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2. 发明申请

US20020162657A1 Method and apparatus for plugging a wellbore 有权
标题翻译：堵塞井筒的方法和装置
公开(公告)号：US20020162657A1
公开(公告)日：2002-11-07
申请号：US09849043
申请日：2001-05-04
申请人： WEATHERFORD/LAMB
发明人： David Moore Tumlin , Gene K. Fugatt SR. , David Hosie , MIke Luke
IPC分类号： E21B033/13 , E21B023/01
CPC分类号： E21B43/112 , E21B33/134 , E21B43/1185 , E21B43/11852 , E21B43/11855
摘要： The present invention provides a method and apparatus for plugging a wellbore in a trip saving manner. In one aspect, the invention includes a cement retainer disposed on a run-in string and a radially expanded perforating assembly disposed below the cement retainer. In a single run, the apparatus provides for perforating a wellbore and squeezing cement through the perforations and into the formation therearound. In another aspect, a method of plugging the wellbore includes running a cement retainer and a radially expanded perforating assembly into a wellbore on a run-in string. After the cement retainer is set, a firing head is actuated to cause the perforating gun to discharge. After perforations are formed, cement is introduced from the cement retainer into the isolated area and squeezed through the perforations. Thereafter, the run-in string disengages from the cement retainer leaving behind the plug formed. In yet another aspect, a firing head capable of being actuated by different means is used to discharge the perforating assembly.
摘要翻译：本发明提供一种以跳闸保存方式堵塞井筒的方法和装置。在一个方面，本发明包括设置在输入线上的水泥保持器和设置在水泥保持器下方的径向扩张的穿孔组件。在单次运行中，该装置用于穿孔井眼，并通过穿孔挤压水泥并进入周围的地层。在另一方面，一种堵塞井筒的方法包括将水泥保持器和径向膨胀的穿孔组件运行到入射柱中的井筒中。在水泥固定器固定之后，致动一个击发头使射孔枪放电。在形成穿孔之后，将水泥从水泥保持器引入隔离区域并挤压通过穿孔。此后，导入柱离开水泥固定器，留下形成的塞子。在另一方面，能够通过不同的装置致动的击发头被用于排出穿孔组件。

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