苏14井区多薄层分层压裂改造技术研究

Multi-layered thin-fracturing technology research of Su 14 well field

针对苏14井区储层低压、低渗、非均质性强的地质特点,开发先导性试验中大规模压裂沟通砂体效果不明显,增产效果不显著,以及80%以上的井钻遇盒8上、盒8下和山1等多层的实际,采用分层压裂沟通多个储层、合层开采提高储层储量纵向的动用程度,达到了提高单井产量,实现经济有效开发的目的。

Su 14 well field has geological features of low pressure,low permeability and strong heterogeneity.Pilot development test showed that it didn't achieve the desired effect of sand connectivity by large-scale fracturing,and the production was not significantly increased.More than 80%wells encountered layers of He_(8top),He_(8bottom),and Shan_1.In this condition,separated layer fracturing was applied to link up multiple zones,and multi-layer commingled production was used to improve the recovery extent of the vertical producing reserves.As a result,single well production was increased,and the purpose of costeffective development was achieved.