cover 18. An upper end cover 9 is fixedly installed at the top end in the uniform cross section measuring cavity 1, an auxiliary measuring cavity 24 is arranged on the left side in the uniform cross section measuring cavity 1, an oil passing cavity 23 is arranged on the right side, and the auxiliary measuring cavity 24 is fixedly connected with the oil passing cavity 23. An upper convection hole groove 10 is arranged between the top ends of the oil passing cavity 23 and the auxiliary measuring cavity 24 and the upper end cover 9, a lower convection hole groove 11 is arranged on the wall surface of the oil passing cavity 23 adjacent to the auxiliary measuring cavity 24, the lower convection hole groove 11 is positioned below the upper convection hole groove 10, and the oil passing cavity 23 and the auxiliary measuring cavity 24 are respectively communicated through the upper convection hole groove 10 and the lower convection hole groove 11; the lower ends of the oil passing cavity 23 and the auxiliary measuring cavity 24 are closed. The upper end of the oil passing cavity 23 is provided with an inlet pipe 21, and the lower end is provided with an outlet pipe 20; an L-shaped baffle 22 is arranged in the oil passing cavity 23 at the position opposite to the inlet pipe 21, and the upper end of the L-shaped baffle 22 is connected with the oil passing cavity 23; an inclined baffle 12 is arranged at the lower edge of the lower convection hole groove 11, and an upper end left cavity measuring hole 13 and an upper end right cavity measuring hole 14 are respectively formed at the equal height positions of the upper parts of the oil passing cavity 23 and the auxiliary measuring cavity 24; the upper end right cavity measuring hole 14 is arranged at the position below the inlet pipe 21 of the oil passing cavity 23, and the upper end left cavity measuring hole 13 is arranged at the position below the inclined baffle 12 of the auxiliary measuring cavity 24; the upper end left cavity measuring hole 13 and the upper end right cavity measuring hole 14 are respectively communicated with two measuring ends of the upper end micro differential pressure sensor 2; and a perforated plate 19 is arranged at the lower end of the oil passing cavity 23 and is flush with the lower edge of the outlet pipe 20, and the perforated plate 19 is fixedly connected with the oil passing cavity 23. The lower end right cavity measuring hole 15 and the lower end left cavity measuring hole 16 are respectively arranged at the equal height positions of the lower parts of the oil passing cavity 23 and the auxiliary measuring cavity 24, the lower end right cavity measuring hole 15 is arranged at the lower position of the outlet pipe 20, and the lower end left cavity measuring hole 16 is arranged at the lower position of the auxiliary measuring cavity 24; the lower end right cavity measuring hole 15 and the lower end left cavity measuring hole 16 are respectively communicated with two measuring ends of the lower end micro differential pressure sensor 3. The bottom end of the oil passing cavity 23 is provided with a right cavity lower end cover 18, and the right cavity lower end cover 18 is connected with a valve I4. And a left cavity lower end cover 17 is installed at the bottom end of the auxiliary measurement cavity 24, and the left cavity lower end cover 17 is connected with the valve II 5.
The height of the lower end of the L-shaped baffle plate 22 is equal to that of the lower edge of the lower convection hole groove 11.
The cross sections of the cavities between the upper end micro differential pressure sensor 2 and the lower end micro differential pressure sensor 3 of the oil passing cavity 23 are equal in area.
The working process of the invention is as follows:
the invention relates to an on-line crude oil moisture content equal-section static measuring instrument for an oil production well, which is arranged in an oil well measuring center on line; during measurement, the invention automatically closes the valves at the inlet and the outlet of the measuring instrument, so that the mixed phase fluid entering the measuring instrument is relatively static, and the influence of external pressure fluctuation on the measurement is avoided; after the measurement is finished, the inlet electric ball valve and the outlet electric ball valve are automatically opened, the whole process is static measurement, and the measurement precision is improved.
The present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make various modifications without creative efforts from the above-described conception, and fall within the scope of the present invention.
Claims (3)
1. The utility model provides a be used for online crude oil moisture content uniform cross section static measuring apparatu of oil recovery well which characterized in that: the online crude oil water content equal-section static measuring instrument comprises a measuring instrument main body (25), an outlet electric ball valve (6) and an inlet electric ball valve (7); the upper end of the measuring instrument main body (25) is connected with the inlet electric ball valve (7), and the lower end of the measuring instrument main body (25) is connected with the outlet electric ball valve (6); during measurement, the inlet electric ball valve (7) and the outlet electric ball valve (6) are closed, liquid entering the measuring instrument main body (25) is in a static stable state during measurement, and the inlet electric ball valve (7) and the outlet electric ball valve (6) are automatically opened after the measurement is finished;
the measuring instrument main body (25) comprises a uniform-section measuring cavity (1), an upper-end micro differential pressure sensor (2), a lower-end micro differential pressure sensor (3), a valve I (4), a valve II (5) and a valve III (8); a valve III (8) is installed on the upper end face of the uniform section measuring cavity (1), an inlet electric ball valve (7) is installed above the surface A of the uniform section measuring cavity (1), and an outlet electric ball valve (6) is installed below the surface A of the uniform section measuring cavity (1); an upper end micro differential pressure sensor (2) is arranged at the center position above the surface B of the uniform cross section measuring cavity (1), a lower end micro differential pressure sensor (3) is arranged at the center position below the surface B of the uniform cross section measuring cavity (1), a valve I (4) is arranged on the right side of the lower end surface of the uniform cross section measuring cavity (1), and a valve II (5) is arranged on the left side of the lower end surface of the uniform cross section measuring cavity (1);
the uniform cross-section measuring cavity (1) comprises an oil passing cavity (23), an auxiliary measuring cavity (24), an upper end cover (9), an inlet pipe (21), an inclined baffle plate (12), an L-shaped baffle plate (22), a porous plate (19), an outlet pipe (20), a left cavity lower end cover (17) and a right cavity lower end cover (18); an upper end cover (9) is fixedly installed at the top end in the uniform cross section measuring cavity (1), an auxiliary measuring cavity (24) is arranged on the left side in the uniform cross section measuring cavity (1), an oil passing cavity (23) is arranged on the right side in the uniform cross section measuring cavity, and the auxiliary measuring cavity (24) is fixedly connected with the oil passing cavity (23); an upper convection hole groove (10) is formed between the top ends of the oil passing cavity (23) and the auxiliary measuring cavity (24) and the upper end cover (9), a lower convection hole groove (11) is formed in the wall surface of the oil passing cavity (23) adjacent to the auxiliary measuring cavity (24), the lower convection hole groove (11) is located below the upper convection hole groove (10), and the oil passing cavity (23) and the auxiliary measuring cavity (24) are communicated through the upper convection hole groove (10) and the lower convection hole groove (11) respectively; the lower ends of the oil passing cavity (23) and the auxiliary measuring cavity (24) are closed; an inlet pipe (21) is arranged at the upper end of the oil passing cavity (23), and an outlet pipe (20) is arranged at the lower end of the oil passing cavity; an L-shaped baffle plate (22) is arranged in the oil passing cavity (23) at the position opposite to the inlet pipe (21), and the upper end of the L-shaped baffle plate (22) is connected with the oil passing cavity (23); an inclined baffle (12) is arranged at the lower edge of the lower convection hole groove (11); the upper left cavity measuring hole (13) and the upper right cavity measuring hole (14) are respectively arranged at the equal height positions of the upper parts of the oil passing cavity (23) and the auxiliary measuring cavity (24); the upper end right cavity measuring hole (14) is arranged at the position below an inlet pipe (21) of the oil passing cavity (23), and the upper end left cavity measuring hole (13) is arranged at the position below an inclined baffle (12) of an auxiliary measuring cavity (24); the upper end left cavity measuring hole (13) and the upper end right cavity measuring hole (14) are respectively communicated with two measuring ends of the upper end micro differential pressure sensor (2); a perforated plate (19) is arranged at the lower end of the oil passing cavity (23) and is parallel to the lower edge of the outlet pipe (20), and the perforated plate (19) is fixedly connected with the oil passing cavity (23); a lower end right cavity measuring hole (15) and a lower end left cavity measuring hole (16) are respectively formed in the equal height positions of the lower parts of the oil passing cavity (23) and the auxiliary measuring cavity (24), the lower end right cavity measuring hole (15) is arranged at the lower position of the outlet pipe (20), and the lower end left cavity measuring hole (16) is arranged at the lower position of the auxiliary measuring cavity (24); the lower end right cavity measuring hole (15) and the lower end left cavity measuring hole (16) are respectively communicated with two measuring ends of the lower end micro differential pressure sensor (3); a right cavity lower end cover (18) is arranged at the bottom end of the oil passing cavity (23), and the right cavity lower end cover (18) is connected with the valve I (4); and a left cavity lower end cover (17) is installed at the bottom end of the auxiliary measurement cavity (24), and the left cavity lower end cover (17) is connected with the valve II (5).
2. The on-line crude oil water content equal section static measuring instrument for the oil production well according to claim 1, characterized in that: the height of the lower end of the L-shaped baffle (22) is equal to that of the lower edge of the lower convection hole groove (11).
3. The on-line crude oil water content equal section static measuring instrument for the oil production well according to claim 2, characterized in that: the cross sections of the cavities between the upper end micro differential pressure sensor (2) and the lower end micro differential pressure sensor (3) of the oil passing cavity (23) are equal in area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711178331.4A CN108051568B (en) | 2017-11-23 | 2017-11-23 | Be used for online crude oil moisture content uniform cross section static measuring apparatu of oil recovery well |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711178331.4A CN108051568B (en) | 2017-11-23 | 2017-11-23 | Be used for online crude oil moisture content uniform cross section static measuring apparatu of oil recovery well |
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| CN108051568A CN108051568A (en) | 2018-05-18 |
| CN108051568B true CN108051568B (en) | 2020-06-05 |
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| CN201711178331.4A Active CN108051568B (en) | 2017-11-23 | 2017-11-23 | Be used for online crude oil moisture content uniform cross section static measuring apparatu of oil recovery well |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110596353A (en) * | 2019-10-18 | 2019-12-20 | 杭州飞科电气有限公司 | Online measuring equipment for water content of crude oil |
| CN111119846A (en) * | 2020-01-03 | 2020-05-08 | 四川雷蒙斯科技有限公司 | Moisture content measuring instrument suitable for large-air-volume single well |
| CN113567297B (en) * | 2021-07-23 | 2023-06-27 | 四川速荣科技有限公司 | High-precision crude oil water content measuring instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101358523B (en) * | 2008-09-19 | 2011-12-28 | 大庆油田有限责任公司 | Differential pressure type flow densimeter underground |
| CN201532391U (en) * | 2009-11-10 | 2010-07-21 | 任长庆 | Measuring analyzer for water contained in crude oil |
| CN104234691B (en) * | 2014-07-24 | 2016-10-05 | 罗德全 | On-line multiphase flowmeter during a kind of high-precision real for oil field |
| CN204613144U (en) * | 2015-04-22 | 2015-09-02 | 杭州飞科电气有限公司 | Crude oil water content in-situ measurement equipment |
| CN204988392U (en) * | 2015-05-18 | 2016-01-20 | 天津瑞吉德科技有限公司 | Intelligence pressure differential - microwave formula oil gas water three -phase flowmeter |
| CN106018172B (en) * | 2016-05-24 | 2019-06-21 | 南通市飞宇石油科技开发有限公司 | A kind of device for on-line checking Water Content in Oil oil content |
| CN106323394B (en) * | 2016-10-17 | 2023-06-06 | 海默科技（集团）股份有限公司 | Positive displacement multiphase flow mass flowmeter |
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