摘要
室内优选了冻胶泡沫和催化降黏体系配方。微观驱替实验表明,冻胶泡沫体系能够选择性封堵大孔道,增大蒸汽在地层中的波及系数;冻胶泡沫调剖与水热催化降黏物理模拟实验,冻胶泡沫调剖后,注入含催化降黏剂0.5%的蒸汽,采出油的饱和烃、芳香烃含量增加,胶质、沥青质含量减少,降黏率达96.79%,提高采收率21.93%。该技术在辽河油田洼38-35-4038井进行了矿场应用,注汽压力升高1.9MPa,含水率下降22.41%,累计增油300余吨,效果明显。
The formula of the gelled foam and catalytic visbreaking system was determined through lab experiments. Microcosmic flooding experiments showed that: the gelled foam system had priority to sealing layers of high permeability and high water saturation, which helped to improve the sweep efficiency. Through core physical simulating experiments, the amount of saturated hydrocarbon and aromatic hydrocarbon were found increases, while colloid and asphaltenes decreases when steam containing 0.5% catalytic viscosity reducer was injected after gelled foam profile control, the viscosity reducing and EOR rate could achieve 96.79% and 21.93%. Finally, gelled foam profile control catalytic visbreaking technology was applied in well W354038 of Liaohe Oilfield, the effects were good with increased oil output up to 300 tons, and decreased water content ratio 22.41%.
出处
《钻采工艺》
CAS
北大核心
2011年第6期83-85,10-11,共3页
Drilling & Production Technology
基金
中国石油大学(华东)研究生创新基金资助项目
项目名称:"双官能团交联聚合物冻胶稳定泡沫关键技术研究"
项目编号:S09-03
关键词
稠油
冻胶泡沫
调剖
催化降黏
thick oil, gelled foam, profile control, catalytic visbreaking
