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

摘要： 针对杏71试验区同步注水开发过程中存在的地层压力下降较快、原油脱气严重、产量递减较快等问题,对杏71试验区进行超前注水室内优化进行实验研究,并应用三管并联长条岩心对该区块超前注水合理技术参数进行优选。实验结果表明,当岩心内孔隙压力水平达到120%,注入速度为0.014mL/min,即可取得较好的开发效果。以实验结果为基础,建立无量纲渗流数学模型,应用相似准则得到现场超前注水合理技术参数,并取得了较好的开发效果。

关键词: 特低渗透油藏, 超前注水, 合理技术参数, 相似准则