CN111811593A - Internal flow type four-electrode electromagnetic flow instrument system for horizontal well - Google Patents
Internal flow type four-electrode electromagnetic flow instrument system for horizontal well Download PDFInfo
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- CN111811593A CN111811593A CN202010632917.9A CN202010632917A CN111811593A CN 111811593 A CN111811593 A CN 111811593A CN 202010632917 A CN202010632917 A CN 202010632917A CN 111811593 A CN111811593 A CN 111811593A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 239000012530 fluid Substances 0.000 claims abstract description 22
- 230000006698 induction Effects 0.000 claims description 17
- 239000000523 sample Substances 0.000 claims description 15
- 230000005284 excitation Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
- G01F1/58—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
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Abstract
The invention relates to the technical field of horizontal well flow, in particular to an inward-flow four-electrode electromagnetic flow instrument system for a horizontal well. The system comprises a magnetic flowmeter main body, a first electromagnetic flow sensor and a second electromagnetic flow sensor, wherein the first electromagnetic flow sensor and the second electromagnetic flow sensor are arranged at intervals and form an angle of 90 degrees with each other; a signal processing circuit board is arranged between the two electromagnetic flow sensors; be equipped with the line hole of crossing in the electromagnetic flow meter main part, the intermediate position of electromagnetic flow meter main part is equipped with fluid passage and two liquid outlets, and two liquid outlets are located fluid passage's both sides respectively to form with fluid passage respectively and predetermine the contained angle, the liquid outlet is located second electromagnetic sensor's rear side, liquid outlet position department installation electric capacity moisture content meter short circuit. The system provided by the invention can complete the real-time measurement of flow and water content in a flow concentration state, improves the logging time efficiency, increases the stability and reliability of a liquid production profile logging instrument, and has wider field adaptability.
Description
Technical Field
The invention relates to the technical field of horizontal well flow, in particular to an inward-flow four-electrode electromagnetic flow instrument system for a horizontal well.
Background
At present, two modes of a turbine flowmeter and an electromagnetic flowmeter are mainly adopted for measuring the flow of the horizontal well, the turbine flowmeter is subjected to turbine sand blocking due to sand production of the horizontal well, and the electromagnetic flowmeter is widely applied to measurement of the flow of the vertical well due to the fact that no movable part or no flow blocking element is arranged. Because of the separation of light phase and heavy phase, the horizontal well has a great difference between the flow pattern and the vertical well, and the flow pattern is divided into four types: laminar flow, corrugated laminar flow, wavy flow and annular fog flow, the liquid production of the horizontal well is generally low, the measurement of flow concentration is preferably adopted, the flow concentration is to improve the speed of the fluid, further improving the measurement precision, when the flow concentration measurement is carried out, the oil, the gas and the water flow in a layered separation way under the condition of low water phase flow, meanwhile, because of the rotation of the instrument in the horizontal well, the position of the electromagnetic induction electrode has uncertainty, if one of the measuring electrodes of the electromagnetic flow instrument is in a bubble in a high water-containing oil production well, the flow data cannot be obtained because the electrode cannot form a loop, however, if a sensing electrode is added perpendicular to the sensing electrode, the sensing electrode perpendicular to the sensing electrode is in the aqueous medium, therefore, accurate flow data of the fluid can be obtained, and the single electromagnetic flowmeter cannot accurately measure the flow of the downhole fluid to a great extent due to the special well condition and the flow property of the horizontal well.
Disclosure of Invention
Technical problem to be solved
The invention provides an inward flow type four-electrode electromagnetic flow meter system for a horizontal well, which overcomes the defect that the underground fluid cannot be effectively measured due to the adoption of a single electromagnetic flow meter in the horizontal well in the prior art.
(II) technical scheme
In order to solve the problems, the invention provides an inward flow type four-electrode electromagnetic flow meter system for a horizontal well, which is characterized by comprising an electromagnetic flow meter main body, a first electromagnetic flow sensor, a signal circuit board, a second electromagnetic flow sensor and a capacitance water content meter short circuit, wherein the first electromagnetic flow sensor is connected with the signal circuit board;
the electromagnetic flowmeter main body is provided with a first electromagnetic flow sensor and a second electromagnetic flow sensor which are arranged at intervals;
the first electromagnetic flow sensor and the second electromagnetic flow sensor are arranged at an angle of 90 degrees with each other;
a signal processing circuit board is arranged between the first electromagnetic flow sensor and the second electromagnetic sensor;
the electromagnetic flowmeter main body is provided with a wire passing hole which is sealed and insulated by a sealing plug and is used for wiring of a current collector and other sensors; the leads of the first electromagnetic flow sensor and the second electromagnetic sensor are connected to the signal processing board through the wire through holes;
the intermediate position of electromagnetic flowmeter main part is equipped with fluid passage and two liquid outlets, and two liquid outlets are located fluid passage's both sides respectively to form respectively with fluid passage and predetermine the contained angle, the liquid outlet is located second electromagnetic sensor's rear side, and the short circuit of electric capacity moisture content meter is installed to liquid outlet position department.
Preferably, the distance between two electromagnetic gauge sensors should be greater than 300mm
Preferably, the electromagnetic flowmeter sensor comprises an induction electrode, a probe main body, a magnetic pole iron core, an excitation coil, an insulating lining and an insulating sleeve; the induction electrodes and the excitation coil are distributed at 90 degrees;
two pairs of excitation coils are arranged in the vertical direction of the probe main body and surround the magnetic pole iron core, and an excitation circuit provides a magnetic field through a circuit board 5;
the probe is characterized in that an induction electrode is arranged in the horizontal direction of the probe main body, an insulating sleeve is sleeved on the outer surface of the induction electrode, and the inner layer of the probe main body is an insulating lining.
Preferably, the first and second electrodes are formed of a metal,
the circuit board comprises a magnetic field driving circuit, a flow measuring circuit, an amplifying circuit, signal filtering, A/D conversion, MCU data processing and a communication unit.
Preferably, the capacitor moisture content meter short circuit comprises a capacitor moisture content meter electrode rod, a capacitor moisture content meter electrode seat, an insulating sleeve and a locking nut;
the electrode rod of the capacitance water content meter is arranged on the electrode seat of the capacitance water content meter, and the electrode seat of the capacitance water content meter is connected with the main body of the electromagnetic flowmeter by a thread buckle; and an insulating sleeve is arranged on the electrode rod of the capacitance moisture meter, and the other end of the insulating sleeve is locked by a locking nut.
Preferably, an insulating outer cylinder is arranged outside the electromagnetic flowmeter main body.
Preferably, the electromagnetic flowmeter main body and the upper connector short joint are in threaded connection.
(III) advantageous effects
The internal flow type four-electrode electromagnetic flow instrument system for logging the liquid production profile of the horizontal well can complete real-time measurement of flow and water content in a current collecting state, improves logging timeliness, increases the stability and reliability of the liquid production profile logging instrument, and has wider field adaptability.
Drawings
Fig. 1 is a schematic structural diagram of an inward flow type four-electromagnetic flow instrument system for a horizontal well according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an electromagnetic flow sensor in an inward flow four-electromagnetic flow instrument system for horizontal wells according to an embodiment of the present invention;
fig. 3 is a circuit board structure diagram of an inward flow four-electromagnetic flow instrument system for horizontal wells according to an embodiment of the present invention;
fig. 4 is a schematic view of an installation structure of a capacitance water cut meter of an inward flow type four-electromagnetic flow instrument system for a horizontal well according to an embodiment of the present invention;
fig. 5 is a short-circuit structure diagram of a connector on an inward flow type four-electromagnetic flow instrument system for a horizontal well according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the drawings and examples.
As shown in fig. 1, the invention provides an inward flow type four-electrode electromagnetic flow meter system applied to a horizontal well, which comprises an electromagnetic flow meter main body 6, a first electromagnetic flow sensor 4, a signal circuit board 5, a second electromagnetic flow sensor 8 and a capacitance water cut meter short circuit 9;
the electromagnetic flowmeter main body 6 is provided with a first electromagnetic flow sensor 4 and a second electromagnetic flow sensor 8 which are arranged at intervals; the first electromagnetic flow sensor 4 and the second electromagnetic flow sensor 8 are arranged at an angle of 90 degrees to each other;
a signal processing circuit board is arranged between the first electromagnetic flow sensor 4 and the second electromagnetic sensor 8;
the electromagnetic flowmeter main body 6 is provided with a wire through hole 2, and the wire through hole 2 is sealed and insulated by a sealing plug and is used for wiring of a current collector and other sensors; the leads of the first electromagnetic flow sensor 4 and the second electromagnetic sensor 8 are connected to the signal processing board 5 through wire through holes;
the middle position of the electromagnetic flowmeter main body 6 is provided with a fluid channel 3, and the diameter of the fluid channel 3 is 15mm, so that the fluid can flow out conveniently. The electromagnetic flowmeter main body 6 is also provided with two liquid outlets 10, the two liquid outlets 10 are respectively positioned at two sides of the fluid channel 3 and respectively form an included angle of 30 degrees with the fluid channel, and a capacitance water content meter short circuit 9 is arranged at the position of the liquid outlet 10; an insulating outer cylinder 7 is arranged outside the electromagnetic flowmeter main body 6.
In order to avoid mutual interference between the two electromagnetic flowmeter sensors, the two electromagnetic flowmeter sensors need to be separated by a distance, the distance is utilized to install the circuit board of the electromagnetic flowmeter, the nearby processing of signals is facilitated, the interference is relieved, and the circuit board is installed between the two flowmeter sensors, so that the debugging is convenient and the structure is more compact. Preferably, the distance between the two electromagnetic gauge sensors should be greater than 300 mm.
As shown in figure 2, the electromagnetic flowmeter sensor comprises an induction electrode 4-1, a probe body 4-2, a magnetic pole iron core 4-3, an excitation coil 4-4, an insulating lining 4-5 and an insulating sleeve 4-6.
Two pairs of excitation coils 4-4 are arranged in the vertical direction of the probe main body 4-2, surround the magnetic pole iron core 4-3 and provide a magnetic field through an excitation circuit of the circuit board 5, an induction electrode 4-1 is arranged in the horizontal direction of the probe main body 4-2, an insulation sleeve 4-6 is arranged on the induction electrode 4-1, so that the induction electrode 4-1 is well insulated when fluid passes through the induction electrode 4-1, and the innermost layer of the probe main body 4-2 is an insulation lining 4-5, so that the insulation of the probe main body 4-2 is ensured. The induction electrode 4-1 and the excitation coil 4-4 are distributed at 90 degrees, so that the flow can be conveniently detected. The two excitation coils 4-4 and the two induction electrodes 4-1 are connected to the circuit board 5 through the wire passing holes 2, the wire passing holes 2 are in insulated connection through sealing plugs, and a power supply line of the current collector is also connected to the circuit board 5 through the wire passing holes 2, so that the control of the current collector is realized.
As shown in fig. 3, the signal circuit board includes a magnetic field driving circuit, a flow measuring circuit, an amplifying circuit, a signal filtering, an a/D conversion, an MCU data processing, and a communication unit. The drive circuit provides magnetic field for the exciting coil 4-4, the original signal of the induction electrode 4-1 is amplified, filtered, A/D converted, processed by the single chip computer, and then processed by ground communication and decoded to obtain flow signal.
As shown in figure 4, the capacitance water content meter short circuit 9 is composed of a capacitance water content meter electrode rod 9-4, a capacitance water content meter electrode seat 9-3, an insulating sleeve 9-2 and a locking nut 9-1. The electrode rod of the capacitance water content meter is arranged on the electrode seat of the capacitance water content meter, and the electrode seat of the capacitance water content meter is connected with the main body of the electromagnetic flowmeter by a thread buckle; and an insulating sleeve is arranged on the electrode rod of the capacitance moisture meter, and the other end of the insulating sleeve is locked by a locking nut.
As shown in fig. 5, the upper connector short circuit 11 is composed of a sealing plug 11-1, a thread buckle connection 11-2 and a disc type plug hole seat with sealing plug 11-3, and the upper connector short circuit 11 is in threaded connection with the electromagnetic flowmeter main body 6.
In practical application, the flow direction of oil, gas and water fluid in an oil well from a root stop to a starting point flows from an underground production layer to a fixed-point well logging instrument, power is supplied to a current collector, a rubber of the current collector seals an annular space of an oil separating sleeve, so that the oil, gas and water fluid to be measured enters an instrument fluid channel 3 from a lower liquid inlet in the current collector, and flows upwards through a first electromagnetic flowmeter sensor 4 and a second electromagnetic flowmeter sensor 8 in sequence, the first electromagnetic flowmeter sensor 4 is fixed on an electromagnetic flowmeter main body 6 by screws in order to ensure that the two electromagnetic flowmeter sensors are distributed at 90 degrees, the electromagnetic flowmeter sensors are radially oriented by positioning screws, the electromagnetic flowmeter sensors 4 and the induction electrodes are mutually arranged at 90 degrees, the electromagnetic flowmeter sensors can mutually form 90 degrees, and the original signals of the first electromagnetic flowmeter sensor 4 and the second electromagnetic flowmeter sensor 8 can be processed by a circuit after being mutually arranged at 90 degrees Two electromagnetic flow data which form 90 degrees with each other are obtained, and the flow and the water content of the produced liquid are obtained by combining a capacitance water content meter.
The internal flow type four-electrode electromagnetic flow instrument system for horizontal well liquid production profile logging adopts two pairs of electromagnetic flow sensor electrodes which are 90 degrees to each other to form complementation, so that the horizontal well liquid production flow can be obtained, the water content can be obtained by short connection of the combined capacitance water content meter, the real-time measurement of the flow and the water content under the current collecting state is completed, the logging time efficiency is improved, the stability and the reliability of the liquid production profile logging instrument are improved, and the system has wider field adaptability.
The above embodiments are only for illustrating the invention and are not to be construed as limiting the invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention, therefore, all equivalent technical solutions also belong to the scope of the invention, and the scope of the invention is defined by the claims.
Claims (7)
1. An inward flow type four-electrode electromagnetic flow instrument system for a horizontal well is characterized by comprising an electromagnetic flow meter main body, a first electromagnetic flow sensor, a signal circuit board, a second electromagnetic flow sensor and a capacitance moisture meter short circuit;
the electromagnetic flowmeter main body is provided with a first electromagnetic flow sensor and a second electromagnetic flow sensor which are arranged at intervals;
the first electromagnetic flow sensor and the second electromagnetic flow sensor are arranged at an angle of 90 degrees with each other;
a signal processing circuit board is arranged between the first electromagnetic flow sensor and the second electromagnetic sensor;
the electromagnetic flowmeter main body is provided with a wire passing hole which is sealed and insulated by a sealing plug and is used for wiring of a current collector and other sensors; the leads of the first electromagnetic flow sensor and the second electromagnetic sensor are connected to the signal processing board through the wire through holes;
the intermediate position of electromagnetic flowmeter main part is equipped with fluid passage and two liquid outlets, and two liquid outlets are located fluid passage's both sides respectively to form respectively with fluid passage and predetermine the contained angle, the liquid outlet is located second electromagnetic sensor's rear side, and the short circuit of electric capacity moisture content meter is installed to liquid outlet position department.
2. An in-flow four-electrode electromagnetic flow meter system for horizontal wells according to claim 1 wherein the distance between two electromagnetic meter sensors should be greater than 300 mm.
3. The in-flow four-electrode electromagnetic flow meter system for horizontal wells according to claim 2, wherein the electromagnetic flow meter sensor comprises an induction electrode, a probe body, a pole core, an excitation coil, an insulating liner and an insulating sleeve; the induction electrodes and the excitation coil are distributed at 90 degrees;
two pairs of excitation coils are arranged in the vertical direction of the probe main body and surround the magnetic pole iron core, and an excitation circuit provides a magnetic field through a circuit board 5;
the probe is characterized in that an induction electrode is arranged in the horizontal direction of the probe main body, an insulating sleeve is sleeved on the outer surface of the induction electrode, and the inner layer of the probe main body is an insulating lining.
4. An in-flow four-electrode electromagnetic flow instrument system for horizontal wells according to claim 3,
the circuit board comprises a magnetic field driving circuit, a flow measuring circuit, an amplifying circuit, signal filtering, A/D conversion, MCU data processing and a communication unit.
5. An in-flow four-electrode electromagnetic flow instrument system for horizontal wells according to claim 1,
the capacitance water content meter short circuit comprises a capacitance water content meter electrode rod, a capacitance water content meter electrode seat, an insulating sleeve and a locking nut;
the electrode rod of the capacitance water content meter is arranged on the electrode seat of the capacitance water content meter, and the electrode seat of the capacitance water content meter is connected with the main body of the electromagnetic flowmeter by a thread buckle; and an insulating sleeve is arranged on the electrode rod of the capacitance moisture meter, and the other end of the insulating sleeve is locked by a locking nut.
6. An in-flow four-electrode electromagnetic flow meter system for horizontal wells according to claim 1, wherein the electromagnetic flow meter body is externally provided with an insulating outer cylinder.
7. An in-flow four-electrode electromagnetic flow meter system for horizontal wells according to claim 1, wherein the electromagnetic flow meter body and the upper connector short joint are connected by threads.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010632917.9A CN111811593B (en) | 2020-07-02 | 2020-07-02 | Internal flow type four-electrode electromagnetic flow instrument system for horizontal well |
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| CN202010632917.9A CN111811593B (en) | 2020-07-02 | 2020-07-02 | Internal flow type four-electrode electromagnetic flow instrument system for horizontal well |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211615A (en) * | 2020-11-18 | 2021-01-12 | 大庆科力远石油装备制造有限公司 | High-temperature through-core electromagnetic flow logging instrument |
| WO2024119996A1 (en) * | 2022-12-08 | 2024-06-13 | 中国石油天然气集团有限公司 | Online measurement method and system for water content of oil-based drilling fluid |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112211615A (en) * | 2020-11-18 | 2021-01-12 | 大庆科力远石油装备制造有限公司 | High-temperature through-core electromagnetic flow logging instrument |
| WO2024119996A1 (en) * | 2022-12-08 | 2024-06-13 | 中国石油天然气集团有限公司 | Online measurement method and system for water content of oil-based drilling fluid |
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| CN111811593B (en) | 2024-08-02 |
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