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| 低渗油藏注CO2驱油地表泄漏监测研究 |
| Research on Surface Leakage Monitoring of CO2 Flooding in Low permeability Oil Reservoir |
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| DOI： |
| 中文关键词: 二氧化碳 低渗油藏 数值模拟 地表泄漏监测 |
| 英文关键词: CO2 Low permeability oil reservoir Numerical modeling Surface leakage monitoring |
| 基金项目:国家自然科学基金资助项目（52366010）；新疆吾维尔自治区重点研发专项基金资助项目（2022B01033-2）；“天山英才”计划-青年托举人才基金资助项目（2023TSYCQNTJ0035）；新疆吾维尔自治区高校基本科研基金资助项目（XJEDU2023P026）；新疆吾维尔自治区中央引导地方科技发展专项基金资助项目（ZYYD2022C16）；“天山英才”计划科技创新领军人才基金资助项目（2022TSYCLJ0001） |
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| 中文摘要: |
| 二氧化碳捕集、利用与封存（CCUS）技术是实现碳中和和应对气候变化的重要途径。基于新疆准东区域油田低渗油藏地层特性和现场情况，以区域CO2注入过程为研究对象，结合数值模拟与现场地表泄漏监测技术，系统探讨盖层特性、注入模式和注采井布局等关键因素对CO2在地层中运移与扩散的影响。研究显示，当CO2注入流量为15 kg/s时，扩散速率较慢，5年时间CO2最远扩散距离约1 km。模拟显示，在间隔6个月的监测中，发现注入井周边CO2摩尔分数略高，为656×10-6～725×10-6，后期须长期监测，确保封存的安全性。 |
| 英文摘要: |
| Carbon capture，utilization and storage（CCUS） technology is an important way to achieve carbon neutrality and address climate change. Based on the formation characteristics and field conditions of low permeability oil reservoirs in Zhundong oilfield in Xinjiang， focusing on the regional CO2 injection process， numerical simulation and on site surface leakage monitoring technology were used to systematically explore the influence of key factors such as caprock properties， injection mode and injection production well layout on the migration and diffusion of CO2 in the formation. 〖JP2〗The results showed that when CO2 injection rate was 15 kg/s， the diffusion rate was relatively slow， and the maximum diffusion distance of CO2 over 5 years was approximately 1 km. Simulations tests showed that during the 〖GK!87mm〗〖JP3〗six month monitoring interval， CO2 concentration around the injection well slightly increased， ranging from 656×10-6 to 〖JP〗725×10-6. Therefore， long term monitoring must be implemented later to ensure the safety of storage. |
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