CN102494848B - Method for monitoring leakage of geological stored carbon dioxide and device thereof - Google Patents

Abstract

The invention discloses a method for monitoring leakage of geological stored carbon dioxide and a device thereof, which directly monitor leakage flux of the carbon dioxide by on-line analyzing the correlation between the oxygen and the carbon dioxide in the atmosphere and on-line deducting the background interference density. The monitoring device mainly includes a data monitoring unit, a data transmitting unit, a data processing unit and a monitor center, and a sample cell for directly monitoring the leakage of the carbon dioxide is designed. The method has the advantages of on-line abnormality identification, direct leakage flux monitoring, wide monitoring range, high monitoring precision and small influence range of temperature and pressure.

Description

A kind of method and device of monitoring geological storage carbon dioxide leakage

Technical field

The invention belongs to carbon dioxide leakage monitoring technical field, relate to a kind of method and device of monitoring geological storage carbon dioxide leakage.

Background technology

Along with the impact that the earth " greenhouse effect " produces is more and more stronger, every country all starts to pay close attention to greenhouse gas emission, and carbon dioxide is exactly one of topmost greenhouse gases wherein.In order to reduce CO2 emission, every country researcher and technician have proposed a variety of methods.In recent years, a kind of new technology starts to be subject to researchers' concern, i.e. collecting carbonic anhydride and Plugging Technology Applied (CCS technology).This method is first in CO2 emission source, such as power plant, the carbon dioxide of trapping discharge, then the carbon dioxide of trapping is transported to and seals place up for safekeeping, such as abendoned oil gas well, discarded colliery, ocean and other places, utilize carbon dioxide Plugging Technology Applied that carbon dioxide is sealed up for safekeeping under geological stratification or ocean deepwater layer with supercriticality, and carry out corresponding seal approach.After carbon dioxide generation physics in geological stratification, chemical reaction, can be fixed in geological stratification, and in some discarded places such as Oil/gas Well, colliery, can also promote oil gas or coal-seam gas regeneration, improve energy utilization rate.

But, as a new technique in research and development just, there is the several factors consideration of still needing, wherein the accurate monitoring to sequestration of carbon dioxide seepage and leakage and forecast are exactly a difficult problem.Because the carbon dioxide that in atmosphere, carbon dioxide itself contains higher concentration and its temporal evolution are larger, the trace leaking in carbon sequestration project or a small amount of carbon dioxide may be submerged in the middle of the complicated background concentration changing, and are difficult to monitor.Up to the present, researchers have proposed a lot of methods, mainly contain the relevant monitoring method (EC method) of vorticity, well logging microearthquake monitoring method, gather the methods such as air chamber method, laser radar, tracer agent tracking monitor method, carbon stable isotope monitoring.These methods have advantages of separately, but exist following shortcoming to restrict its application in the middle of carbon dioxide geologic sequestration leakage monitoring.

1) cannot realize the identification of online leakage abnormal signal.At present conventional method is before the geological storage project implementation, to obtain mass data to be worth as a setting, monitor after a period of time sealing up for safekeeping after the project implementation, with seal up for safekeeping before the background value that obtains contrast identification.This judgement relatively lags behind, and such as EC method just need to be monitored the data in one year cyclic vibration before sealing up for safekeeping, sealing continuous monitoring one annual data after enforcement up for safekeeping, then two annual datas is compared, and just can judge whether to leak; Other method is generally so.

2) most of method all cannot directly obtain leakage flux value.Because leakage flux density can directly be reflected in the accumulation degree of the carbon dioxide of the leakage in a certain region, can easily estimate actual leakage rate by algorithm.But at present except some flux monitoring methods, other monitoring method can only obtain judging whether carbon dioxide leakage the correlation parameter leaking occurs, and qualitatively judges, and cannot obtain leakage flux, such as Hyper spectral Imaging, laser radar, well logging micro-seismic method etc.However, current existing flux method, as gather air chamber method, and belonging to point measurement, cannot within the scope of large area, apply; Although EC method can be monitored the flux density in wide scope, cannot realize online abnormal signal identification.

3) most of method belongs to point measurement method, and monitoring range is little, if the region of monitor large-area needs a lot of apparatus, cost is too high.In existing method, EC method can be monitored m ²-km ²gas flux density in scope, but directly monitoring carbon dioxide leakage is subject to certain limitation;

4) a lot of method apparatus complexity, costlinesses that propose, need geofault scanner etc. such as isotope tracking needs mass spectrometer, complicated optical device, the well logging micro-seismic method of laser radar needs, cannot popularization and application in Industrial Engineering.

Based on these defects, research and development can on-line identification leakage extremely, directly obtain leakage flux, and simple, the lower-cost geological storage carbon dioxide leakage of instrument monitoring device is very necessary.

Summary of the invention

The problem that the present invention solves is to provide a kind of method and device of monitoring geological storage carbon dioxide leakage, and by oxygen, carbon dioxide correlativity in on-line analysis air, online background correction is disturbed concentration, is achieved direct carbon dioxide leakage flux monitoring.

The present invention is achieved through the following technical solutions:

A method of monitoring geological storage carbon dioxide leakage, comprises the following steps:

The concentration of the carbon dioxide by continuous monitoring region to be measured concentration with oxygen calculate the variable quantity of the concentration of carbon dioxide variable quantity with the concentration of oxygen and the instantaneous flux of oxygen and carbon dioxide exchange than S with the oxygen carbon of oxygen,

Taking t as monitoring time step-length, the monitoring background using the monitoring in previous time step as current time step-length, is compared to the exchange of background oxygen carbon with the averaged oxygen carbon exchange in previous time step and compares S ₀, to be compared to S when the exchange of the averaged oxygen carbon in step-length before the time ₁;

Carbon dioxide leakage flux F before current time in step-length _lcalculate by following formula:

$F_l=(\frac{1}{S_1}-\frac{1}{S_0})(-F_{O_2})$

Wherein, for the instantaneous flux of the oxygen in previous time step.

The impact of fluctuation, atmospheric temperature and the humidity of vertical velocity is also considered in the calculating of the described instantaneous flux of oxygen, calculates by following formula:

$F_{O_2}=\stackrel{\‾}{w^{\′}{\mathrm{\ρ}}_{O_2}^{\′}}+\frac{m_a}{m_v}\frac{\stackrel{\‾}{{\mathrm{\ρ}}_{O_2}}\stackrel{\‾}{w^{\′}{\mathrm{\ρ}}_v^{\′}}}{\stackrel{\‾}{{\mathrm{\ρ}}_a}}+(1+\frac{\stackrel{\‾}{{\mathrm{\ρ}}_v}{m}_a}{\stackrel{\‾}{{\mathrm{\ρ}}_a}{m}_v})\frac{\stackrel{\‾}{w^{\′}{T}^{\′}}\stackrel{\‾}{{\mathrm{\ρ}}_{O_2}}}{\stackrel{\‾}{T}}$

Wherein, for the instantaneous flux of oxygen, ${\mathrm{\ρ}}_{O_2}=2.24\×{10}^{-8}\×C_{O_2}{M}_{O_2}(\mathrm{kg}\·m^{-3}),$ for oxygen concentration, for oxygen molal weight; W ' is the fluctuation of vertical velocity, ρ _afor the density p of dry air _vfor the density of water in air steam; m _aand m _vbe respectively the molal weight of dry air and water vapor; T is monitoring point place environment temperature.

Described F _lcalculate by following formula:

$(\frac{1}{S_1}-\frac{1}{S_0})=(\frac{d{C}_{{\mathrm{CO}}_2}}{d{C}_{O_2}}{|}_t-\frac{d{C}_{{\mathrm{CO}}_2}}{d{C}_{O_2}}{|}_{t-1});$

$F_l=(\frac{d{C}_{{\mathrm{CO}}_2}}{d{C}_{O_2}}{|}_t-\frac{d{C}_{{\mathrm{CO}}_2}}{d{C}_{O_2}}{|}_{t-1})(-F_{O_2});$

Wherein t be unit minute, hour or day time step.

A device of monitoring geological storage carbon dioxide leakage, comprising:

Data Detection unit, comprises the temperature humidity probe of three-D ultrasonic anemoscope, detection atmospheric temperature and the humidity of the fluctuation of detection of vertical wind speed, and detects the gas sampling probe of the concentration of oxygen, carbon dioxide;

Data transmission unit, the data that image data detecting unit gathers are also transmitted;

Data processing unit, receive the data of data transmission unit transmission, calculating carbon dioxide by the concentration of carbon dioxide and the concentration of oxygen compares with the oxygen carbon exchange of oxygen, the instantaneous flux that calculates again oxygen in conjunction with the data of fluctuation, atmospheric temperature and the humidity of vertical velocity, finally calculates carbon dioxide leakage flux;

Monitoring center, receives the result of calculation of data processing unit and shows.

Described three-D ultrasonic anemoscope, temperature humidity probe and gas sampling probe are arranged on monitoring tower, are all 1:50～500 apart from the distance on ground with monitoring radius ratio.

Described three-D ultrasonic anemoscope, temperature humidity probe and gas sampling probe upwind are installed, and distance is each other no more than 1m, and three-D ultrasonic anemoscope is arranged on the top of temperature humidity probe and gas sampling probe.

Described gas sampling probe comprises detection air chamber, the head that detects air chamber is connected with airscoop shroud, the center of airscoop shroud is provided with air intake opening, and a side that detects air chamber afterbody is provided with gas outlet, detects in air chamber and is provided with gas concentration lwevel detecting sensor and oxygen concentration detecting sensor.

Described airscoop shroud is semisphere, and air intake opening is installed against the wind; Between airscoop shroud and detection air chamber, be provided with filter screen.

Described carbon dioxide sensor comprises symmetrical infrared carbon dioxide sensor emission end and the infrared carbon dioxide sensor receiving end of installing, and oxygen sensor is electrochemical sensor, is arranged on gas outlet;

The afterbody that detects air chamber is also provided with clean-up port.

Described data transmission unit will detect data transmission to data processing unit by wired or wireless mode.

Compared with prior art, the present invention has following useful technique effect:

1) method of monitoring geological storage carbon dioxide leakage provided by the invention, absorb and discharge rule based on carbon dioxide and oxygen in atmosphere, by oxygen, carbon dioxide correlativity in continuous on-line analysis air, the especially monitoring of the oxygen carbon of carbon dioxide and oxygen exchange ratio; And because oxygen background flux before and after leaking generation does not change, therefore can monitor online background correction carbon dioxide by oxygen flux to change, be achieved direct carbon dioxide leakage flux monitoring;

2) because line computation be the rate of change of oxygen and gas concentration lwevel or flux, it is high that monitoring accuracy is monitored more separately gas concentration lwevel; Meanwhile, because utilization is the ratio of gas parameter, therefore temperature and pressure is less on the impact of result, has further improved the precision of monitoring, has reduced the complicacy of monitoring device;

3) can directly obtain the leakage flux of carbon dioxide, further realize determining of actual leakage rate by algorithm;

4) method provided by the present invention and device can also be applied in the middle of the emission reduction efficiency research of carbon dioxide discharge-reduction project.

Brief description of the drawings

Fig. 1 is aerial oxygen/carbon dioxide absorption of not considering the leakage of geological storage carbon dioxide, the system schematic of discharge;

Fig. 2 is aerial oxygen/carbon dioxide absorption of considering geological storage carbon dioxide leakage, the system schematic of discharge;

Fig. 3 is the system connection diagram of the device of monitoring geological storage carbon dioxide leakage;

Fig. 4 is the structural representation of a kind of specific implementation of Data Detection unit; Wherein, 1 is monitoring tower, and 2 is three-D ultrasonic anemoscope, and 3 is gas sampling probe, and 4 is temperature humidity probe, and 5 is power supply;

Fig. 5 is the structural representation of a kind of specific implementation of gas sampling probe.Wherein, 301 for detecting air chamber, and 302 is airscoop shroud, and 303 is air intake opening, and 304 is filter screen, and 305 is infrared carbon dioxide sensor emission end, and 306 is infrared carbon dioxide sensor receiving end, and 307 is oxygen sensor, and 308 is gas outlet, and 309 is clean-up port.

Embodiment

Below in conjunction with specific embodiment and accompanying drawing, the present invention is described in further detail, and the explanation of the invention is not limited.

Method and the device of monitoring geological storage carbon dioxide leakage provided by the invention are based on oxygen in ecologic environment and carbon dioxide principle of mobile equilibrium.As shown in Figure 1, in not considering geological storage carbon dioxide leakage, the absorption of the carbon dioxide and oxygen in terrestrial ecosystems and emission source are mainly made up of the metabolism of biosystem, these two parts of burning of fossil fuel.Wherein the assimilation of biosystem consumes carbon dioxide produce oxygen, dissimilation oxygen consumed and produce carbon dioxide.These two processes interact and make in whole biosystem metabolic processes oxygen and carbon dioxide exchange ratio (hereinafter to be referred as oxygen carbon exchange ratio ,-Δ O ₂/ Δ CO ₂) keeping mobile equilibrium, its value is about 1.1.The combustion process of fossil fuel is understood oxygen consumed and is produced carbon dioxide, and this process determines atmospheric oxygen and carbon dioxide content.The ratio that wherein consumes oxygen and generation carbon dioxide is decided by component and the burning degree of fossil fuel.This combustion process is irreversible, thereby on long terms, the carbon dioxide in environment can increase, and oxygen can reduce.But in short time interval, fuel element and atmospheric environment can remain unchanged, so the oxygen carbon exchange rate of combustion process is metastable.Can obtain following formula 1 and 2.

$F_{{\mathrm{CO}}_2}=F_f-F_b---\left(1\right)$

$F_{O_2}=-R_f{F}_f+R_b{F}_b---\left(2\right)$

Wherein with (molm ^-2s ^-1) be CO total in Atmospheric models ₂and O ₂flux; F _fand F _b(molm ^-2s ^-1) be respectively the carbon dioxide flux in combustion of fossil fuel process and bio-metabolic process; R _fand R _bo in these two processes ₂and CO ₂exchange rate.

If said system, near geological storage project, is considered carbon dioxide leakage, as shown in Figure 2, the emission source of carbon dioxide has increased a carbon dioxide leakage source.Meanwhile, formula 1 will change as formula 3:

$F_{{\mathrm{CO}}_2}=F_f-F_b+F_1---\left(3\right)$

This formula the right has increased carbon dioxide leakage flux F ₁this, due to formula 3 the right front two all relevant to oxygen and be linear dependence, and Section 3 is leaked item and oxygen is irrelevant, if therefore leak and occur, leak item by changing correlationship originally stable between oxygen and carbon dioxide, further destroy its correlativity or form new correlationship.

According to above three formulas, finally obtain the computing formula about leakage rate:

$F_l=(\frac{1}{S_1}-\frac{1}{S_0})(-F_{O_2})---\left(4\right)$

Wherein, F _lbe called apparent leakage rate (apparent leakage flux, ALF), its unit is molm ^-2s ^-1, carbon dioxide leakage amount, i.e. carbon dioxide leakage flux in the representation unit square measure time; S ₀be called background oxygen carbon exchange ratio, S ₁for current oxygen carbon exchange ratio.

This formula comprises two parts: Part I the variation of front and back oxygen carbon exchange ratio is leaked in representative, and in the ideal case, if do not leaked, this value equals 0; After leaking, this value will increase; Part II represent the trend of carbon dioxide in background, it becomes negative correlation with oxygen.Because oxygen flux before and after leaking generation does not change, therefore can monitor online background correction carbon dioxide by oxygen flux and change.

In the time specifically monitoring, the variation of Part I oxygen carbon exchange ratio, the concentration of the carbon dioxide by continuous monitoring region to be measured concentration with oxygen calculate the variable quantity of the concentration of carbon dioxide variable quantity with the concentration of oxygen and the oxygen carbon exchange of the instantaneous flux of oxygen and carbon dioxide and oxygen is than S:

$S=\mathrm{\Δ}{C}_{O_2}/\mathrm{\Δ}{C}_{{\mathrm{CO}}_2}---\left(5\right)$

In the time monitoring continuously, taking t as monitoring time step-length, time step can be taking unit minute, hour, day as step interval as required.Monitoring background using the monitoring in previous time step as current time step-length, compares S by the oxygen carbon exchange as a setting of the averaged oxygen carbon ratio in previous time step ₀, be compared to S with the averaged oxygen carbon exchange in current time step-length ₁; Utilize online least square regression (LSR) algorithm to calculate oxygen and carbon dioxide linear regression model (LRM) scale-up factor in adjacent time step and obtain S ₀and S ₁thereby, obtain with following formula:

$(\frac{1}{S_1}-\frac{1}{S_0})=(\frac{{\mathrm{dC}}_{{\mathrm{CO}}_2}}{{\mathrm{dC}}_{O_2}}{|}_t-\frac{{\mathrm{dC}}_{{\mathrm{CO}}_2}}{{\mathrm{dC}}_{O_2}}{|}_{t-1})---\left(6\right)$

(4) formula just can be transformed to so:

$F_l=(\frac{{\mathrm{dC}}_{{\mathrm{CO}}_2}}{{\mathrm{dC}}_{O_2}}{|}_t-\frac{{\mathrm{dC}}_{{\mathrm{CO}}_2}}{{\mathrm{dC}}_{O_2}}{|}_{t-1})(-F_{O_2})---\left(7\right)$

Part II ( ), be mainly to realize by the detection of oxygen flux, calculate with the instantaneous flux of the oxygen in previous time step, thereby obtain the carbon dioxide leakage flux in current time step-length.

And in the time specifically carrying out the detection of gas flux, this method is utilized vorticity relative theory gas-monitoring flux, can realize the flux density in wide scope, its monitoring range can reach m ²-km ², and adjust in real time coordinates computed, and make coordinates computed consistent with wind direction, the vertical velocity fluctuation finally obtaining is irrelevant with horizontal wind speed, so be not subject to wind direction variable effect.Its ultimate principle is according to Reynolds average rule, and turbulent fluid such air is defined as to a mean state amount at any moment mobile with depart from average undulate quantity x ' sum, average magnitude can be separated from entire amount with undulate quantity, then mainly study the fluctuation situation of measurand, its basic calculating formula is:

$F=\stackrel{\‾}{w^{\′}{c}^{\′}}---\left(8\right)$

F is gas flux density (molm ^-2s ^-1), w ' is the fluctuation (ms of vertical velocity ^-1), c ' is gas concentration fluctuation (molm ^-3);

Temperature humidity probe is used for atmospheric sounding temperature and humidity, and to revise the impact of temperature and humidity on final gas flux value, conventional calculating gas flux correction formula is:

$F_{O_2}=\stackrel{\‾}{w^{\′}{\mathrm{\ρ}}_{O_2}^{\′}}+\frac{m_a}{m_v}\frac{\stackrel{\‾}{{\mathrm{\ρ}}_{O_2}}\stackrel{\‾}{w^{\′}{\mathrm{\ρ}}_v^{\′}}}{\stackrel{\‾}{{\mathrm{\ρ}}_a}}+(1+\frac{\stackrel{\‾}{{\mathrm{\ρ}}_v}{m}_a}{\stackrel{\‾}{{\mathrm{\ρ}}_a}{m}_v})\frac{\stackrel{\‾}{w^{\′}{T}^{\′}}\stackrel{\‾}{{\mathrm{\ρ}}_{O_2}}}{\stackrel{\‾}{T}}---\left(9\right)$

Wherein, ${\mathrm{\ρ}}_{O_2}=2.24\×{10}^{-8}\×C_{O_2}{M}_{O_2}(\mathrm{kg}\·m^{-3}),$ for oxygen concentration (ppm); for oxygen molal weight (gmol ^-1); for the instantaneous flux (molm of oxygen ²s ^-1); W ' is the fluctuation (ms of vertical velocity ^-1); ρ _a, ρ _vbe respectively the density (kgm of dry air and water in air steam ^-3), changed by its reflection atmospheric humidity; m _aand m _vbe respectively the molal weight (gmol of dry air and water vapor ^-1); T is monitoring point place environment temperature (K).

Based on said method, referring to Fig. 3, provide a kind of device of monitoring geological storage carbon dioxide leakage, comprising:

Data Detection unit, comprises the temperature humidity probe of three-D ultrasonic anemoscope, detection atmospheric temperature and the humidity of the fluctuation of detection of vertical wind speed, and detects the gas sampling probe of the concentration of oxygen, carbon dioxide;

Data transmission unit, the data that image data detecting unit gathers are also transmitted;

Data processing unit, receive the data of data transmission unit transmission, calculating carbon dioxide by the concentration of carbon dioxide and the concentration of oxygen compares with the oxygen carbon exchange of oxygen, the instantaneous flux that calculates again oxygen in conjunction with the data of fluctuation, atmospheric temperature and the humidity of vertical velocity, finally calculates carbon dioxide leakage flux;

Monitoring center, receives the result of calculation of data processing unit and shows.Exceed certain level if apparent leakage amount abnormity increases, show to have to leak to occur.

Referring to Fig. 4, being embodied as of concrete Data Detection unit: three-D ultrasonic anemoscope 2, temperature humidity probe 4 and gas sampling probe 3 are arranged on monitoring tower 1, and power supply 5 provides power supply;

Three-D ultrasonic anemoscope, temperature humidity probe and gas sampling probe upwind are installed, three-D ultrasonic anemoscope outline is higher than sampling probe and humiture probe setting height(from bottom), three should try one's best near (distance is each other no more than 1m) to ensure the consistance of sampling, depend on monitoring range and topographic features apart from the distance on ground, general is 1:50～500 with monitoring radius ratio; Sampling probe air intake opening is towards anemoscope position.

Referring to Fig. 5, gas sampling probe comprises detection air chamber 301, the head that detects air chamber 301 is connected with airscoop shroud 302, airscoop shroud 302 center is provided with air intake opening 303, a side that detects air chamber 301 afterbodys is provided with gas outlet 308, detects in air chamber 301 and is provided with gas concentration lwevel detecting sensor and oxygen concentration detecting sensor; Carbon dioxide sensor comprises symmetrical infrared carbon dioxide sensor emission end 305 and the infrared carbon dioxide sensor receiving end 306 of installing, oxygen sensor is electrochemical sensor, be arranged on gas outlet 308, the afterbody that detects air chamber 301 is also provided with clean-up port 309.

And airscoop shroud 302 is designed to semisphere, air intake opening is installed against the wind; Between airscoop shroud 302 and detection air chamber, 301 are provided with filter screen 304.

When installation, air intake opening is installed against the wind, and anemoscope rotates and is also conducive to air inlet.Airscoop shroud is designed to half spherical model, avoids gas to form obvious eddy current at air intake opening, and impact is measured.Filter screen is installed between airscoop shroud and sensing chamber and is affected monitoring result with solid sundries in preventing air.Gas outlet is arranged on sensor one side, and its structural design makes gas flow be conducive to sensor to contact with tested gas.The cleaning eye that can open and seal is set, so that probe is cleared up in bottom.

Described data transmission unit will detect data transmission to data processing unit by wired or wireless mode.Data transmission can adopt wired transmission, such as RS485; Also can adopt wireless transmissioning mode, this load mode need to arrange special wireless base station apparatus at the scene, at data receiver, wireless reception device is set, and the data that receive re-send to data processing unit and process.

Claims (9)

1. a method of monitoring geological storage carbon dioxide leakage, is characterized in that, comprises the following steps:

The concentration of the carbon dioxide by continuous monitoring region to be measured concentration with oxygen calculate the variable quantity of the concentration of carbon dioxide variable quantity with the concentration of oxygen and the instantaneous flux of oxygen and carbon dioxide exchange than S with the oxygen carbon of oxygen,

Taking t as monitoring time step-length, the monitoring background using the monitoring in previous time step as current time step-length, is compared to the exchange of background oxygen carbon by the averaged oxygen carbon exchange in previous time step and compares S ₀, be compared to S with the averaged oxygen carbon exchange in current time step-length ₁;

Carbon dioxide leakage flux F before current time in step-length _lcalculate by following formula:

$F_l=(\frac{1}{S_1}-\frac{1}{S_0})(-F_{O_2})$

Wherein, for the instantaneous flux of the oxygen in previous time step.

2. the method for monitoring geological storage carbon dioxide leakage as claimed in claim 1, is characterized in that, described F _lcalculate by following formula:

$(\frac{1}{S_1}-\frac{1}{S_0})=(\frac{{\mathrm{dC}}_{{\mathrm{CO}}_2}}{{\mathrm{dC}}_{O_2}}{|}_t-\frac{{\mathrm{dC}}_{C{O}_2}}{d{C}_{O_2}}{|}_{t-1});$

$F_l=(\frac{{\mathrm{dC}}_{{\mathrm{CO}}_2}}{{\mathrm{dC}}_{O_2}}{|}_t-\frac{{\mathrm{dC}}_{C{O}_2}}{d{C}_{O_2}}{|}_{t-1})(-F_{O_2});$

Wherein t is unit minute step-length.

3. a device of monitoring geological storage carbon dioxide leakage, is characterized in that, comprising:

Data Detection unit, comprises the temperature humidity probe of three-D ultrasonic anemoscope, detection atmospheric temperature and the humidity of the fluctuation of detection of vertical wind speed, and detects the gas sampling probe of the concentration of oxygen, carbon dioxide;

Data transmission unit, the data that image data detecting unit gathers are also transmitted;

Data processing unit, receive the data of data transmission unit transmission, calculating carbon dioxide by the concentration of carbon dioxide and the concentration of oxygen compares with the oxygen carbon exchange of oxygen, the instantaneous flux that calculates again oxygen in conjunction with the data of fluctuation, atmospheric temperature and the humidity of vertical velocity, finally calculates carbon dioxide leakage flux;

Monitoring center, receives the result of calculation of data processing unit and shows.

4. the device of monitoring geological storage carbon dioxide leakage as claimed in claim 3, it is characterized in that, described three-D ultrasonic anemoscope, temperature humidity probe and gas sampling probe are arranged on monitoring tower, are all 1:50～500 apart from the distance on ground with monitoring radius ratio.

5. the device of monitoring geological storage carbon dioxide leakage as claimed in claim 3, it is characterized in that, described three-D ultrasonic anemoscope, temperature humidity probe and gas sampling probe upwind are installed, distance is each other no more than 1m, and three-D ultrasonic anemoscope is arranged on the top of temperature humidity probe and gas sampling probe.

6. the device of monitoring geological storage carbon dioxide leakage as claimed in claim 3, it is characterized in that, described gas sampling probe comprises detection air chamber, the head that detects air chamber is connected with airscoop shroud, the center of airscoop shroud is provided with air intake opening, a side that detects air chamber afterbody is provided with gas outlet, detects in air chamber and is provided with gas concentration lwevel detecting sensor and oxygen concentration detecting sensor.

7. the device of monitoring geological storage carbon dioxide leakage as claimed in claim 6, is characterized in that, described airscoop shroud is semisphere, and air intake opening is installed against the wind; Between airscoop shroud and detection air chamber, be provided with filter screen.

8. the device of monitoring geological storage carbon dioxide leakage as claimed in claim 6, it is characterized in that, described gas concentration lwevel detecting sensor comprises symmetrical infrared carbon dioxide sensor emission end and the infrared carbon dioxide sensor receiving end of installing, oxygen concentration detecting sensor is electrochemical sensor, is arranged on gas outlet;

The afterbody that detects air chamber is also provided with clean-up port.

9. the device of monitoring geological storage carbon dioxide leakage as claimed in claim 3, is characterized in that, described data transmission unit will detect data transmission to data processing unit by wired or wireless mode.