CO_(2)驱油对注气区域地表环境因子影响效应评价  

EVALUATION OF THE EFFECTS OF CO_(2) FLOODING ON THE SURFACE ENVIRONMENT FACTORS IN GAS INJECTION AREA

作　　者：张璇[1,2] 周立辉[1,2] 朱妍[1,2] Zhang Xuan;Zhou Lihui;Zhu Yan(PetroChina Changqing Oilfield Company,Xi’an,Shaanxi,710018;National Engineering Laboratory for Exploration and Development of Low Permeability Oil and Gas Fields,Xi’an,Shaanxi,710018)

机构地区：[1]中国石油天然气股份有限公司长庆油田分公司,陕西西安710018 [2]低渗透油气田勘探开发国家工程实验室,陕西西安710018

出　　处：《石油化工安全环保技术》2022年第4期55-60,I0003,I0004,共8页Petrochemical Safety and Environmental Protection Technology

摘　　要：环境风险监测贯穿于长庆油田CO_(2)-EOR项目的前期准备、项目运行和项目结束的各个阶段,对于确定CO_(2)驱地质封存的安全性、对周围环境的影响发挥着决定性作用。为研究长庆油田CO_(2)-EOR项目开发、生产过程中存在的CO_(2)泄漏风险及环境生态效应问题,确保CO_(2)驱油技术不会对环境产生显著负面影响,通过制定方案对试验区大气、土壤气CO_(2)浓度变化,土壤理化及生物学特征、植被、地表水环境等环境因子进行监测,并与试验区环境背景值进行比较,确定监测网覆盖区域内各环境指标的变化趋势。结果表明:长庆油田CO_(2)-EOR项目实施以来,并未对试验区各环境因子产生明显影响,这对验证CO_(2)-EOR的安全稳定运行有着重要意义。Environmental risk monitoring has been carried out through all stages of the preparation,operation and completion of the CO_(2)-EOR project in Changqing Oilfield.And it plays a decisive role in determining the safety and environmental impact assessment of CO_(2) geological sequestration.In order to study the environmental effects of CO_(2)-EOR pre-pilot test project in Changqing Oilfield,the changes of atmospheric and soil CO_(2) concentration,soil characteristics,vegetation,and surface water environment were monitored and compared with the background values of the test area environment.The results indicate that since the implementation of the CO_(2)-EOR project in Changqing Oilfield,no obvious changes appeared in the environmental factors in the test area,which is important to verify the safe and stable operation of CO_(2)-EOR project.

关 键 词：环境风险监测 大气环境 土壤气环境 土壤理化性质 水质 

分 类 号：TE357.7[石油与天然气工程—油气田开发工程]