In the straight hole,the complex metallic ion polymer drilling fluid system was used.The drilling fluid filtrate was controlled well,and the formation hydrating and swelling were prevented.

 
  • 該井直井段采用復合金屬離子聚合物鉆井液體系,較好地控制了鉆井液濾失量,減少了濾液滲入地層,防止了地層水化膨脹。
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