摘要
水平井多元热流体吞吐高效开采技术是一项综合利用水平井、二氧化碳、氮气和蒸汽进行稠油开发的提高采收率新技术。根据稠油油藏的特点,对其进行了水平井多元热流体吞吐实验及数值模拟研究,揭示了其提高采收率机理。与常规蒸汽吞吐相比,水平井多元热流体吞吐高效开采技术具有3大优势:水平井可以提高注入能力与生产能力,且吞吐有效期长;二氧化碳能有效降低稠油粘度和残余油饱和度,提高驱油效率;氮气可以扩大注入蒸汽波及范围,降低注入蒸汽热损失。现场应用证实,该技术可有效提高蒸汽的利用效率,降低注入压力,提高油井产能,延长吞吐有效期,能够大幅度提高海上稠油产量。
Horizontal well multi-component thermal fluid stimulation high efficiency recovery technology is an EOR technology forheavy oil reservoir,which utilizes horizontal well,CO2,N2 and steam.The EOR mechanism is studied through horizontal well multi-component thermal fluid stimulation experiment and numerical simulation based on the heavy oil reservoir characterization.Comparedwith the conventional steam stimulation,the horizontal well multicomponent thermal fluid stimulation high efficiency recovery technology has three advantages: horizontal well can improve the injectivity and productivity and has a longer-term validity,the CO2 can significantly decrease heavy oil viscosity and residual oil saturation,in addition,the CO2 can also improve the displacement efficiency; the N2 can enlarge the sweeping volume and decrease the heat loss.The field application confirmed that this technology can significantly improve the steam utilization,decrease the injection pressure,improve oil well productivity,extend period of validity,and greatly improve the heavy oil reservoir of offshore reservoir.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2014年第2期41-44,114,共4页
Petroleum Geology and Recovery Efficiency
基金
国家科技重大专项"大型油气田及煤层气开发"(2011ZX05024)
关键词
稠油油藏
水平井
多元热流体吞吐
二氧化碳
氮气
heavy oil reservoir
horizontal well
multi-component thermal fluid stimulation
carbon dioxide
nitrogen
作者简介
杨兵,男,工程师,从事油藏数值模拟和稠油热采研究.联系电话：（010）84522814,E-mail：89421969@qq.com.
