A methodology for CCUS carbon reduction potential and carbon neutrality contribution:multi-scale optimization and empirical exploration
WEI Ning
LIN Keyao
LIU Shengnan
LI Pengyang
YAN Yetao
MA Xin
DIAO Yujie
LI Xiaochun
Abstract：CO2 capture,utilization,and geological storage(CCUS)serve as a foundational technology for large-scale emission reduction in the fossil energy and industry sectors.To quantify the carbon abatement potential and contribution to carbon neutrality for high-emission enterprises in Hainan driven by CCUS,we constructed a high-precision research framework that integrates enterprise-level carbon emission accounting,block-level storage site screening,techno-economic characterization of CCUS projects,source-sink matching via pipeline cost surface modeling,and carbon abatement prediction.This framework enables kilometer-scale CCUS integrated analysis,achieving the first multi-dimensional assessment of Hainan's CCUS technologies.It covers storage capacity,site suitability,techno-economics,cluster deployment,and carbon neutrality pathways.Findings show that the Fushan Sag in Hainan possesses geological conditions for CO2 geological utilization and storage in oil-gas reservoirs and saline aquifers.Key emitters can achieve 90%abatement of total captured CO2 at a levelized cost of<400 CNY/ton via CO2 saline aquifer storage.CCUS technologies are projected to yield a cumulative net abatement of 540 million tons for Hainan's enterprises by 2060,with CO2-EOR and CO2-EWR applications peaking in 2040 and 2045,respectively.This study provides critical support for Hainan's CCUS planning toward carbon neutrality and offers a reference for South-South and island nations to integrate CCUS into their decarbonization and industrial development strategies.
Keywords：carbon capture geological utilization and storage(CCUS)carbon geological storage capacitytechno-economic evaluationsource-sink matchingCCUS hubcarbon neutralityHainan
Publication Date：2025-09-30
Online Publishing Date：2025-10-22(First online date of this platform, not the publication date of the document)
Pages：12( 1-12 )