CN112211615A - High-temperature through-core electromagnetic flow logging instrument - Google Patents
High-temperature through-core electromagnetic flow logging instrument Download PDFInfo
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- CN112211615A CN112211615A CN202011291494.5A CN202011291494A CN112211615A CN 112211615 A CN112211615 A CN 112211615A CN 202011291494 A CN202011291494 A CN 202011291494A CN 112211615 A CN112211615 A CN 112211615A
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- circuit board
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- electromagnetic flow
- board support
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
Abstract
The invention provides a high-temperature through-core electromagnetic flow logging instrument, and belongs to the field of electromagnetic flow logging instruments. The signal transmitting and exciting circuit receives signals of the single chip microcomputer circuit and sends the signals, the signal receiving and processing circuit receives the signals sent by the signal transmitting circuit and the exciting circuit, amplifies and filters the signals and then transmits the amplified and filtered signals to the upper computer, and the single chip microcomputer circuit receives signals detected by a sensor and transmits the signals to the signal transmitting and exciting circuit; one end of the upper joint is connected with the measuring section through threads, the other end of the measuring section is fixed with one end of the circuit board section in an inserting and fixing mode, and the other end of the circuit board section is fixed with the lower joint in an inserting and fixing mode. The high-temperature through-core electromagnetic flow logging instrument disclosed by the invention is small in pressure loss, large in measurable flow range and high in reliability, and has the characteristics of an electromagnetic flow meter, so that the success rate of primary logging is greatly improved, and the circuit of the instrument adopts a novel design, so that the instrument is shortened, and the difficulty in site construction is reduced.
Description
Technical Field
The invention relates to a high-temperature through-core electromagnetic flow logging instrument, and belongs to the technical field of electromagnetic flow logging instruments.
Background
The traditional instrument is influenced by underground pressure, the traditional electromagnetic flowmeter adopts a leather bag oil injection method to eliminate the influence on a sensor part, the leather bag is easily corroded by gases such as underground hydrogen sulfide, the sealing links are too many, the length of the instrument is increased, and pressure leakage and liquid inlet phenomena can be generated in the long term.
In order to solve the problem of the traditional instrument, the integral type is adopted by the instrument to sink and press the shell, and oil injection balance is not needed. The instrument shortens, has reduced the site operation degree of difficulty.
Disclosure of Invention
The invention aims to solve the problems in the prior art and further provides a high-temperature through-core electromagnetic flow logging instrument.
The purpose of the invention is realized by the following technical scheme:
a high-temperature through-core electromagnetic flow logging instrument comprises a mechanical part, a measuring section, a circuit board section and an upper joint, wherein the measuring section comprises a sensor, the lower end of a sensor pressure-bearing shell A, the upper end of the sensor pressure-bearing shell A and a sensor pressure-bearing shell B; the circuit board section comprises a circuit board support shell, a circuit board support frame, a circuit board support upper end and a circuit board support lower end, wherein a middle isolation plate of the circuit board support is fixed in the circuit board support frame, two ends of the circuit board support frame are respectively fixed through the circuit board support upper end and the circuit board support lower end, the circuit board support frame, the circuit board support upper end and the circuit board support lower end are integrally fixed in the circuit board support shell, a jackscrew hole is arranged on the side surface of the circuit board lower end, a through line threading hole is arranged in the middle of the circuit board lower end, a shock pad mounting groove is arranged on the side surface of the circuit board upper end, a power line through hole and a single-core connector mounting hole seat are sequentially arranged in the middle of the circuit board upper end, the circuit board shell is provided with a wrench groove, the lower end of the circuit board section, the middle of the lower joint is provided with a thread A, the left side and the right side of the thread A are respectively provided with a sealing groove A and a sealing groove B, the right side of the sealing groove B is provided with a thread B, the lower joint is connected with a lower end instrument through the thread A, and the lower joint is connected with a pressure-bearing shell A of the sensor through the thread B;
the circuit part of the high-temperature through-core electromagnetic flow logging instrument comprises a power supply part, a signal transmitting and exciting circuit, a signal receiving and processing circuit, a single chip microcomputer circuit and a sensor, wherein the power supply part supplies power to the whole circuit part, the signal transmitting and exciting circuit receives signals of the single chip microcomputer circuit and realizes the transmission of the signals, the signal receiving and processing circuit receives the signals transmitted by the signal transmitting circuit and the exciting circuit, amplifies and filters the signals and transmits the amplified and filtered signals to an upper computer, and the single chip microcomputer circuit receives signals detected by the sensor and transmits the signals to the signal transmitting and exciting circuit;
the one end of top connection is passed through the screw and is connected with the measurement section, and the other end of measurement section is fixed with the one end of circuit board section through the fixed mode of pegging graft, and the other end of circuit board section is through the fixed lower clutch of the mode of pegging graft, and logging instrument is inside to be hollow structure, and top connection, circuit board section, measurement section and lower clutch are inside to pass the cable and connect.
The invention relates to a high-temperature over-core electromagnetic flow logging instrument, wherein a positioning step is arranged on the outer side of a pressure-bearing shell A of a sensor and used for fixing an insulating sleeve of the sensor, and the insulating sleeve of the sensor is wrapped on the outer side of a measuring section.
The invention relates to a high-temperature over-core electromagnetic flow logging instrument.A shell of a circuit board support adopts a single mechanical pressure-bearing stainless steel pipe.
The invention relates to a high-temperature over-core electromagnetic flow logging instrument, wherein a power supply part consists of a triode, a resistor, a capacitor and a voltage stabilizing chip; the signal transmitting and exciting circuit consists of a crystal oscillator, a switching triode, an analog switch and a trigger; the signal receiving and processing circuit consists of a signal amplifier and a peripheral resistor capacitor; the circuit of the single chip microcomputer consists of a crystal oscillator and the single chip microcomputer.
The high-temperature over-core electromagnetic flow logging instrument is of a hollow structure, and the upper joint, the circuit board section, the measuring section and the lower joint are connected through cables.
The invention relates to a high-temperature over-core electromagnetic flow logging instrument, wherein the upper connector of the instrument is connected in a three-core slip ring connection mode, and the lower connector of the instrument is connected in a single-core connection mode.
The high-temperature through-core electromagnetic flow logging instrument has small pressure loss and large measurable flow range, is hardly influenced by fluid media, and can measure the flow of acid, alkali, salt solution, water, sewage, corrosive liquid, slurry, pulp and other fluids; the high-reliability design and the characteristics of the electromagnetic flowmeter greatly improve the success rate of one-time logging; the sensor part adopts a novel external magnetic design, has no movable part, no liquid inlet hole, no influence of a measuring medium, simple structure and low failure rate; the instrument circuit adopts novel design, and the instrument shortens, has reduced the site operation degree of difficulty.
Drawings
FIG. 1 is a schematic diagram of a high temperature through-core electromagnetic flow logging tool according to the present invention.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
Fig. 3 is a block diagram of the housing of the circuit board segment of the present invention.
Fig. 4 is a sectional view taken along line a-a of fig. 3.
FIG. 5 is a block diagram of a sensor pressure housing of the measurement section of the present invention.
Fig. 6 is a sectional view taken along line a-a of fig. 5.
Fig. 7 is a block diagram of a circuit board support of the circuit board segment of the present invention.
Fig. 8 is a sectional view taken along line a-a of fig. 7.
FIG. 9 is a structural view of a lower joint in the present invention.
Fig. 10 is a sectional view taken along line a-a of fig. 9.
Fig. 11 is a structural diagram of a circuit portion.
Detailed Description
The invention will be described in further detail below with reference to the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation is given, but the scope of the present invention is not limited to the following embodiments.
The first embodiment is as follows: as shown in fig. 1 to 9, the high temperature through-core electromagnetic flow logging instrument according to the present embodiment includes:
fig. 5 and 6 show a pressure-bearing housing a of the sensor:
and 2-1 is the lower end of a pressure-bearing shell A of the sensor and is used for connecting a lower joint.
And 2-2 is a positioning step A of the pressure-bearing shell of the sensor, and is used for fixing the insulating sleeve of the sensor.
2-3 are electrode mounting holes for mounting receiving electrodes.
And 2-4 are the upper ends of the sensor pressure-bearing shells A and are used for connecting the sensor pressure-bearing shells B.
Fig. 7 and 8 are circuit board holders:
and 3-5 are through wire holes for penetrating the connecting wires between the sensor and the circuit board.
And 3-6 are top thread holes for fixing the circuit board support and preventing the back-off.
And 3-7 are circuit board support frames.
3-8 is the upper end of the circuit board bracket.
And 3-9 are shock pad mounting grooves at the upper end of the circuit board support and are used for shock absorption of the circuit board support.
3-10 is a single-core connector mounting hole seat.
And 3-11 are power line via holes.
3-12 are circuit board support middle isolation plates.
3-13 is the lower end of the circuit board bracket, which is connected with the pressure-bearing shell B of the sensor.
Fig. 3 and 4 are circuit board housings:
and 3-1 is the lower end of the circuit board shell and is connected with the upper end of the pressure-bearing shell B of the sensor.
And 3-2 is a circuit board shell bearing part used for bearing external pressure and protecting an internal structure.
And 3-3 is the upper end of the circuit board shell and is used for connecting an upper end instrument.
And 3-4 are wrench grooves of the circuit board shell, and are used for fixing a wrench when the circuit board shell is disassembled.
Fig. 9 and 10 are lower joints:
and 4-1 is a lower joint sealing groove A.
And 4-2 is a lower joint thread A which is connected with a lower end instrument and is matched with a double-tracing injection profile logging instrument system to work.
4-3 is a lower joint main body.
And 4-4 is a lower joint sealing groove B.
And 4-5 are lower joint threads B which are connected with the lower end of a pressure-bearing shell A of the sensor.
Electromagnetic flowmeter circuit part:
a power supply section. The circuit consists of a triode, a resistor, a capacitor and a voltage stabilizing chip.
Signal transmission and excitation circuit. The circuit consists of a crystal oscillator, a switching triode, an analog switch and a trigger.
Signal receiving and processing circuitry. It is composed of signal amplifier and peripheral resistor-capacitor.
And a single chip circuit. The device consists of a crystal oscillator and a singlechip.
The instrument mainly comprises a circuit control unit, a measurement detection section, an electrode, a shell, a liner, a plug and the like. Each component is independent, can disassemble fast, and overall structure reasonable in design, simple makes things convenient for the on-the-spot maintenance to change. The circuit of the circuit part of the instrument is formed by adopting the existing basic circuit, and the specific structure diagram is shown in fig. 11.
The upper end (including the centralizer) of the instrument is connected in a three-core slip ring connection mode, and the lower end (including the centralizer) of the instrument is connected in a single-core connection mode, and the upper end and the lower end are both in standard interface connection and can be flexibly connected with other instruments. The disassembly is convenient during field maintenance.
The instrument circuit part adopts the modular structure design, when a certain module breaks down, can change alone, need not to change the circuit assembly, makes things convenient for field maintenance.
The instrument probe adopts an integral sealing and packaging design, has no mechanical moving part, has good reliability, becomes a standard part and is convenient to disassemble and maintain.
The instrument adopts the design of an integrated circuit chip, the circuit regulation is the same, and each interface and electrical parameters such as voltage, current and the like are completely compatible and can be maintained and replaced mutually.
Example two: as shown in fig. 1-9, the present embodiment relates to a high temperature through-core electromagnetic flow logging tool,
the high-temperature through-core electromagnetic flow logging instrument is a flow meter for measuring flow based on Faraday's law of electromagnetic induction. The instrument has small pressure loss and large measurable flow range, is hardly influenced by fluid media, and can measure the flow of acid, alkali, salt solution, water, sewage, corrosive liquid, slurry, pulp and other fluids. The electromagnetic induction principle has no relation to the temperature, pressure and property of the conductive medium (the conductivity is more than 5 us/m), so that the requirement of the instrument on the use environment is reduced, and the application range of the instrument is wider.
Compared with other similar products, the product has the following characteristics:
1. the instrument adopts novel integrated electromagnetic excitation and a probe consisting of electrodes, and reasonable streamline taper design, adopts various high-temperature special pouring sealants for vacuum pouring and sealing in the production process, ensures that the characteristics of the probe can not drift under high-temperature and high-pressure environments, and has the characteristics of long-term stability, small zero drift, high measurement precision and the like.
2. The instrument adopts bipolar excitation, so that the problem of electrode polarization is effectively solved; noise interference is removed by adopting a multi-section filter circuit; and high-precision and quick AD is adopted, and the testing precision is improved by combining a software filtering algorithm.
3. The instrument circuit part adopts constant current and overvoltage protection, and when power is supplied reversely, each functional circuit of the instrument is in a cut-off state, so that the instrument can be prevented from being damaged due to misoperation.
4. The PIC high-temperature single chip microcomputer is used as a signal excitation source, so that the problem of signal source drift caused by high temperature of the conventional similar products is solved, a linear relation is formed between a pulse signal output by the PIC high-temperature single chip microcomputer and the flow, and the flow measurement accuracy is greatly improved.
5. The instrument probe has high sensitivity, high measurement precision, small starting displacement, wide measuring range, no mechanical moving part, high reliability and simple operation, and can finish the test of a plurality of measurement points by one-time well descending.
Example three: as shown in fig. 1 to 9, the stability of the product of the high-temperature through-core electromagnetic flow logging instrument according to the present embodiment:
the instrument circuit adopts an military grade chip, and can adapt to a harsh underground environment through multiple times of high-low temperature aging and screening, thereby ensuring the working stability of the instrument.
The electrode of the instrument is made of titanium alloy material which is specially processed, and the instrument is free from contamination, oxidation and influence of fluid medium.
The probe sensor of the instrument adopts a symmetrical distribution design, is sealed and packaged integrally, and the lining of the instrument is made of imported high-quality PEEK.
When the wire passes through the probe sensor, the shielding wire is adopted for the wire passing wire, so that the wire is prevented from generating interference signals on the probe of the instrument and the shell of the instrument, and the accuracy and the stability of the measurement of the instrument are ensured.
The signal excitation source is completely generated by the CPU, so that the signal source drift generated by a single analog circuit is solved, and the accuracy and the stability of the measurement of the instrument are greatly improved.
Example four: as shown in fig. 1 to 9, the high-temperature through-core electromagnetic flow logging instrument according to the present embodiment has the following application ranges:
the device is matched and connected with a Harlibton standard Manma instrument and is used for high-precision detection of fluid flow of polymers, water, sewage, acid, strong alkali and the like with the conductivity of more than 5 mu S/cm and the like. The five-parameter or seven-parameter combined logging instrument can be connected with other instruments to be used for well measurement.
The above description is only a preferred embodiment of the present invention, and these embodiments are based on different implementations of the present invention, and the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A high-temperature through-core electromagnetic flow logging instrument is characterized in that a mechanical part comprises a lower joint (4), a measuring section (2), a circuit board section (3) and an upper joint (1), the measuring section (2) comprises a sensor, the sensor pressure-bearing shell A comprises a lower end (2-2) of a sensor pressure-bearing shell A, an upper end (2-4) of the sensor pressure-bearing shell A and a sensor pressure-bearing shell B, wherein the lower end (2-2) of the sensor pressure-bearing shell A is connected with the upper end (2-4) of the sensor pressure-bearing shell A, an electrode mounting hole (2-3) is reserved in the sensor pressure-bearing shell A, the sensor is fixed in the sensor pressure-bearing shell A, the lower end (2-2) of the sensor pressure-bearing shell A is spliced with a lower connector (4), a wrench groove (3-4) is arranged at the joint of the lower end (2-2; the circuit board section (3) comprises a circuit board support shell, a circuit board support frame (3-7), a circuit board support upper end (3-8) and a circuit board support lower end (3-13), a middle isolation plate (3-12) of the circuit board support is fixed in the circuit board support frame (3-7), two ends of the circuit board support frame (3-7) are respectively fixed through the circuit board support upper end (3-8) and the circuit board support lower end (3-13), the circuit board support frame (3-7), the circuit board support upper end (3-8) and the circuit board support lower end (3-13) are integrally fixed in the circuit board support shell, a top screw hole (3-6) is arranged on the side surface of the circuit board lower end (3-13), a through wire passing hole (3-5) is arranged in the middle of the circuit board lower end (3-13), the lateral surface of the upper end (3-8) of the circuit board bracket is provided with a shock pad mounting groove (3-9), the middle of the upper end (3-8) of the circuit board bracket is sequentially provided with a power line through hole (3-11) and a single-core connector mounting hole seat (3-10), the circuit board shell is provided with a wrench groove (3-4), the lower end of the circuit board section is connected with a sensor pressure-bearing shell B in an inserting and fixing mode, the upper end of the circuit board section is connected with an upper connector (1) through threads, the middle of a lower connector (4) is provided with a lower connector thread A (4-2), the left side and the right side of the lower connector thread A (4-2) are respectively provided with a lower connector sealing groove A (4-1) and a lower connector sealing groove B (4-4), and the right side of the lower connector sealing groove B (4-, the lower joint (4) is connected with a lower end instrument through a lower joint thread A (4-2), and the lower joint (4) is connected with a pressure-bearing shell A of the sensor through a lower joint thread B (4-5);
the circuit part of the high-temperature through-core electromagnetic flow logging instrument comprises a power supply part, a signal transmitting and exciting circuit, a signal receiving and processing circuit, a single chip microcomputer circuit and a sensor, wherein the power supply part supplies power to the whole circuit part, the signal transmitting and exciting circuit receives signals of the single chip microcomputer circuit and realizes the transmission of the signals, the signal receiving and processing circuit receives the signals transmitted by the signal transmitting circuit and the exciting circuit, amplifies and filters the signals and transmits the amplified and filtered signals to an upper computer, and the single chip microcomputer circuit receives signals detected by the sensor and transmits the signals to the signal transmitting and exciting circuit;
the one end of top connection (1) is passed through the screw and is connected with measurement section (2), and it is fixed with the one end of circuit board section (3) that another head of measurement section (2) is through the fixed mode of pegging graft, and lower clutch (4) is fixed through the mode of pegging graft to the other end of circuit board section (3), and the logging instrument is inside to be hollow structure, and top connection (1), circuit board section (3), measurement section (2) and lower clutch (4) are inside to pass the cable and connect.
2. A high-temperature through-core electromagnetic flow logging instrument according to claim 1, characterized in that the outside of the sensor pressure-bearing housing a is provided with a positioning step for fixing a sensor insulating sleeve, which is wrapped around the outside of the measuring section (2).
3. A high temperature through-core electromagnetic flow logging tool as recited in claim 1 wherein said circuit board support housing is a single mechanically stressed stainless steel tube.
4. A high temperature through-core electromagnetic flow logging instrument according to claim 1, wherein said power supply portion is comprised of transistors, resistors, capacitors, and voltage regulation chips; the signal transmitting and exciting circuit consists of a crystal oscillator, a switching triode, an analog switch and a trigger; the signal receiving and processing circuit consists of a signal amplifier and a peripheral resistor capacitor; the circuit of the single chip microcomputer consists of a crystal oscillator and the single chip microcomputer.
5. The high temperature over-the-core electromagnetic flow logging tool of claim 1, wherein the high temperature over-the-core electromagnetic flow logging tool is hollow and the upper connector, the circuit board section, the measurement section and the lower connector are connected internally through a cable.
6. A high temperature through-core electromagnetic flow logging tool according to claim 1, wherein the tool upper joint (1) is connected in a three-core slip ring connection and the tool lower joint (4) is connected in a single-core connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011291494.5A CN112211615A (en) | 2020-11-18 | 2020-11-18 | High-temperature through-core electromagnetic flow logging instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011291494.5A CN112211615A (en) | 2020-11-18 | 2020-11-18 | High-temperature through-core electromagnetic flow logging instrument |
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| CN202011291494.5A Pending CN112211615A (en) | 2020-11-18 | 2020-11-18 | High-temperature through-core electromagnetic flow logging instrument |
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