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2. 发明授权

US06419026B1 Method and apparatus for completing a wellbore 有权
标题翻译：完井井的方法和装置
公开(公告)号：US06419026B1
公开(公告)日：2002-07-16
申请号：US09668328
申请日：2000-09-22
申请人： Alan MacKenzie , Sebastian J. Wolters , Douglas J. Murray
发明人： Alan MacKenzie , Sebastian J. Wolters , Douglas J. Murray
IPC分类号： E21B4310
CPC分类号： E21B41/0042 , E21B43/086 , E21B43/103
摘要： A method and apparatus to provide a large bore hook hanger system incorporating sand exclusion at a junction in a multilateral wellbore includes the running of a lateral liner having an expandable sleeve positioned thereon to bridge a milled window from the lateral borehole to the primary borehole, expandable sleeve including a pre-machined window and a hook to hang the liner from the primary borehole. The hook further acts to center the pre-machined window in the expandable sleeve to provide access to the primary wellbore. The expandable sleeve is preferably covered on its outer surface with an elastomeric material and is outwardly concentric to an expandable packer for run-in. Once the expandable sleeve is positioned at the appropriate location in the junction, the expandable packer is inflated thus permanently deforming the expandable sleeve into contact with the open hole of the lateral borehole thereby preventing sand or gravel ingress to the primary borehole.
摘要翻译：一种提供在多孔井筒中的接合处结合排砂的大型镗钩悬挂器系统的方法和装置包括具有位于其上的可膨胀套管的侧向衬套的行进，以将铣削的窗口从侧向钻孔桥接到主钻孔，套筒包括一个预加工的窗户和一个挂钩，用于从主钻孔悬挂衬垫。钩进一步用于将预加工的窗口对准在可膨胀套筒中以提供进入主井眼的通路。可膨胀套管优选地在其外表面上用弹性体材料覆盖，并且与可扩展封隔器向外同心地用于导入。一旦可膨胀套筒定位在接头中的适当位置，膨胀式封隔器就会膨胀，从而使可膨胀套筒永久变形，从而与侧向钻孔的开孔接触，从而防止砂或砂砾进入主钻孔。

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