CO2捕集、利用与封存(CCUS)技术示范区气体示踪监测技术研究与应用
Research and application of gas tracer monitoring technology in CO2 capture,utilization and storage(CCUS)technology demonstration blocks
张广中1
作者信息
- 1. 中国石化胜利油田分公司石油工程技术研究院,山东 东营 257000
- 折叠
摘要
CO2捕集、利用与封存技术(CCUS)能够大规模减少温室气体排放,国内CO2驱油封存主要应用于低渗透油藏,其混相压力高(超过30 MPa),注采井间压力落差大.通过数值模拟方法可以描述CO2井间分布,但是不能定量、及时描述CO2分布规律,驱替前缘描述难度大,同时CO2气窜现象较为突出,制约油藏高效开发.开展井间CO2气体示踪监测技术研究,通过CO2气体示踪剂评价优选,完善注入工艺,对监测数据分析,达到对注采井间气体的有效监控,明确注采井间CO2分布规律,同时准确预判气窜方向,防范风险和环境污染,为CCUS注采调控和气窜治理提供有力支撑.
Abstract
CO2 capture,utilization,and storage(CCUS)technology can reduce greenhouse gas emissions on a large scale.CO2 flooding and storage in China are mainly used in low-permeability oil reservoirs,with high mixing pressure(over 30 MPa)and significant pressure drop between injection and production wells.The nu-merical simulation method can provide a schematic diagram of the distribution of CO2 between wells,but it cannot quantitatively and timely describe the distribution pattern of CO2,making it difficult to describe the dis-placement front.At the same time,the phenomenon of CO2 gas channeling is more prominent,which restricts the efficient development of oil reservoirs.Therefore,research on CO2 gas tracer monitoring technology be-tween wells was carried out,and through the evaluation and optimization of CO2 gas tracers,the injection pro-cess was improved.Monitoring data analysis was used to assist decision-making,achieving effective monitoring of gas between injection and production wells,clarifying the distribution pattern of CO2 between injection and production wells,accurately predicting the direction of gas channeling,preventing risks and environmental pol-lution,and providing strong support for CCUS injection and production control and gas channeling control.
关键词
CCUS/气驱/评价优选/示踪监测/CO2Key words
CCUS/gas drive/evaluation and optimization/tracer monitoring/CO2引用本文复制引用
出版年
2024
NETL
NSTL
万方数据