Accounting and evaluation of carbon emission reduction of CCUS-EOR project from perspective of full life cycle: Case study of Yanchang Petroleum’s 5 × 10<sup>4</sup> t/a demonstration project

WANG Keyu; LIANG Quansheng; LI Qi; LIU Ying; CAI Bofeng; SHEN Zhenzhen; WANG Hong; PANG Lingyun; WANG Heyi

doi:10.12434/j.issn.2097-2547.20260055

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Accounting and evaluation of carbon emission reduction of CCUS-EOR project from perspective of full life cycle: Case study of Yanchang Petroleum’s 5 × 10⁴ t/a demonstration project

更新时间：2026-04-30

- Accounting and evaluation of carbon emission reduction of CCUS-EOR project from perspective of full life cycle: Case study of Yanchang Petroleum’s 5 × 10⁴ t/a demonstration project
- Pages: 1-8(2026)
- 作者机构：
  
  1.陕西延长石油（集团）有限责任公司研究院，陕西西安 710075
  2.中国科学院武汉岩土力学研究所，湖北武汉 430071
  3.生态环境部环境规划院碳达峰碳中和研究中心，北京 100043
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20260055
  CLC： TQ028.1
- Received：02 February 2026，
  
  Revised：2026-03-10，
  
  Online First：29 April 2026，
- 稿件说明：
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王苛宇,梁全胜,李琦等.全生命周期视角下CCUS-EOR项目碳减排核算与评价：以延长石油5 × 10⁴ t/a示范项目为例[J].低碳化学与化工,

WANG Keyu,LIANG Quansheng,LI Qi,et al.Accounting and evaluation of carbon emission reduction of CCUS-EOR project from perspective of full life cycle: Case study of Yanchang Petroleum’s 5 × 10⁴ t/a demonstration project[J].Low-Carbon Chemistry and Chemical Engineering,
王苛宇,梁全胜,李琦等.全生命周期视角下CCUS-EOR项目碳减排核算与评价：以延长石油5 × 10⁴ t/a示范项目为例[J].低碳化学与化工, DOI：10.12434/j.issn.2097-2547.20260055.

WANG Keyu,LIANG Quansheng,LI Qi,et al.Accounting and evaluation of carbon emission reduction of CCUS-EOR project from perspective of full life cycle: Case study of Yanchang Petroleum’s 5 × 10⁴ t/a demonstration project[J].Low-Carbon Chemistry and Chemical Engineering, DOI：10.12434/j.issn.2097-2547.20260055.

摘要

在“双碳”目标下，碳捕集、利用与封存（CCUS）是实现能源行业深度减排的关键技术，其中二氧化碳驱油（CCUS-EOR）因其兼具碳减排和增产效益而成为研究重点。然而，针对CCUS-EOR全流程项目，目前尚缺乏统一、可操作的全生命周期碳核算方法学，导致碳减排效益评估的科学性不足。以延长石油5 × 10

t/a CCUS-EOR示范项目为研究对象，构建了一套覆盖“筹建-建设-运营-闭场”全过程的碳减排核算与评价方法。该方法基于排放因子法，系统界定了捕集、运输、驱油封存、伴生气回收和安全监测的核算边界与基准线情景。采用2023年陕西省电力二氧化碳排放因子（0.6335 kg/(kW·h)）等数据，对该示范项目在全生命周期各阶段的碳排放情况进行了核算。结果表明，示范项目年基准线排放量为50065.9 t，全生命周期年均排放量为8520.5 t，年净减排量为41545.4 t，全生命周期平均减排效率为83.0%。该方法不仅验证了CCUS-EOR项目显著的碳减排效益，还为构建可核查、可推广的CCUS项目碳核算方法学提供了参考。

Abstract

Under the “carbon peaking and carbon neutrality” goals

carbon capture

utilization and storage (CCUS) is a key technology for achieving deep emission reductions in energy industry. Among them

carbon dioxide-enhanced oil recovery (CCUS-EOR) has become a research focus due to its dual benefits of carbon emission reduction and production enh

ancement. However

for the entire CCUS-EOR process

there is a lack of a unified and operable life-cycle carbon accounting methodology currently

which leads to insufficient scientific rigor in the assessment of carbon emission reduction benefits. Taking Yanchang Petroleum’s 5 × 10

t/a CCUS-EOR demonstration project as the research object

a carbon emission reduction accounting and evaluation method was constructed to cover the whole process of “preparation-construction-operation-closure”. Based on the emission factor method

the approach systematically defines the accounting boundaries and baseline scenarios for capture

transportation

oil displacement and storage

associated gas recovery

and safety monitoring. Using data such as the 2023 carbon dioxide emission factor for electricity in Shaanxi Province (0.6335 kg/(kW·h))

the carbon emissions of the demonstration project at each stage of its life cycle were calculated. The results show that the annual baseline emissions of the demonstration project are 50065.9 t

the average annual life-cycle emissions are 8520.5 t

the annual net emission reductions are 41545.4 t

and the average life-cycle emission reduction efficiency is 83.0%. The method not only verifies the significant carbon emission reduction benefits of the CCUS-EOR project

but also provides a reference for constructing a verifiable and scalable carbon accounting methodology for CCUS projects.

关键词

Keywords

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Accounting and evaluation of carbon emission reduction of CCUS-EOR project from perspective of full life cycle: Case study of Yanchang Petroleum’s 5 × 104 t/a demonstration project

DOI：10.12434/j.issn.2097-2547.20260055

摘要

Abstract

关键词

Keywords

references

Accounting and evaluation of carbon emission reduction of CCUS-EOR project from perspective of full life cycle: Case study of Yanchang Petroleum’s 5 × 10⁴ t/a demonstration project