关键词: 特低渗透油藏, 超前注水, 合理技术参数, 相似准则

Abstract: In order to deal with the problems, such as reservoir pressure decreasing rapidly, degassing serious, production decline fast and other issues, in the waterflooding process in Xing 71 test area, the indoor experimental research of the advanced water injection in Xing 71 test area was carried out, and the three parallel cores were applied to get the reasonable technical parameters in the indoor experiment and decide the reasonable technical parameters of the advanced water injection in Xing 71 test area. The results of the experiment showed that, for Xing 71 test area, when the pressure level in core porosity was 120% and the advanced water injection rate was 0.014 mL/min, the indoor experiments could achieve a better development result. Based on the experimental results, the dimensionless mathematical model was established and similarity criterion was used to get the advanced water injection reasonable technical parameters in the field. The results were applied to field practice in Xing 71 test area and the production practice had achieved good development results.

Key words: Low permeability reservoir, Advanced water injection, Reasonable technical parameters, Similar criterion