Application of Casing Deformation Borehole Diameter Restoration Technology in Directional and Horizontal Wells in the Weiye Area
The challenges in restoring borehole diameter after casing deformation in Directional and horizontal wells include large borehole curvature changes,small boreholediameter,high possibility of creating new boreholes,difficulties in selecting restoration tools,complex treatment string structures,and difficulty in controlling treatment parameters.This paper analyzes the borehole diameter restoration technology for casing deformation in directional and horizontal wells based on the types of casing deformation.From the aspects of diagnosing casing deformation forms,selecting restoration tools,optimizing restoration strings tructures,and formulating restoration plans,we summarize the corresponding restoration techniques.This technology has been successfully applied to restore the borehole diameter of wells WY26-5HF and WY26-4HF,accumulating valuable experience for future borehole diameter restorations in directional and horizontal wells with casing deformation.
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