Top cement + Bottom segmented transformation technology

Description of Technology : 

●  One trip run into of tubing string can meet the needs of top tubing cementing and open hole segmented fracturing.

●  Configure drillable ball seat frac sliding sleeve can achieve internal cleaning and ball seat grinding be completed simultaneously after construction is done.

●  The upper part of cementing sliding sleeve is provided with a sealing mechanism to ensure the wellbore's integrity of the fracturing string during fracturing.

The structure of tubing string: 

●  Tubing string +Tie back sealing tubing string + Cement hydraulic control sleeves + SOH Packer +SF frac sleeve + Hydraulic control sleeve + Inflation sub + Float collar + Float shoe

●  Seal bore extension+ Tie back sealing insert.