CN208777988U - The matched mud comprehensive parameters acquisition device of wireless composite logging - Google Patents
The matched mud comprehensive parameters acquisition device of wireless composite logging Download PDFInfo
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- CN208777988U CN208777988U CN201820972142.8U CN201820972142U CN208777988U CN 208777988 U CN208777988 U CN 208777988U CN 201820972142 U CN201820972142 U CN 201820972142U CN 208777988 U CN208777988 U CN 208777988U
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Abstract
The utility model gives a kind of matched mud comprehensive parameters acquisition device of wireless composite logging, includes at least: temperature sensing unit, for collecting the temperature signal in mud；Density sensing unit, the minute-pressure capacitance sensor including two with difference in height, for collecting the pressure signal of different height in mud；Conductivity sensors unit, including conductivity coil, for collecting the concentration for detecting metal ion in mud in mud；Consequential signal is calculated by the signal that temperature sensing unit and density sensing unit acquire in control unit.There is the matched mud comprehensive parameters acquisition device of this wireless composite logging 3.6V low voltage power supply, average current to be less than the low-power consumption work characteristics of 10mA, can be with integral collecting and processing density, conductivity, three parameter signal of temperature.
Description
Technical field
The utility model relates to a kind of signal pickup assembly, in particular to the matched mud of a kind of wireless composite logging is comprehensive
Close parameter acquisition devices.
Background technique
Have great significance in drilling process to density, conductivity, temperature requirement, it be to ensure that quickly, balance, it is high-quality
Safety drilling, while preventing oil vapour pollution from having great meaning for protection oil-gas Layer.So being wanted all along in drilling process
Reinforce the monitoring of mud density, conductivity, temperature parameter, to guarantee going on smoothly for drilling well.
Since Oil Field environment is complicated severe, light for the structural requirement of sensor, stability requirement is higher, and
A large amount of manpower and material resources are needed for the wiring of sensor, and device location be once change or actual environment can not be routed,
Influence normal acquisition operation.
It must be pointed out traditional wired well logging mode, cannot efficiently support existing drilling technology, compound logging
Be bound to the implementation of wireless low-power consumption to be moved towards.At present using simple system integration mode and existing commercial wireless transmission
Technology is unable to satisfy the actual needs at scene at all, only since sensor source, to all links of wireless transmission, all
Using low power dissipation design, but there is presently no manufacturers (including foreign well-known brand company) can break through this technology.
And previous density, conductivity, temperature sensor measure respectively, and three kinds of sensors require long pole insertion
Mud, more demanding to in-site installation, failure rate is higher, maintenance trouble；And signal is wire transmission, 24V power supply, electric current
It consumes bigger, battery can not be used to power it, because the normal power supply voltage of lithium battery is 3.6V, wire transmission be needed to believe
Number, cause equipment wiring distance long, it is inconvenient to use, it can not achieve digital information acquisition.
In addition, existing mud weight sensor uses differential pressure diaphragm as acquisition component, by squeezing silicone oil, so that differential pressure
Small capacitance variations enhanced processing is become the output of 4 ~ 20mA current signal, due to silicone oil when scene uses by capacitance variation
Be affected by temperature it is larger so that collected signal temperature drift is big.And oil-filled part volume is larger, heavy, diaphragm is fragile, in mud pit
In easily impacted by mud it is bad, differential pressure diaphragm damage wherein any one must replace complete equipment, it is not easy to repair.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of records of the wireless composite of low-power consumption, strong antijamming capability
The matched mud comprehensive parameters acquisition device of well instrument, which may be implemented low voltage power supply, average current is less than 10mA,
Acquisition and processing can once acquire three kinds of density, conductivity, temperature parameters.
In order to solve the above technical problems, the utility model provides a kind of comprehensive ginseng of the matched mud of wireless composite logging
Number acquisition device, includes at least:
Temperature sensing unit, for collecting the temperature signal in mud；
Density sensing unit, the minute-pressure capacitance sensor including two with difference in height are different high in mud for collecting
The pressure signal of degree；
Conductivity sensors unit, including conductivity coil, for collecting the concentration for detecting metal ion in mud in mud；
Control unit, the pressure signal meter of concentration signal and the acquisition of density sensing unit to the acquisition of conductivity sensors unit
It calculates, concentration signal and pressure signal is compensated by the temperature signal that temperature sensing unit acquires, obtain consequential signal.
With such a structure, the matched mud comprehensive parameters acquisition device of this wireless composite logging has 3.6V low
Power voltage supply, average current are less than the low-power consumption work characteristics of 10mA, can be with integral collecting and processing density, conductivity, temperature
Spend three parameter signals.
Acquiring three kinds of density, conductivity, temperature parameters not being is by three kinds of sensor simple superposition, this wireless composite well logging
The matched mud comprehensive parameters acquisition device of instrument can obtain the density, conductivity, temperature data at a certain moment in real time, utilize
Temperature signal this moment compensates the density and conductivity signal measured, and original mutually independent sensor is overcome to exist
Temperature drift problem, guarantee measurement precision.
And original differential pressure diaphragm is replaced using minute-pressure capacitance sensor, realizing reduces Sensor temperature drift, increases sensing
Device anti-interference ability, portable construction, effect easy to maintenance.
The art of this patent provides the institute from sensor source to wireless transmission to the domestic existing comprehensive logging instrument researched and developed
There is link, all using the digitized mud comprehensive parameters acquisition device of low-consumption wireless.
For the clearer technology contents for understanding the utility model, below by the matched mud of this wireless composite logging
Comprehensive parameters acquisition device is referred to as this acquisition device.
The temperature sensing unit of this acquisition device includes thermistor；With such a structure, thermistor meets this
The design requirement of acquisition device.
Two minute-pressure capacitance sensors of this acquisition device are separately fixed on guide rod, two minute-pressure capacitance sensor distributions
Position has difference in height；Thermistor is also secured on guide rod；With such a structure, minute-pressure capacitance sensor and temperature-sensitive electricity
The layout of resistance is more reasonable, is easy to use.
This acquisition device further includes wireless transmission unit, for passing the calculated consequential signal of control unit using wireless
Defeated mode is sent；With such a structure, this acquisition device and external equipment may be implemented in wireless transmission unit
Connection, has expanded the suitable environment of this acquisition device.
The control unit of this acquisition device also controls temperature sensing unit, density sensing unit, wireless transmission unit on time
Between signal carry out work or suspend mode；With such a structure, this acquisition device can working condition and dormant state it
Between switch, reduce the power consumption of this acquisition device, and realize the high frequency sound effect of this acquisition device.
The temperature signal amplification of collection is input to control by prime amplifying unit by the temperature sensing unit of this acquisition device
Unit processed；With such a structure, the signal between temperature sensing unit and control unit is facilitated to transmit.
ADC chip module is equipped with before in the control unit of this acquisition device, the temperature signal that temperature sensing unit is collected is logical
Processing calculating is carried out after crossing prime amplifying unit input ADC chip module；The pressure signal that density sensing unit is collected inputs ADC
Processing calculating is carried out after chip module.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of this acquisition device embodiment.
Fig. 2 is the functional block diagram of this acquisition device embodiment.
Specific embodiment
As illustrated in fig. 1 and 2
This acquisition device includes temperature sensing unit, conductivity sensors unit, density sensing unit, control unit, guide rod
1, prime amplifying unit and wireless transmission unit.
Temperature sensing unit is commercially available PT100 thermistor 3, and temperature sensing unit can give the temperature of density and conductivity
Degree compensation provides signal, and density sensing unit includes two commercially available minute-pressure capacitance sensors 4, uses MSP430 in control unit
Single-chip microcontroller is equipped with 24 ADC chips before single-chip microcontroller, and prime amplifying unit is one group of general amplifying circuit, and wireless transmission unit is adopted
With the radiofrequency emitting module of 433MHz, for the side by the calculated consequential signal of the single-chip microcontroller of control unit using wireless transmission
Formula is sent, and conductivity sensors unit is conductivity coil 5.
1 one end of guide rod is equipped with the bending of semicircle shape, and conductivity coil 5 is fixed on the end of the close bending part of guide rod 1,
PT100 thermistor 3 and two minute-pressure capacitance sensors 4 are respectively by laser welding on guide rod 1, two minute-pressure capacitance sensings
About 4 device is distributed, and two minute-pressure capacitance sensors 4 are kept fixed the difference in height of 300mm, and two minute-pressure capacitance sensors 4 are collected
The pressure signal of different height in mud, PT100 thermistor 3 are between two minute-pressure capacitance sensors 4, stay in guide rod 1
There is the cavity passed through for conducting wire.
Battery power supply unit, prime amplifying unit, control unit and wireless transmission unit are all disposed on integrated circuit board,
Integrated circuit board is fixed in shell 2, and shell 2 and guide rod seal between 1 upper end, PT100 thermistor 3 and two minute-pressure capacitors
Sensor 4 is connect by conducting wire with integrated circuit board respectively, and conducting wire is by the cavity in guide rod 1, battery and Voltage stabilizing module composition
Battery power supply unit, battery power supply unit are that lithium battery normal working voltage (3.6V) is accessed Voltage stabilizing module, are then converted into
Stable 3.3V operating voltage energizes this acquisition device.
The temperature letter that the concentration signal of metal ion and PT100 thermistor 3 are collected in the mud that conductivity coil 5 is collected
Number by being input in the single-chip microcontroller of control unit after prime amplifying unit and ADC chip module；Two minute-pressure capacitance sensors 4
The pressure signal of collection is input in the single-chip microcontroller of control unit after passing through ADC chip.
In use, the single-chip microcontroller of control unit receives the pressure signal of two minute-pressure capacitance sensors 4 collection, two minute-pressures
The pressure change for incuding different densities mud in the case where distance is fixed is sensed, density algorithm (density algorithm principle benefit is passed through
With P=ρ gh formula) density of computation of mud.
PT100 thermistor 3 detects environment temperature, the variation of the PT100 thermistor 3 after single-chip microcontroller acquisition process, under
The difference of two minute-pressure capacitance sensors 4 calculates density to its temperature-compensating under the machine software sampling different temperatures of position.
Wherein, the single-chip microcontroller of control unit also controls temperature sensing unit, density sensing unit, prime amplifying unit, nothing
Temporally signal carries out work to line transmission unit or suspend mode, control principle are as follows: single-chip microcontroller starts two minute-pressure capacitance sensings
Device 4, PT100 thermistor 3 and conductivity coil 5, pressure signal are transmitted to single-chip microcontroller after ADC chip, conductivity coil 5
The signal of signal and PT100 thermistor 3 is transmitted to single-chip microcontroller also by prime amplifying unit, (such as 100 millis after a period of time
Second), after PT100 thermistor 3, conductivity coil 5 and two 4 stable working states of minute-pressure capacitance sensor, start 433MHz
Radiofrequency emitting module acquired after the stabilization signal of a period of time (such as by single-chip microcontroller treated signal by wireless transmission
100 milliseconds), it is single-chip microcontroller closing temperature sensing unit, conductivity sensors unit, density sensing unit, prime amplifying unit, wireless
Transmission unit realizes the suspend mode of this entire acquisition device, reduces energy consumption (dormancy time can be 800 milliseconds), and so on, make
This acquisition device has the advantages that high frequency sound.
All configuration signals of single-chip microcontroller are all that wireless module is passed to by SPI interface, realize the radio-frequency transmissions to 433MHz
The configuration such as frequency range, channel, power of module.
This acquisition device be equipped with special temperature-compensation circuit, have output stabilization, smooth running, it is easy to install and use,
The advantages that precision is high, reproducible, the shortcomings that overcoming traditional mud weight sensor temperature drift in use, by work,
The switching of suspend mode two ways reaches attenuating power consumption, and extend battery uses the time.
Above-described is only a kind of embodiment of the utility model, it is noted that for the ordinary skill of this field
For personnel, without departing from the principle of this utility model, several variations and modifications can also be made, these also should be regarded as
Belong to the protection scope of the utility model.
Claims (7)
1. a kind of matched mud comprehensive parameters acquisition device of wireless composite logging, it is characterized in that:
It includes at least:
Temperature sensing unit, for collecting the temperature signal in mud；
Density sensing unit, the minute-pressure capacitance sensor including two with difference in height, for collecting different height in mud
Pressure signal；
Conductivity sensors unit, including conductivity coil, for collecting the concentration for detecting metal ion in mud in mud；
The pressure signal of control unit, concentration signal and the acquisition of density sensing unit to the acquisition of conductivity sensors unit calculates,
Concentration signal and pressure signal are compensated by the temperature signal that temperature sensing unit acquires, obtain consequential signal.
2. the matched mud comprehensive parameters acquisition device of wireless composite logging according to claim 1, it is characterized in that:
Temperature sensing unit includes thermistor.
3. the matched mud comprehensive parameters acquisition device of wireless composite logging according to claim 2, it is characterized in that:
Two minute-pressure capacitance sensors are separately fixed on guide rod, and two minute-pressure capacitance sensor distributing positions have difference in height；
Thermistor is also secured on guide rod.
4. the matched mud comprehensive parameters acquisition device of wireless composite logging according to claim 1, it is characterized in that:
It further include wireless transmission unit, for sending out the calculated consequential signal of control unit by the way of wireless transmission
It goes.
5. the matched mud comprehensive parameters acquisition device of wireless composite logging according to claim 4, it is characterized in that:
Described control unit also controls temperature sensing unit, density sensing unit, wireless transmission unit and carries out work or suspend mode.
6. the matched mud comprehensive parameters acquisition device of wireless composite logging according to claim 1, it is characterized in that:
The temperature signal amplification of collection is input to control unit by prime amplifying unit by temperature sensing unit.
7. the matched mud comprehensive parameters acquisition device of wireless composite logging according to claim 6, it is characterized in that:
ADC chip module is equipped with before in control unit, the temperature signal that temperature sensing unit is collected is defeated by prime amplifying unit
Processing calculating is carried out after entering ADC chip module；After the pressure signal input ADC chip module that density sensing unit is collected
Reason calculates.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820972142.8U CN208777988U (en) | 2018-06-23 | 2018-06-23 | The matched mud comprehensive parameters acquisition device of wireless composite logging |
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| CN201820972142.8U CN208777988U (en) | 2018-06-23 | 2018-06-23 | The matched mud comprehensive parameters acquisition device of wireless composite logging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590645A (en) * | 2018-06-23 | 2018-09-28 | 蚌埠赛英电子科技发展有限公司 | The mating mud comprehensive parameters harvester of wireless composite logging |
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- 2018-06-23 CN CN201820972142.8U patent/CN208777988U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590645A (en) * | 2018-06-23 | 2018-09-28 | 蚌埠赛英电子科技发展有限公司 | The mating mud comprehensive parameters harvester of wireless composite logging |
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