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CN-122023055-A - Carbon dioxide flooding and sealing project emission reduction accounting method

CN122023055ACN 122023055 ACN122023055 ACN 122023055ACN-122023055-A

Abstract

The invention discloses a carbon dioxide flooding and sealing project emission reduction accounting method, which comprises the following steps of S10, identifying facilities, service ranges and production processes related to a project, S20, determining accounting boundaries and datum line scenes, S30, determining carbon dioxide emission sources and carbon dioxide injection sources under the project and datum line scenes, S40, respectively calculating carbon dioxide emission and injection amounts of the project and the datum line scenes, and S50, calculating project carbon dioxide emission reduction, including calculating carbon emission generated by project activities and calculating carbon emission reduction, wherein the carbon emission reduction is calculated as follows: Wherein E R,y is the emission reduction amount of the y-th year, E B,y is the reference line carbon emission amount of the y-th year, E P,y is the project carbon emission amount of the y-th year, and E L,y is the leakage amount of the y-th year.

Inventors

  • WU BO
  • LUN XIAOXIU

Assignees

  • 北京林业大学

Dates

Publication Date
20260512
Application Date
20260213

Claims (7)

  1. 1. The method for accounting the emission reduction of the carbon dioxide flooding project is characterized by comprising the following steps of: s10, identifying facilities, service ranges and production processes related to the project; s20, determining an accounting boundary and a datum line scene, wherein the accounting boundary comprises an injection period, a stop injection period and a stop operation period; s30, determining a carbon dioxide emission source and a carbon dioxide injection source under project and datum line scenes; s40, respectively calculating carbon dioxide emission and injection amounts of project and reference line scenes, and S50, calculating project carbon dioxide emission reduction, including calculating carbon emission generated by the project activity according to the boundary and carbon dioxide emission sources included in the boundary, and calculating carbon emission reduction according to the carbon emission generated by the project and the carbon emission generated by the datum line scene; wherein, the carbon emission reduction volume is calculated as follows: Wherein E R,y is the emission reduction amount of the y-th year, E B,y is the reference line carbon emission amount of the y-th year, E P,y is the project carbon emission amount of the y-th year, and E L,y is the leakage amount of the y-th year.
  2. 2. The method for accounting for carbon dioxide flooding seal project emission reduction as set forth in claim 1, wherein in S20, the boundary comprises at least one of a carbon dioxide-containing tail gas emission point, a carbon dioxide capture system, a carbon dioxide delivery system, a carbon dioxide injection system, a carbon dioxide flooding seal area, and a carbon dioxide geological emission monitoring boundary of an energy and industrial facility.
  3. 3. The method for accounting for carbon dioxide flooding conservation project emission reduction as defined in claim 1, wherein in S30, the carbon dioxide emission source comprises at least one of steam and power consumption during capture, fossil fuel combustion and power consumption during transportation, fossil fuel combustion and power consumption during carbon dioxide compression, power consumption during injection, dissipation during processing, and organized air release during operation.
  4. 4. The method for accounting for the reduced emissions of a carbon dioxide flooding sequestration project of claim 1, wherein the baseline scenario comprises three types of scenarios: If the carbon dioxide injection process for directly serving the project is not originally involved in the accounting boundary, namely the carbon dioxide injection amount is 0 ton, and the carbon dioxide injection amount is newly increased through the newly built production capacity, the project belongs to the newly built project, and the datum line scene is only accounting for various carbon dioxide emission amounts in the project boundary; The improvement project is that if the production index is changed and the carbon dioxide injection amount and various carbon dioxide discharge amounts are changed by technical improvement, technical upgrading and process optimization means on the basis of maintaining the existing production capacity, the project belongs to the improvement project, and the reference line scene is the production technology before improvement; And (3) the extension project is that if the existing process is changed by technical transformation, technical upgrading and process optimizing means on the basis of the existing production capacity, or the new production capacity is established, the production scale is increased, and finally the number of products is increased, the extension project belongs to the extension project.
  5. 5. The method for accounting the reduction capacity of the carbon dioxide flooding conservation project is characterized in that the reference line is determined according to the transformation project by improving the number of products through technical transformation, technical upgrading and process optimization means, and the reference line is determined according to the new project by improving the number of products through new production capacity and increasing the production scale means.
  6. 6. The method for accounting for carbon dioxide flooding conservation project emission reduction of claim 1, wherein S40, the carbon emission generated by the baseline scenario is calculated according to the following formula: Wherein E B,y is the baseline emission generated in the y-th year, W iw0,F,y is the mass of fluid injected by the y-th year injection well, and omega iw0,F,m,y is the carbon dioxide mass concentration of fluid injected by the y-th year injection well.
  7. 7. The method for accounting for carbon dioxide flooding sequestration project emission reduction as defined in claim 6, wherein the carbon emissions generated by the project activity are calculated according to the boundary and carbon dioxide emissions sources included in the boundary according to the following formula: Wherein E P,y is the emission of the project in the y year, E PC,y is the emission of carbon generated by energy consumption in the y-year capturing system, E PT,y is the emission of carbon generated by energy consumption in the y-year transporting system, E PE,y is the emission of carbon generated by energy consumption in the y-year CO 2 injection system, E Pv,y is the emission of carbon generated by the discharge of the process in the y year, and E Pe,y is the emission of carbon generated by the dissipation of the process in the y year.

Description

Carbon dioxide flooding and sealing project emission reduction accounting method Technical Field The invention relates to the technical field of carbon emission reduction, in particular to a carbon dioxide flooding oil sealing (CCUS-EOR) emission reduction accounting method. Background Carbon dioxide flooding oil sealing (CCUS-EOR) is taken as one of the most effective carbon emission reduction ways at the present stage, so that a large amount of CO 2 can be sealed, petroleum can be increased, and the method is the most feasible technical means for realizing low carbonization and utilization of fossil energy at present. The carbon market has a huge space for stabilizing the carbon value and promoting the sufficient flow of the carbon elements. With the positive progress of domestic CCUS technology research and development and experimental demonstration, the existing CCUS project carbon dioxide emission reduction accounting method is lack of an accurate and clear accounting boundary definition method, an emission amount accounting method and an emission reduction accounting method suitable for the CCUS project, so that the CCUS project emission reduction cannot be accurately accounted, the emission reduction cannot be verified and authenticated, further, the economic benefits of the CCUS project cannot be fully and effectively excavated in the carbon transaction, and in addition, the social benefits of developing the carbon dioxide emission reduction brought by the CCUS project for regional social economy, driving to form a green low-carbon industrial chain, promoting the regional carbon neutralization and the like cannot be fully embodied. Thus, there is an urgent need for a carbon emission reduction accounting standard for the CCUS project that supports sustainable high quality development. Disclosure of Invention In order to solve the problems in the technology, the invention synthesizes a plurality of methodologies, clearly distinguishes the accounting period boundary of the carbon dioxide flooding seal from the datum line scene, and realizes the accounting of the carbon dioxide amount reduced by the emission reduction CCUS-EOR project based on CCER carbon voluntary. More specifically, according to an aspect of the present invention, there is provided a method for accounting for the reduction of emissions of a carbon dioxide flooding sequestration project, comprising: s10, identifying facilities, service ranges and production processes related to the project; s20, determining an accounting boundary and a datum line scene, wherein the accounting boundary comprises an injection period, a stop injection period and a stop operation period; s30, determining a carbon dioxide emission source and a carbon dioxide injection source under project and datum line scenes; s40, respectively calculating carbon dioxide emission and injection amounts of project and reference line scenes, and S50, calculating project carbon dioxide emission reduction, including calculating carbon emission generated by the project activity according to the boundary and carbon dioxide emission sources included in the boundary, and calculating carbon emission reduction according to the carbon emission generated by the project and the carbon emission generated by the datum line scene; wherein, the carbon emission reduction volume is calculated as follows: Wherein E R,y is the emission reduction amount of the y-th year, E B,y is the reference line carbon emission amount of the y-th year, E P,y is the project carbon emission amount of the y-th year, and E L,y is the leakage amount of the y-th year. In accordance with an embodiment of the present invention, in S20, the boundary comprises at least one of a carbon dioxide-containing tail gas emission point, a carbon dioxide capture system, a carbon dioxide delivery system, a carbon dioxide injection system, a carbon dioxide flooding seal-up area, and a carbon dioxide geological emissions monitoring boundary of an energy and industrial facility. According to an embodiment of the present invention, in S30, the carbon dioxide emission source includes at least one of steam and electricity consumption during capture, fossil fuel combustion and electricity consumption during transportation, fossil fuel combustion and electricity consumption during carbon dioxide compression, electricity consumption during injection, dissipation during processing, and organized emission during operation. According to an embodiment of the present invention, the baseline scenario includes three kinds of: If the carbon dioxide injection process for directly serving the project is not originally involved in the accounting boundary, namely the carbon dioxide injection amount is 0 ton, and the carbon dioxide injection amount is newly increased through the newly built production capacity, the project belongs to the newly built project, and the datum line scene is only accounting for various carbon dioxide emission amounts in the