A kind of fracture cleaning acid is designed for ES-10 well in the Songzi Oilfield to remove both the fracture damage caused by residue of fracturing pad and formation damage due to drilling mud.
根据该井情况建立实验室评价水力压裂裂缝伤害的方法,设计出模拟裂缝伤害过程的环流实验流程和实验方法,开展了室内岩心污染及解堵实验研究,研制出能有效分解瓜胶残渣、解除水力裂缝堵塞的配套酸液体系(以裂缝清洗剂为前置液,较高浓度盐酸为主体酸液),并优化设计出集裂缝清洗与基质酸化解堵于一体的施工工艺,清洗裂缝和改善近缝地层渗透性同步进行。
The article introduces the prevention and control-technology of the quality com-mon fault of the initial stress lift-slab s storey-floorboard, analyses the cause of formation of the fissure along the blank of the lift-slab, and expatiates the measure of the prevention and control-technology.
针对建筑工程中常见的预应力空心楼板顺板缝裂缝的质量通病,分析其成因,阐述其防治措施。