检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
机构地区:[1]广东石油化工学院石油工程学院,茂名525000 [2]中国寰球工程公司,北京100000 [3]中石油煤层气有限责任公司陕西技术服务分公司,西安710000 [4]中国石油大学(华东)石油工程学院,青岛266580
出 处:《科学技术与工程》2015年第17期51-55,共5页Science Technology and Engineering
摘 要:注空气是提高采收率的有效技术;但对于中高渗、非均质油藏,单纯注空气容易引发气窜,加剧老井腐蚀,带来安全隐患.因此,针对此类油藏进行空气驱,需要加入泡沫进行封堵和流度控制.通过室内实验,进行了空气泡沫封堵能力影响因素的敏感性分析,研究了空气泡沫段塞在不同驱替方式和不同驱替速率下的流度控制作用.研究结果表明,温度对空气泡沫稳定性有不利影响;在实验压力范围内,高压可以提高空气泡沫的稳定性;当气液比在1∶1 ~2∶1之间时,空气泡沫的封堵能力达到最大值;泡沫段塞后气驱,体系阻力因子先增大后减小;泡沫段塞后水驱,在一段时间内体系的阻力因子持续增大;无论是泡沫段塞后气驱还是泡沫段塞后水驱,较高的注入速率会带来较强的封堵能力.Air injection is an effective technology to enhance oil recovery. But for mid high permeability, heterogeneous reservoirs, pure air injection is apt to cause gas channeling, bringing corrosion and security risk. Air foam plugging and mobility control is becoming very necessary. Laboratory experiments have been conducted to study the influence factors of air foam plugging ability and the effects of air foam slugging mobility control under different displacement mode and displacement rates. The results indicate that temperature adversely affect the stability of air foams ; at a certain pressure range, air foam stability enhanced as the pressure rise ; when the gas-liquid ratio is between 1:1 to 2: 1, the air foam system has the strongest plugging efficiency. After air foam flooding, the resistance factor of follow-up water flooding increases with rising injection rate ; due to rapid gas breakthrough, the resistance coefficient of follow-up air flooding will be increased and then decreased. Whether it is the follow-up gas flooding or water flooding, a high injection rate will bring a strong plugging ability.
分 类 号:TE357.45[石油与天然气工程—油气田开发工程]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:18.191.238.220