CN208443687U - The matched mud density acquisition device of wireless composite logging - Google Patents
The matched mud density acquisition device of wireless composite logging Download PDFInfo
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- CN208443687U CN208443687U CN201820972138.1U CN201820972138U CN208443687U CN 208443687 U CN208443687 U CN 208443687U CN 201820972138 U CN201820972138 U CN 201820972138U CN 208443687 U CN208443687 U CN 208443687U
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Abstract
The utility model gives a kind of matched mud density acquisition device of wireless composite logging, includes at least: density sensing unit, the minute-pressure capacitance sensor including two with difference in height, for collecting the pressure signal of different height in mud；Consequential signal is calculated by the signal that temperature sensing unit and density sensing unit acquire in control unit.The matched mud density acquisition device of this wireless composite logging replaces original differential pressure diaphragm using minute-pressure capacitance sensor, realizes and increases sensor anti-interference ability, portable construction, effect easy to maintenance.
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 close
Spend acquisition device.
Background technique
Mud weight sensor is a kind of novel sensor for measuring wellbore mud density.To density in drilling process
It is required that having great significance, it is to ensure that quick, balance, high-quality and safety drilling well, while preventing oil gas dirty for protection oil-gas Layer
It is infected with great meaning.So to reinforce all along in drilling process mud density monitoring, with guarantee drilling well it is smooth into
Row.It is simple for the temperature drift of sensor, anti-interference ability, impact resistance, carrying portable, installation since site environment is complicated severe
It is more demanding.
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 existing mud weight sensor uses differential pressure diaphragm as acquisition component, by squeezing silicone oil, so that poor
Small capacitance variations enhanced processing is become the output of 4 ~ 20mA current signal by the variation of piezoelectricity capacitance；Existing mud density passes
Sensor also needs to cooperate with other temperature sensor, when use due to silicone oil be affected by temperature it is larger so that collected letter
Number temperature drift is big.The oil-filled part volume of differential pressure diaphragm is larger, heavy, and diaphragm is fragile, is easily impacted bad, differential pressure by mud in mud pit
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 strong antijamming capabilities, the wireless composite of portable construction
The matched mud density acquisition device of logging.
It is adopted in order to solve the above technical problems, the utility model provides a kind of matched mud density of wireless composite logging
Acquisition means include at least:
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；
Consequential signal is calculated by the signal that temperature sensing unit and density sensing unit acquire in control unit.
With such a structure, the matched mud density acquisition device of this wireless composite logging is passed using minute-pressure capacitor
Sensor replaces original differential pressure diaphragm, realizes and increases sensor anti-interference ability, portable construction, effect easy to maintenance.
The matched mud density acquisition device of this wireless composite logging can obtain density, the temperature at a certain moment in real time
Degree evidence compensates the density signal measured using temperature signal this moment, original mutually indepedent sensor is overcome to deposit
Temperature drift problem, guarantee measurement precision.
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 density 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
Density acquisition device is referred to as this density acquisition device.
This density acquisition device further includes temperature sensing unit, and temperature sensing unit includes thermistor, for collecting mud
Temperature signal in slurry；With such a structure, thermistor meets the design requirement of this density acquisition device, realizes that this is close
Spending acquisition device reduces the effect of Sensor temperature drift.
Two minute-pressure capacitance sensors of this density acquisition device are separately fixed on guide rod, two minute-pressure capacitance sensors
Distributing position has difference in height；Thermistor is also secured on guide rod；With such a structure, minute-pressure capacitance sensor and heat
The layout of quick resistance is more reasonable, is easy to use.
This density acquisition device further includes wireless transmission unit, for the calculated consequential signal of control unit to be used nothing
The mode of line transmission is sent；With such a structure, this density acquisition device and outer may be implemented in wireless transmission unit
The suitable environment of this density acquisition device has been expanded in the connection of portion's equipment.
The control unit of this density acquisition device also controls temperature sensing unit, density sensing unit, wireless transmission unit
Carry out work or suspend mode；With such a structure, this density acquisition device can be between working condition and dormant state
Switching, reduces the power consumption of this density acquisition device, and realize the high frequency sound effect of this density acquisition device.
The temperature signal of collection is amplified input by prime amplifying unit by the temperature sensing unit of this density acquisition device
To control unit；With such a structure, the model between temperature sensing unit and control unit is facilitated to transmit.
ADC chip module is equipped with before in the control unit of this density acquisition device, the temperature letter that temperature sensing unit is collected
Number by prime amplifying unit input ADC chip module after carry out processing calculating；The pressure signal that density sensing unit is collected is defeated
Processing calculating is carried out after entering ADC chip module.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of this density acquisition device embodiment.
Fig. 2 is the functional block diagram of this density acquisition device embodiment.
Specific embodiment
As illustrated in fig. 1 and 2
This density acquisition device includes temperature sensing unit, density sensing unit, control unit, guide rod 1, prime amplification list
Member and wireless transmission unit.
Temperature sensing unit is commercially available PT100 thermistor 3, and density sensing unit includes two commercially available minute-pressure capacitors
Sensor 4 uses MSP430 single-chip microcontroller in control unit, and 24 ADC chips are equipped with before single-chip microcontroller, and prime amplifying unit is one group
General amplifying circuit, wireless transmission unit use the radiofrequency emitting module of 433MHz, for calculating the single-chip microcontroller of control unit
Consequential signal out is sent by the way of wireless transmission.
PT100 thermistor 3 and two minute-pressure capacitance sensors 4 are respectively by laser welding on guide rod 1, two minute-pressures
About 4 capacitance sensor is distributed, and two minute-pressure capacitance sensors 4 are kept fixed the difference in height of 300mm, two minute-pressure capacitance sensings
Device 4 collects the pressure signal of different height in mud, and PT100 thermistor 3 is between two minute-pressure capacitance sensors 4,
The position of PT100 thermistor 3 more can accurately provide temperature signal, and guide rod 1 is interior, and there are the cavitys passed through for conducting wire.
Power supply, prime amplifying unit, control unit and wireless transmission unit are all disposed on integrated circuit board, integrated circuit
Plate is fixed in shell 2, and shell 2 and guide rod seal between 1 upper end, PT100 thermistor 3 and two minute-pressure capacitance sensors 4
It is connect respectively by conducting wire with integrated circuit board, conducting wire is by the cavity in guide rod 1.
The temperature signal that PT100 thermistor 3 is collected is by being input to control after prime amplifying unit and ADC chip module
In the single-chip microcontroller of unit；The pressure signal that two minute-pressure capacitance sensors 4 are collected is by being input to control unit after ADC chip
In single-chip microcontroller.
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 of the different densities mud in the case where asking money apart from what is fixed is sensed, (density algorithm principle utilizes P=ρ by density algorithm
Gh formula) computation of mud density.
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, and 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, pressure signal are transmitted to single-chip microcontroller after ADC chip, and the signal of PT100 thermistor 3 is also transmitted to single-chip microcontroller, at one section
Between after (such as 100 milliseconds), after PT100 thermistor 3 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), single-chip microcontroller closing temperature sensing unit, density sensing unit, prime amplifying unit, wireless transmission unit are realized whole
The suspend mode of this density acquisition device reduces energy consumption (dormancy time can be 800 milliseconds), and so on, acquires this density
Device has the advantages that high frequency sound.
This density acquisition device is equipped with special temperature-compensation circuit, has output stabilization, smooth running, uses installation side
Just, the advantages that precision is high, reproducible, passes through work at the shortcomings that overcoming traditional mud weight sensor temperature drift in use
The switching of work, suspend mode two ways reaches attenuating power consumption, and extend battery uses the time.
All configuration words of single-chip microcontroller are all that wireless module is passed to by SPI interface, realize the radio-frequency transmissions mould to 433MHz
The configuration such as frequency range, channel, power of block.
This density acquisition device further includes battery power supply unit, accesses Voltage stabilizing module using lithium battery 3.6V, then leads to
It crosses ascending, descending pressure and is converted into stable 3.3V operating voltage, provide energy for whole device, it can be in cell voltage 2.8 ~ 3.6V model
The stable 3.3V of interior offer is enclosed, when cell voltage will be less than 2.8V, single-chip microcontroller issues low-voltage alarm as host computer, utilizes
Battery power supply unit is powered this density acquisition device.
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 density acquisition device of wireless composite logging, it is characterized in that:
It includes at least:
Density sensing unit, the minute-pressure capacitance sensor including two with difference in height, for collecting different height in mud
Pressure signal；
Consequential signal is calculated by the signal that density sensing unit acquires in control unit.
2. the matched mud density acquisition device of wireless composite logging according to claim 1, it is characterized in that:
It further include temperature sensing unit, temperature sensing unit includes thermistor, for collecting the temperature signal in mud.
3. the matched mud density 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 density 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 density 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 density 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 density 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201820972138.1U CN208443687U (en) | 2018-06-23 | 2018-06-23 | The matched mud density acquisition device of wireless composite logging |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820972138.1U CN208443687U (en) | 2018-06-23 | 2018-06-23 | The matched mud density acquisition device of wireless composite logging |
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| CN208443687U true CN208443687U (en) | 2019-01-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801847A (en) * | 2018-06-23 | 2018-11-13 | 蚌埠赛英电子科技发展有限公司 | The mating mud density harvester of wireless composite logging |
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2018
- 2018-06-23 CN CN201820972138.1U patent/CN208443687U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108801847A (en) * | 2018-06-23 | 2018-11-13 | 蚌埠赛英电子科技发展有限公司 | The mating mud density harvester of wireless composite logging |
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