Bidirectional anchor packer

@inproceedings{2011BidirectionalAP,
  title={Bidirectional anchor packer},
  author={刘云刚 and 刘增 and 史庆军 and 张林 and 张脉全 and 重成兴},
  year={2011}
}
The invention relates to a bidirectional anchor packer. The anchor packer solves the problems that the packer device cannot release seal or automatic release seal and easily causes channeling, the rubber cylinder is damaged and the slips are damaged and the like when a dynamic negative pressure perforating technology is adopted in the conventional oil well. The anchor packer comprises an upper joint, a seat seal mandrel, a pushing sleeve, an upper slip, a rubber cylinder, a bypass passage, a… CONTINUE READING