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针对油田开发后期套管损坏井增多、套管变形缩径 ,常规分注工艺采用的Y34 1 114型封隔器不能满足套管损坏井分注的难题 ,研制开发了ZYY34 1 110型小直径封隔器。该封隔器外径小、结构简单、组装试压方便 ,设计有平衡机构、锁紧机构 ,后座距为零 ,密封可靠。经现场试验表明 ,施工成功率 10 0 % ,密封性好 ,有效期长 ,能满足套管变形大于 110mm井的分注卡漏工艺需要 ,缓解了套管损坏井区的注采矛盾
In view of the increase of casing damage in the late stage of oilfield development, the shrinkage of casing shrinkage, the Y34 1 114 packer adopted in the conventional injection process can not meet the problem of casing damage well diversion, the ZYY34 1 110 small diameter seal Separator. The packer has the advantages of small outer diameter, simple structure, convenient assembly and pressure test, balance mechanism and locking mechanism. The backrest distance is zero and the seal is reliable. The field test shows that the construction success rate of 10%, good sealing, long period of validity, to meet the casing deformation of wells greater than 110mm dispensing card leakage process needs to ease the casing failure of injection well contradiction