CN107178359B - Coiled tubing real-time intelligent logging system with optical cable - Google Patents
Coiled tubing real-time intelligent logging system with optical cable Download PDFInfo
- Publication number
- CN107178359B CN107178359B CN201710511543.3A CN201710511543A CN107178359B CN 107178359 B CN107178359 B CN 107178359B CN 201710511543 A CN201710511543 A CN 201710511543A CN 107178359 B CN107178359 B CN 107178359B
- Authority
- CN
- China
- Prior art keywords
- signal
- circuit
- module
- analog
- control module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 88
- 238000012545 processing Methods 0.000 claims abstract description 97
- 239000003129 oil well Substances 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 14
- 238000004458 analytical method Methods 0.000 claims abstract description 10
- 238000004364 calculation method Methods 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims description 41
- 230000005669 field effect Effects 0.000 claims description 28
- 238000001914 filtration Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 14
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 4
- 239000013307 optical fiber Substances 0.000 abstract description 9
- 230000008054 signal transmission Effects 0.000 abstract description 3
- 239000003990 capacitor Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 12
- 238000013461 design Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 5
- 101100434411 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) ADH1 gene Proteins 0.000 description 4
- 101150102866 adc1 gene Proteins 0.000 description 4
- 101150042711 adc2 gene Proteins 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 101100162020 Mesorhizobium japonicum (strain LMG 29417 / CECT 9101 / MAFF 303099) adc3 gene Proteins 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 101000797092 Mesorhizobium japonicum (strain LMG 29417 / CECT 9101 / MAFF 303099) Probable acetoacetate decarboxylase 3 Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 108091022873 acetoacetate decarboxylase Proteins 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- E21B47/06—Measuring temperature or pressure
-
- 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
- E21B47/06—Measuring temperature or pressure
- E21B47/07—Temperature
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D25/00—Control of light, e.g. intensity, colour or phase
- G05D25/02—Control of light, e.g. intensity, colour or phase characterised by the use of electric means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention relates to the technical field of continuous oil pipe logging, in particular to a continuous oil pipe real-time intelligent logging system with an optical cable, which comprises a data processing device positioned on the ground, a measuring device positioned in an oil well and a continuous oil pipe optical cable assembly positioned between the data processing device and the measuring device, wherein the measuring device comprises a logging instrument carrier and a circuit assembly positioned in the logging instrument carrier, and the circuit assembly comprises a power supply module, a control module, a communication interface module, a signal acquisition and processing module and an optical modulation module. After the optical modulation module converts the signals measured by the measuring device into optical signals, the optical signals are transmitted to the ground data processing device through the optical cable or the optical fiber for calculation and analysis, and the optical cable or the optical fiber has high signal transmission rate and high accuracy, so that the underground data can be transmitted in real time, and workers on the ground can know the environment in an oil well in real time and can perform work deployment in time.
Description
Technical Field
The invention relates to the technical field of coiled tubing logging, in particular to a real-time intelligent logging system for a coiled tubing with an optical cable.
Background
In the continuous oil pipe logging process, a real-time acquisition and transmission technology of downhole data is an important means for improving the logging efficiency of the continuous oil pipe, the continuous oil pipe logging process utilizes downhole logging instruments to measure various parameters in an oil well, temperature and pressure parameters are used as main downhole parameters, the data are transmitted to a data processing system on the well by a certain method after the measurement, and the data can be converted into a parameter chart capable of being directly observed through arrangement analysis and comparison of the data, so that the downhole environment is conveniently judged, and further the next working plan is obtained.
In the prior art, downhole data are measured through different types of sensors, including temperature sensors, pressure sensors and the like, and due to the high-temperature and high-pressure environment in an oil well, many enterprises already use high-temperature and high-pressure resistant devices to finish data measurement and transmission. The transmission technology of the measurement signal generally utilizes an underground data encoder to convert data into an acoustic wave signal, utilizes acoustic waves to carry out wireless data transmission, utilizes a wellhead sensor to monitor the acoustic wave signal, decodes and restores the acoustic wave signal into original construction data, and finally transmits the original construction data to a data processing system to carry out data arrangement and analysis, but the acoustic wave signal has certain attenuation in the transmission process and has slower transmission speed, when a logging instrument is positioned at a deeper position, the acoustic wave signal can be transmitted to a well only after a certain time is required until a worker has seen the acoustic wave signal for a longer time, so that certain error and hysteresis exist, and the judgment of the worker can be influenced; in the prior art, data is transmitted by using a cable, but the transmission effect of the cable is not satisfactory.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a real-time intelligent logging system for a coiled tubing with an optical cable.
The real-time intelligent coiled tubing logging system with the optical cable comprises a data processing device positioned on the ground, a measuring device positioned in an oil well and a coiled tubing optical cable assembly positioned between the data processing device and the measuring device, wherein the measuring device is used for measuring parameters in the oil well and then transmitting the parameters to the data processing device through the coiled tubing optical cable assembly for calculation and analysis, and the measuring device comprises a logging instrument carrier and a circuit assembly positioned in the logging instrument carrier, wherein the circuit assembly comprises a power supply module, a control module, a communication interface module, a signal acquisition and processing module and an optical modulation module; the signal acquisition and processing module and the light modulation module are connected with the control module through the communication interface module, wherein:
the signal acquisition and processing module processes the acquired signals and sends the processed signals to the control module, the control module sends corresponding signals to the optical modulation module, the optical modulation module converts the electric signals into optical signals, and the optical signals are transmitted to the data processing device by the continuous oil pipe optical cable assembly for calculation and analysis;
the coiled tubing optical cable assembly comprises an oil pipe and an optical cable positioned in the oil pipe;
the light modulation module comprises a program-controlled voltage source, a luminous tube and a switching circuit, wherein the program-controlled voltage source, the luminous tube and the switching circuit are sequentially connected; the control module controls the magnitude of the output voltage of the program-controlled voltage source; the signal output end of the control module is connected with the switch circuit, and the control module controls the on-off of the switch circuit so as to control the on-off state of the luminous tube; the luminous tube converts the electric signal into an optical signal and then transmits the optical signal to the data processing device through the optical cable.
Further, the signal acquisition and processing module comprises a temperature signal acquisition and processing module, a well depth signal acquisition and processing module and a pressure signal acquisition and processing module, wherein:
the temperature signal acquisition and processing module, the well depth signal acquisition and processing module and the pressure signal acquisition and processing module respectively send the temperature signal, the well depth signal and the pressure signal to the control module through the communication interface module.
Further, the temperature signal acquisition and processing module comprises a thermometer power supply, a temperature sensor, a temperature signal filter circuit and a first analog-to-digital conversion circuit, wherein:
the temperature sensor, the temperature signal filter circuit and the first analog-to-digital conversion circuit are sequentially connected, a thermometer power supply is connected between the temperature sensor and the temperature signal filter circuit, the first analog-to-digital conversion circuit is connected with the control module, the temperature signal filter circuit filters a temperature signal measured by the temperature sensor and sends the temperature signal to the first analog-to-digital conversion circuit, and the first analog-to-digital conversion circuit converts an analog signal into a digital signal and sends the digital signal to the control module.
Further, the well depth signal acquisition and processing module comprises a magnetic positioning sensor, a well depth signal amplifying circuit, a well depth signal filtering circuit and a second analog-to-digital conversion circuit, wherein:
the well depth signal amplifying circuit, the well depth signal filtering circuit and the second analog-to-digital conversion circuit are sequentially connected, and the magnetic positioning sensor is connected into the well depth signal amplifying circuit; the well depth signal amplifying circuit amplifies the well depth signal measured by the magnetic positioning sensor, then the well depth signal is filtered by the well depth signal filtering circuit, and then the second analog-to-digital conversion circuit converts the analog signal into a digital signal and sends the digital signal to the control module.
Further, the pressure signal acquisition and processing module comprises a pressure meter power supply, a pressure sensor, a pressure signal amplifying circuit, a pressure signal filtering circuit and a third analog-to-digital conversion circuit, wherein:
the pressure meter power supply, the pressure sensor, the pressure signal amplifying circuit, the pressure signal filtering circuit and the third analog-to-digital conversion circuit are sequentially connected, the pressure signal measured by the pressure sensor is amplified by the pressure signal amplifying circuit and then filtered by the pressure signal filtering circuit, and the third analog-to-digital conversion circuit converts the analog signal into a digital signal and then sends the digital signal to the control module.
Further, the power module comprises a battery and a voltage regulating circuit, and the battery is connected into the voltage regulating circuit to provide voltage or current for other functional modules.
Further, in the optical modulation module, the switch circuit includes a resistor R a And field effect transistor Q a The luminous tube is diode D a Wherein:
resistor R a One end of the control module is connected with the signal output end of the control module, and the other end of the control module is connected with the field effect transistor Q a G pole of (2); diode D a Is connected with a program control voltage source and a field effect transistor Q a Between D poles of (2); field effect transistor Q a The S electrode of (2) is grounded;
the signal output end of the control module controls the field effect transistor Q through the output signal thereof a Thereby influencing diode D a The on-off state of the light source is realized, and the conversion from an electric signal to an optical signal is realized.
Further, the switching circuit further comprises an inverter U a Field effect transistor Q b Resistance R b Resistor R c Wherein:
inverter U a The input end of the phase inverter is connected with the signal output end of the control module, and the output end of the phase inverter is connected with the resistor R b Resistance, resistanceR b And the other end of the field effect transistor Q b G pole connection, resistance R c One end of the field effect transistor Q is connected with the output end of the program control voltage source b D pole connection of field effect transistor Q b The S pole of (2) is grounded.
The real-time intelligent logging system for the coiled tubing with the optical cable has the following beneficial effects:
1. after the optical modulation module converts the electric signal measured by the measuring device into an optical signal, the optical signal is transmitted to a data processing device on the ground through an optical cable or an optical fiber for calculation and analysis, and due to the fact that the signal transmission rate of the optical cable or the optical fiber is high, the accuracy is high, the real-time transmission of underground data is realized, so that workers on the ground can know the environment in an oil well in real time, and work deployment can be timely made.
2. The light modulation module comprises a program control voltage source, a luminous tube and a switch circuit, and the control module controls the output voltage of the program control voltage source, so as to control the light intensity of the luminous tube, and the light signal can reach the ground and can not be saturated when the measuring device is at different well depth positions.
3. The signal acquisition and processing module comprises a temperature signal acquisition and processing module, a well depth signal acquisition and processing module and a pressure signal acquisition and processing module, can measure temperature and pressure parameters in an oil well and can also measure the position of a measuring device in the oil well.
4. The power module comprises a battery and a voltage regulating circuit, and the battery is connected into the voltage regulating circuit to provide voltage or current meeting the requirements for other functional modules.
Drawings
For a clearer description of embodiments of the invention or of solutions in the prior art, the drawings which are used in the description of the embodiments or of the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a real-time intelligent logging system for coiled tubing with fiber optic cable according to the present invention;
FIG. 2 is a block diagram of the circuit assembly of the coiled tubing real-time intelligent logging system with optical cable of the present invention;
FIG. 3 is a circuit design diagram (I) of an optical modulation module of the coiled tubing real-time intelligent logging system with an optical cable;
FIG. 4 is a circuit design diagram (II) of an optical modulation module of the coiled tubing real-time intelligent logging system with an optical cable;
FIG. 5 is a circuit design diagram of a temperature signal acquisition and processing module of a coiled tubing real-time intelligent logging system with an optical cable according to the present invention;
FIG. 6 is a circuit diagram of a well depth signal acquisition and processing module of a coiled tubing real-time intelligent logging system with an optical cable according to the present invention;
FIG. 7 is a circuit design diagram of a pressure signal acquisition and processing module of a coiled tubing real-time intelligent logging system with an optical cable according to the present invention;
FIG. 8 is a circuit diagram of a portion of the modules in a circuit assembly of a coiled tubing real-time intelligent logging system with fiber optic cable according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
The invention relates to a real-time intelligent coiled tubing logging system with an optical cable, which comprises a data processing device positioned on the ground, a measuring device positioned in an oil well and a coiled tubing optical cable assembly positioned between the data processing device and the measuring device, wherein the measuring device is used for measuring various parameters in the oil well, such as temperature parameters, pressure parameters and the like, the measuring device transmits the measured data to the data processing device on the ground in the form of optical signals through the coiled tubing optical cable assembly, and the data processing device performs statistical analysis or calculation on the collected data to obtain the parameters in the corresponding oil well. The coiled tubing optical cable assembly comprises an oil pipe and an optical cable positioned in the oil pipe, the coiled tubing operation is the most common oil well operation mode in the modern technology, the coiled tubing operation is simple in operation, low in cost, capable of carrying out operation under pressure, small in stratum injury and the like, and a plurality of advantages of the coiled tubing optical cable assembly are recognized by a plurality of industry personnel.
The measuring device comprises a logging instrument carrier and a circuit assembly positioned in the logging instrument carrier, preferably, in order to prevent the circuit assembly from being damaged by high-temperature and high-pressure fluid, the logging instrument carrier is designed into a double-channel pipeline and is made of a material with stronger bearing capacity, wherein one channel is used for arranging the circuit assembly, and the other channel is specially used as a fluid flow channel, so that the fluid flow and the measurement of parameters in a well are not interfered with each other.
Specifically, as shown in fig. 1, the circuit assembly of the present embodiment includes a power module, a control module, a communication interface module, a signal acquisition and processing module, and an optical modulation module for converting an electrical signal into an optical signal; the signal acquisition and processing module and the light modulation module are connected with the control module through the communication interface module; the power supply module is respectively and electrically connected with the signal acquisition and processing module, the control module and the light modulation module and supplies power to the signal acquisition and processing module, the control module and the light modulation module. The signal acquisition and processing module processes the acquired signals and then sends the processed signals to the control module through the communication interface module, the control module sends corresponding signals to the optical modulation module, and the optical modulation module converts the electrical signals into optical signals and then transmits the optical signals to the data processing device for calculation and analysis. Preferably, the control module can be selected from various types of chips with control function such as MCU, ARM, DSP, CPLD, FPGA; the communication interface module selects an RS485 bus and/or a CAN bus, and CAN meet the connection requirements of different devices. The power module comprises a battery and a voltage regulating circuit, the battery is connected into the voltage regulating circuit to provide voltage or current meeting the requirements for other functional modules, the battery in the power module is preferably a high-capacity lithium battery, the voltage regulating circuit is connected through electrical elements with specific parameters, and voltage values or current values with different magnitudes are output and connected into other functional modules. The invention is not limited to the specific specification of the battery, and the voltage regulating circuit is designed according to the use environment, so that the voltage regulating circuit is easy to design for a person skilled in the art, and the invention is not limited to the specific specification.
Specifically, the light modulation module comprises a program-controlled voltage source, a light emitting tube and a switching circuit, wherein the program-controlled voltage source, the light emitting tube and the switching circuit are sequentially connected; the control module controls the magnitude of the output voltage of the program-controlled voltage source; the signal output end of the control module is connected with the switch circuit, and the control module controls the on-off of the switch circuit through the signal output by the signal output end so as to control the on-off state of the luminous tube; the conversion of the electric signal to the optical signal is realized by controlling the on-off state of the luminous tube, and the optical cable or the optical fiber is completely coupled with the luminous tube, so that the optical signal is transmitted in the optical cable or the optical fiber until the optical signal is received by an on-well data processing device. The program-controlled voltage source is used for controlling the output voltage or current of the light-emitting tube on the basis of providing electric energy for the light-emitting tube, when the current is larger, the light emitted by the light-emitting tube is stronger, when the current is smaller, the light emitted by the light-emitting tube is weaker, the intensity of the light is adjusted to ensure that an optical signal does not excessively saturate or excessively attenuate when reaching the data processing device, and the intensity of the light is determined according to the use environment. Preferably, the switching circuit is realized by a field effect transistor, the voltage value at one end of the luminous tube is influenced by a signal output by the signal output end, when the pressure difference at two ends of the luminous tube is positive, the luminous tube is bright, and when the pressure difference at two ends of the luminous tube is negative, the luminous tube is not bright. Preferably, the luminous tube adopts a diode, and the diode adopts a 1310nm or 1550nm laser diode to directly couple the diode with the optical fiber so as to reduce energy loss as far as possible.
Specifically, as shown in fig. 2, a second embodiment of the present invention is shown, where, based on the previous embodiment, the signal collecting and processing module includes a temperature signal collecting and processing module, a well depth signal collecting and processing module, and a pressure signal collecting and processing module, where the temperature signal collecting and processing module, the well depth signal collecting and processing module, and the pressure signal collecting and processing module are connected with the control module through the communication interface module respectively; the power module is respectively connected with the temperature signal acquisition and processing module, the well depth signal acquisition and processing module and the pressure signal acquisition and processing module and supplies power for the temperature signal acquisition and processing module, the well depth signal acquisition and processing module and the pressure signal acquisition and processing module. Preferably, the signal acquisition and processing module comprises at least two temperature signal acquisition and processing modules and two pressure signal acquisition and processing modules, and the temperature and pressure values inside and outside the measuring device are measured respectively.
Specifically, the temperature signal acquisition and processing module comprises a thermometer power supply, a temperature sensor, a temperature signal filter circuit and a first analog-to-digital conversion circuit, wherein the temperature sensor, the temperature signal filter circuit and the first analog-to-digital conversion circuit are sequentially connected, the thermometer power supply is connected between the temperature sensor and the temperature signal filter circuit, the first analog-to-digital conversion circuit is connected with the control module, the temperature signal filter circuit filters a temperature signal measured by the temperature sensor and sends the temperature signal to the first analog-to-digital conversion circuit, and the first analog-to-digital conversion circuit converts an analog signal into a digital signal and sends the digital signal to the control module.
Specifically, the well depth signal acquisition and processing module comprises a magnetic positioning sensor, a well depth signal amplifying circuit, a well depth signal filtering circuit and a second analog-to-digital conversion circuit, wherein the well depth signal amplifying circuit, the well depth signal filtering circuit and the second analog-to-digital conversion circuit are sequentially connected, and the magnetic positioning sensor is connected into the well depth signal amplifying circuit; the well depth signal amplifying circuit amplifies the well depth signal measured by the magnetic positioning sensor, then the well depth signal is filtered by the well depth signal filtering circuit, and then the second analog-to-digital conversion circuit converts the analog signal into a digital signal and sends the digital signal to the control module. The well depth signal acquisition and processing module obtains well depth data according to the principle that the magnetic positioning sensor generates induced potential due to the change of the thickness of the well wall of the oil well.
Specifically, the pressure signal acquisition and processing module comprises a pressure meter power supply, a pressure sensor, a pressure signal amplifying circuit, a pressure signal filtering circuit and a third analog-to-digital conversion circuit, wherein the pressure meter power supply, the pressure sensor, the pressure signal amplifying circuit, the pressure signal filtering circuit and the third analog-to-digital conversion circuit are sequentially connected, a pressure signal measured by the pressure sensor is filtered by the pressure signal filtering circuit after being amplified by the pressure signal amplifying circuit, and then the third analog-to-digital conversion circuit converts an analog signal into a digital signal and sends the digital signal to the control module.
Specifically, as shown in fig. 3, which shows a third embodiment of the present invention, in the optical modulation module, the switching circuit includes a resistor R a And field effect transistor Q a The luminous tube is diode D a Wherein the resistance R a One end of the control module is connected with the signal output end of the control module, and the other end of the control module is connected with the field effect transistor Q a G pole of (2); diode D a Is connected with a program control voltage source and a field effect transistor Q a Between D poles of (2); field effect transistor Q a The S electrode of (2) is grounded; the signal output end of the control module controls the field effect transistor Q through the output signal thereof a Thereby influencing diode D a The on-off state of the light source is realized, and the conversion from an electric signal to an optical signal is realized.
The program-controlled voltage source is diode D a The positive electrode of the programmable voltage source provides an adjustable voltage value, the voltage value realizes a control function through a control module, preferably, the programmable voltage source comprises a digital potentiometer, the digital potentiometer controls analog output according to a digital signal output by the control module, and then the voltage value output of the whole programmable voltage source is realized within a certain range through connection of electrical elements in a certain mode, and the connection mode and parameters of the digital potentiometer and peripheral electrical elements are not limited, so that the programmable voltage source is easy to realize for a person skilled in the art.
In particular, as shown in FIG. 4, a fourth embodiment of the present invention is shown in the fourth embodiment of the present inventionOn the basis of the three embodiments, the switching circuit further comprises an inverter U a Field effect transistor Q b Resistance R b Resistor R c Wherein the inverter U a The input end of the phase inverter is connected with the signal output end of the control module, and the output end of the phase inverter is connected with the resistor R b Resistance R b And the other end of the field effect transistor Q b G pole connection, resistance R c One end of the field effect transistor Q is connected with the output end of the program control voltage source b D pole connection of field effect transistor Q b The S pole of (2) is grounded. Compared with the third embodiment, the added loop can effectively reduce the diode D a And voltage fluctuation caused during on-off can ensure the stable operation of the light modulation module.
For the design of the present invention, a fifth embodiment is a specific implementation method of the signal acquisition and processing module according to the design of the present invention, as shown in fig. 5 to 7.
FIG. 5 is a circuit diagram of a temperature signal acquisition and processing module, and specifically, a temperature signal filtering circuit includes a resistor R 11 Resistance R 12 Capacitance C 11 Capacitance C 12 Operational amplifier U 11 The method comprises the steps of carrying out a first treatment on the surface of the The first analog-to-digital conversion circuit comprises a resistor R 13 A first analog-to-digital converter ADC1; wherein: resistor R in temperature signal filter circuit 11 And resistance R 12 Connection, resistance R 11 The other end of the resistor R is connected with a temperature sensor 12 And the other end of the (B) and the operational amplifier U 11 Is connected with the non-inverting input end of the power supply; capacitor C 11 One end is connected with a resistor R 11 And resistance R 12 Between, the other end is connected with the operational amplifier U 11 An output terminal of (a); capacitor C 12 Connected to the operational amplifier U 11 The other end of the same is grounded; operational amplifier U 11 The inverting input end of the control circuit is connected with the output end of the control circuit; resistor R in first analog-to-digital conversion circuit 13 One end and an operational amplifier U 11 The other end of the first analog-to-digital converter ADC1 is connected with the input end of the first analog-to-digital converter ADC1, and the output end of the first analog-to-digital converter ADC1 is connected with the control module. The temperature sensor can be selected from more suitable thermoelectricThe resistance is used for measuring temperature, and preferably, a platinum resistance temperature sensor is connected into the circuit, so that the platinum resistance temperature sensor has small volume, high precision, wide temperature measuring range and good reproducibility, and is particularly suitable for measuring the temperature in an oil well. The thermometer power supply is voltage or current output by the power supply module, the specific value of the thermometer power supply is determined by parameters of various devices in a specific circuit, and preferably, the thermometer power supply is designed with an overcurrent protection function, and the current is limited by the fact that the temperature sensor does not generate self-heating. The design of the temperature signal filter circuit can effectively filter high-frequency noise and ensure the acquisition accuracy of temperature data. The whole circuit can short-circuit the temperature sensor when abnormal conditions occur, has extremely high reliability, and is very suitable for underground environment.
When the invention comprises two temperature signal acquisition and processing modules, two groups of the embodiment can be included to respectively measure the internal temperature and the external temperature of the measuring device and respectively send the temperatures to the temperature signal filtering circuit; in order to save the space of the measuring device, two temperature sensors can be connected in parallel and then selectively connected with any one of the temperature sensors through an analog switch, and then the measured temperature signals are sent to a temperature signal filter circuit.
FIG. 6 is a circuit diagram of a well depth signal acquisition and processing module, specifically, a well depth signal amplification circuit including a resistor R 21 Resistance R 22 Resistance R 23 Resistance R 24 Capacitance C 21 Capacitance C 22 Operational amplifier U 21 、U 22 The method comprises the steps of carrying out a first treatment on the surface of the The well depth signal filter circuit comprises a resistor R 25 And capacitor C 23 The method comprises the steps of carrying out a first treatment on the surface of the The second analog-to-digital conversion circuit comprises a second analog-to-digital converter ADC2; in the well depth signal amplifying circuit, resistor R 21 And resistance R 22 Respectively connected with two output terminals of the magnetic positioning sensor, and a resistor R 21 The other end of the (B) is connected with an operational amplifier U 21 An inverting input terminal of (a), a resistor R 22 The other end of the (B) is connected with an operational amplifier U 21 Is provided with a non-inverting input terminal; resistor R 23 And capacitor C 21 Connected in parallel, one end of which is connected to the operational amplifier U 21 The other end is connected with the operational amplifier U 21 An output terminal of (a); resistor R 24 And capacitor C 22 Connected in parallel, one end of which is connected to the operational amplifier U 21 The other end is connected with the operational amplifier U 22 Is provided; operational amplifier U 22 The non-inverting input end of the capacitor is connected with the positive voltage, and the inverting input end of the capacitor is connected with the output end of the capacitor; in the well depth signal filter circuit, resistor R 25 One end of (a) and an operational amplifier U 21 The other end is connected with the input end of the second analog-to-digital converter ADC2; capacitor C 23 One end of the first analog-to-digital converter ADC2 is connected to the input end of the second analog-to-digital converter ADC2, and the other end of the first analog-to-digital converter ADC is grounded; the output end of the second analog-to-digital converter is connected with the control module. The magnetic positioning sensor comprises magnetic steel and a coil, and the coil influences the induction potential of the coil due to the thickness change of the casing pipe of the well wall in the moving process of the measuring device, so that a well depth signal is generated.
FIG. 7 is a circuit diagram of a pressure signal acquisition and processing module, specifically, a pressure signal amplifying circuit including a resistor R 31 Resistance R 32 Resistance R 33 Capacitance C 31 Capacitance C 32 Capacitance C 33 Capacitance C 34 Instrumentation amplifier U 31 The method comprises the steps of carrying out a first treatment on the surface of the The pressure signal filter circuit comprises a resistor R 34 Resistance R 35 Capacitance C 35 Capacitance C 36 AND operation amplifier U 32 The method comprises the steps of carrying out a first treatment on the surface of the The third analog-to-digital conversion circuit comprises a resistor R 36 And a third analog-to-digital converter ADC3; wherein: resistor R 31 And resistance R 32 Respectively connected with two output ends of the pressure sensor, and a resistor R 31 Is connected with the other end of the instrument amplifier U 31 An inverting input terminal of (a), a resistor R 32 Is connected with the other end of the instrument amplifier U 31 Is provided with a non-inverting input terminal; capacitor C 31 One end is connected with the instrument amplifier U 31 The other end of the input end is grounded; capacitor C 32 Access instrument amplifier U 31 The other end of the same is grounded; capacitor C 33 Two ends are respectively connected with an instrument amplifier U 31 A non-inverting input and an inverting input; resistor R 33 One end of the amplifier U 31 The other end is connected with the resistor R 34 Connecting; capacitance deviceC 34 One end is grounded, and the other end is connected with a resistor R 33 And resistance R 34 Between them; resistor R 34 One end and resistor R 33 Is connected with the other end of the resistor R 35 Connection, resistance R 35 The other end of the (B) is connected with an operational amplifier U 32 Is provided with a non-inverting input terminal; resistor C 35 One end is connected with a resistor R 34 And resistance R 33 Between the other end and the operational amplifier U 32 Is connected with the output end of the power supply; capacitor C 36 One end is grounded, and the other end is connected with an operational amplifier U 32 Is connected with the normal phase input end of the circuit board; operational amplifier U 32 The inverting input end of the control circuit is connected with the output end of the control circuit; resistor R 36 Connected to the operational amplifier U 32 The output end of the third analog-to-digital converter ADC3 is connected with the control module between the output end of the third analog-to-digital converter ADC3 and the input end of the third analog-to-digital converter ADC 3. The principle of the pressure meter power supply is the same as that of the thermometer power supply, and the description is omitted here. Preferably, the pressure sensor in the invention is a strain type pressure sensor, and the strain type pressure sensor has a large measurement range and good dynamic performance, and is suitable for rapid change pressure measurement. In the pressure signal amplifying circuit, the pressure signal is amplified by an instrument amplifier U 31 The pressure sensor can be suitable for different types of pressure sensors by adjusting the signal gain, and high-frequency noise is effectively filtered through the pressure signal filter circuit, so that the accuracy of pressure signals is ensured.
The circuit designs of the temperature signal acquisition and processing module, the well depth signal acquisition and processing module and the pressure signal acquisition and processing module are mutually independent, and any one or any combination of the two can be selected for implementation in the implementation process of the invention, and the invention is not to be construed as limiting the spirit and scope of the invention.
Fig. 8 is a schematic diagram showing a sixth embodiment of the present invention, which is based on the implementation manners of the third embodiment and the fifth embodiment, and discloses the relationships among the light modulation module, the information acquisition and processing module, the communication interface module, and the control module.
The whole continuous oil pipe real-time intelligent logging system with the optical cable is characterized in that after an optical modulation module converts an electric signal measured by a measuring device into an optical signal, the optical signal is transmitted to a ground data processing device through the optical cable or the optical fiber for calculation and analysis, and as the signal transmission rate of the optical cable or the optical fiber is high, the accuracy is high, the real-time transmission of underground data is realized, so that a worker on the ground can know the environment in an oil well in real time, and work deployment is timely carried out; in the light modulation module, the control module controls the output voltage of the program-controlled voltage source, so as to control the light intensity of the luminous tube, and the light signal can reach the ground and cannot be saturated when the measuring device is at different well depth positions; the signal acquisition and processing module comprises a temperature signal acquisition and processing module, a well depth signal acquisition and processing module and a pressure signal acquisition and processing module, can measure temperature and pressure parameters in an oil well and can also measure the position of a measuring device in the oil well; the power module comprises a battery and a voltage regulating circuit, and the battery is connected into the voltage regulating circuit to provide voltage or current meeting the requirements for other functional modules.
The invention has been further described with reference to specific embodiments, but it should be understood that the detailed description is not to be construed as limiting the spirit and scope of the invention, but rather as providing those skilled in the art with the benefit of this disclosure with the benefit of their various modifications to the described embodiments.
Claims (6)
1. The utility model provides a coiled tubing real-time intelligent logging system with optical cable, includes the data processing apparatus who is located ground, the measuring device who is located in the oil well and is located between data processing apparatus and the measuring device coiled tubing optical cable assembly, the measuring device is after measuring the parameter in the oil well through coiled tubing optical cable assembly transmission to data processing apparatus carries out calculation analysis, measuring device includes logging instrument carrier and is located logging instrument carrier inside circuit assembly, characterized in that, circuit assembly includes power module, control module, communication interface module, signal acquisition and processing module, optical modulation module; the signal acquisition and processing module and the light modulation module are connected with the control module through the communication interface module, wherein:
the signal acquisition and processing module processes the acquired signals and sends the processed signals to the control module, the control module sends corresponding signals to the optical modulation module, and the optical modulation module converts the electrical signals into optical signals and then transmits the optical signals to the data processing device for calculation and analysis by the continuous oil pipe optical cable assembly;
the continuous oil pipe optical cable assembly comprises an oil pipe and an optical cable arranged in the oil pipe;
the light modulation module comprises a program-controlled voltage source, a luminous tube and a switching circuit, wherein the program-controlled voltage source, the luminous tube and the switching circuit are sequentially connected; the program-controlled voltage source is connected with the control module through the communication interface module, and the control module controls the output voltage of the program-controlled voltage source; the signal output end of the control module is connected with the switch circuit, and the control module controls the on-off of the switch circuit so as to control the on-off state of the luminous tube; the luminous tube converts the electric signal into an optical signal and then transmits the optical signal to the data processing device through the optical cable;
the signal acquisition and processing module comprises a well depth signal acquisition and processing module; the well depth signal acquisition and processing module comprises a magnetic positioning sensor, a well depth signal amplifying circuit, a well depth signal filtering circuit and a second analog-to-digital conversion circuit, wherein: the well depth signal amplifying circuit, the well depth signal filtering circuit and the second analog-to-digital conversion circuit are sequentially connected, and the magnetic positioning sensor is connected into the well depth signal amplifying circuit; the well depth signal amplifying circuit amplifies the well depth signal measured by the magnetic positioning sensor, filters the well depth signal by the well depth signal filtering circuit, converts the analog signal into a digital signal by the second analog-to-digital conversion circuit and sends the digital signal to the control module;
in the optical modulation module, the switch circuit includes a resistor Ra and a field effect transistor Qa, and the light emitting tube is a diode Da, where:
one end of the resistor Ra is connected with the signal output end of the control module, and the other end of the resistor Ra is connected with the G pole of the field effect transistor Qa; the diode Da is connected between the program-controlled voltage source and the D pole of the field effect transistor Qa; the S electrode of the field effect tube Qa is grounded;
the signal output end of the control module controls the state of the field effect transistor Qa through the output signal of the control module, so that the on-off state of the diode Da is influenced, and the conversion from an electric signal to an optical signal is realized.
2. The coiled tubing real-time intelligent logging system with optical cable of claim 1, wherein the signal acquisition and processing module comprises a temperature signal acquisition and processing module, a pressure signal acquisition and processing module, wherein:
the temperature signal acquisition and processing module, the well depth signal acquisition and processing module and the pressure signal acquisition and processing module respectively send temperature signals, well depth signals and pressure signals to the control module through the communication interface module.
3. The coiled tubing real-time intelligent logging system with fiber optic cable of claim 2, wherein the temperature signal acquisition and processing module comprises a thermometer power supply, a temperature sensor, a temperature signal filtering circuit, and a first analog-to-digital conversion circuit, wherein:
the temperature sensor, the temperature signal filter circuit and the first analog-to-digital conversion circuit are sequentially connected, the thermometer power supply is connected between the temperature sensor and the temperature signal filter circuit, the first analog-to-digital conversion circuit is connected with the control module, the temperature signal filter circuit filters a temperature signal measured by the temperature sensor and sends the temperature signal to the first analog-to-digital conversion circuit, and the first analog-to-digital conversion circuit converts an analog signal into a digital signal and sends the digital signal to the control module.
4. The coiled tubing real-time intelligent logging system with optical cable of claim 2, wherein the pressure signal acquisition and processing module comprises a pressure gauge power supply, a pressure sensor, a pressure signal amplifying circuit, a pressure signal filtering circuit, and a third analog-to-digital conversion circuit, wherein:
the pressure meter power supply, the pressure sensor, the pressure signal amplifying circuit, the pressure signal filtering circuit and the third analog-to-digital conversion circuit are sequentially connected, pressure signals measured by the pressure sensor are amplified by the pressure signal amplifying circuit and then filtered by the pressure signal filtering circuit, and analog signals are converted into digital signals by the third analog-to-digital conversion circuit and then sent to the control module.
5. The coiled tubing real-time intelligent logging system with optical cable of claim 1, wherein the power module comprises a battery and a voltage regulating circuit, and the battery is connected into the voltage regulating circuit to provide voltage or current for other functional modules.
6. The coiled tubing real-time intelligent logging system with fiber optic cable of claim 1, wherein said switching circuit further comprises an inverter Ua, a field effect transistor Qb, a resistor Rb, and a resistor Rc, wherein:
the input end of the inverter Ua is connected with the signal output end of the control module, the output end of the inverter is connected with the resistor Rb, the other end of the resistor Rb is connected with the G pole of the field effect transistor Qb, one end of the resistor Rc is connected with the output end of the program control voltage source, the other end of the resistor Rc is connected with the D pole of the field effect transistor Qb, and the S pole of the field effect transistor Qb is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710511543.3A CN107178359B (en) | 2017-06-28 | 2017-06-28 | Coiled tubing real-time intelligent logging system with optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710511543.3A CN107178359B (en) | 2017-06-28 | 2017-06-28 | Coiled tubing real-time intelligent logging system with optical cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107178359A CN107178359A (en) | 2017-09-19 |
| CN107178359B true CN107178359B (en) | 2023-10-24 |
Family
ID=59844571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710511543.3A Active CN107178359B (en) | 2017-06-28 | 2017-06-28 | Coiled tubing real-time intelligent logging system with optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107178359B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110630252B (en) * | 2018-06-21 | 2022-09-23 | 中国石油化工股份有限公司 | Measurement while drilling system and method for coiled tubing drilling |
| CN109119196A (en) * | 2018-09-26 | 2019-01-01 | 广东迅维科技发展有限公司 | A kind of optoelectronic composite cable and coiled tubing logging system |
| CN109267991B (en) * | 2018-10-10 | 2019-09-03 | 北京大德广源石油技术服务有限公司 | Oil/gas well output and injection monitoring system |
| CN112727394B (en) * | 2019-10-28 | 2023-01-13 | 中国石油化工股份有限公司 | Coiled tubing hydraulic workover string and method |
| CN111155985A (en) * | 2019-12-31 | 2020-05-15 | 陕西明泰电子科技发展有限公司 | Communication method used in drill rod and drilling tool communication device |
| CN111622742B (en) * | 2020-07-14 | 2023-05-05 | 中国石油大学(华东) | Fluid self-power generation parameter detection and communication system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4227404A (en) * | 1978-04-17 | 1980-10-14 | Century Geophysical Corporation | Digital mineral logging system |
| US4512629A (en) * | 1982-03-30 | 1985-04-23 | Hewlett-Packard Company | Optical fiber with hermetic seal and method for making same |
| CN101324188A (en) * | 2008-07-28 | 2008-12-17 | 西安石油大学 | Inner pressure type temperature compensation high-temperature high-pressure optical fiber grating sensor |
| CN102587897A (en) * | 2012-03-16 | 2012-07-18 | 山东省科学院激光研究所 | Non-immersive underground optical fiber flow monitoring system |
| CN102749490A (en) * | 2011-04-18 | 2012-10-24 | 中国石油集团长城钻探工程有限公司 | Method and device for directly measuring voltage of cable head of downhole instrument |
| CN105890637A (en) * | 2009-05-27 | 2016-08-24 | 希里克萨有限公司 | Method and apparatus for optical sensing |
| CN206874273U (en) * | 2017-06-28 | 2018-01-12 | 杨冬 | A kind of real-time Fiber Optical Communication System applied to coiled tubing well logging field |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2003267553A1 (en) * | 2002-08-30 | 2004-03-19 | Sensor Highway Limited | Method and apparatus for logging a well using fiber optics |
| US9328597B2 (en) * | 2011-04-07 | 2016-05-03 | Electro-Petroleum, Inc. | Electrode system and sensor for an electrically enhanced underground process |
| US9765610B2 (en) * | 2015-02-13 | 2017-09-19 | Halliburton Energy Services, Inc. | Real-time tracking and mitigating of bending fatigue in coiled tubing |
-
2017
- 2017-06-28 CN CN201710511543.3A patent/CN107178359B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4227404A (en) * | 1978-04-17 | 1980-10-14 | Century Geophysical Corporation | Digital mineral logging system |
| US4512629A (en) * | 1982-03-30 | 1985-04-23 | Hewlett-Packard Company | Optical fiber with hermetic seal and method for making same |
| CN101324188A (en) * | 2008-07-28 | 2008-12-17 | 西安石油大学 | Inner pressure type temperature compensation high-temperature high-pressure optical fiber grating sensor |
| CN105890637A (en) * | 2009-05-27 | 2016-08-24 | 希里克萨有限公司 | Method and apparatus for optical sensing |
| CN102749490A (en) * | 2011-04-18 | 2012-10-24 | 中国石油集团长城钻探工程有限公司 | Method and device for directly measuring voltage of cable head of downhole instrument |
| CN102587897A (en) * | 2012-03-16 | 2012-07-18 | 山东省科学院激光研究所 | Non-immersive underground optical fiber flow monitoring system |
| CN206874273U (en) * | 2017-06-28 | 2018-01-12 | 杨冬 | A kind of real-time Fiber Optical Communication System applied to coiled tubing well logging field |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107178359A (en) | 2017-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107178359B (en) | Coiled tubing real-time intelligent logging system with optical cable | |
| CN104569902B (en) | Digital type electric energy meter power consumption measuring device and method | |
| CN104020346A (en) | Micro-current signal extraction system | |
| CN103332207A (en) | Method and device for on-line acquisition of steel rail temperature, strain and acceleration data | |
| CN103234620A (en) | Extrinsic optical-fiber F-B (fabry-perot) acoustic-emission sensor, ultrasonic detector containing sensor and use method of detector | |
| CN106679703A (en) | Data reading device of vibrating wire sensor and working method of data reading device | |
| CN104299408A (en) | Temperature monitoring device for high-voltage electrical equipment | |
| CN103713243B (en) | 10V inside switch cabinet discharging detection device based on electromagnetic antenna receiving array | |
| CN108106517A (en) | A kind of method of long-range monitoring tree diameters increment | |
| CN204731595U (en) | The online failure monitoring device of a kind of submersible electric motor | |
| CN201622316U (en) | Capacitive equipment current-leaking measuring device | |
| CN201935750U (en) | High potential real-time temperature detector | |
| CN103528492A (en) | Signal converter of high-measurement-range submicron-level high-precision LVDT (linear variable differential transformer) displacement sensor | |
| CN202382873U (en) | Intelligent temperature transmitter | |
| CN105526888A (en) | Thickness measuring method and system | |
| CN206874273U (en) | A kind of real-time Fiber Optical Communication System applied to coiled tubing well logging field | |
| CN210626919U (en) | High-precision analog quantity data acquisition module based on RS-485 communication | |
| CN101871797A (en) | Portable wireless mobile geotechnical engineering parameter test platform based on Bluetooth | |
| CN204924490U (en) | Photoelectric conversion module | |
| CN109372500B (en) | Three-level calibration method for direct-current weak signal of formation water resistivity logging instrument | |
| CN102436995A (en) | Hall high voltage detection control method applied to traveling wave tube program control high voltage power supply | |
| CN206161783U (en) | Dry -type air -core reactor oscillating wave partial discharge test device based on interchange is stepped up | |
| CN201463744U (en) | Explosion light signal acquisition device | |
| CN204189300U (en) | A kind of high voltage electric equipment device for detecting temperature | |
| CN205642725U (en) | Resistance vacuum transmitter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20181026 Address after: 519000 507U, five building, 8 Pingtung six road, Nanping Science and Technology Industrial Park, Zhuhai, Guangdong. Applicant after: GUANGDONG XUNWEI TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 519000 Room 101, lotus Hing Street, Xiangzhou District, Zhuhai, Guangdong, 101 Applicant before: Yang Dong |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |