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为了解决可取式卡瓦封隔器存在的锚定和解卡不可靠问题,通过改进、优化封隔器锚定机构和解卡机构,研制了JDY441可取式卡瓦封隔器。该封隔器由防撞部分、坐封部分、锁紧部分、密封部分、锚定部分及解封部分组成,采用多级液压缸坐封、双向卡瓦锚定,封隔器密封、锚定安全可靠。室内试验和现场应用结果表明,封隔器的工作压力达到35 MPa,工作温度为135℃,解封力为96 kN。
In order to solve the problem of the unreliable anchoring and disassembling of the preemptive slip packer, the JDY441 removable slip packer was developed by improving and optimizing the packer anchoring mechanism and the jamming mechanism. The packer is composed of a collision preventing part, a setting part, a locking part, a sealing part, an anchoring part and an unsealing part, wherein the packer is formed by multi-stage hydraulic cylinder setting, bi-directional slips anchoring, packer sealing and anchoring Safe and reliable. The results of laboratory tests and field tests show that the working pressure of the packer reaches 35 MPa, the working temperature is 135 ° C, and the unwinding force is 96 kN.