吉林扶余油田稠油油藏化学驱实验研究

Experimental study on chemical flooding for heavy oil reservoir in Fuyu, Jilin

张建忠 2 侯吉瑞 2 刘必心 2 姜康 2 袁颖婕1 2 徐宏明 2 张磊 2

中国石油大学（北京）提高采收率研究院，北京 102249 中国石油三次采油重点实验室，北京 102249

EOR Institute, China University of Petroleum (Beijing), Beijing 102249 Key Laboratory for EOR of CNPC, Beijing 102249, China

针对吉林扶余油田稠油，选取一种水溶性降黏剂，采用乳化降黏法，改善原油流变性并使其黏度降低，提高了稠油油藏的采收率。采用静态评价与动态评价相结合的方式；对该降黏剂的性能进行评价，利用流变仪测试不同降黏剂浓度、不同油水比条件下的降黏率，以此来考察降黏剂对稠油的静态降黏效果。采用人造岩心物理模拟实验，考察不同降黏剂浓度、注入速度、注入时机对降黏剂动态降黏效果的影响，为矿场实际应用提供理论依据。实验表明，该降黏剂能够有效降低吉林稠油黏度，具有较好的降黏效果。

A new water-soluble viscosity reducer has been chosen for heavy oil reservoir in Fuyu, Jilin. Rheological behavior of heavy oil can be improved and viscosity can be decreased through the use of emulsion viscosity reduction method, which is favour of the improvement of heavy oil reservoir recovery ratio. We evaluate the performance of the viscosity reducer by combining static evaluation with dynamic evaluation. The viscosity reduction rate is tested under the conditions of different viscosity reducers and different oil-water ratios in order to examine the effect of viscosity reducer on static viscosity reduction. Through the physical simulation experiment of artificial core, we investigate the effect of different viscosity reducer concentrations, injection speeds and injection times on the static viscosity reduction of viscosity reducer, which provides the theoretical basis for real application in field. The experiment shows that the viscosity reducer can effectively reduced the heavy oil viscosity in Jilin and it has a good viscosity reduction effect.

10.6056/dkyqt2012z1020