摘要
目的为助力实现“双碳”目标,明确不同相态下CO_(2)管道输送的适应性和经济性。方法以中国石油西南油气田碳酸盐岩气藏CCUS-EGR关键技术研究为背景,优化建立了气相、液相以及超临界相3种相态的CO_(2)管道输送经济性估算模型,分析了流速、输送距离以及输送量对相对总成本的影响。结果①最低输送成本气相管道最高,液相管道次之,超临界相管道最低;②气相经济流速为3.0~4.0 m/s,液相经济流速为1.0~1.8 m/s,超临界相经济流速为2.0~2.4 m/s;③在不同输送距离下,相对总成本随着输送距离的增加而增大;④在不同输送量下,相对总成本随着输送量的增加而增大,DN200以上规格的管道输送成本随输送量变化增长较慢,DN100的管道输送成本随输送量变化很大。结论通过建立CO_(2)管道输送经济性估算模型,分析不同相态下的CO_(2)管道输送经济性,为CO_(2)管道输送工程建设提供充分的依据和参考。
Objective To support achieving the"dual carbon"goals by clarifying the adaptability and economic feasibility of CO_(2)pipeline transportation under different phases.Methods This study is set against research on key CCUS-EGR technologies in the carbonate gas reservoirs of PetroChina Southwest Oil and Gas Field.We optimized and established economic estimation models for CO_(2)pipeline transportation in three phases:gas phase,liquid phase,and supercritical phase.The impacts of flow rate,transportation distance,and transportation volume on the relative total cost were analyzed.Results The findings indicate that:first,the minimum transportation costs follow the order:gas phase pipeline>liquid phase pipeline>supercritical pipeline;second,the economical flow rate ranges are 3.0-4.0 m/s for gas phase,1.0-1.8 m/s for liquid phase,and 2.0-2.4 m/s for supercritical phase;third,the relative total cost increases with transportation distance at different conveying distances;fourth,the relative total cost also increases with transportation volume at different throughput,where the transportation cost for pipe diameters above DN200 rises slowly with volume,whereas the cost for DN100 diameter pipes varies significantly with volume.Conclusion By establishing an economic estimation model for CO_(2)pipeline transportation and analyzing its economic feasibility under different phases,this study provides a solid basis and reference for constructing CO_(2)pipeline transportation projects.
作者
杨继忠
戴万能
李茜
刘恩斌
计维安
钟华
YANG Jizhong;DAI Wanneng;LI Xi;LIU Enbin;JI Weian;ZHONG Hua(Institute of Gathering and Transportation Engineering Technology,PetroChina Southwest Oil&Gasfield Company,Chengdu,Sichuan,China;Petroleum Engineering School,Southwest Petroleum University,Chengdu,Sichuan,China)
出处
《石油与天然气化工》
CAS
CSCD
北大核心
2024年第5期93-102,共10页
Chemical engineering of oil & gas
基金
中国石油天然气股份有限公司油气与新能源分公司科技项目“天然气提高采收率重大开发试验”子课题“卧龙河气田碳酸盐岩气藏CCUS-EGR提高采收率先导试验”(2023YQX10503ZK)
中国石油天然气股份有限公司西南油气田分公司科研项目“碳酸盐岩气藏CCUS-EGR关键技术研究”(20230312-01)。
