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  • Name: Mud Cake Pickling Technology under Multiple Pressure Controlled
  • ID: 11001
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Pickling Technology under Multiple Pressure Controlled
To reconstruct the packer for cleaning and sealing mud cake and increase its number, the annulus between the screen pipe and inner pipe is divided into many small cells to enable acid liquid to flow along the annulus between sidewall and screen pipe, which can effectively remove the mud cakes and other pollutants near the wellbore so as to eliminate mud cake pollution, reduce skin coefficient and improve the reservoir permeability near the wellbore. Therefore, sand screen blockage could be prevented and borehole oil flow channels could be communicated with reduced formation pressure loss.
 

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