CN115771709B - Carbon dioxide sealing method and system - Google Patents
Carbon dioxide sealing method and system Download PDFInfo
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Abstract
The invention discloses a carbon dioxide sealing and storing method and a system, which are characterized in that a geological model of a carbon dioxide sealing and storing area is established according to geological data and hydrologic conditions, and a carbon dioxide sealing and storing layer is determined; capturing carbon dioxide, entering supercooled water after passing through a pressurizing module and a cooling module to generate carbon dioxide hydrate, injecting the carbon dioxide hydrate into a closed container, then placing the closed container into a carbon dioxide seal storage layer, monitoring the temperature of the carbon dioxide seal storage layer by adopting a sensor, and adjusting the height of the closed container when the monitored temperature exceeds a first threshold value, so that the carbon dioxide hydrate is in a stable state. The carbon dioxide hydrate is generated and the sealing and storing device is arranged in a sealing container mode, so that the stability of exposure and sealing and storing is improved, and the safety of sealing and storing can be improved through simple parameter monitoring and position adjustment.
Description
Technical field:
the invention belongs to the field of computer data processing, and particularly relates to a carbon dioxide sealing method and system.
The background technology is as follows:
the geological sequestration of carbon dioxide gas refers to the transportation and injection of high-purity carbon dioxide gas into sequestration sites such as depleted hydrocarbon reservoirs, deep salty water layers, coal beds and the like through pipeline technology, and is a relatively effective and reliable sequestration mode at present. However, supercritical state is sealed and stored with much constraint of geological parameters, and the ground surface monitoring difficulty is high, and once leakage occurs, adverse effects can be caused on the ground surface.
However, carbon dioxide gas hydrate is a relatively specific envelope compound formed by water and carbon dioxide gas under low temperature and high pressure conditions. The carbon dioxide hydrate belongs to a type I hydrate, water molecules form a main body crystallization network by means of stronger hydrogen bonds, cavities in the network are filled with carbon dioxide gas molecules, and the carbon dioxide hydrate can be stably stored under low-temperature and high-pressure conditions.
The current late sealing and maintaining cost of depleted oil and gas reservoirs, deep salty water layers, coal beds and the like is high, the monitoring range is wide and difficult, and meanwhile, the sealing and storing equipment system is complex. Therefore, how to reduce the geological sequestration difficulty and the monitoring difficulty is a technical problem to be solved.
Disclosure of Invention
Aiming at the problems of wide target geological sequestration monitoring range and great difficulty, the invention provides a method for establishing a geological model of a carbon dioxide sequestration area according to geological data and hydrologic conditions, wherein the geological model of the carbon dioxide sequestration area comprises a brine layer; determining a carbon dioxide sealing storage layer according to the geological model of the carbon dioxide sealing storage area and screening conditions; calculating the mass of the carbon dioxide hydrate which is maximally stored in the carbon dioxide sealing storage layer according to the characteristic parameters of the carbon dioxide sealing storage layer; capturing carbon dioxide, passing through a pressurizing module and a cooling module, then entering supercooled water to generate carbon dioxide hydrate, and processing the carbon dioxide hydrate into spheres; and after the spherical carbon dioxide hydrate is injected into the closed container by adopting the injection module, the spherical carbon dioxide hydrate is placed into the carbon dioxide seal storage layer, meanwhile, the temperature of the carbon dioxide seal storage layer is monitored by adopting a sensor, and when the monitored temperature exceeds a first threshold value, the height of the closed container is adjusted, so that the carbon dioxide hydrate is in a stable state. According to the method, the proper reservoir region is screened by constructing the geological model of the carbon dioxide sealing and storing region, so that the safety before sealing and storing and the environmental consideration are improved. The carbon dioxide hydrate is generated and the sealing and storing device is arranged in a sealing container, so that the stability of exposure and sealing is improved, and meanwhile, the safety and the applicability of sealing and storing can be effectively improved through multi-condition monitoring and position adjustment.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a carbon dioxide sequestration method comprising:
S1, establishing a geological model of a carbon dioxide sealing area according to geological data and hydrologic conditions, wherein the geological model of the carbon dioxide sealing area comprises a brine layer;
s2, determining a carbon dioxide sealing storage layer according to a geological model of the carbon dioxide sealing storage area and screening conditions;
s3, calculating the mass of the maximum stored carbon dioxide hydrate in the carbon dioxide seal storage layer according to the characteristic parameters of the carbon dioxide seal storage layer;
S4, capturing carbon dioxide, passing through a pressurizing module and a cooling module, then entering supercooled water to generate carbon dioxide hydrate, and processing the carbon dioxide hydrate into spheres;
S5, injecting spherical carbon dioxide hydrate into a closed container by adopting an injection module, then placing the spherical carbon dioxide hydrate into the carbon dioxide seal storage layer, simultaneously adopting a sensor to monitor the temperature of the carbon dioxide seal storage layer,
And S6, when the monitored temperature exceeds a first threshold value, adjusting the height of the closed container so that the carbon dioxide hydrate is in a stable state.
Further, the carbon dioxide seal storage layer is located above the sea floor of the non-seismic zone or below the non-seismic zone abandoned oil and gas field.
Further, the characteristic parameters of the carbon dioxide seal storage layer comprise temperature, pressure, supercooling degree and saturation degree of brine.
Further, the captured carbon dioxide passes through a pressurization module, wherein the pressure in the pressurization module is set to 6MPa and the temperature of the cooling module is set to 276K. The hydrating agent is water. To improve the reaction efficiency, carbon dioxide hydrate formation accelerators such as Sodium Dodecyl Sulfate (SDS) and Sodium Dodecyl Benzene Sulfonate (SDBS) Tetrahydrofuran (THF), tetrabutyl bromide (TBAB), cyclopentane (CP) and the like are added at set concentrations;
Further, calculating the mass of the maximum stored carbon dioxide hydrate in the carbon dioxide seal storage layer further comprises obtaining the saturation of brine in a brine layer in the carbon dioxide seal storage layer, calculating theoretical seal storage mass according to the saturation of brine, and further calculating the number of sealed containers;
The mass calculation model of the maximum stored carbon dioxide hydrate of the carbon dioxide seal storage layer is as follows:
the hydrate is obtained according to the proportion of 1 unit volume of hydrate by 0.8 unit volume of hydrated 160 unit volume of carbon dioxide,
Wherein,Is the volume of carbon dioxide hydrate,/>For the volume of carbon dioxide contained in the water before injection, 0 is taken as pure water,/>For the volume of injected carbon dioxide,/>P is the pressure of carbon dioxide and T is the temperature of carbon dioxide, wherein P is the pressure of carbon dioxide; v is carbon dioxide, the volume of the carbon dioxide hydrate and the total volume of water, lambda is the ratio of the volume of brine in the reservoir, the value is 1 if the reservoir is an overseas reservoir, 0.6 is selected for a geological reservoir, S is the area of a carbon dioxide seal storage layer, H is the height of the carbon dioxide seal storage layer, and M is the mass of the carbon dioxide hydrate;
further, the sensor may also detect the altitude distance.
Further, the difference between the pressure value in the closed container and the pressure value of the storage layer is smaller than a second threshold value.
Further, in S6, when the difference between the pressure value in the closed container and the pressure value of the storage layer is greater than the second threshold value, and the monitored temperature exceeds the first threshold value, an alarm signal is sent.
A carbon dioxide sequestration process system, the system comprising:
The model building module is used for building a geological model of a carbon dioxide sealing area according to geological data and hydrologic conditions, and the geological model of the carbon dioxide sealing area comprises a brine layer;
the screening module is used for determining a carbon dioxide sealing storage layer according to the geological model of the carbon dioxide sealing storage area and screening conditions;
The reserve calculation module is used for calculating the mass of the maximum stored carbon dioxide hydrate in the carbon dioxide seal storage layer according to the characteristic parameters of the carbon dioxide seal storage layer;
The carbon dioxide hydrate generation module is used for capturing carbon dioxide, passing through the pressurizing module and the cooling module, then entering the supercooled water to generate carbon dioxide hydrate, and processing the carbon dioxide hydrate into spheres;
The sealing and injecting module is used for injecting spherical carbon dioxide hydrate into the closed container by adopting the injecting module, then placing the spherical carbon dioxide hydrate into the carbon dioxide sealing and storing layer, simultaneously adopting a sensor to monitor the temperature of the carbon dioxide sealing and storing layer,
The monitoring module is used for adjusting the height of the closed container when the monitored temperature exceeds a first threshold value, so that the carbon dioxide hydrate is in a stable state, and sending an alarm signal to the cloud end when the difference value between the pressure value in the closed container and the pressure value of the storage layer is larger than a second threshold value and the monitored temperature exceeds the first threshold value;
A computer readable storage medium having a computer program stored therein, wherein a processor executes the computer program to implement a carbon dioxide sequestration method.
A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the computer program to implement a carbon dioxide sequestration method. .
The beneficial effects of the invention are as follows:
1) And the proper reservoir region is screened by constructing a geological model of the carbon dioxide sealing region, so that the safety before sealing and the environmental consideration are improved.
2) The carbon dioxide hydrate is generated and the sealing and storing device is arranged in a sealing container, so that the stability of exposure and sealing is improved, and meanwhile, the safety and the applicability of sealing and storing can be effectively improved through multi-condition monitoring and position adjustment.
3) By arranging the sealing container and enabling the pressure inside and outside the sealing container to be consistent, the stability of the sealed carbon dioxide hydrate can be further improved, and even if the sealing container is damaged, the carbon dioxide hydrate can still stably exist in the sealing container or a carbon dioxide sealing area; if the external environment is changed greatly, the sealed container can be restored to a stable state by adjusting the position of the sealed container.
The foregoing description is only an overview of the present invention, and is intended to be more clearly understood as the present invention, as it is embodied in the following description, and is intended to be more clearly understood as the following description of the preferred embodiments, given in detail, of the present invention, along with other objects, features and advantages of the present invention.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
FIG. 1 is a schematic diagram of a carbon dioxide sequestration system
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, connected, detachably connected, or integrated; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
The technical scheme adopted by the invention for solving the technical problems is as follows:
a carbon dioxide sequestration method comprising:
S1, establishing a geological model of a carbon dioxide sealing area according to geological data and hydrologic conditions, wherein the geological model of the carbon dioxide sealing area comprises a brine layer;
s2, determining a carbon dioxide sealing storage layer according to a geological model of the carbon dioxide sealing storage area and screening conditions;
s3, calculating the mass of the maximum stored carbon dioxide hydrate in the carbon dioxide seal storage layer according to the characteristic parameters of the carbon dioxide seal storage layer;
S4, capturing carbon dioxide, passing through a pressurizing module and a cooling module, then entering supercooled water to generate carbon dioxide hydrate, and processing the carbon dioxide hydrate into spheres;
S5, injecting spherical carbon dioxide hydrate into a closed container by adopting an injection module, then placing the spherical carbon dioxide hydrate into the carbon dioxide seal storage layer, simultaneously adopting a sensor to monitor the temperature of the carbon dioxide seal storage layer,
And S6, when the monitored temperature exceeds a first threshold value, adjusting the height of the closed container so that the carbon dioxide hydrate is in a stable state.
Further, the carbon dioxide seal storage layer is located above the sea floor of the non-seismic zone or below the non-seismic zone abandoned oil and gas field.
Further, the characteristic parameters of the carbon dioxide seal storage layer comprise temperature, pressure, supercooling degree and saturation degree of brine.
Further, calculating the mass of the carbon dioxide hydrate stored maximally in the carbon dioxide seal storage layer further comprises obtaining the saturation of brine in the brine layer in the carbon dioxide seal storage layer, and calculating the theoretical seal storage mass according to the brine saturation.
Further, the sensor may also detect the altitude distance.
Further, the difference between the pressure value in the closed container and the pressure value of the storage layer is smaller than a second threshold value.
Further, in S6, when the difference between the pressure value in the closed container and the pressure value of the storage layer is greater than the second threshold value, and the monitored temperature exceeds the first threshold value, an alarm signal is sent.
Further, the captured carbon dioxide passes through a pressurization module, wherein the pressure in the pressurization module is set to 6MPa and the temperature of the cooling module is set to 276K. The hydrating agent is water. To improve the reaction efficiency, carbon dioxide hydrate formation accelerators such as Sodium Dodecyl Sulfate (SDS) and Sodium Dodecyl Benzene Sulfonate (SDBS) Tetrahydrofuran (THF), tetrabutyl bromide (TBAB), cyclopentane (CP) and the like are added at set concentrations;
Further, calculating the mass of the maximum stored carbon dioxide hydrate in the carbon dioxide seal storage layer further comprises obtaining the saturation of brine in a brine layer in the carbon dioxide seal storage layer, calculating theoretical seal storage mass according to the saturation of brine, and further calculating the number of sealed containers;
The mass calculation model of the maximum stored carbon dioxide hydrate of the carbon dioxide seal storage layer is as follows:
the hydrate is obtained according to the proportion of 1 unit volume of hydrate by 0.8 unit volume of hydrated 160 unit volume of carbon dioxide,
Wherein,Is the volume of carbon dioxide hydrate,/>For the volume of carbon dioxide contained in the water before injection, 0 is taken as pure water,/>For the volume of injected carbon dioxide,/>P is the pressure of carbon dioxide and T is the temperature of carbon dioxide, wherein P is the pressure of carbon dioxide; v is carbon dioxide, the volume of the carbon dioxide hydrate and the total volume of water, lambda is the ratio of the volume of brine in the reservoir, the value is 1 if the reservoir is an overseas reservoir, 0.6 is selected for a geological reservoir, S is the area of a carbon dioxide seal storage layer, H is the height of the carbon dioxide seal storage layer, and M is the mass of the carbon dioxide hydrate;
further, the seal is easily provided with a displacement device, or a supporting device;
Example 2
A carbon dioxide sequestration process system, the system comprising:
The model building module is used for building a geological model of a carbon dioxide sealing area according to geological data and hydrologic conditions, and the geological model of the carbon dioxide sealing area comprises a brine layer;
the screening module is used for determining a carbon dioxide sealing storage layer according to the geological model of the carbon dioxide sealing storage area and screening conditions;
The reserve calculation module is used for calculating the mass of the maximum stored carbon dioxide hydrate in the carbon dioxide seal storage layer according to the characteristic parameters of the carbon dioxide seal storage layer;
The carbon dioxide hydrate generation module is used for capturing carbon dioxide, passing through the pressurizing module and the cooling module, then entering the supercooled water to generate carbon dioxide hydrate, and processing the carbon dioxide hydrate into spheres;
The sealing and injecting module is used for injecting spherical carbon dioxide hydrate into the closed container by adopting the injecting module, then placing the spherical carbon dioxide hydrate into the carbon dioxide sealing and storing layer, simultaneously adopting a sensor to monitor the temperature of the carbon dioxide sealing and storing layer,
The monitoring module is used for adjusting the height of the closed container when the monitored temperature exceeds a first threshold value, so that the carbon dioxide hydrate is in a stable state, and sending an alarm signal to the cloud end when the difference value between the pressure value in the closed container and the pressure value of the storage layer is larger than a second threshold value and the monitored temperature exceeds the first threshold value;
A computer readable storage medium having a computer program stored therein, wherein a processor executes the computer program to implement a carbon dioxide sequestration method.
A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the computer program to implement a carbon dioxide sequestration method.
The beneficial effects of the invention are as follows:
And the proper reservoir region is screened by constructing a geological model of the carbon dioxide sealing region, so that the safety before sealing and the environmental consideration are improved.
The carbon dioxide hydrate is generated and the sealing and storing device is arranged in a sealing container, so that the stability of exposure and sealing is improved, and meanwhile, the safety and the applicability of sealing and storing can be effectively improved through multi-condition monitoring and position adjustment.
By arranging the sealing container and enabling the pressure inside and outside the sealing container to be consistent, the stability of the sealed carbon dioxide hydrate can be further improved, and even if the sealing container is damaged, the carbon dioxide hydrate can still stably exist in the sealing container or a carbon dioxide sealing area; if the external environment is changed greatly, the sealed container can be restored to a stable state by adjusting the position of the sealed container.
According to the method and the device for achieving the virtual reality environment interaction, through parameter adjustment at the cloud server, the problem of dizziness caused by visual focusing conflict is solved, picture setting operation is simplified, meanwhile, the efficiency of interaction experience is improved through an improved gesture recognition mode, and the efficiency of recognizing the virtual reality environment interaction mode is improved.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A carbon dioxide sealing method is characterized in that:
S1, establishing a geological model of a carbon dioxide sealing area according to geological data and hydrologic conditions, wherein the geological model of the carbon dioxide sealing area comprises a brine layer;
s2, determining a carbon dioxide sealing storage layer according to a geological model of the carbon dioxide sealing storage area and screening conditions;
s3, calculating the mass of the maximum stored carbon dioxide hydrate in the carbon dioxide seal storage layer according to the characteristic parameters of the carbon dioxide seal storage layer;
S4, capturing carbon dioxide, passing through a pressurizing module and a cooling module, then entering supercooled water to generate carbon dioxide hydrate, and processing the carbon dioxide hydrate into spheres;
S5, injecting spherical carbon dioxide hydrate into a closed container by adopting an injection module, then placing the spherical carbon dioxide hydrate into the carbon dioxide seal storage layer, simultaneously adopting a sensor to monitor the temperature of the carbon dioxide seal storage layer,
And S6, when the monitored temperature exceeds a first threshold value, adjusting the height of the closed container so that the carbon dioxide hydrate is in a stable state.
2. The carbon dioxide sequestration process of claim 1, wherein: the carbon dioxide seal storage layer is arranged above the sea floor of the non-seismic zone sea area or below the non-seismic zone abandoned oil and gas field.
3. The carbon dioxide sequestration process of claim 1, wherein: the characteristic parameters of the carbon dioxide seal storage layer comprise temperature, pressure, supercooling degree and saturation degree of brine.
4. The carbon dioxide sequestration process of claim 1, wherein: the calculating of the mass of the carbon dioxide hydrate stored maximally in the carbon dioxide seal storage layer further comprises obtaining the saturation of brine in the brine layer in the carbon dioxide seal storage layer, and calculating the theoretical seal storage mass according to the brine saturation.
5. The carbon dioxide sequestration process of claim 1, wherein: the sensor may also detect the altitude distance.
6. The carbon dioxide sequestration process of claim 1, wherein: the difference value between the pressure value in the closed container and the pressure value of the storage layer is smaller than a second threshold value.
7. The carbon dioxide sequestration process of claim 1, wherein: and S6, when the difference value between the pressure value in the closed container and the pressure value of the storage layer is larger than a second threshold value and the monitored temperature exceeds a first threshold value, an alarm signal is sent out.
8. A carbon dioxide sequestration system, the system comprising:
The model building module is used for building a geological model of a carbon dioxide sealing area according to geological data and hydrologic conditions, and the geological model of the carbon dioxide sealing area comprises a brine layer;
the screening module is used for determining a carbon dioxide sealing storage layer according to the geological model of the carbon dioxide sealing storage area and screening conditions;
The reserve calculation module is used for calculating the mass of the maximum stored carbon dioxide hydrate in the carbon dioxide seal storage layer according to the characteristic parameters of the carbon dioxide seal storage layer;
The carbon dioxide hydrate generation module is used for capturing carbon dioxide, passing through the pressurizing module and the cooling module, then entering the supercooled water to generate carbon dioxide hydrate, and processing the carbon dioxide hydrate into spheres;
The sealing and injecting module is used for injecting spherical carbon dioxide hydrate into the closed container by adopting the injecting module, then placing the spherical carbon dioxide hydrate into the carbon dioxide sealing and storing layer, simultaneously adopting a sensor to monitor the temperature of the carbon dioxide sealing and storing layer,
And the monitoring and alarming module is used for adjusting the height of the closed container when the monitoring temperature exceeds a first threshold value, so that the carbon dioxide hydrate is in a stable state, and sending an alarming signal to the cloud end when the difference value between the pressure value in the closed container and the pressure value of the storage layer is larger than a second threshold value and the monitoring temperature exceeds the first threshold value.
9. A computer readable storage medium having a computer program stored therein, wherein execution of the computer program by a processor performs the carbon dioxide sequestration method of any one of claims 1-7.
10. A terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the computer program to carry out the carbon dioxide sequestration method according to any one of claims 1-7.
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| CN118637254B (en) * | 2024-08-09 | 2024-11-08 | 中国科学院地质与地球物理研究所 | Reinforced carbon dioxide hydrate sealing method by injecting cold seawater |
| CN118822116B (en) * | 2024-09-20 | 2024-11-29 | 中国华能集团清洁能源技术研究院有限公司 | Carbon dioxide storage management method and device, storage medium and electronic device |
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