摘要
为进一步寻找表外储层挖潜点并有效提高采收率，利用实验方法研究了驱油用聚合物的注入质量浓度和相对分子质量对孔喉半径比的适应性。结果表明：随着聚合物质量浓度和相对分子质量的增加，聚合物的注入压力上升，其阻力系数和残余阻力系数也逐渐增高，并有可能发生堵塞。为了使注入的聚合物和表外储层的孔喉半径比（大多数分布在40～60）相匹配，需采用质量浓度低于2200mg／L的聚合物溶液，聚合物相对分子质量不超过1900×10^4。该研究为表外储层聚合物驱方案设计提供了指导。
In order to further search for the potential-tapping points and effective EOR stimulation, with the help of the experimental methods, the adaptabilities between the mass concentrations and relative molecular weights of the polymer injected and pore-throat radius ratio are studied. The results show that with the increase of the concentration and molecular weight, the injection pressure of the polymer is rising, the resistance factor and residual resistance factor is increasing too. Besides it is possible to jam. In order to make the injected polymer match the pore throat radius ratio ofuntabulated reservoirs （ distribution is mostly between 40 and 60 ）, the mass concentration lower than 2 200 mg/L of polymer solution is needed and the suitable relative molecular weight is not more than 1 900 x 10^4. The achievements obtained above have provided guidance for the scheme design of polymer flooding in untabulated reservoirs.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2012年第4期135-138,共4页
Petroleum Geology & Oilfield Development in Daqing
基金
中国石油股份公司课题“二类油层聚合物驱进一步提高采收率技术研究”（2008E-1207）
关键词
表外储层
聚合物驱
孔喉半径比
质量浓度
相对分子质量
untabulated reservoir
polymer flooding
pore throat radius ratio
mass concentration
relative molec-ular weight
