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针对自封式皮碗封隔器存在下井阻力大、皮碗易损坏和密封效果差等缺点,研制了HNX344—114型皮碗封隔器。封隔器由主体、活塞、锥体、皮碗套件、弹簧、上接头和下接头等组成,结构简单,坐封、解封性能可靠,具有反复坐封性能,可多级使用。59口的井现场应用表明,这种皮碗封隔器最高验封压力35MPa,挤酸压力30MPa,一趟管柱最多分别酸化3层,工艺成功率100%,有效率927%,解决了河南油田厚油层细分酸化改造问题。
Aiming at the shortcomings of self-sealing cup packer, such as well resistance, easily damaged cup and poor sealing effect, a HNX344-114 cup packer was developed. The packer is composed of the main body, the piston, the cone, the cup set, the spring, the upper joint and the lower joint, etc. The packer has the advantages of simple structure, setting and sealing, reliable performance of unsealing, repetitive setting performance and multi-level use. The field application of 59 wells shows that the highest sealing pressure of the packer packer is 35MPa and the squeezing acid pressure is 30MPa. The most of the three columns are acidified three layers at a time, the process success rate is 100% and the effective rate is 927% Oilfield thick oil layer subdivision acidification problems.