Cup packer can be used for oil extraction,mechanicalplugging,wellhead testing and other constructions.
Structure and Work Principle
- Cup packer is mainly composed of upper joint,cupand center tube.
- Cup packer is a kind of self-sealing packer.The pipeannulus is sealed by interference cup and casinginwall.On the impact of downhole pressure difference,cup expanses to seal the annulus and it just can bearone-way big pressure differential.Cone cup is themain part of cup packer.It is vulcanized rubber on themetal frame.Cup packer is used in well together withother downhole tools.When the tool down to thedesigned position,it’s sealed by compressionbetween cup and inwall and pressure difference.Pull the column to realize unsealing.
Characteristics
- There is no anchoring mechanism.It can be used in vertical,deflecting and horizontal well.The usegrade is unlimited.
- Cup can be facing fixed(maintain the pressurefrom two directions),or fixed in the same direction(upward or downward).Cup can be fixed in anydirection and easy to dismount.
- Can realize sealing and unsealing without anyother power equipment.It doesn’t need movingcolumn or giving pressure to realize sealing.Putdownward together with the tube string can realizesealing casing annulus.Save more operation time and CoSt.
