After sidetracking,reaming to slim-hole can remove formed polluted zone,decrease invasion depth of drilling fluid and reduce reservoir damage.

 
  • 側鉆后對小井眼進(jìn)行擴孔,可以去掉鉆井過(guò)程中形成的污染帶,降低鉆井液侵入油層的深度,減少對油層的損害。
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