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对于碳酸盐岩储层,进行水平井分段酸化改造时,工艺参数的选择应根据岩性、岩性矿物成分及储层伤害情况综合考虑。在前期调研国内外水平井分段酸化工艺及应用现状的基础上,针对D区块储层物性、裂缝发育状况,从分段数、改造理念、施工参数、措施液类型等方面对水平井分段酸化方案进行了优化设计,以实现酸液体系的“快进快出”。
For carbonate reservoirs, when the horizontal well is subdivided and acidified, the process parameters should be selected based on lithology, lithologic mineral composition and reservoir damage. Based on the previous research on the segmented acidification technology and its application status of horizontal wells at home and abroad, aiming at the reservoir physical properties and the development of fractures in Block D, the horizontal well is divided into three sections according to the number of sections, the concept of reconstruction, the construction parameters, Section acidification program was optimized to achieve acid system “fast forward fast ”.