Storage medium and emission monitoring method, device and equipment for CCUS project

Abstract

The invention discloses a storage medium, and an emission monitoring method, device and equipment for a CCUS project. The method comprises the following steps: dividing the CCUS project into a plurality of links; the links comprise trapping, transportation, injection, gathering and transportation, lifting, separation and recovery of produced gas, reinjection, ground treatment and outward transportation; greenhouse gas emission sources of all links are identified, and corresponding monitoring instruments or detection means are arranged according to all the emission sources; wherein a discharge source of the ground treatment comprises organized emptying discharge generated by injection well maintenance operation and organized emptying discharge generated by production well maintenance operation; the discharge amount of the ground treatment needs to be monitored when the discharge amount is emptied every time; acquiring monitoring data of each monitoring parameter item in each link according to a monitoring instrument or a detection means; and calculating the discharge amount of the target CCUS project according to a preset algorithm by taking the monitoring data as parameters. According to the method and the system, the emission of the project which is organized to be emptied in the operation is accurately calculated, so that the accuracy of emission monitoring of the CCUS project is effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of carbon capture, utilization and storage (CCUS), and in particular to a storage medium, an emission monitoring method, a device and equipment for a CCUS project. Background Art

[0002] Carbon capture, utilization and storage (CCUS) refers to the process of converting CO 2 Separated from industrial processes, energy use or the atmosphere, used directly or injected into the formation to achieve CO 2 The process of permanent emission reduction. According to the technical process, CCUS is mainly divided into carbon capture, carbon transportation, carbon utilization, and carbon storage.

[0003] In order to seek an effective low-carbon development path, understanding the carbon emissions is the basis of all work, so it is necessary to establish accurate accounting methods and precise monitoring methods.

[0004] In order to achieve effective management and control of the CO2 capture and oil storage project, comprehensive and accurate accounting of the emissions generated during the project implementation phase and the overall emissions of the project is the basic work to quantify the greenhouse gas emission effects of the CCUS project.

[0005] After research, the inventors found that the existing technology for calculating emissions in CCUS projects has at least the following defects:

[0006] There are only some guiding, framework specifications or methodological guidelines in the field of CCUS greenhouse gas emission accounting, which cannot accurately calculate the specific emissions of CCUS projects.

[0007] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0008] The purpose of the present invention is to be able to accurately calculate the emissions of CCUS projects.

[0009] The present invention provides an emission monitoring method for a CCUS project, comprising the steps of:

[0010] S11. Divide the CCUS project into multiple links; the links include: capture, transportation, injection, gathering, lifting, separation and recovery of produced gas, reinjection, ground processing and external transmission;

[0011] S12. Identify the greenhouse gas emission sources of each link respectively, and set corresponding monitoring instruments or detection means according to each emission source; wherein, the emission sources of the ground treatment include the organized venting emissions from the injection well maintenance operation and the organized venting emissions from the production well maintenance operation; the emission volume of the ground treatment needs to be monitored every time it is vented;

[0012] S13, obtaining monitoring data of each monitoring parameter item in each link according to the monitoring instrument or the detection means;

[0013] S14. Using the monitoring data as parameters, calculate the emissions of the target CCUS project according to a preset algorithm.

[0014] Preferably, in the present invention, the preset algorithm includes:

[0015] S41. Determine the corresponding accounting boundary according to the operating characteristics of the target CCUS project; the accounting boundary includes: each carbon dioxide tail gas emission point, each preset related system, carbon dioxide flooding storage area, and carbon dioxide geological escape monitoring boundary;

[0016] S42. Calculate the project emissions using the following formula:

[0017] PE y =PE cat,y +PE trp,y +PE inj,y +PE lif,y +PE gat,y +PE car,y +PE org,y , (Formula 1);

[0018] In formula 1, PE y The emissions generated by the project activities in year y; PE cat,y is the project emission of carbon dioxide capture in year y; PE trp,y The project emission of carbon dioxide transport in year y; PE inj,y The project emissions of the carbon dioxide injection part in year y; PE lif The project emission of crude oil lifting part in year y; PE gat is the project emission of oil and gas gathering and transportation in year y; PE car,y is the carbon dioxide emissions carried by the external transport medium in year y; PE org,y Emissions from organized venting projects during operations in year y.

[0019] In another aspect of the present invention, there is also provided a device for calculating emissions of a CCUS project, comprising:

[0020] The link division unit is used to divide the CCUS project into multiple links; the links include: capture, transportation, injection, gathering and transportation, lifting, separation and recovery of produced gas, reinjection, ground processing and external transmission;

[0021] An emission source identification unit is used to respectively identify the greenhouse gas emission sources of each link, and set corresponding monitoring instruments or detection means according to each emission source; wherein, the emission sources of the surface treatment include the organized venting emissions from the injection well maintenance operation and the organized venting emissions from the production well maintenance operation; the emission volume of the surface treatment needs to be monitored at each venting;

[0022] A data acquisition unit, used to acquire monitoring data of each monitoring parameter item in each link according to the monitoring instrument or the detection means;

[0023] The emission calculation unit is used to calculate the emission of the target CCUS project according to a preset algorithm using the monitoring data as a parameter.

[0024] Preferably, in the present invention, the emission calculation unit includes:

[0025] A boundary determination module is used to determine the corresponding accounting boundary according to the operating characteristics of the target CCUS project; the accounting boundary includes: each carbon dioxide tail gas emission point, each preset related system, carbon dioxide flooding storage area, and carbon dioxide geological escape monitoring boundary;

[0026] The emission calculation module is used to calculate the project emissions. The calculation formula includes:

[0027] PE y =PE cat,y +PE trp,y +PE inj,y +PE lif,y +PE gat,y +PE car,y +PE org,y , (Formula 1);

[0028] In formula 1, PE y The emissions generated by the project activities in year y; PE cat,y is the project emission of carbon dioxide capture in year y; PE trp,y The project emission of carbon dioxide transport in year y; PE inj,y The project emissions of the carbon dioxide injection part in year y; PE lif The project emission of crude oil lifting part in year y; PE gat is the project emission of oil and gas gathering and transportation in year y; PE car,y is the carbon dioxide emissions carried by the external transport medium in year y; PE org,yEmissions from organized venting projects during operations in year y.

[0029] On the other hand, an emission monitoring device for a CCUS project is provided. The emission monitoring device for a CCUS project includes a computer program stored on a medium. The computer program includes program instructions. When the program instructions are executed by a computer, the computer executes the methods described in the above aspects and achieves the same technical effects.

[0030] On the other hand, a storage medium is provided on which a computer program is stored. When the computer program is executed by a processor, each step of the emission monitoring method for a CCUS project as described in any one of the above items is implemented.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] In order to accurately calculate the emissions of CCUS projects, this paper conducts targeted calculations on the emissions of organized venting projects in operations. 2 The calculation results can be obtained indirectly by taking into account the situation. Specifically, during the oil and gas production stage, in order to ensure the safety of the production process and prevent abnormal wellbore pressure from causing collapse and other production safety accidents, the bottom hole and wellhead pressure of the injection well and the production well are usually monitored. However, in the past, this part of the monitoring was only to ensure the safety of production and was not used to calculate the total amount of injected or produced gas. After research, the inventors found that these existing wellbore monitoring data can be used to indirectly calculate the emission of organized venting projects. The density of the injected or produced gas is calculated by the changes in the bottom hole and wellhead pressure and temperature of the injection well and the production well, and then combined with the volume of the wellbore, the amount of gas can be calculated. In this way, by using the existing monitoring data of the wellbore, there is no need to install instruments or use other means to additionally monitor the flow and concentration of the injected gas. In general, the oil and gas production situation is complicated, and direct monitoring of CO 2 The concentration and flow rate monitoring results have large errors, so the indirect calculation method proposed in the present invention is more accurate and convenient.

[0033] In summary, in the present invention, the emission of organized venting projects during operation is accurately calculated, thereby effectively improving the accuracy of emission monitoring for CCUS projects.

[0034] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, and to make the above and other purposes, technical features and advantages of the present invention easier to understand, one or more preferred embodiments are listed below and described in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a step diagram of the emission monitoring method of the CCUS project described in the present invention;

[0036] Figure 2 It is a schematic diagram of the structure of the emission monitoring device of the CCUS project described in the present invention;

[0037] Figure 3 It is a schematic diagram of the structure of the emission monitoring equipment of the CCUS project described in the present invention. DETAILED DESCRIPTION

[0038] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0039] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0040] In this document, for the convenience of description, spatial relative terms such as "below", "below", "down", "above", "above", "upper", etc. may be used to describe the relationship between one element or feature and another element or feature in the accompanying drawings. It should be understood that the spatial relative terms are intended to include different orientations of the object in use or operation in addition to the orientation depicted in the figure. For example, if the object in the figure is turned over, the element described as being "below" or "below" other elements or features will be oriented "above" the element or feature. Therefore, the exemplary term "below" can include both below and above. Objects may also have other orientations (rotated 90 degrees or other orientations) and the spatial relative terms used in this document should be interpreted accordingly.

[0041] In this document, the terms "first", "second", etc. are used to distinguish two different elements or parts, and are not used to limit a specific position or relative relationship. In other words, in some embodiments, the terms "first", "second", etc. can also be interchangeable.

[0042] Embodiment 1

[0043] In order to accurately calculate the emissions of CCUS projects, Figure 1 As shown, in an embodiment of the present invention, a method for monitoring emissions of a CCUS project is provided, comprising the steps of:

[0044] S11. Divide the CCUS project into multiple links; the links include: capture, transportation, injection, gathering, lifting, separation and recovery of produced gas, reinjection, ground processing and external transmission;

[0045] In the embodiment of the present invention, the operation links are divided according to the operation status of the CCUS project; generally, the CCUS project can be divided into the following links: capture, transportation, injection, gathering, lifting, separation and recovery of produced gas, reinjection, ground processing and external transmission.

[0046] S12. Identify the greenhouse gas emission sources of each link respectively, and set corresponding monitoring instruments or detection means according to each emission source; wherein, the emission sources of the ground treatment include the organized venting emissions from the injection well maintenance operation and the organized venting emissions from the production well maintenance operation; the emission volume of the ground treatment needs to be monitored every time it is vented;

[0047] In practical applications, the emission sources of each link can be specifically as follows:

[0048] Capture: The emission source is the emission caused by the consumption of electricity and heat in the capture process; among them, the monitoring of electricity (i.e., electricity quantity) uses an electric meter to adopt a continuous monitoring method; the monitoring of heat uses a heat flow meter or adopts a continuous monitoring method.

[0049] Transportation: Emission sources include emissions from the combustion of fossil fuels; this link requires monitoring the amount of fuel consumed by transportation vehicles, using oil flow meters or gas flow meters for continuous monitoring.

[0050] Injection: Emission sources include emissions from the combustion of fossil fuels, and emissions from the consumption of electricity and steam. In this link, fossil fuels need to monitor the amount of fossil fuel used, using measuring instruments that meet the requirements and are within the verification / calibration cycle. Electricity (i.e., electricity) is monitored using an electric meter in a continuous monitoring manner. Thermal monitoring uses a heat flow meter or a continuous monitoring method.

[0051] Gathering and transportation: Emission sources include emissions from the combustion of fossil fuels, and emissions from the consumption of electricity and steam. In this link, fossil fuels need to monitor the amount of fossil fuel used, using measuring instruments that meet the requirements and are within the verification / calibration cycle. Electricity (i.e., electricity) is monitored using an electric meter in a continuous monitoring manner. Thermal monitoring uses a heat flow meter or adopts a continuous monitoring method.

[0052] Lifting: The emission source is the emission generated by electricity consumption; the monitoring of electricity (i.e., electricity quantity) in this link uses an electric meter to adopt continuous monitoring method.

[0053] Separation and recovery of produced gas: Emission sources include emissions from the combustion of fossil fuels, and emissions from the consumption of electricity and steam. In this link, fossil fuels need to monitor the amount of fossil fuel used, and use measuring instruments that meet the requirements and are within the verification / calibration cycle. Electricity (i.e., electricity) is monitored using an electric meter in a continuous monitoring manner. Thermal monitoring uses a heat flow meter or a continuous monitoring method.

[0054] Ground treatment: Emission sources include organized venting emissions from injection well maintenance operations and production well maintenance operations. In this link, organized venting emissions do not belong to continuous emissions, and CO2 emissions need to be monitored every time they are vented. Specific implementation methods may include:

[0055] If the injection well is emptied due to maintenance work, the temperature and pressure at the wellhead and bottom of the well shall be measured in accordance with the conservative principle and assumed that the carbon dioxide in the injection well string is completely emptied.

[0056] If the carbon dioxide in the tubing string is vented due to maintenance work on the production well, the produced fluid in the tubing string needs to be recovered and the gas-oil ratio, recovered crude oil volume and carbon dioxide concentration in the produced gas need to be measured.

[0057] External transmission: The produced water, crude oil, natural gas and other media generated by the project will be transported outside the project boundary as products or wastes, resulting in the external emission of carbon dioxide in the media. In this link, it is necessary to use water meters to monitor the amount of produced water transmitted externally, gas flow meters to monitor the amount of natural gas transmitted externally, and liquid flow meters to monitor the amount of crude oil transmitted externally. In addition, a monthly sampling and analysis method is adopted, and a chromatography is used to monitor the carbon dioxide content in the exported crude oil and water, and an infrared photoacoustic spectroscopy device is used to measure the carbon dioxide concentration of the exported natural gas.

[0058] S13, obtaining monitoring data of each monitoring parameter item in each link according to the monitoring instrument or the detection means;

[0059] In practical applications, all monitoring data collected in the embodiments of the present invention are generally recorded electronically and retained for at least 10 years after the final period; then, preferably, all measuring equipment in the monitoring process is calibrated according to relevant industry standards.

[0060] In a specific example, the monitoring data of each parameter item can be recorded as follows:

[0061]

[0062] Data / Parameter Name <![CDATA[Ma st,y ]]> Data Description The amount of heat consumed by the project in year y Data Unit t Data Source Flow Meter Monitoring point requirements - Monitoring instrument requirements The accuracy level is 1.5 Monitoring procedures and method requirements - Monitoring frequency and record requirements Continuous monitoring, recording once a day Quality Assurance / Quality Control Program Requirements Heat should be measured completely using regularly calibrated measuring equipment

[0063] Data / Parameter Name <![CDATA[En st,y ]]> Data Description The enthalpy of heat consumed by the project in year y Data Unit GJ / t Data Source Measure the thermal temperature and pressure through temperature and pressure transmitters, and obtain the thermal enthalpy value by looking up the table Monitoring point requirements - Monitoring instrument requirements The accuracy level is 1.5 Monitoring procedures and method requirements - Monitoring frequency and record requirements Continuous monitoring, recording once a day Quality Assurance / Quality Control Program Requirements Temperature and pressure gauges should be fully measured using regularly calibrated measuring equipment.

[0064]

[0065] Data / Parameter Name <![CDATA[AD out,j,y ]]> Data Description The amount of the jth type of external medium in the yth year Data Unit <![CDATA[t or m 3 > Data Source Flow meter measurement Monitoring point requirements - Monitoring instrument requirements The flow meter accuracy should meet 0.2 level Monitoring procedures and method requirements - Monitoring frequency and record requirements Continuous monitoring, recording once a day Quality Assurance / Quality Control Program Requirements Complete measurement using regularly calibrated flow meters

[0066]

[0067]

[0068]

[0069] Data / Parameter Name <![CDATA[P iw,n,B,j,y ]]> Data Description The pressure of the fluid at the wellhead of the jth injection well in the yth year Data Unit Pa Data Source Pressure gauge Monitoring point requirements - Monitoring instrument requirements - Monitoring procedures and method requirements The maximum value of the data from one week before the injection well maintenance operation is used Monitoring frequency and record requirements Continuous monitoring, recording once a day Quality Assurance / Quality Control Program Requirements The pressure of the fluid should be fully measured using regularly calibrated measuring equipment

[0070] Data / Parameter Name <![CDATA[T iw,n,B,j,y ]]> Data Description Temperature of the fluid at the wellhead of the jth injection well in the yth year Data Unit K Data Source Temperature gauge Monitoring point requirements - Monitoring instrument requirements - Monitoring procedures and method requirements The minimum value of the data from the week before the production well maintenance operation is used Monitoring frequency and record requirements Continuous monitoring, recording once a day Quality Assurance / Quality Control Program Requirements The temperature of the fluid should be fully measured using regularly calibrated measuring equipment

[0071] Data / Parameter Name <![CDATA[W pw,oil,j,y ]]> Data Description The amount of crude oil recovered from the jth production well in the yth year Data Unit t Data Source Field measurement Monitoring point requirements - Monitoring instrument requirements - Monitoring procedures and method requirements Calculated based on crude oil volume and density Monitoring frequency and record requirements 1 time / operation cycle monitoring, 1 time / operation cycle recording Quality Assurance / Quality Control Program Requirements Complete measurements using regularly calibrated measuring equipment

[0072] Data / Parameter Name <![CDATA[θ pw,F,j,y ]]> Data Description Gas-oil ratio of produced fluid from the jth production well in the yth year Data Unit <![CDATA[m 3 / t]]> Data Source Three-phase metering device Monitoring point requirements - Monitoring instrument requirements - Monitoring procedures and method requirements The maximum value of the data from the week before the production well maintenance operation is used Monitoring frequency and record requirements 1 time / day monitoring, 1 time / day recording Quality Assurance / Quality Control Program Requirements Complete measurements using regularly calibrated measuring equipment

[0073] Data / Parameter Name <![CDATA[ω pw,F,v,j,y <!-- 7 -->]]> Data Description The volume concentration of carbon dioxide in the gas produced by the jth production well in the yth year Data Unit - Data Source Concentration meter Monitoring point requirements - Monitoring instrument requirements - Monitoring procedures and method requirements The maximum value of the data from the week before the production well maintenance operation is used Monitoring frequency and record requirements 1 time / day monitoring, 1 time / day recording Quality Assurance / Quality Control Program Requirements The volume concentration of the fluid should be fully measured using regularly calibrated metering equipment.

[0074] Data / Parameter Name <![CDATA[P pw,n,B,j,y ]]> Data Description The pressure of the produced fluid in the jth production well in the yth year Data Unit Pa Data Source Pressure gauge Monitoring point requirements - Monitoring instrument requirements - Monitoring procedures and method requirements The maximum value of the data from the week before the production well maintenance operation is used Monitoring frequency and record requirements Continuous monitoring, recording once a day Quality Assurance / Quality Control Program Requirements The pressure of the fluid should be fully measured using regularly calibrated measuring equipment

[0075] S14. Using the monitoring data as parameters, calculate the emissions of the target CCUS project according to a preset algorithm.

[0076] The embodiment of the present invention provides effective data support and calculation ideas for the accurate calculation of the emissions of the target CCUS project by clearly dividing the links and obtaining the monitoring data of the determined parameter items.

[0077] Preferably, in the embodiment of the present invention, the steps of calculating the emission amount may be as follows:

[0078] S41. Determine the corresponding accounting boundary according to the operating characteristics of the target CCUS project; the accounting boundary includes: each carbon dioxide tail gas emission point, each preset related system, carbon dioxide flooding storage area, and carbon dioxide geological escape monitoring boundary;

[0079] In the embodiment of the present invention, the carbon dioxide exhaust gas emission point specifically refers to the carbon dioxide exhaust gas emission point of energy and industrial facilities; the preset related systems may specifically include: a carbon dioxide capture system, a carbon dioxide transportation system, a carbon dioxide injection system (including a post-capture carbon dioxide injection system and a reinjection gas injection system), a crude oil lifting system, and an oil and gas gathering and transportation system and other related systems.

[0080] The carbon dioxide oil recovery and storage area in the embodiment of the present invention may specifically include the stratum where carbon dioxide is injected and the stratum where migration, dissolution, and mineralization occur; the carbon dioxide geological escape monitoring boundary is based on the geographical area where the project oil recovery and storage area is located, and extends outward by 1 kilometer.

[0081] S42. Calculate the project emissions using the following formula:

[0082] PE y =PE cat,y +PE trp,y +PE inj,y +PE lif,y +PE gat,y +PE car,y +PE org,y , (Formula 1);

[0083] In formula 1, PE y The emissions generated by the project activities in year y; PE cat,y is the project emission of carbon dioxide capture in year y; PE trp,y The project emission of carbon dioxide transport in year y; PE inj,y The project emissions of the carbon dioxide injection part in year y; PE lif The project emission of crude oil lifting part in year y; PE gat is the project emission of oil and gas gathering and transportation in year y; PE car,y is the carbon dioxide emissions carried by the external transport medium in year y; PE org,y Emissions from organized venting projects during operations in year y.

[0084] In this step, the specific values ​​or calculation methods of each parameter are as follows:

[0085] First, the project emissions of the carbon dioxide capture part in the embodiment of the present invention are the project emissions generated by the capture part of the carbon dioxide flooding and storage project, including emissions generated by fossil fuel combustion, and emissions generated by electricity and heat consumption. The calculation formula includes:

[0086] PE cat,y =PE cat,EL,y +PE cat,th,y , (Formula 1.1);

[0087] In formula 1.1, PE cat,y The project emissions generated by the capture part of the CO2 flooding and storage project in year y, in tons of CO2 (tCO 2 );PE cat,EL,y = The project emissions from the electricity consumed by the carbon dioxide capture part in year y, in tons of carbon dioxide (tCO 2 );PE cat,th,y The project emission of the heat consumed by the carbon dioxide capture part in year y, in tons of carbon dioxide (tCO 2 );

[0088] The calculation formula for project emissions from electricity consumption for CO2 capture is as follows:

[0089] PE EC,y =EC PJ,y ×EF EL,y , (Formula 1.1.1);

[0090] Among them, PE EC,y The project emissions generated by the electricity consumed by the project in year y, in tons of carbon dioxide (tCO 2 );EC PJ,y is the electricity consumed by the project in year y, in megawatt-hours (MWh); EF EL,y is the electricity emission factor for year y, in tons of carbon dioxide / MWh (tCO 2 / MWh).

[0091] The calculation formula for the project emissions generated by the heat consumption of the carbon dioxide capture part includes:

[0092] PE th,y =HG PJ,y ×EF th,y , (Formula 1.1.2);

[0093] HG PJ,y =Ma st,y ×(En st,y -En ht ), (Formula 1.1.3);

[0094] Among them, PE th,y The project emissions generated by the heat consumption of the project in year y, in tons of carbon dioxide (tCO 2 ); HG PJ,y is the thermal power purchased by the project in year y, in GJ; EF th,y is the heat production emission factor in year y, in tons of carbon dioxide / GJ (tCO 2 / GJ);Ma st,y The amount of heat consumed by the project in year y, in tons (t); En st,y En is the enthalpy of heat consumed by the project in year y, in GJ / t; ht It is the enthalpy of water at 20°C and 1 atmosphere pressure, expressed in gigajoules / ton (GJ / t).

[0095] Next, the project emissions of the carbon dioxide transportation part in the embodiment of the present invention are the project emissions generated by the transportation part of the carbon dioxide flooding and storage project, including emissions generated by fossil fuel combustion and emissions generated by electricity consumption, and the unit is tons of carbon dioxide (tCO 2 ), the calculation formula includes:

[0096] PE trp,y=PE trp,fuel,y +PE trp,EL,y , (Formula 1.2);

[0097] In formula 1.2, PE trp,y The project emissions generated by the transportation part of the CO2 flooding and storage project in year y, in tons of CO2 (tCO 2 );PE trp,fuel,y The carbon dioxide emissions from the transportation part of the project in year y are in tons of carbon dioxide (tCO 2 );PE trp,EL,y The project emission of carbon dioxide generated by the electricity consumed in the transportation part in year y, in tons of carbon dioxide (tCO 2 );

[0098] The calculation formula for the project emissions generated by the consumption of fossil fuels for the transportation of carbon dioxide includes:

[0099] PE emissions from projects consuming fossil fuels trp,fuel,y Equivalent to PE in the "Tool for Calculating Project or Leakage Emissions from Fossil Fuel Combustion" FC,j,y ;

[0100] PE trp,fuel,y =∑ j FC PJ,j,y ×NCV j,y ×EF CO2,j,y , (Formula 1.2.1);

[0101] Among them, PE trp,fuel,y The project emissions from fossil fuels consumed by the project in year y, in tons of carbon dioxide (tCO 2 );FC PJ,j,y The amount of fossil fuel j consumed by the project in year y, in tons or cubic meters (t or m 3 ); NCV j,y The lower calorific value of fossil fuel j consumed by the project in year y, in GJ / t or GJ / m 3 );EF CO2,j,y is the carbon dioxide emission factor of the fossil fuel j consumed by the project in year y, in tons of carbon dioxide / GJ (tCO 2 / GJ);

[0102] The calculation formula for the project emissions of carbon dioxide generated by the electricity consumed in the transportation part includes:

[0103] PE trp,EL,y =EC trp,y ×EF EL,y , (Formula 1.2.2)

[0104] Among them, PE trp,EL,y The project emission of carbon dioxide generated by the electricity consumed in the transportation part in year y, in tons of carbon dioxide (tCO 2 );EC trp,y is the electricity consumed by the carbon dioxide transport part in year y, in megawatt-hours (MWh); EF EL,y is the electricity emission factor for year y, in tons of carbon dioxide / MWh (tCO 2 / MWh).

[0105] Furthermore, in the embodiment of the present invention, when the parameters in formula 1.2 are not available, the project emissions of the carbon dioxide transport part can also be calculated using formula 1.8, specifically:

[0106] PE trp,y =∑ j D j,y ×FE trp,km,j,y ×NCV j,y ×EF j,y ×M CO2,trp,j,y ×n trp,j,y ,(formula 1.8);

[0108] Among them, PE trp,y The emission of the CO2 flooding and storage project in the year y, in tons of CO2 (tCO 2 );D j,y is the distance of carbon dioxide transported by means of transportation using fossil fuel j in year y, in kilometers (km); FE trp,km,j,y = The fuel economy of transporting CO2 using fossil fuels, ton fuel / km / ton CO2 (t / (km·tCO 2 ));NCV j,y is the net calorific value of fossil fuel j, GJ / t; EF j,y is the calorific value emission factor of fossil fuel j, tons of carbon dioxide / GJ (tCO 2 / GJ);M CO2,trp,j,y is the amount of carbon dioxide transported by a transportation vehicle using fossil fuel j in year y, tons of carbon dioxide (tCO 2 );n trp,j,y is the number of times carbon dioxide is transported by means of transportation using fossil fuel j in year y, in times.

[0109] Next, the project emissions generated by the carbon dioxide injection part in the embodiment of the present invention, including the emissions generated by electricity consumption, are expressed in tons of carbon dioxide (tCO 2 ), the calculation formula includes:

[0110] PEinj,y =PE inj,EL,y , (Formula 1.3);

[0111] In formula 1.3, PE inj,y The project emissions generated by the carbon dioxide injection part in year y, in tons of carbon dioxide (tCO 2 );PE inj,EL,y The project emissions generated by the electricity consumed by the CO2 injection well in year y, in tons of CO2 (tCO 2 );

[0112] Next, the project emissions of the crude oil lifting part in the embodiment of the present invention, including the emissions caused by electricity consumption, are expressed in tons of carbon dioxide (tCO 2 ), the calculation formula includes:

[0113] PE lif,y =PE lif,EL,y , (Formula 1.4);

[0114] In formula 1.4, PE lif,y The project emissions of crude oil lifting in year y, including emissions from electricity consumption, in tons of carbon dioxide (tCO 2 );PE lif,EL,y The project emissions generated by the electricity consumed in the crude oil lifting part in year y, in tons of carbon dioxide (tCO 2 );

[0115] Next, the project emissions of the oil and gas gathering and transportation part in the embodiment of the present invention include emissions from the combustion of fossil fuels, and emissions from the consumption of electricity and heat, in tons of carbon dioxide (tCO 2 ), the calculation formula includes:

[0116] PE gat,y =PE gat,fuel,y +PE gat,EL,y +PE gat,th,y , (Formula 1.5);

[0117] In formula 1.5, PE gat,y The emission of oil and gas gathering and transportation projects in year y, in tons of carbon dioxide (tCO 2 );PE gat,fuel,y The project emissions from the consumption of fossil fuels in oil and gas gathering and transportation in year y, in tons of carbon dioxide (tCO 2 );PE gat,EL,y The project emissions generated by electricity consumption in oil and gas gathering and transportation in year y, in tons of carbon dioxide (tCO 2 );PE gat,th,y The project emissions generated by the consumption of heat for oil and gas gathering and transportation in year y, in tons of carbon dioxide (tCO2 );

[0118] Next, the carbon dioxide emissions carried by the external transport medium in the embodiment of the present invention are the carbon dioxide carried by the external transport medium of the project to the outside of the boundary, and the unit is tons of carbon dioxide (t CO 2 ), the calculation formula includes:

[0119] PE car,y =∑ j AD out,j,y ×Φ out,j,y , (Formula 1.6);

[0120] In formula 1.6, PE car,y The carbon dioxide carried by the external medium of the project to the outside of the boundary in year y, in tons of carbon dioxide (tCO 2 );AD out,j,y The volume of the jth type of external medium of the project in year y, in tons or cubic meters (t or m 3 );Φ out,j,y The mass fraction of carbon dioxide in the jth type of external medium of the project in year y, in tons / ton or tons / cubic meter (t / t or t / m 3 ); the project's external transmission medium includes crude oil and / or natural gas;

[0121] Next, the emissions from the organized venting in the operation of the embodiment of the present invention are measured in tons of carbon dioxide (tCO 2 ), the calculation formula includes:

[0122] PE org,y =PE iw,y +PE pw,y , (Formula 1.7);

[0123] In formula 1.7, PE org,y The emission of organized venting in the operation in year y, in tons of carbon dioxide (tCO 2 );PE iw,y The project emissions caused by injection well venting due to injection well maintenance operations in year y, in tons of carbon dioxide (tCO 2 );PE pw,y The project emissions caused by the emptying of the production well due to maintenance work in the production well in year y, in tons of carbon dioxide (tCO 2 ).

[0124] Specifically, the specific calculation method of each parameter in formula 1.7 in the embodiment of the present invention may include:

[0125] In order to ensure the fairness of accounting when the emission reduction of the project needs to be converted into carbon asset trading in the future, in the embodiment of the present invention, if the injection well maintenance operation causes the injection well to be emptied, according to the conservative principle, the temperature and pressure at the wellhead and the bottom of the well are measured, and the calculation is based on the maximum density of the carbon dioxide fluid.

[0126] At this time, the project discharge PE generated by the injection well emptying caused by the injection well maintenance operation iw,y The calculation formula includes:

[0127] PE iw,y =∑ j V iw,j,y ×ω iw,F,v,j,y ×ρ iw,CO2,n,B,j,y , (Formula 1.7.1)

[0128]

[0129] Among them, V iw,j,y is the volume of the injection string of the jth injection well in year y, in cubic meters (m 3 );ω iw,F,v,j,y is the volume concentration of carbon dioxide injected into the fluid at the jth injection well in the yth year, dimensionless; ρ iw,CO2,n,B,j,y is the density of carbon dioxide injected into the jth injection well in year y, g / cm3 (g / cm 3 );P iw,n,B,j,y is the pressure of fluid injected into the jth injection well in year y, Pascal (Pa); MM CO2 is the molecular weight of carbon dioxide, kg / kilogram mole (kg / kmol); T iw,n,B,j,y is the temperature of the fluid injected into the jth injection well in year y, Kelvin (K); R u is the ideal gas constant, 8314 Pa·m3 / kmole·Kelvin (Pa·m 3 / (kmol·K)).

[0130] Production wells are different from injection wells. Injection wells inject only gas, while production wells also produce liquid crude oil. Therefore, in order to ensure the quality of crude oil, it is necessary to measure the data related to the properties of the produced liquid (such as the recovery of produced liquid in the pipe string, the measurement of gas-oil ratio, the amount of recovered crude oil and the carbon dioxide concentration of the produced gas, etc.); in the embodiment of the present invention, these data are transferred to the CO 2 Calculation of emissions; Specifically: In the embodiment of the present invention, if the maintenance operation of the production well causes the carbon dioxide in the pipe string to be vented, it is necessary to recover the produced fluid in the pipe string, measure the gas-oil ratio, the amount of recovered crude oil and the carbon dioxide concentration of the produced gas, and calculate the carbon dioxide carried in the produced fluid

[0131] At this time, the calculation formula for the project emissions caused by the emptying of the production well due to maintenance work of the production well includes:

[0132] PE pw,y =∑ j W pw,oil,j,y ×θ pw,F,j,y ×ω pw,F,v,j,y ×ρ pw,CO2,n,B,j,y , (Formula 1.7.3);

[0133]

[0134] In formula 1.7.3 and formula 1.7.4, W pw,oil,j,y is the amount of crude oil recovered from the jth operating well in year y, tons (t); θ pw,F,j,y is the gas-oil ratio of the fluid produced from the jth production well in the yth year, cubic meters / ton (m 3 / t);ω pw,F,v,j,y is the volume concentration of carbon dioxide in the gas produced from the jth production well in the yth year, dimensionless; ρ pw,CO2,n,B,j,y is the density of gas produced from the jth production well in the yth year, g / cm3 (g / cm 3 );P pw,n,B,j,y is the pressure of the fluid produced in the jth production well in the yth year, Pascal (Pa); MM CO2 is the molar mass of carbon dioxide, kg / kmol; T pw,n,B,j,y is the temperature of the fluid produced at the jth production well in the yth year, Kelvin (K); R u is the ideal gas constant, 8314 Pa·m3 / kmole·Kelvin (Pa·m 3 / kmol·K).

[0135] In summary, the embodiment of the present invention performs targeted calculations on the emissions of organized venting projects in operations. 2Specifically: During the oil and gas production stage, in order to ensure the safety of the production process and prevent abnormal wellbore pressure from causing collapse and other production safety accidents, the bottom hole and wellhead pressure of the injection well and the production well are usually monitored. However, in the past, this part of the monitoring was only to ensure the safety of production and was not used to calculate the total amount of injected or produced gas. After research, the inventors found that these existing wellbore monitoring data can be used to indirectly calculate the emission of organized venting projects. The density of the injected or produced gas is calculated by the changes in the bottom hole and wellhead pressure and temperature of the injection well and the production well, and then combined with the volume of the wellbore, the gas value can be calculated. This method can be done directly by using the existing monitoring data of the wellbore without installing instruments or using other means to additionally monitor the flow and concentration of the injected gas. In general, the oil and gas production situation is complicated, and direct monitoring of CO 2 The concentration and flow rate monitoring results have large errors, so the indirect calculation method proposed in the present invention is more accurate and convenient. In summary, in the embodiment of the present invention, by accurately calculating the effective injection, and adding the calculation of the emission of the organized venting project in the operation, the accuracy of the emission monitoring of the CCUS project is effectively improved.

[0136] Embodiment 2

[0137] In another aspect of the embodiment of the present invention, an emission monitoring device for a CCUS project is also provided. Figure 2 A schematic diagram showing the structure of an emission monitoring device for a CCUS project provided by an embodiment of the present invention is shown. The emission monitoring device for a CCUS project is Figure 1 The device corresponding to the emission monitoring method of the CCUS project described in the corresponding embodiment, that is, implemented by means of a virtual device Figure 1 The emission monitoring method of the CCUS project in the corresponding embodiment, each virtual module constituting the emission monitoring device of the CCUS project can be executed by an electronic device, such as a network device, a terminal device, or a server. Specifically, the emission monitoring device of the CCUS project in the embodiment of the present invention includes:

[0138] Link division unit 01 is used to divide the CCUS project into multiple links; the links include: capture, transportation, injection, gathering and transportation, lifting, separation and recovery of produced gas, reinjection, ground processing and external transmission;

[0139] The emission source identification unit 02 is used to respectively identify the greenhouse gas emission sources of each link, and set corresponding monitoring instruments or detection means according to each emission source; wherein, the emission sources of the ground treatment include the organized venting emissions of the injection well maintenance operation and the organized venting emissions generated by the production well maintenance operation; the emission volume of the ground treatment needs to be monitored at each venting;

[0140] A data acquisition unit 03 is used to acquire monitoring data of each monitoring parameter item in each link according to the monitoring instrument or the detection means;

[0141] The emission calculation unit 04 is used to calculate the emission of the target CCUS project according to a preset algorithm using the monitoring data as a parameter.

[0142] Preferably, in the embodiment of the present invention, the emission calculation unit 04 may specifically include:

[0143] The boundary determination module (not shown in the figure) is used to determine the corresponding accounting boundary according to the operating characteristics of the target CCUS project; the accounting boundary includes: each carbon dioxide tail gas emission point, each preset related system, carbon dioxide flooding storage area, and carbon dioxide geological escape monitoring boundary;

[0144] The emission calculation module (not shown in the figure) is used to calculate the project emissions. The calculation formula includes:

[0145] PE y =PE cat,y +PE trp,y +PE inj,y +PE lif,y +PE gat,y +PE car,y +PE org,y , (Formula 1);

[0146] In formula 1, PE y The emissions generated by the project activities in year y; PE cat,y is the project emission of carbon dioxide capture in year y; PE trp,y The project emission of carbon dioxide transport in year y; PE inj,y The project emissions of the carbon dioxide injection part in year y; PE lif The project emission of crude oil lifting part in year y; PE gat is the project emission of oil and gas gathering and transportation in year y; PE car,y is the carbon dioxide emissions carried by the external transport medium in year y; PE org,y Emissions from organized venting projects during operations in year y.

[0147] Since the working principle and beneficial effects of the emission monitoring device for CCUS project in the embodiment of the present invention have been Figure 1 The emission monitoring methods of the corresponding CCUS projects are also recorded and explained, so they can be cross-referenced and will not be repeated here.

[0148] Embodiment 3

[0149] Corresponding to the method embodiment, in the embodiment of the present invention, there is also provided an emission monitoring device for a CCUS project, such as a terminal, a server, etc. Among them, the server can be an independent physical server, or a server cluster or a distributed system composed of multiple physical servers, or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms. The terminal can be a smart phone, a tablet computer, a laptop computer, a desktop computer, etc., but is not limited thereto.

[0150] An example diagram of a hardware structure block diagram of an emission monitoring device for a CCUS project provided by an embodiment of the present invention is shown in FIG. Figure 3 As shown, this may include:

[0151] Processor 1, communication interface 2, memory 3 and communication bus 4;

[0152] The processor 1, the communication interface 2, and the memory 3 communicate with each other via the communication bus 4;

[0153] Optionally, the communication interface 2 may be an interface of a communication module, such as an interface of a GSM module;

[0154] The processor 1 may be a central processing unit CPU, or an application-specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present application.

[0155] The memory 3 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0156] The processor 1 is specifically used to execute the computer program stored in the memory 3 to perform the following steps:

[0157] S11. Divide the CCUS project into multiple links; the links include: capture, transportation, injection, gathering, lifting, separation and recovery of produced gas, reinjection, ground processing and external transmission;

[0158] S12. Identify the greenhouse gas emission sources of each link respectively, and set corresponding monitoring instruments or detection means according to each emission source; wherein, the emission sources of the ground treatment include the organized venting emissions from the injection well maintenance operation and the organized venting emissions from the production well maintenance operation; the emission volume of the ground treatment needs to be monitored every time it is vented;

[0159] S13, obtaining monitoring data of each monitoring parameter item in each link according to the monitoring instrument or the detection means;

[0160] S14. Using the monitoring data as parameters, calculate the emissions of the target CCUS project according to a preset algorithm.

[0161] The above product can execute the method provided in the embodiment of the present invention, and has the functional modules and beneficial effects corresponding to the execution method. For technical details not fully described in this embodiment, please refer to the emission monitoring method of CCUS project provided in the embodiment of the present invention.

[0162] Embodiment 4

[0163] In an embodiment of the present invention, a storage medium is further provided, which may store a program suitable for execution by a processor, wherein the program is used to:

[0164] S11. Divide the CCUS project into multiple links; the links include: capture, transportation, injection, gathering, lifting, separation and recovery of produced gas, reinjection, ground processing and external transmission;

[0165] S12. Identify the greenhouse gas emission sources of each link respectively, and set corresponding monitoring instruments or detection means according to each emission source; wherein, the emission sources of the ground treatment include the organized venting emissions from the injection well maintenance operation and the organized venting emissions from the production well maintenance operation; the emission volume of the ground treatment needs to be monitored every time it is vented;

[0166] S13, obtaining monitoring data of each monitoring parameter item in each link according to the monitoring instrument or the detection means;

[0167] S14. Using the monitoring data as parameters, calculate the emissions of the target CCUS project according to a preset algorithm.

[0168] Optionally, the detailed functions and extended functions of the program may refer to the above description.

[0169] The above product can execute the method provided by the embodiment of the present invention, and has the functional modules and beneficial effects corresponding to the execution method. For technical details not described in detail in this embodiment, please refer to the methods provided by other embodiments of the present invention.

[0170] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0171] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0172] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0173] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0174] It should be understood that in the embodiments of the present application, the various embodiments and features can be combined with each other to solve the aforementioned technical problems.

[0175] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0176] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for monitoring emissions from CCUS projects, It is characterized in that Includes steps: S11. Divide the CCUS project into multiple links; the links include: capture, transportation, injection, gathering, lifting, separation and recovery of produced gas, reinjection, ground processing and external transmission; S12. Identify the greenhouse gas emission sources of each link respectively, and set corresponding monitoring instruments or detection means according to each emission source; wherein, the emission sources of the ground treatment include the organized venting emissions from the injection well maintenance operation and the organized venting emissions from the production well maintenance operation; the emission volume of the ground treatment needs to be monitored every time it is vented; S13, obtaining monitoring data of each monitoring parameter item in each link according to the monitoring instrument or the detection means; S14. Using the monitoring data as parameters, calculate the emissions of the target CCUS project according to a preset algorithm.

2. The emission monitoring method of the CCUS project according to claim 1, It is characterized in that The preset algorithm includes: S41. Determine the corresponding accounting boundary according to the operating characteristics of the target CCUS project; the accounting boundary includes: each carbon dioxide tail gas emission point, each preset related system, carbon dioxide flooding storage area, and carbon dioxide geological escape monitoring boundary; S42. Calculate the project emissions using the following formula: PE y = PE cat,y + PE trp,y + PE inj,y + PE lif,y + PE gat,y + PE car,y + PE org,y , (Formula 1); In formula 1, PE y The emissions generated by the project activities in year y; PE cat,y is the project emission of carbon dioxide capture in year y; PE trp,y The project emission of carbon dioxide transport in year y; PE inj,y The project emissions of the carbon dioxide injection part in year y; PE lif The project emission of crude oil lifting part in year y; PE gat is the project emission of oil and gas gathering and transportation in year y; PE car,y is the carbon dioxide emissions carried by the external transport medium in year y; PE org,y Emissions from organized venting projects during operations in year y.

3. The emission monitoring method of the CCUS project according to claim 2, It is characterized in that The carbon dioxide tail gas emission points include carbon dioxide tail gas emission points of energy and industrial facilities; The preset related systems include: a carbon dioxide capture system, a carbon dioxide transmission system, a carbon dioxide injection system, a crude oil lifting system and an oil and gas gathering and transportation system; The carbon dioxide flooding and storage area includes the stratum where the carbon dioxide is injected and where migration, dissolution and mineralization occur; The carbon dioxide geological escape monitoring boundary is based on the geographical area where the project's oil recovery and storage area is located, and extends outward by 1 kilometer.

4. The emission monitoring method of the CCUS project according to claim 3, It is characterized in that include: The CO2 capture part of the project emissions refers to the project emissions generated by the capture part of the CO2 flooding and storage project, including emissions from fossil fuel combustion, electricity and heat consumption. The calculation formula includes: INSTEAD cat,y =PE cat,EL,y +PE cat,th,y ,(in 1.1): In formula 1.1, PE cat,y The project emissions generated by the capture part of the CO2 flooding and storage project in year y, in tons of CO2 (tCO 2 );PE cat,EL,y = The project emissions from the electricity consumed by the carbon dioxide capture part in year y, in tons of carbon dioxide (tCO 2 );PE cat,th,y The project emission of the heat consumed by the carbon dioxide capture part in year y, in tons of carbon dioxide (tCO 2 ); The CO2 transport part of the project emissions refers to the project emissions generated by the transportation part of the CO2 flooding and storage project, including emissions from fossil fuel combustion and electricity consumption, in tons of CO2 (tCO 2 ), the calculation formula includes: INSTEAD trp,y =PE trp,fuel,y +PE trp,EL,y ;(Section 1.2); In formula 1.2, PE trp,y The project emissions generated by the transportation part of the CO2 flooding and storage project in year y, in tons of CO2 (tCO 2 );PE trp,fuel,y The carbon dioxide emissions from the transportation part of the project in year y are in tons of carbon dioxide (tCO 2 );PE trp,EL,y The project emission of carbon dioxide generated by the electricity consumed in the transportation part in year y, in tons of carbon dioxide (tCO 2 ); Project emissions from CO2 injection, including emissions from electricity consumption, in tons of CO2 (tCO 2 ), the calculation formula includes: INSTEAD inj,y =PE inj,EL,y (In 1.3); In formula 1.3, PE inj,y The project emissions generated by the carbon dioxide injection part in year y, in tons of carbon dioxide (tCO 2 );PE inj,EL,y The project emissions generated by the electricity consumed by the CO2 injection well in year y, in tons of CO2 (tCO 2 ); Project emissions from crude oil lifting, including emissions from electricity consumption, in tons of carbon dioxide (tCO 2 ), the calculation formula includes: INSTEAD lif,y =PE lif,EL,y ;(in 1.4); In formula 1.4, PE lif,y The project emissions of crude oil lifting in year y, including emissions from electricity consumption, in tons of carbon dioxide (tCO 2 );PE lif,EL,y The project emissions generated by the electricity consumed in the crude oil lifting part in year y, in tons of carbon dioxide (tCO 2 ); Emissions from oil and gas gathering and transportation projects include emissions from fossil fuel combustion, electricity and heat consumption, measured in tons of carbon dioxide (tCO 2 ), the calculation formula includes: INSTEAD gat,y =PE gat,fuel,y +PE gat,EL,y +PE gat,th,y ;(in 1.5); In formula 1.5, PE gat,y The emission of oil and gas gathering and transportation projects in year y, in tons of carbon dioxide (tCO 2 );PE gat,fuel,y The project emissions from the consumption of fossil fuels in oil and gas gathering and transportation in year y, in tons of carbon dioxide (tCO 2 );PE gat,EL,y The project emissions generated by electricity consumption in oil and gas gathering and transportation in year y, in tons of carbon dioxide (tCO 2 );PE gat,th,y The project emissions generated by the consumption of heat for oil and gas gathering and transportation in year y, in tons of carbon dioxide (tCO 2 ); The carbon dioxide emissions carried by the external transport medium are the carbon dioxide carried by the external transport medium of the project to the outside of the boundary, in tons of carbon dioxide (t CO 2 ), the calculation formula includes: PE car,y = ∑ j AD out,j,y ×Φ out,j,y , (Formula 1.6); In formula 1.6, PE car,y The carbon dioxide carried by the external medium of the project to the outside of the boundary in year y, in tons of carbon dioxide (tCO 2 );AD out,j,y The volume of the jth type of external medium of the project in year y, in tons or cubic meters (t or m 3 );Φ out,j,y The mass fraction of carbon dioxide in the jth type of external medium of the project in year y, in tons / ton or tons / cubic meter (t / t or t / m 3 ); the project's external transmission medium includes crude oil and / or natural gas; Emissions from organized venting during operation, in tons of carbon dioxide (t CO 2 ), the calculation formula includes: PE org,y = PE iw,y + PE pw,y , (Equation 1.7); In formula 1.7, PE org,y The emission of organized venting in the operation in year y, in tons of carbon dioxide (tCO 2 );PE iw,y The project emissions caused by injection well venting due to injection well maintenance operations in year y, in tons of carbon dioxide (tCO 2 );PE pw,y The project emissions caused by the emptying of the production well due to maintenance work in the production well in year y, in tons of carbon dioxide (tCO 2 ).

5. The emission monitoring method of the CCUS project according to claim 4, It is characterized in that The project emission PE generated by the injection well venting caused by the injection well maintenance operation iw,y The calculation formula include: PE iw,y =∑ j V iw,j,y ×ω iw,F,v,j,y ×ρ iw,CO2,n,B,j,y , (Formula 1.7.1); Among them, V iw,j,y is the volume of the injection string of the jth injection well in year y, cubic meters (m 3 );ω iw,F,v,j,y is the volume concentration of carbon dioxide injected into the fluid at the jth injection well in the yth year, dimensionless; ρ iw,CO2,n,B,j,y is the density of carbon dioxide injected into the jth injection well in year y, g / cm3 (g / cm 3 );P iw,n,B,j,y is the pressure of fluid injected into the jth injection well in year y, Pascal (Pa); MM CO2 is the molecular weight of carbon dioxide, kg / kilogram mole (kg / kmol); T iw,n,B,j,y is the temperature of the fluid injected into the jth injection well in year y, Kelvin (K); R u is the ideal gas constant, 8314 Pa·m3 / kmole·Kelvin (Pa·m 3 / (kmol·K)).

6. The emission monitoring method of the CCUS project according to claim 5, It is characterized in that The calculation formula for the project emissions caused by the emptying of the production well due to maintenance work of the production well includes: PE pw,y = ∑ j W pw,oil,j,y ×θ pw,F,j,y ×ω pw,F,v,j,y ×ρ pw,CO2,n,B,j,y , (Formula 1.7.3); Among them, W pw,oil,j,y is the amount of crude oil recovered from the jth operating well in year y, tons (t); θ pw,F,j,y is the gas-oil ratio of the fluid produced from the jth production well in the yth year, cubic meters / ton (m 3 / t);ω pw,F,v,j,y is the volume concentration of carbon dioxide in the gas produced from the jth production well in the yth year, dimensionless; ρ pw,CO2,n,B,j,y is the density of gas produced from the jth production well in the yth year, g / cm3 (g / cm 3 );P pw,n,B,j,y is the pressure of the fluid produced in the jth production well in the yth year, Pascal (Pa); MM CO2 is the molar mass of carbon dioxide, kg / kmol; T pw,n,B,j,y is the temperature of the fluid produced at the jth production well in the yth year, Kelvin (K); R u is the ideal gas constant, 8314 Pa·m3 / kmole·Kelvin (Pa·m 3 / kmol·K).

7. The emission monitoring method of CCUS project according to claim 4, It is characterized in that The calculation formula for the project emissions generated by the electricity consumed by the carbon dioxide capture part includes: PE EC,y =EC PJ,y ×EF EL,y , (Formula 1.1.1); Among them, PE EC,y The project emissions generated by the electricity consumed by the project in year y, in tons of carbon dioxide (tCO 2 );EC PJ,y is the electricity consumed by the project in year y, in megawatt-hours (MWh); EF EL,y is the electricity emission factor for year y, in tons of carbon dioxide / MWh (tCO 2 / MWh).

8. The emission monitoring method of CCUS project according to claim 4, It is characterized in that The calculation formula for the project emissions generated by the heat consumption of the carbon dioxide capture part includes: PE th,y =HG PJ,y ×EF th,y , (Formula 1.1.2); HG PJ,y = Ma st,y × (En st,y - En ht ), (Equation 1.1.3); Among them, PE th,y The project emissions generated by the heat consumption of the project in year y, in tons of carbon dioxide (tCO 2 ); HG PJ,y is the thermal power purchased by the project in year y, in GJ; EF th,y is the heat production emission factor in year y, in tons of carbon dioxide / GJ (tCO 2 / GJ);Ma st,y The amount of heat consumed by the project in year y, in tons (t); En st,y En is the enthalpy of heat consumed by the project in year y, in GJ / t; ht It is the enthalpy of water at 20°C and 1 atmosphere pressure, expressed in gigajoules / ton (GJ / t).

9. The emission monitoring method of CCUS project according to claim 4, It is characterized in that The calculation formula for the project emissions of carbon dioxide transportation part produced by consuming fossil fuels includes: PE emissions from projects consuming fossil fuels trp,fuel,y Equivalent to PE in the "Tool for Calculating Project or Leakage Emissions from Fossil Fuel Combustion" FC,j,y ; PE trp,fuel,y =∑ j FC PJ,j,y ×NCV j,y ×EF CO2,j,y , (Formula 1.2.1); Among them, PE trp,fuel,y The project emissions from fossil fuels consumed by the project in year y, in tons of carbon dioxide (tCO 2 );FC PJ,j,y The amount of fossil fuel j consumed by the project in year y, in tons or cubic meters (t or m 3 ); NCV j,y The lower calorific value of fossil fuel j consumed by the project in year y, in GJ / t or GJ / m 3 );EF CO2,j,y is the carbon dioxide emission factor of the fossil fuel j consumed by the project in year y, in tons of carbon dioxide / GJ (tCO 2 / GJ); The calculation formula for the project emissions of carbon dioxide generated by the electricity consumed in the transportation part includes: PE trp,EL,y =EC trp,y ×EF EL,y , (Formula 1.2.2) Among them, PE trp,EL,y The project emission of carbon dioxide generated by the electricity consumed in the transportation part in year y, in tons of carbon dioxide (tCO 2 );EC trp,y is the electricity consumed by the carbon dioxide transport part in year y, in megawatt-hours (MWh); EF EL,y is the electricity emission factor for year y, in tons of carbon dioxide / MWh (tCO 2 / MWh).

10. The emission monitoring method of CCUS project according to claim 4, It is characterized in that The calculation formula for the project emissions of the carbon dioxide delivery part may also include: PE trp,fuel,y =∑ j D j,y ×FE trp,km,j,y ×NCV j,y ×EF j,y ×M CO2,trp,j,y ×n trp,j,y , (Formula 1.8); Among them, PE trp,y The emission of the CO2 flooding and storage project in the year y, in tons of CO2 (tCO 2 );D j,y is the distance of carbon dioxide transported by means of transportation using fossil fuel j in year y, in kilometers (km); FE trp,km,j,y = The fuel economy of transporting CO2 using fossil fuels, ton fuel / km / ton CO2 (t / (km·tCO 2 ));NCV j,y is the net calorific value of fossil fuel j, GJ / t; EF j,y is the calorific value emission factor of fossil fuel j, tons of carbon dioxide / GJ (tCO 2 / GJ);M CO2,trp,j,y is the amount of carbon dioxide transported by a transportation vehicle using fossil fuel j in year y, tons of carbon dioxide (tCO 2 );n trp,j,y is the number of times carbon dioxide is transported by means of transportation using fossil fuel j in year y, in times.

11. An emission monitoring device for CCUS projects, It is characterized in that include: The link division unit is used to divide the CCUS project into multiple links; the links include: capture, transportation, injection, gathering and transportation, lifting, separation and recovery of produced gas, reinjection, ground processing and external transmission; An emission source identification unit is used to respectively identify the greenhouse gas emission sources of each link, and set corresponding monitoring instruments or detection means according to each emission source; wherein, the emission sources of the surface treatment include the organized venting emissions from the injection well maintenance operation and the organized venting emissions from the production well maintenance operation; the emission volume of the surface treatment needs to be monitored at each venting; A data acquisition unit, used to acquire monitoring data of each monitoring parameter item in each link according to the monitoring instrument or the detection means; The emission calculation unit is used to calculate the emission of the target CCUS project according to a preset algorithm using the monitoring data as a parameter.

12. The emission monitoring device for CCUS project according to claim 11, It is characterized in that The emission calculation unit comprises: A boundary determination module is used to determine the corresponding accounting boundary according to the operating characteristics of the target CCUS project; the accounting boundary includes: each carbon dioxide tail gas emission point, each preset related system, carbon dioxide flooding storage area, and carbon dioxide geological escape monitoring boundary; The emission calculation module is used to calculate the project emissions. The calculation formula includes: PE y = PE cat,y + PE trp,y + PE inj,y + PE lif,y + PE gat,y + PE car,y + PE org,y , (Formula 1); In formula 1, PE y The emissions generated by the project activities in year y; PE cat,y is the project emission of carbon dioxide capture in year y; PE trp,y The project emission of carbon dioxide transport in year y; PE inj,y The project emissions of the carbon dioxide injection part in year y; PE lif The project emission of crude oil lifting part in year y; PE gat is the project emission of oil and gas gathering and transportation in year y; PE car,y is the carbon dioxide emissions carried by the external transport medium in year y; PE org,y Emissions from organized venting projects during operations in year y.

13. An emission monitoring device for CCUS projects, It is characterized in that include: Memory for storing computer programs; A processor is used to call and execute the computer program to implement the steps of the emission monitoring method for a CCUS project as described in any one of claims 1 to 10.

14. A storage medium, It is characterized in that The method comprises a software program, wherein the software program is suitable for executing the steps of the emission monitoring method for a CCUS project according to any one of claims 1 to 10 by a processor.

Images