CN117291417A - For determination of offshore CO 2 Method, device and medium for deciding saline water layer sealing place - Google Patents
For determination of offshore CO 2 Method, device and medium for deciding saline water layer sealing place Download PDFInfo
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Abstract
The invention relates to a method for determining offshore CO 2 A method for deciding a saline water layer sequestration site, the method comprising: s1, evaluating suitability of a secondary basin scale offshore sequestration site: based on the secondary basin scale database, carrying out offshore sequestration site suitability evaluation of preset indexes to obtain a plurality of candidate sites; s2, recommending a site scale offshore sealing site: modeling each candidate site based on a site scale database to obtain a recommended site meeting the preset technical and economic requirements; s3, site screening decision: for the recommended sites, adopting a Monte Carlo random model to analyze the distribution intervals of the performance and the economic parameters in different sites, and based on the recommended sitesDistribution interval determination of offshore CO as investment project 2 And sealing the saline layer in the field. The method solves the problems of incomplete data, difficult quantification, large uncertainty and incomplete evaluation of the existing site decision method.
Description
Technical Field
The present invention relates to the field of geochemistry, and in particular to a method for determining offshore CO 2 A method, apparatus and computer readable storage medium for deciding a saline water layer sequestration site.
Background
Carbon dioxide (CO) 2 ) Brine layer sequestration (Carbon Capture and Storage, CCS) is a technological means for capturing, compressing and ultimately sequestering carbon dioxide gas emitted in industrial processes into the brine layer subsurface. The technology can reduce the concentration of carbon dioxide in the atmosphere, lighten the influence of global warming and climate change, and has important effect on realizing low-carbon transformation in the energy industry.
However, a large amount of investment is required in constructing CCS projects, and proper site evaluation and screening techniques are critical in implementing CCS techniques. Site evaluation is a step that must be performed before the CCS project is implemented and helps to determine the means for sequestering the captured CO 2 The desired location and conditions.
The inventors of the present application have found in research that offshore CCS site evaluation is more challenging because of the limited data of the subsea basin. There is no unified technical approach at present. The existing CCS site evaluation method has some defects, and mainly comprises the following steps:
(1) Incomplete data: CO at present 2 The geological logging project lacks a large number of practical cases for reference. Meanwhile, the data quality of field characterization and evaluation is difficult to ensure, the data types and the precision of different fields are very greatly changed, and enough data collection technology and facility management experience are difficult to obtain.
(2) Not easy to quantify: CCS site evaluation involves a number of qualitative and uncertain factors that cannot be analyzed accurately in number, and therefore requires subjective judgment and decision making.
(3) The uncertainty is large: CCS site evaluation also faces some uncertainties, such as geological features of the sealing location, sealing engineering technical schemes, long-term sealing, and the like, which all affect the reliability of the evaluation result.
(4) Assessment is incomplete: most of the existing site evaluation methods only evaluate part of the properties of the site, such as the sealing capacity, so that the evaluation is performed, and a comprehensive reference cannot be provided for the development of CCS projects.
Disclosure of Invention
In view of the above problems, it is an object of the present invention to provide a method for determining offshore CO 2 The method, the device and the computer readable storage medium for deciding the saline water layer sealing place solve the problems of incomplete data, difficult quantification, large uncertainty and incomplete assessment.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
in a first aspect, the present application provides a method for determining offshore CO 2 Salty water layerA method of deciding a sequestration site, the method comprising:
s1, evaluating suitability of a secondary basin scale offshore sequestration site: based on the secondary basin scale database, carrying out offshore sequestration site suitability evaluation of preset indexes to obtain a plurality of candidate sites;
s2, recommending a site scale offshore sealing site: modeling each candidate site based on a site scale database to obtain a recommended site meeting the preset technical and economic requirements;
s3, site screening decision: for the recommended sites, adopting a Monte Carlo random model to analyze distribution intervals of performance and economic parameters at different sites, and determining offshore CO as an investment project based on the distribution intervals 2 And sealing the saline layer in the field.
In one implementation manner of the present application, the step S1 includes the following steps:
s11, forming the secondary basin scale database and performing data processing;
s12, evaluating the sealing capacity;
s13, injectability evaluation: comprehensively judging injectability of the sealing and storing site according to the permeability coefficient of the salty water layer and the sand layer thickness, and determining an injectability upper limit through an injection pressure threshold value;
s14, risk assessment: minimizing leakage risk, determining maximum injection pressure, evaluating lithology, thickness, deposition history and integrity of a cap layer, and evaluating underground risks of movable faults, oil and gas resources, construction and earthquake activity;
s15, technical economy evaluation: evaluating the sealing cost of different sealing sites;
s16, environmental social assessment: evaluating the influence condition of geological storage projects corresponding to the storage sites on the ground environment society;
s17, forming a storage site suitability evaluation index: forming a seal-up site suitability evaluation index according to the contents of the steps S12 to S16, and obtaining CO through comprehensive evaluation analysis 2 Geological sequestration suitability grade.
In one implementation of the present application, the S12 includes:
the following formula is calculated to evaluate the sequestration capacity by using the volumetric method:
wherein G is CO2 CO being a deep salty water layer 2 Sealing and storing capacity; a is that t Is the volume of the deep saline water layer; h is a g Is the thickness of the deep salty water layer;is the average porosity of the deep salt water layer; ρCO2 is CO 2 A density; e (E) saline Is the CO2 substitution coefficient in the saline water layer.
In one implementation manner of the present application, in step S17, the comprehensive evaluation analysis uses a GIS spatial analysis tool, and an evaluation method based on parameter normalization and parameter classification:
wherein, for any offshore basin k to be evaluated, the corresponding grading value i of each evaluation index i is determined, and the score F of the index is correspondingly obtained i，j ；
Normalization is:
P i k ＝(F ij -F i1 )/(F iw -F i1 ) (3)
by parameter normalization, the different basin characteristics are characterized as a unitless quantity, the quantity is between 0 and 1, and then a generalized total score can be obtained for evaluating the basin grade:
wherein w is i To satisfy the weight function of the condition, satisfy
In one implementation manner of the present application, in the step S2, the following steps are included:
s21, forming a field scale database and processing data;
s22, geological modeling: selecting a proper sealing place from the evaluation results of the suitability evaluation of the offshore sealing places as a target place, and performing suitability evaluation according to the requirements until the target place meeting the requirements is selected;
s23, well site optimization: according to the geological model, combining engineering characteristics and engineering conditions to complete well site optimization;
s24, a technical scheme: referring to engineering examples, providing a geological storage technical scheme, evaluating whether the requirements of engineering projects are met, and performing economic evaluation if the requirements are met, wherein the technical scheme is not met again;
s25, economic evaluation: adopting a budget type cost calculation method to evaluate the cost of the project, comparing the cost with the investment budget, and if the cost exceeds the budget, re-designing the technical scheme and calculating the cost; if the budget is met, the enclosure site recommendation is completed.
In one implementation manner of the present application, in the step S3, the method includes:
the cost range of the probability interval from P10 to P90 is formed, and the cost with the probability of P50 or P70 is compared with the comprehensive incentive price.
In one implementation of the present application, the method includes: when the cost of P50 or P70 is higher than the integrated incentive price, a decision is made to discard the project, otherwise a decision is made to invest in the project.
In a second aspect, the present application provides a method for determining offshore CO 2 A decision making device for a saline water layer sequestration site, the device comprising: the system comprises a database module, a site evaluation module, a technical economy evaluation module and a decision module;
the database module comprises a secondary basin scale database and a field scale database;
the site evaluation module is used for storage capacity evaluation, injectability evaluation and risk evaluation;
the technical and economic evaluation module is used for technical evaluation, economic evaluation and social environment evaluation;
the decision module is used for determining the offshore CO as an investment project 2 And sealing the saline layer in the field.
In a third aspect, the present application provides a computer readable storage medium having a computer program stored therein, the computer program when run controlling a device in which the computer readable storage medium is located to perform the method for determining an offshore CO according to the first aspect 2 A method for deciding a saline water layer sealing place.
Due to the adoption of the technical scheme, the invention has the following advantages: according to the application scheme, based on the secondary basin scale database, the suitability evaluation of offshore sequestration sites with preset indexes is carried out to obtain a plurality of candidate sites, modeling processing is carried out on each candidate site based on the site scale database to obtain a recommended site meeting preset technical and economic requirements, then the recommended site is analyzed by adopting a Monte Carlo random model to analyze distribution intervals of performance and economic parameters of different sites, and offshore CO serving as an investment project is determined based on the distribution intervals 2 The invention solves the problems of incomplete marine geological data, difficult quantification, large uncertainty, incomplete assessment and the like of the geological storage site evaluation method, and can provide offshore CO for stakeholders under the condition of lack of marine geological data 2 The preliminary sealing scheme of the geological sealing project comprises sealing sites, sealing capacity, sealing cost and the like, provides a scientific method for the decision of site evaluation and provides a benefit relatives for CO 2 Investment decisions for geological sequestration projects provide a reference.
Drawings
FIG. 1 is a schematic illustration of a method for determining offshore CO according to an embodiment of the invention 2 A flow diagram of a decision making method of a saline water layer storage site;
FIG. 2 is a schematic illustration of a method for determining offshore CO according to an embodiment of the invention 2 Saline layer seals up and deposits fieldA block diagram of a decision device of the ground and a data flow diagram.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the invention, fall within the scope of protection of the invention.
The method aims at solving the problems of incomplete data, difficult quantification, large uncertainty and incomplete assessment of the prior art of the method for evaluating the sealing place. The technical proposal of the invention correspondingly provides a method for determining the offshore CO 2 A method, apparatus and computer readable storage medium for deciding a saline water layer sequestration site. Wherein the method comprises the following steps: secondary basin scale offshore sequestration site suitability evaluation: based on the secondary basin scale database, carrying out offshore sequestration site suitability evaluation of preset indexes to obtain a plurality of candidate sites; site-scale offshore sequestration site recommendation: modeling each candidate site based on a site scale database to obtain a recommended site meeting the preset technical and economic requirements; site screening decision: for the recommended sites, adopting a Monte Carlo random model to analyze distribution intervals of performance and economic parameters at different sites, and determining offshore CO as an investment project based on the distribution intervals 2 And sealing the saline layer in the field. The technical scheme of the invention can provide offshore CO for stakeholders under the condition of lack of marine geological data 2 The preliminary sealing scheme of the geological sealing project comprises sealing sites, sealing capacity, sealing cost and the like, provides a scientific method for the decision of site evaluation and provides a benefit relatives for CO 2 Investment decisions for geological sequestration projects provide a reference.
The method, apparatus and medium provided by the present invention are further described in more detailed embodiments of the present invention with reference to more drawings of embodiments of the present invention.
SeeFIG. 1, in one aspect of an embodiment of the present application, provides a method for determining an offshore CO 2 The method for deciding the saline water layer sealing place specifically comprises the following steps:
s1, evaluating suitability of a secondary basin scale offshore sequestration site;
s2, recommending a site scale offshore sealing and storing site;
s3, site screening decision.
In a more detailed embodiment of the invention, the above-described method flow is described below in conjunction with fig. 2.
The decision making device in the embodiment of the application comprises: the system comprises a database module, a site evaluation module, a technical economy evaluation module and a decision module; the database module comprises a secondary basin scale database and a field scale database; the site evaluation module is used for carrying out storage capacity evaluation, injectability evaluation and risk evaluation; the technical and economic evaluation module is used for technical evaluation, economic evaluation and social environment evaluation; decision module for determining offshore CO as investment project 2 And sealing the saline layer in the field.
The device can realize the decision method in the embodiment of the application, and comprises the following steps:
s1, evaluating suitability of a secondary basin scale offshore sequestration site, wherein the method comprises the following steps of:
s11, forming a secondary basin scale database and performing data processing, wherein the data comprise offshore basin deposition structures, seismic data, cap layer conditions, reservoir conditions, fracture conditions, trap conditions, drilling information and engineering conditions (surface and sea area data);
s12, assessing the sealing capacity, wherein the capacity assessment method adopts a USDOE volume method, and the calculation formula is as follows:
wherein G is CO2 CO being a deep salty water layer 2 Sealing and storing capacity; a is that t Is the volume of the deep saline water layer; h is a g Is the thickness of the deep salty water layer;is the average porosity of the deep salt water layer; ρ CO2 Is CO 2 A density; e (E) saline Is the CO2 substitution coefficient in the saline water layer.
S13, injectability evaluation: comprehensively judging the injectability of the site according to the permeability coefficient of the salty water layer and the thickness of the sand layer, and determining the upper limit of the injectability through an injection pressure threshold value; the rate of CO2 injection is related to reservoir thickness, porosity, permeability coefficient, reservoir and cap layer mechanical properties and thermodynamic conditions that affect CO2 density and viscosity; the parameters related to the injectivity also include the depth of burial, and the lithology of the reservoir suitable for sequestration is clastic rock and carbonate rock reservoirs;
s14, risk assessment: minimizing leakage risk, determining maximum injection pressure, evaluating lithology, thickness, deposition history and integrity of a cap layer, and evaluating underground risks of movable faults, oil and gas resources, construction and earthquake activity;
s15, technical economy evaluation: the method comprises the steps of evaluating the sealing cost of different sealing sites, wherein the cost evaluation method is an empirical method;
s16, environmental social assessment: evaluating the influence conditions of geological storage projects on the ground environment society, including conflict of densely populated cities, natural resources, use of overground and underground spaces, protection areas, rivers, roads and the like;
s17, forming a storage site suitability evaluation index: forming a seal storage site suitability evaluation index according to the contents of the steps S12 to S16, and comprehensively evaluating and analyzing:
wherein, for any offshore basin k to be evaluated, the corresponding grading value j of each evaluation index i is determined, and the score F of the index is correspondingly obtained i,j ；
Normalization is:
P i k ＝(F ij -F i1 )/(F iw -F i1 ) (3)
by parameter normalization, the different basin characteristics are characterized as a unitless quantity, the quantity is between 0 and 1, and then a generalized total score can be obtained for evaluating the basin grade:
wherein w is i To satisfy the weight function of the condition, satisfy
Finally obtaining the grade of the suitability of the geological CO2 seal;
s2, recommending a site scale offshore sequestration site, comprising the following steps of:
s21, forming a field scale database and processing data;
s22, geological modeling: selecting a proper sealing place from the sealing place suitability evaluation results of the sub-basin scale near-sea basin as a target place, and performing adaptability evaluation according to the requirements until a target place meeting the requirements is selected;
s23, well site optimization: according to the geological model, combining engineering characteristics and engineering conditions to complete well site optimization;
s24, a technical scheme: referring to engineering examples, providing a geological storage technical scheme, evaluating whether the requirements of engineering projects are met, and performing economic evaluation if the requirements are met, wherein the technical scheme is not met again;
s25, economic evaluation: adopting a budget type cost calculation method to evaluate the cost of the project, comparing the cost with the investment budget, and if the cost exceeds the budget, re-designing the technical scheme and calculating the cost; if the budget is met, the recommending of the sealing and storing site is completed;
s3, site evaluation decision, wherein a Monte Carlo random model is adopted to analyze the distribution intervals of the performance and the economic parameters of different sites, a policy system forms a cost range of a probability interval of P10-P90, the cost of probability P50 or P70 is compared with the comprehensive incentive price, when the cost of P50 or P70 is higher than the comprehensive incentive price, decision of abandoning the project is made, and otherwise, decision of investment project is made.
In conclusion, the method solves the problems of incomplete marine geological data, difficult quantification, large uncertainty, incomplete assessment and the like of a geological storage site evaluation method, can provide a preliminary storage scheme of the offshore CO2 geological storage project for stakeholders under the condition of lack of the marine geological data, comprises storage sites, storage capacity, storage cost and the like, provides a scientific method for site evaluation decisions, and provides references for investment decisions of the stakeholders on the CO2 geological storage project.
In another aspect of the embodiments of the present application, a computer storage medium is also provided accordingly.
The embodiment of the application also provides a computer readable storage medium, wherein the storage medium comprises a stored program, and the device where the storage medium is controlled to execute the method when the program runs. The detailed implementation process is not repeated here.
The embodiment of the application also provides computer equipment. The computer device of this embodiment includes: the foregoing method in the embodiments is implemented by the processor, the memory, and the computer program stored in the memory and executable on the processor, where the processor executes the computer program, and is not described herein in detail to avoid repetition. Alternatively, the computer program, when executed by the processor, performs the functions of the models/units in the embodiments, and is not described herein in detail to avoid repetition.
The computer device may be a desktop computer, a notebook computer, a palm computer, a server, a cloud server, or the like. Computer devices may include, but are not limited to, processors, memory. Those skilled in the art will appreciate that more or fewer components than shown may be included, or certain components may be combined, or different components may be included, for example, a computer device may also include input and output devices, network access devices, buses, and the like.
The processor may be a central processing unit (Central Processing Unit, CPU), other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory may be an internal storage unit of the computer device, such as a hard disk or a memory of the computer device. The memory may also be an external storage device of the computer device, such as a plug-in hard disk provided on the computer device, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), or the like. Further, the memory may also include both internal storage units and external storage devices of the computer device. The memory is used to store computer programs and other programs and data required by the computer device. The memory may also be used to temporarily store data that has been output or is to be output.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the several embodiments provided in the present invention, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the above elements is merely a logical functional division, and there may be additional divisions in actual implementation, e.g., multiple elements or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium, and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a Processor (Processor) to perform part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. For determining offshore CO 2 The method for deciding the saline water layer sealing place is characterized by comprising the following steps:
s1, evaluating suitability of a secondary basin scale offshore sequestration site: based on the secondary basin scale database, carrying out offshore sequestration site suitability evaluation of preset indexes to obtain a plurality of candidate sites;
s2, recommending a site scale offshore sealing site: modeling each candidate site based on a site scale database to obtain a recommended site meeting the preset technical and economic requirements;
s3, site screening decision: for the recommended sites, adopting a Monte Carlo random model to analyze distribution intervals of performance and economic parameters at different sites, and determining offshore CO as an investment project based on the distribution intervals 2 And sealing the saline layer in the field.
2. The method for determining offshore CO according to claim 1 2 The method for deciding the saline water layer sealing place is characterized by comprising the following steps of:
s11, forming the secondary basin scale database and performing data processing;
s12, evaluating the sealing capacity;
s13, injectability evaluation: comprehensively judging injectability of the sealing and storing site according to the permeability coefficient of the salty water layer and the sand layer thickness, and determining an injectability upper limit through an injection pressure threshold value;
s14, risk assessment: minimizing leakage risk, determining maximum injection pressure, evaluating lithology, thickness, deposition history and integrity of a cap layer, and evaluating underground risks of movable faults, oil and gas resources, construction and earthquake activity;
s15, technical economy evaluation: evaluating the sealing cost of different sealing sites;
s16, environmental social assessment: evaluating the influence condition of geological storage projects corresponding to the storage sites on the ground environment society;
s17, forming a storage site suitability evaluation index: forming a seal-up site suitability evaluation index according to the contents of the steps S12 to S16, and obtaining CO through comprehensive evaluation analysis 2 Geological sequestration suitability grade.
3. The method for determining offshore CO according to claim 2 2 The method for deciding the saline layer sealing place is characterized in that the step S12 includes:
the following formula is calculated to evaluate the sequestration capacity by using the volumetric method:
wherein G is CO2 CO being a deep salty water layer 2 Sealing and storing capacity; a is that t Is the volume of the deep saline water layer; h is a g Is the thickness of the deep salty water layer;is the average porosity of the deep salt water layer; ρ CO2 Is CO 2 A density; e (E) saline Is the CO2 substitution coefficient in the salty water layer; e (E) An/At Is an area coefficient; e (E) hn/hg Is a thickness coefficient; e (E) φe/φtot Is the porosity coefficient; e (E) V Is the volume displacement coefficient; e (E) d Is the microscopic displacement coefficient.
4. A method for determining offshore CO according to claim 3 2 The method for deciding the saline water layer sealing place is characterized in that in step S17, a GIS space analysis tool is adopted for comprehensive evaluation analysis, and an evaluation method based on parameter normalization and parameter classification is adopted:
wherein, for any offshore basin kappa to be evaluated, the corresponding grading value j of each evaluation index i is determined, and the score F of the index is correspondingly obtained i，j ；
Normalization is:
by parameter normalization, the different basin characteristics are characterized as a unitless quantity, the quantity is between 0 and 1, and then a generalized total score can be obtained for evaluating the basin grade:
wherein w is i To satisfy the weight function of the condition, satisfy
5. The method for determining off-shore CO of claim 4 2 Block for saline layer sealing placeThe method is characterized in that S02 is that through the real-time number bin of the Flink, data is synchronized to Hologres in real time to replace Kafka as an intermediate data layer of the real-time number bin, and an ODS layer is formed.
6. The method for determining offshore CO as defined in claim 5 2 The method for deciding the saline water layer sealing place is characterized by comprising the following steps in the step S2:
s21, forming a field scale database and processing data;
s22, geological modeling: selecting a proper sealing place from the evaluation results of the suitability evaluation of the offshore sealing places as a target place, and performing suitability evaluation according to the requirements until the target place meeting the requirements is selected;
s23, well site optimization: according to the geological model, combining engineering characteristics and engineering conditions to complete well site optimization;
s24, a technical scheme: referring to engineering examples, providing a geological storage technical scheme, evaluating whether the requirements of engineering projects are met, and performing economic evaluation if the requirements are met, wherein the technical scheme is not met again;
s25, economic evaluation: adopting a budget type cost calculation method to evaluate the cost of the project, comparing the cost with the investment budget, and if the cost exceeds the budget, re-designing the technical scheme and calculating the cost; if the budget is met, the enclosure site recommendation is completed.
7. The method for determining offshore CO according to claim 6 2 The method for deciding the saline water layer sealing place is characterized in that in the step S3, the method includes:
the cost range of the probability interval from P10 to P90 is formed, and the cost with the probability of P50 or P70 is compared with the comprehensive incentive price.
8. The method for determining offshore CO according to claim 7 2 The method for deciding the saline water layer sealing place is characterized by comprising the following steps: when the cost of P50 or P70 is higher than the integrated incentive price, a decision is made to discard the project, otherwiseA decision is made on the investment project.
9. For determining offshore CO 2 The utility model provides a decision-making device in saline layer encapsulation place, its characterized in that, the device includes: the system comprises a database module, a site evaluation module, a technical economy evaluation module and a decision module;
the database module comprises a secondary basin scale database and a field scale database;
the site evaluation module is used for storage capacity evaluation, injectability evaluation and risk evaluation;
the technical and economic evaluation module is used for technical evaluation, economic evaluation and social environment evaluation;
the decision module is used for determining the offshore CO as an investment project 2 And sealing the saline layer in the field.
10. A computer readable storage medium, wherein a computer program is stored in the computer readable storage medium, and when the computer program is run, the computer program controls a device in which the computer readable storage medium is located to execute the method for determining an offshore CO according to any one of claims 1 to 8 2 A method for deciding a saline water layer sealing place.
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