一图读懂 | 温室气体自愿减排项目方法学 海上油田伴生气回收利用

Core Viewpoint - The article discusses the implementation of a new methodology for voluntary greenhouse gas emission reduction projects related to the recovery and utilization of associated gas from offshore oil fields, aimed at promoting industry-wide participation in emission reduction efforts [4]. Background - The methodology was jointly issued by the Ministry of Ecology and Environment and the National Energy Administration on November 21, 2025, and is effective from the date of issuance [4]. - Associated gas, primarily composed of methane, ethane, propane, butane, pentane, and heavier hydrocarbons, is produced alongside oil extraction. The recovery and utilization of this gas can reduce carbon dioxide emissions, improve energy efficiency, and enhance the supply of clean energy, contributing positively to the green and low-carbon transformation of China's offshore oil industry [6]. Main Content 1. Applicable Conditions - The methodology applies to projects recovering associated gas from offshore oil fields for the production of natural gas, liquefied natural gas, compressed natural gas, and liquefied petroleum gas [12]. - Projects must have no existing pipeline connections between production facilities and land prior to approval [12]. - Monitoring data must be connected to the national carbon market management platform [12]. 2. Project Accounting Period - The accounting period for projects is defined as the time frame for which emission reductions are recorded, with a maximum duration of 10 years [16]. 3. Additionality Evidence - Projects face high construction and operational costs due to the offshore distance and dispersed sources of associated gas, which presents investment risks. Projects meeting the applicable conditions are exempt from additionality proof [20]. 4. Emission Reduction Calculation Method - Emission reductions are calculated based on the replacement of newly extracted natural gas with recovered associated gas, avoiding emissions from burning newly extracted gas [23]. 5. Data Management Requirements - Project owners must establish data management systems to ensure data quality and monitoring, with designated personnel responsible for data collection and verification [28]. - Measurement devices must be calibrated annually and maintained within their validity period [29]. - All data and information from the project design and implementation phases must be retained for at least 10 years after the final emission reduction registration [31]. 6. Approval and Verification Points - Verification institutions should refer to the methodology for applicable conditions, project boundaries, monitoring plans, and parameters during project approval and emission reduction verification [39]. 7. Public Supervision Channels - Monitoring data will be publicly accessible through the official websites of provincial and municipal ecological environment departments, allowing for public and media oversight [40].