Analysis Of Completion Packer During Fracturing

Nowadays,the down hole tools facing more and more complex working conditions during the ultra-deep well and extended reach horizontal well completion,especially in ultra-deep well fracturing,the axial force of packers would be large,which can cause the seal failure of packer.In this paper,taking the characteristics of the ultra-deep well and extended reach horizontal well completion into consideration,the tubing and packer force are analyzed.According to the characteristics of deep well completion technology string,the accurate place of packer under the well hole and the force of packer are discussed during fracturing,the fracturing fluid density and displacement on the influence law of axial force of packer are discussed as well.This paper also calculate the force of the bottom packer in extended reach horizontal well fracturing based on the case,aimed at the coming seal failure of the bottom of the packer,it's important to analyze the packer 's force when adding another packer at the bottom of fracturing string.The results indicate that the force on the bottom packer is very large,which would cause the slip of packer.Compared with the previous results,the force on the bottom packer decreased greatly.